chore: adding Helm app version back (#412)

* chore: adding Helm app version back

* chore: removing redundant values entry

* chore: bumping to newer version

* chore: bumping app version to latest

Co-authored-by: Yusuke Kuoka <ykuoka@gmail.com>

.github/workflows/build-and-release-runners.yml

@@ -13,21 +13,27 @@ on:
     paths:
       - runner/patched/*
       - runner/Dockerfile
-      - runner/dindrunner.Dockerfile
+      - runner/Dockerfile.ubuntu.1804
+      - runner/Dockerfile.dindrunner
       - runner/entrypoint.sh
       - .github/workflows/build-and-release-runners.yml
 
 jobs:
   build:
     runs-on: ubuntu-latest
-    name: Build ${{ matrix.name }}
+    name: Build ${{ matrix.name }}-ubuntu-${{ matrix.os-version }}
     strategy:
       matrix:
         include:
           - name: actions-runner
+            os-version: 20.04
             dockerfile: Dockerfile
+          - name: actions-runner
+            os-version: 18.04
+            dockerfile: Dockerfile.ubuntu.1804
           - name: actions-runner-dind
-            dockerfile: dindrunner.Dockerfile
+            os-version: 20.04
+            dockerfile: Dockerfile.dindrunner
     env:
       RUNNER_VERSION: 2.277.1
       DOCKER_VERSION: 19.03.12
@@ -55,7 +61,55 @@ jobs:
           username: ${{ github.repository_owner }}
           password: ${{ secrets.DOCKER_ACCESS_TOKEN }}
 
-      - name: Build and Push
+      - name: Build and Push Versioned Tags
+        uses: docker/build-push-action@v2
+        with:
+          context: ./runner
+          file: ./runner/${{ matrix.dockerfile }}
+          platforms: linux/amd64,linux/arm64
+          push: ${{ github.event_name != 'pull_request' }}
+          build-args: |
+            RUNNER_VERSION=${{ env.RUNNER_VERSION }}
+            DOCKER_VERSION=${{ env.DOCKER_VERSION }}
+          tags: |
+            ${{ env.DOCKERHUB_USERNAME }}/${{ matrix.name }}:v${{ env.RUNNER_VERSION }}-ubuntu-${{ matrix.os-version }}
+            ${{ env.DOCKERHUB_USERNAME }}/${{ matrix.name }}:v${{ env.RUNNER_VERSION }}-ubuntu-${{ matrix.os-version }}-${{ steps.vars.outputs.sha_short }}
+
+  latest-tags:
+    runs-on: ubuntu-latest
+    name: Build ${{ matrix.name }}-latest
+    strategy:
+      matrix:
+        include:
+          - name: actions-runner
+            dockerfile: Dockerfile
+          - name: actions-runner-dind
+            dockerfile: Dockerfile.dindrunner
+    env:
+      RUNNER_VERSION: 2.277.1
+      DOCKER_VERSION: 19.03.12
+      DOCKERHUB_USERNAME: ${{ github.repository_owner }}
+    steps:
+
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+        with:
+          version: latest
+
+      - name: Login to DockerHub
+        uses: docker/login-action@v1
+        if: ${{ github.event_name == 'push' || github.event_name == 'release' }}
+        with:
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.DOCKER_ACCESS_TOKEN }}
+
+      - name: Build and Push Latest Tag
         uses: docker/build-push-action@v2
         with:
           context: ./runner
@@ -66,6 +120,4 @@ jobs:
             RUNNER_VERSION=${{ env.RUNNER_VERSION }}
             DOCKER_VERSION=${{ env.DOCKER_VERSION }}
           tags: |
-            ${{ env.DOCKERHUB_USERNAME }}/${{ matrix.name }}:v${{ env.RUNNER_VERSION }}
-            ${{ env.DOCKERHUB_USERNAME }}/${{ matrix.name }}:v${{ env.RUNNER_VERSION }}-${{ steps.vars.outputs.sha_short }}
             ${{ env.DOCKERHUB_USERNAME }}/${{ matrix.name }}:latest

CONTRIBUTING.md

@@ -0,0 +1,8 @@
+# Contributing
+
+### Helm Verison Bumps
+
+**Chart Version :** When bumping the chart version follow semantic versioning https://semver.org/<br />
+**App Version :** When bumping the app version you will also need to bump the chart verison too. Again, follow semantic verisoning when bumping the chart.
+
+To determine if you need tp bump the MAJOR, MINOR or PATCH versions you will need to review the changes between the previous app version and the new app verison and / or ask for a maintainer to advise.

Makefile

@@ -14,6 +14,8 @@ else
 GOBIN=$(shell go env GOBIN)
 endif
 
+TEST_ASSETS=$(PWD)/test-assets
+
 # default list of platforms for which multiarch image is built
 ifeq (${PLATFORMS}, )
 	export PLATFORMS="linux/amd64,linux/arm64"
@@ -37,6 +39,13 @@ all: manager
 test: generate fmt vet manifests
 	go test ./... -coverprofile cover.out
 
+test-with-deps: kube-apiserver etcd kubectl
+	# See https://pkg.go.dev/sigs.k8s.io/controller-runtime/pkg/envtest#pkg-constants
+	TEST_ASSET_KUBE_APISERVER=$(KUBE_APISERVER_BIN) \
+	TEST_ASSET_ETCD=$(ETCD_BIN) \
+	TEST_ASSET_KUBECTL=$(KUBECTL_BIN) \
+	  make test
+
 # Build manager binary
 manager: generate fmt vet
 	go build -o bin/manager main.go
@@ -126,7 +135,8 @@ release/clean:
 	rm -rf release
 
 .PHONY: acceptance
-acceptance: release/clean docker-build docker-push release
+acceptance: release/clean docker-build release
+	make acceptance/pull
 	ACCEPTANCE_TEST_SECRET_TYPE=token make acceptance/kind acceptance/setup acceptance/tests acceptance/teardown
 	ACCEPTANCE_TEST_SECRET_TYPE=app make acceptance/kind acceptance/setup acceptance/tests acceptance/teardown
 	ACCEPTANCE_TEST_DEPLOYMENT_TOOL=helm ACCEPTANCE_TEST_SECRET_TYPE=token make acceptance/kind acceptance/setup acceptance/tests acceptance/teardown
@@ -134,8 +144,23 @@ acceptance: release/clean docker-build docker-push release
 
 acceptance/kind:
 	kind create cluster --name acceptance
+	kind load docker-image ${NAME}:${VERSION} --name acceptance
+	kind load docker-image quay.io/brancz/kube-rbac-proxy:v0.8.0 --name acceptance
+	kind load docker-image summerwind/actions-runner:latest --name acceptance
+	kind load docker-image docker:dind --name acceptance
+	kind load docker-image quay.io/jetstack/cert-manager-controller:v1.0.4 --name acceptance
+	kind load docker-image quay.io/jetstack/cert-manager-cainjector:v1.0.4 --name acceptance
+	kind load docker-image quay.io/jetstack/cert-manager-webhook:v1.0.4 --name acceptance
 	kubectl cluster-info --context kind-acceptance
 
+acceptance/pull:
+	docker pull quay.io/brancz/kube-rbac-proxy:v0.8.0
+	docker pull summerwind/actions-runner:latest
+	docker pull docker:dind
+	docker pull quay.io/jetstack/cert-manager-controller:v1.0.4
+	docker pull quay.io/jetstack/cert-manager-cainjector:v1.0.4
+	docker pull quay.io/jetstack/cert-manager-webhook:v1.0.4
+
 acceptance/setup:
 	kubectl apply --validate=false -f https://github.com/jetstack/cert-manager/releases/download/v1.0.4/cert-manager.yaml	#kubectl create namespace actions-runner-system
 	kubectl -n cert-manager wait deploy/cert-manager-cainjector --for condition=available --timeout 60s
@@ -191,3 +216,66 @@ ifeq (, $(wildcard $(GOBIN)/yq))
 	}
 endif
 YQ=$(GOBIN)/yq
+
+OS_NAME := $(shell uname -s | tr A-Z a-z)
+
+# find or download etcd
+etcd:
+ifeq (, $(wildcard $(TEST_ASSETS)/etcd))
+	@{ \
+	set -xe ;\
+	INSTALL_TMP_DIR=$$(mktemp -d) ;\
+	cd $$INSTALL_TMP_DIR ;\
+	wget https://github.com/kubernetes-sigs/kubebuilder/releases/download/v2.3.2/kubebuilder_2.3.2_$(OS_NAME)_amd64.tar.gz ;\
+	mkdir -p $(TEST_ASSETS) ;\
+	tar zxvf kubebuilder_2.3.2_$(OS_NAME)_amd64.tar.gz ;\
+	mv kubebuilder_2.3.2_$(OS_NAME)_amd64/bin/etcd $(TEST_ASSETS)/etcd ;\
+	mv kubebuilder_2.3.2_$(OS_NAME)_amd64/bin/kube-apiserver $(TEST_ASSETS)/kube-apiserver ;\
+	mv kubebuilder_2.3.2_$(OS_NAME)_amd64/bin/kubectl $(TEST_ASSETS)/kubectl ;\
+	rm -rf $$INSTALL_TMP_DIR ;\
+	}
+ETCD_BIN=$(TEST_ASSETS)/etcd
+else
+ETCD_BIN=$(TEST_ASSETS)/etcd
+endif
+
+# find or download kube-apiserver
+kube-apiserver:
+ifeq (, $(wildcard $(TEST_ASSETS)/kube-apiserver))
+	@{ \
+	set -xe ;\
+	INSTALL_TMP_DIR=$$(mktemp -d) ;\
+	cd $$INSTALL_TMP_DIR ;\
+	wget https://github.com/kubernetes-sigs/kubebuilder/releases/download/v2.3.2/kubebuilder_2.3.2_$(OS_NAME)_amd64.tar.gz ;\
+	mkdir -p $(TEST_ASSETS) ;\
+	tar zxvf kubebuilder_2.3.2_$(OS_NAME)_amd64.tar.gz ;\
+	mv kubebuilder_2.3.2_$(OS_NAME)_amd64/bin/etcd $(TEST_ASSETS)/etcd ;\
+	mv kubebuilder_2.3.2_$(OS_NAME)_amd64/bin/kube-apiserver $(TEST_ASSETS)/kube-apiserver ;\
+	mv kubebuilder_2.3.2_$(OS_NAME)_amd64/bin/kubectl $(TEST_ASSETS)/kubectl ;\
+	rm -rf $$INSTALL_TMP_DIR ;\
+	}
+KUBE_APISERVER_BIN=$(TEST_ASSETS)/kube-apiserver
+else
+KUBE_APISERVER_BIN=$(TEST_ASSETS)/kube-apiserver
+endif
+
+
+# find or download kubectl
+kubectl:
+ifeq (, $(wildcard $(TEST_ASSETS)/kubectl))
+	@{ \
+	set -xe ;\
+	INSTALL_TMP_DIR=$$(mktemp -d) ;\
+	cd $$INSTALL_TMP_DIR ;\
+	wget https://github.com/kubernetes-sigs/kubebuilder/releases/download/v2.3.2/kubebuilder_2.3.2_$(OS_NAME)_amd64.tar.gz ;\
+	mkdir -p $(TEST_ASSETS) ;\
+	tar zxvf kubebuilder_2.3.2_$(OS_NAME)_amd64.tar.gz ;\
+	mv kubebuilder_2.3.2_$(OS_NAME)_amd64/bin/etcd $(TEST_ASSETS)/etcd ;\
+	mv kubebuilder_2.3.2_$(OS_NAME)_amd64/bin/kube-apiserver $(TEST_ASSETS)/kube-apiserver ;\
+	mv kubebuilder_2.3.2_$(OS_NAME)_amd64/bin/kubectl $(TEST_ASSETS)/kubectl ;\
+	rm -rf $$INSTALL_TMP_DIR ;\
+	}
+KUBECTL_BIN=$(TEST_ASSETS)/kubectl
+else
+KUBECTL_BIN=$(TEST_ASSETS)/kubectl
+endif

README.md

@@ -25,8 +25,7 @@ ToC:
   - [Using EKS IAM role for service accounts](#using-eks-iam-role-for-service-accounts)
   - [Software installed in the runner image](#software-installed-in-the-runner-image)
   - [Common errors](#common-errors)
-- [Developing](#developing)
-- [Alternatives](#alternatives)
+- [Contributing](#contributing)
 
 ## Motivation
 
@@ -45,8 +44,8 @@ Install the custom resource and actions-runner-controller with `kubectl` or `hel
 `kubectl`:
 
 ```shell
-# REPLACE "v0.17.0" with the version you wish to deploy
-kubectl apply -f https://github.com/summerwind/actions-runner-controller/releases/download/v0.17.0/actions-runner-controller.yaml
+# REPLACE "v0.18.2" with the version you wish to deploy
+kubectl apply -f https://github.com/summerwind/actions-runner-controller/releases/download/v0.18.2/actions-runner-controller.yaml
 ```
 
 `helm`:
@@ -61,7 +60,7 @@ helm upgrade --install -n actions-runner-system actions-runner-controller/action
 If you use either Github Enterprise Cloud or Server, you can use **actions-runner-controller**  with those, too.
 Authentication works same way as with public Github (repo and organization level).
 The minimum version of Github Enterprise Server is 3.0.0 (or rc1/rc2).
-__**NOTE : The maintainers do not have an Enterprise environment to be able to test changes and so are reliant on the community for testing, support is a best endeavors basis only and is community driven**__
+__**NOTE : The maintainers do not have an Enterprise environment to be able to test changes and so this feature is community driven. Support is on a best endeavors basis.**__
 
 ```shell
 kubectl set env deploy controller-manager -c manager GITHUB_ENTERPRISE_URL=<GHEC/S URL> --namespace actions-runner-system
@@ -88,7 +87,6 @@ spec:
   template:
     spec:
       enterprise: your-enterprise-name
-      dockerdWithinRunnerContainer: true
       resources:
         limits:
           cpu: "4000m"
@@ -96,12 +94,6 @@ spec:
         requests:
           cpu: "200m"
           memory: "200Mi"
-      volumeMounts:
-      - mountPath: /runner
-        name: runner
-      volumes:
-      - name: runner
-        emptyDir: {}
 
 ```
 
@@ -163,7 +155,7 @@ Log-in to a GitHub account that has `admin` privileges for the repository, and [
 
 * repo (Full control)
 
-**Scopes for a Organisation Runner**
+**Scopes for a Organization Runner**
 
 * repo (Full control)
 * admin:org (Full control)
@@ -292,7 +284,7 @@ A `RunnerDeployment` can scale the number of runners between `minReplicas` and `
 
 **TotalNumberOfQueuedAndInProgressWorkflowRuns**
 
-In the below example, `actions-runner` will pole GitHub for all pending workflows with the pole period defined by the sync period configuration. It will then scale to e.g. 3 if there're 3 pending jobs at sync time.
+In the below example, `actions-runner` will poll GitHub for all pending workflows with the poll period defined by the sync period configuration. It will then scale to e.g. 3 if there're 3 pending jobs at sync time.
 With this scaling metric we are required to define a list of repositories within our metric.
 
 The scale out performance is controlled via the manager containers startup `--sync-period` argument. The default value is set to 10 minutes to prevent default deployments rate limiting themselves from the GitHub API.
@@ -349,7 +341,7 @@ spec:
 
 **PercentageRunnersBusy**
 
-The `HorizontalRunnerAutoscaler` will pole GitHub based on the configuration sync period for the number of busy runners which live in the RunnerDeployment's namespace and scale based on the settings
+The `HorizontalRunnerAutoscaler` will poll GitHub based on the configuration sync period for the number of busy runners which live in the RunnerDeployment's namespace and scale based on the settings
 
 **Kustomize Config :** The period can be customised in the `config/default/manager_auth_proxy_patch.yaml` patch<br />
 **Helm Config :** `syncPeriod`
@@ -419,11 +411,11 @@ spec:
 > Please get prepared to put some time and effort to learn and leverage this feature!
 
 `actions-runner-controller` has an optional Webhook server that receives GitHub Webhook events and scale
-[`RunnerDeployment`s](#runnerdeployments) by updating corresponding [`HorizontalRunnerAutoscaler`s](#autoscaling).
+[`RunnerDeployments`](#runnerdeployments) by updating corresponding [`HorizontalRunnerAutoscalers`](#autoscaling).
 
 Today, the Webhook server can be configured to respond GitHub `check_run`, `pull_request`, and `push` events
 by scaling up the matching `HorizontalRunnerAutoscaler` by N replica(s), where `N` is configurable within
-`HorizontalRunerAutoscaler`'s `Spec`.
+`HorizontalRunerAutoscaler's` `Spec`.
 
 More concretely, you can configure the targeted GitHub event types and the `N` in
 `scaleUpTriggers`:
@@ -613,6 +605,17 @@ spec:
       # You can customise this setting allowing you to change the default working directory location
       # for example, the below setting is the same as on the ubuntu-18.04 image
       workDir: /home/runner/work
+      # You can mount some of the shared volumes to the dind container using dockerVolumeMounts, like any other volume mounting.
+      # NOTE: in case you want to use an hostPath like the following example, make sure that Kubernetes doesn't schedule more than one runner
+      # per physical host. You can achieve that by setting pod anti-affinity rules and/or resource requests/limits.
+      volumes:
+        - name: docker-extra
+          hostPath:
+            path: /mnt/docker-extra
+            type: DirectoryOrCreate
+      dockerVolumeMounts:
+        - mountPath: /var/lib/docker
+          name: docker-extra
 ```
 
 ### Runner labels
@@ -745,8 +748,11 @@ Your base64'ed PAT token has a new line at the end, it needs to be created witho
 * `echo -n $TOKEN | base64`
 * Create the secret as described in the docs using the shell and documeneted flags
 
-# Developing
+# Contributing
 
+For more details about any requirements or process, please check out [Getting Started with Contributing](CONTRIBUTING.md).
+
+**The Controller**<br />
 If you'd like to modify the controller to fork or contribute, I'd suggest using the following snippet for running
 the acceptance test:
 
@@ -759,7 +765,7 @@ NAME=$DOCKER_USER/actions-runner-controller \
   APP_ID=*** \
   PRIVATE_KEY_FILE_PATH=path/to/pem/file \
   INSTALLATION_ID=*** \
-  make docker-build docker-push acceptance
+  make docker-build acceptance
 ```
 
 Please follow the instructions explained in [Using Personal Access Token](#using-personal-access-token) to obtain
@@ -780,19 +786,9 @@ NAME=$DOCKER_USER/actions-runner-controller \
   PRIVATE_KEY_FILE_PATH=path/to/pem/file \
   INSTALLATION_ID=*** \
   ACCEPTANCE_TEST_SECRET_TYPE=token \
-  make docker-build docker-push \
-       acceptance/setup acceptance/tests
+  make docker-build acceptance/setup \
+       acceptance/tests
 ```
-# Alternatives
 
-The following is a list of alternative solutions that may better fit you depending on your use-case:
-
-- <https://github.com/evryfs/github-actions-runner-operator/>
-- <https://github.com/philips-labs/terraform-aws-github-runner/>
-
-Although the situation can change over time, as of writing this sentence, the benefits of using `actions-runner-controller` over the alternatives are:
-
-- `actions-runner-controller` has the ability to autoscale runners based on number of pending/progressing jobs (#99)
-- `actions-runner-controller` is able to gracefully stop runners (#103)
-- `actions-runner-controller` has ARM support
-- `actions-runner-controller` has GitHub Enterprise support (see [GitHub Enterprise support](#github-enterprise-support) section for caveats)
+**Runner Tests**<br />
+A set of example pipelines (./acceptance/pipelines) are provided in this repository which you can use to validate your runners are working as expected. When raising a PR please run the relevant suites to prove your change hasn't broken anything.

acceptance/checks.sh

@@ -12,6 +12,9 @@ done
 
 echo Found runner ${runner_name}.
 
+# Wait a bit to make sure the runner pod is created before looking for it.
+sleep 2
+
 pod_name=
 
 while [ -z "${pod_name}" ]; do
@@ -24,6 +27,6 @@ echo Found pod ${pod_name}.
 
 echo Waiting for pod ${runner_name} to become ready... 1>&2
 
-kubectl wait pod/${runner_name} --for condition=ready --timeout 180s
+kubectl wait pod/${runner_name} --for condition=ready --timeout 270s
 
 echo All tests passed. 1>&2

acceptance/deploy.sh

@@ -26,13 +26,14 @@ if [ "${tool}" == "helm" ]; then
     charts/actions-runner-controller \
     -n actions-runner-system \
     --create-namespace \
-    --set syncPeriod=5m
-  kubectl -n actions-runner-system wait deploy/actions-runner-controller --for condition=available
+    --set syncPeriod=5m \
+    --set authSecret.create=false
+  kubectl -n actions-runner-system wait deploy/actions-runner-controller --for condition=available --timeout 60s
 else
   kubectl apply \
     -n actions-runner-system \
     -f release/actions-runner-controller.yaml
-  kubectl -n actions-runner-system wait deploy/controller-manager --for condition=available --timeout 60s
+  kubectl -n actions-runner-system wait deploy/controller-manager --for condition=available --timeout 120s
 fi
 
 # Adhocly wait for some time until actions-runner-controller's admission webhook gets ready

acceptance/pipelines/eks-integration-tests.yaml

@@ -0,0 +1,36 @@
+name: EKS Integration Tests
+
+on:
+  workflow_dispatch:
+
+env:
+  IRSA_ROLE_ARN:
+  ASSUME_ROLE_ARN: 
+  AWS_REGION: 
+
+jobs:
+  assume-role-in-runner-test:
+    runs-on: ['self-hosted', 'Linux']
+    steps:
+      - name: Test aws-actions/configure-aws-credentials Action
+        uses: aws-actions/configure-aws-credentials@v1
+        with:
+          aws-region: ${{ env.AWS_REGION }}
+          role-to-assume: ${{ env.ASSUME_ROLE_ARN }}
+          role-duration-seconds: 900
+  assume-role-in-container-test:
+    runs-on: ['self-hosted', 'Linux']
+    container: 
+      image: amazon/aws-cli
+      env:
+        AWS_WEB_IDENTITY_TOKEN_FILE: /var/run/secrets/eks.amazonaws.com/serviceaccount/token
+        AWS_ROLE_ARN: ${{ env.IRSA_ROLE_ARN }}
+      volumes:
+        - /var/run/secrets/eks.amazonaws.com/serviceaccount/token:/var/run/secrets/eks.amazonaws.com/serviceaccount/token
+    steps:
+      - name: Test aws-actions/configure-aws-credentials Action in container
+        uses: aws-actions/configure-aws-credentials@v1
+        with:
+          aws-region: ${{ env.AWS_REGION }}
+          role-to-assume: ${{ env.ASSUME_ROLE_ARN }}
+          role-duration-seconds: 900

acceptance/pipelines/runner-integration-tests.yaml

@@ -0,0 +1,83 @@
+name: Runner Integration Tests
+
+on:
+  workflow_dispatch:
+
+env:
+  ImageOS: ubuntu18 # Used by ruby/setup-ruby action | Update me for the runner OS version you are testing against
+
+jobs:
+  run-step-in-container-test:
+    runs-on: ['self-hosted', 'Linux']
+    container: 
+      image: alpine
+    steps:
+      - name: Test we are working in the container
+        run: |
+          if [[ $(sed -n '2p' < /etc/os-release | cut -d "=" -f2) != "alpine" ]]; then
+              echo "::error ::Failed OS detection test, could not match /etc/os-release with alpine. Are we really running in the container?"
+              echo "/etc/os-release below:"
+              cat /etc/os-release
+              exit 1
+          fi
+  setup-python-test:
+    runs-on: ['self-hosted', 'Linux']
+    steps:
+      - name: Print native Python environment
+        run: |
+          which python
+          python --version
+      - uses: actions/setup-python@v2
+        with:
+          python-version: 3.9
+      - name: Test actions/setup-python works
+        run: |
+          VERSION=$(python --version 2>&1 | cut -d ' ' -f2 | cut -d '.' -f1-2)
+          if [[ $VERSION != '3.9' ]]; then
+            echo "Python version detected : $(python --version 2>&1)"
+            echo "::error ::Detected python failed setup version test, could not match version with version specified in the setup action"
+            exit 1
+          else
+            echo "Python version detected : $(python --version 2>&1)"
+          fi
+  setup-node-test:
+    runs-on: ['self-hosted', 'Linux']
+    steps:
+      - uses: actions/setup-node@v2
+        with:
+          node-version: '12'
+      - name: Test actions/setup-node works 
+        run: |
+          VERSION=$(node --version | cut -c 2- | cut -d '.' -f1)
+          if [[ $VERSION != '12' ]]; then
+            echo "Node version detected : $(node --version 2>&1)"
+            echo "::error ::Detected node failed setup version test, could not match version with version specified in the setup action"
+            exit 1
+          else
+            echo "Node version detected : $(node --version 2>&1)"
+          fi
+  setup-ruby-test:
+    runs-on: ['self-hosted', 'Linux']
+    steps:
+      - uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: 3.0
+          bundler-cache: true
+      - name: Test ruby/setup-ruby works 
+        run: |
+          VERSION=$(ruby --version | cut -d ' ' -f2 | cut -d '.' -f1-2)
+          if [[ $VERSION != '3.0' ]]; then
+              echo "Ruby version detected : $(ruby --version 2>&1)"
+              echo "::error ::Detected ruby failed setup version test, could not match version with version specified in the setup action"
+              exit 1
+          else
+              echo "Ruby version detected : $(ruby --version 2>&1)"
+          fi
+  python-shell-test:
+    runs-on: ['self-hosted', 'Linux']
+    steps:      
+      - name: Test Python shell works
+        run: |
+          import os
+          print(os.environ['PATH'])
+        shell: python

acceptance/testdata/runnerdeploy.yaml

@@ -7,3 +7,14 @@ spec:
   template:
     spec:
       repository: mumoshu/actions-runner-controller-ci
+      #
+      # dockerd within runner container
+      #
+      ## Replace `mumoshu/actions-runner-dind:dev` with your dind image
+      #dockerdWithinRunnerContainer: true
+      #image: mumoshu/actions-runner-dind:dev
+
+      #
+      # Set the MTU used by dockerd-managed network interfaces (including docker-build-ubuntu)
+      #
+      #dockerMTU: 1450

api/v1alpha1/horizontalrunnerautoscaler_types.go

@@ -156,6 +156,7 @@ type HorizontalRunnerAutoscalerStatus struct {
 	DesiredReplicas *int `json:"desiredReplicas,omitempty"`
 
 	// +optional
+	// +nullable
 	LastSuccessfulScaleOutTime *metav1.Time `json:"lastSuccessfulScaleOutTime,omitempty"`
 
 	// +optional

api/v1alpha1/runner_types.go

@@ -18,6 +18,7 @@ package v1alpha1
 
 import (
 	"errors"
+	"k8s.io/apimachinery/pkg/api/resource"
 
 	corev1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
@@ -48,6 +49,8 @@ type RunnerSpec struct {
 	// +optional
 	DockerdContainerResources corev1.ResourceRequirements `json:"dockerdContainerResources,omitempty"`
 	// +optional
+	DockerVolumeMounts []corev1.VolumeMount `json:"dockerVolumeMounts,omitempty"`
+	// +optional
 	Resources corev1.ResourceRequirements `json:"resources,omitempty"`
 	// +optional
 	VolumeMounts []corev1.VolumeMount `json:"volumeMounts,omitempty"`
@@ -94,6 +97,10 @@ type RunnerSpec struct {
 	DockerEnabled *bool `json:"dockerEnabled,omitempty"`
 	// +optional
 	DockerMTU *int64 `json:"dockerMTU,omitempty"`
+	// +optional
+	HostAliases []corev1.HostAlias `json:"hostAliases,omitempty"`
+	// +optional
+	VolumeSizeLimit *resource.Quantity `json:"volumeSizeLimit,omitempty"`
 }
 
 // ValidateRepository validates repository field.
@@ -121,13 +128,17 @@ func (rs *RunnerSpec) ValidateRepository() error {
 
 // RunnerStatus defines the observed state of Runner
 type RunnerStatus struct {
+	// +optional
 	Registration RunnerStatusRegistration `json:"registration"`
-	Phase        string                   `json:"phase"`
-	Reason       string                   `json:"reason"`
-	Message      string                   `json:"message"`
-
-	//+optional
-	LastRegistrationCheckTime *metav1.Time `json:"lastRegistrationCheckTime"`
+	// +optional
+	Phase string `json:"phase,omitempty"`
+	// +optional
+	Reason string `json:"reason,omitempty"`
+	// +optional
+	Message string `json:"message,omitempty"`
+	// +optional
+	// +nullable
+	LastRegistrationCheckTime *metav1.Time `json:"lastRegistrationCheckTime,omitempty"`
 }
 
 // RunnerStatusRegistration contains runner registration status

api/v1alpha1/zz_generated.deepcopy.go

@@ -595,6 +595,13 @@ func (in *RunnerSpec) DeepCopyInto(out *RunnerSpec) {
 		}
 	}
 	in.DockerdContainerResources.DeepCopyInto(&out.DockerdContainerResources)
+	if in.DockerVolumeMounts != nil {
+		in, out := &in.DockerVolumeMounts, &out.DockerVolumeMounts
+		*out = make([]v1.VolumeMount, len(*in))
+		for i := range *in {
+			(*in)[i].DeepCopyInto(&(*out)[i])
+		}
+	}
 	in.Resources.DeepCopyInto(&out.Resources)
 	if in.VolumeMounts != nil {
 		in, out := &in.VolumeMounts, &out.VolumeMounts
@@ -699,6 +706,18 @@ func (in *RunnerSpec) DeepCopyInto(out *RunnerSpec) {
 		*out = new(int64)
 		**out = **in
 	}
+	if in.HostAliases != nil {
+		in, out := &in.HostAliases, &out.HostAliases
+		*out = make([]v1.HostAlias, len(*in))
+		for i := range *in {
+			(*in)[i].DeepCopyInto(&(*out)[i])
+		}
+	}
+	if in.VolumeSizeLimit != nil {
+		in, out := &in.VolumeSizeLimit, &out.VolumeSizeLimit
+		x := (*in).DeepCopy()
+		*out = &x
+	}
 }
 
 // DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new RunnerSpec.

charts/actions-runner-controller/Chart.yaml

@@ -15,7 +15,10 @@ type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 0.10.0
+version: 0.11.0
+
+# Used as the default manager tag value when no tag property is provided in the values.yaml
+appVersion: 0.18.2
 
 home: https://github.com/summerwind/actions-runner-controller
 

charts/actions-runner-controller/crds/actions.summerwind.dev_horizontalrunnerautoscalers.yaml

@@ -207,6 +207,7 @@ spec:
               type: integer
             lastSuccessfulScaleOutTime:
               format: date-time
+              nullable: true
               type: string
             observedGeneration:
               description: ObservedGeneration is the most recent generation observed

charts/actions-runner-controller/crds/actions.summerwind.dev_runnerdeployments.yaml

@@ -436,6 +436,33 @@ spec:
                     dockerMTU:
                       format: int64
                       type: integer
+                    dockerVolumeMounts:
+                      items:
+                        description: VolumeMount describes a mounting of a Volume within a container.
+                        properties:
+                          mountPath:
+                            description: Path within the container at which the volume should be mounted.  Must not contain ':'.
+                            type: string
+                          mountPropagation:
+                            description: mountPropagation determines how mounts are propagated from the host to container and the other way around. When not set, MountPropagationNone is used. This field is beta in 1.10.
+                            type: string
+                          name:
+                            description: This must match the Name of a Volume.
+                            type: string
+                          readOnly:
+                            description: Mounted read-only if true, read-write otherwise (false or unspecified). Defaults to false.
+                            type: boolean
+                          subPath:
+                            description: Path within the volume from which the container's volume should be mounted. Defaults to "" (volume's root).
+                            type: string
+                          subPathExpr:
+                            description: Expanded path within the volume from which the container's volume should be mounted. Behaves similarly to SubPath but environment variable references $(VAR_NAME) are expanded using the container's environment. Defaults to "" (volume's root). SubPathExpr and SubPath are mutually exclusive. This field is beta in 1.15.
+                            type: string
+                        required:
+                          - mountPath
+                          - name
+                        type: object
+                      type: array
                     dockerdContainerResources:
                       description: ResourceRequirements describes the compute resource requirements.
                       properties:
@@ -580,6 +607,20 @@ spec:
                       type: array
                     group:
                       type: string
+                    hostAliases:
+                      items:
+                        description: HostAlias holds the mapping between IP and hostnames that will be injected as an entry in the pod's hosts file.
+                        properties:
+                          hostnames:
+                            description: Hostnames for the above IP address.
+                            items:
+                              type: string
+                            type: array
+                          ip:
+                            description: IP address of the host file entry.
+                            type: string
+                        type: object
+                      type: array
                     image:
                       type: string
                     imagePullPolicy:
@@ -768,6 +809,12 @@ spec:
                           - name
                         type: object
                       type: array
+                    volumeSizeLimit:
+                      anyOf:
+                        - type: integer
+                        - type: string
+                      pattern: ^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$
+                      x-kubernetes-int-or-string: true
                     volumes:
                       items:
                         description: Volume represents a named volume in a pod that may be accessed by any container in the pod.

charts/actions-runner-controller/crds/actions.summerwind.dev_runnerreplicasets.yaml

@@ -436,6 +436,33 @@ spec:
                     dockerMTU:
                       format: int64
                       type: integer
+                    dockerVolumeMounts:
+                      items:
+                        description: VolumeMount describes a mounting of a Volume within a container.
+                        properties:
+                          mountPath:
+                            description: Path within the container at which the volume should be mounted.  Must not contain ':'.
+                            type: string
+                          mountPropagation:
+                            description: mountPropagation determines how mounts are propagated from the host to container and the other way around. When not set, MountPropagationNone is used. This field is beta in 1.10.
+                            type: string
+                          name:
+                            description: This must match the Name of a Volume.
+                            type: string
+                          readOnly:
+                            description: Mounted read-only if true, read-write otherwise (false or unspecified). Defaults to false.
+                            type: boolean
+                          subPath:
+                            description: Path within the volume from which the container's volume should be mounted. Defaults to "" (volume's root).
+                            type: string
+                          subPathExpr:
+                            description: Expanded path within the volume from which the container's volume should be mounted. Behaves similarly to SubPath but environment variable references $(VAR_NAME) are expanded using the container's environment. Defaults to "" (volume's root). SubPathExpr and SubPath are mutually exclusive. This field is beta in 1.15.
+                            type: string
+                        required:
+                          - mountPath
+                          - name
+                        type: object
+                      type: array
                     dockerdContainerResources:
                       description: ResourceRequirements describes the compute resource requirements.
                       properties:
@@ -580,6 +607,20 @@ spec:
                       type: array
                     group:
                       type: string
+                    hostAliases:
+                      items:
+                        description: HostAlias holds the mapping between IP and hostnames that will be injected as an entry in the pod's hosts file.
+                        properties:
+                          hostnames:
+                            description: Hostnames for the above IP address.
+                            items:
+                              type: string
+                            type: array
+                          ip:
+                            description: IP address of the host file entry.
+                            type: string
+                        type: object
+                      type: array
                     image:
                       type: string
                     imagePullPolicy:
@@ -768,6 +809,12 @@ spec:
                           - name
                         type: object
                       type: array
+                    volumeSizeLimit:
+                      anyOf:
+                        - type: integer
+                        - type: string
+                      pattern: ^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$
+                      x-kubernetes-int-or-string: true
                     volumes:
                       items:
                         description: Volume represents a named volume in a pod that may be accessed by any container in the pod.

charts/actions-runner-controller/crds/actions.summerwind.dev_runners.yaml

@@ -401,6 +401,33 @@ spec:
             dockerMTU:
               format: int64
               type: integer
+            dockerVolumeMounts:
+              items:
+                description: VolumeMount describes a mounting of a Volume within a container.
+                properties:
+                  mountPath:
+                    description: Path within the container at which the volume should be mounted.  Must not contain ':'.
+                    type: string
+                  mountPropagation:
+                    description: mountPropagation determines how mounts are propagated from the host to container and the other way around. When not set, MountPropagationNone is used. This field is beta in 1.10.
+                    type: string
+                  name:
+                    description: This must match the Name of a Volume.
+                    type: string
+                  readOnly:
+                    description: Mounted read-only if true, read-write otherwise (false or unspecified). Defaults to false.
+                    type: boolean
+                  subPath:
+                    description: Path within the volume from which the container's volume should be mounted. Defaults to "" (volume's root).
+                    type: string
+                  subPathExpr:
+                    description: Expanded path within the volume from which the container's volume should be mounted. Behaves similarly to SubPath but environment variable references $(VAR_NAME) are expanded using the container's environment. Defaults to "" (volume's root). SubPathExpr and SubPath are mutually exclusive. This field is beta in 1.15.
+                    type: string
+                required:
+                  - mountPath
+                  - name
+                type: object
+              type: array
             dockerdContainerResources:
               description: ResourceRequirements describes the compute resource requirements.
               properties:
@@ -545,6 +572,20 @@ spec:
               type: array
             group:
               type: string
+            hostAliases:
+              items:
+                description: HostAlias holds the mapping between IP and hostnames that will be injected as an entry in the pod's hosts file.
+                properties:
+                  hostnames:
+                    description: Hostnames for the above IP address.
+                    items:
+                      type: string
+                    type: array
+                  ip:
+                    description: IP address of the host file entry.
+                    type: string
+                type: object
+              type: array
             image:
               type: string
             imagePullPolicy:
@@ -733,6 +774,12 @@ spec:
                   - name
                 type: object
               type: array
+            volumeSizeLimit:
+              anyOf:
+                - type: integer
+                - type: string
+              pattern: ^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$
+              x-kubernetes-int-or-string: true
             volumes:
               items:
                 description: Volume represents a named volume in a pod that may be accessed by any container in the pod.
@@ -1543,6 +1590,7 @@ spec:
           properties:
             lastRegistrationCheckTime:
               format: date-time
+              nullable: true
               type: string
             message:
               type: string
@@ -1572,11 +1620,6 @@ spec:
                 - expiresAt
                 - token
               type: object
-          required:
-            - message
-            - phase
-            - reason
-            - registration
           type: object
       type: object
   version: v1alpha1

charts/actions-runner-controller/templates/certificate.yaml

@@ -5,7 +5,7 @@ apiVersion: cert-manager.io/v1
 kind: Issuer
 metadata:
   name: {{ include "actions-runner-controller.selfsignedIssuerName" . }}
-  namespace: {{ .Namespace }}
+  namespace: {{ .Release.Namespace }}
 spec:
   selfSigned: {}
 ---
@@ -13,7 +13,7 @@ apiVersion: cert-manager.io/v1
 kind: Certificate
 metadata:
   name: {{ include "actions-runner-controller.servingCertName" . }}
-  namespace: {{ .Namespace }}
+  namespace: {{ .Release.Namespace }}
 spec:
   dnsNames:
   - {{ include "actions-runner-controller.webhookServiceName" . }}.{{ .Release.Namespace }}.svc

charts/actions-runner-controller/templates/deployment.yaml

@@ -65,7 +65,7 @@ spec:
         - name: {{ $key }}
           value: {{ $val | quote }}
         {{- end }}
-        image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
+        image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default (cat "v" .Chart.AppVersion | replace " " "") }}"
         name: manager
         imagePullPolicy: {{ .Values.image.pullPolicy }}
         ports:

charts/actions-runner-controller/templates/githubwebhook.deployment.yaml

@@ -47,7 +47,7 @@ spec:
         - name: {{ $key }}
           value: {{ $val | quote }}
         {{- end }}
-        image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
+        image: "{{ .Values.image.repository }}:{{ .Values.image.tag  | default (cat "v" .Chart.AppVersion | replace " " "") }}"
         name: github-webhook-server
         imagePullPolicy: {{ .Values.image.pullPolicy }}
         ports:

charts/actions-runner-controller/templates/githubwebhook.ingress.yaml

@@ -1,6 +1,6 @@
 {{- if .Values.githubWebhookServer.ingress.enabled -}}
 {{- $fullName := include "actions-runner-controller-github-webhook-server.fullname" . -}}
-{{- $svcPort := .Values.githubWebhookServer.service.port -}}
+{{- $svcPort := (index .Values.githubWebhookServer.service.ports 0).port -}}
 {{- if semverCompare ">=1.14-0" .Capabilities.KubeVersion.GitVersion -}}
 apiVersion: networking.k8s.io/v1beta1
 {{- else -}}

charts/actions-runner-controller/values.yaml

@@ -22,7 +22,6 @@ authSecret:
 
 image:
   repository: summerwind/actions-runner-controller
-  tag: "v0.17.0"
   dindSidecarRepositoryAndTag: "docker:dind"
   pullPolicy: IfNotPresent
 

config/crd/bases/actions.summerwind.dev_horizontalrunnerautoscalers.yaml

@@ -207,6 +207,7 @@ spec:
               type: integer
             lastSuccessfulScaleOutTime:
               format: date-time
+              nullable: true
               type: string
             observedGeneration:
               description: ObservedGeneration is the most recent generation observed

config/crd/bases/actions.summerwind.dev_runnerdeployments.yaml

@@ -436,6 +436,33 @@ spec:
                     dockerMTU:
                       format: int64
                       type: integer
+                    dockerVolumeMounts:
+                      items:
+                        description: VolumeMount describes a mounting of a Volume within a container.
+                        properties:
+                          mountPath:
+                            description: Path within the container at which the volume should be mounted.  Must not contain ':'.
+                            type: string
+                          mountPropagation:
+                            description: mountPropagation determines how mounts are propagated from the host to container and the other way around. When not set, MountPropagationNone is used. This field is beta in 1.10.
+                            type: string
+                          name:
+                            description: This must match the Name of a Volume.
+                            type: string
+                          readOnly:
+                            description: Mounted read-only if true, read-write otherwise (false or unspecified). Defaults to false.
+                            type: boolean
+                          subPath:
+                            description: Path within the volume from which the container's volume should be mounted. Defaults to "" (volume's root).
+                            type: string
+                          subPathExpr:
+                            description: Expanded path within the volume from which the container's volume should be mounted. Behaves similarly to SubPath but environment variable references $(VAR_NAME) are expanded using the container's environment. Defaults to "" (volume's root). SubPathExpr and SubPath are mutually exclusive. This field is beta in 1.15.
+                            type: string
+                        required:
+                          - mountPath
+                          - name
+                        type: object
+                      type: array
                     dockerdContainerResources:
                       description: ResourceRequirements describes the compute resource requirements.
                       properties:
@@ -580,6 +607,20 @@ spec:
                       type: array
                     group:
                       type: string
+                    hostAliases:
+                      items:
+                        description: HostAlias holds the mapping between IP and hostnames that will be injected as an entry in the pod's hosts file.
+                        properties:
+                          hostnames:
+                            description: Hostnames for the above IP address.
+                            items:
+                              type: string
+                            type: array
+                          ip:
+                            description: IP address of the host file entry.
+                            type: string
+                        type: object
+                      type: array
                     image:
                       type: string
                     imagePullPolicy:
@@ -768,6 +809,12 @@ spec:
                           - name
                         type: object
                       type: array
+                    volumeSizeLimit:
+                      anyOf:
+                        - type: integer
+                        - type: string
+                      pattern: ^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$
+                      x-kubernetes-int-or-string: true
                     volumes:
                       items:
                         description: Volume represents a named volume in a pod that may be accessed by any container in the pod.

config/crd/bases/actions.summerwind.dev_runnerreplicasets.yaml

@@ -436,6 +436,33 @@ spec:
                     dockerMTU:
                       format: int64
                       type: integer
+                    dockerVolumeMounts:
+                      items:
+                        description: VolumeMount describes a mounting of a Volume within a container.
+                        properties:
+                          mountPath:
+                            description: Path within the container at which the volume should be mounted.  Must not contain ':'.
+                            type: string
+                          mountPropagation:
+                            description: mountPropagation determines how mounts are propagated from the host to container and the other way around. When not set, MountPropagationNone is used. This field is beta in 1.10.
+                            type: string
+                          name:
+                            description: This must match the Name of a Volume.
+                            type: string
+                          readOnly:
+                            description: Mounted read-only if true, read-write otherwise (false or unspecified). Defaults to false.
+                            type: boolean
+                          subPath:
+                            description: Path within the volume from which the container's volume should be mounted. Defaults to "" (volume's root).
+                            type: string
+                          subPathExpr:
+                            description: Expanded path within the volume from which the container's volume should be mounted. Behaves similarly to SubPath but environment variable references $(VAR_NAME) are expanded using the container's environment. Defaults to "" (volume's root). SubPathExpr and SubPath are mutually exclusive. This field is beta in 1.15.
+                            type: string
+                        required:
+                          - mountPath
+                          - name
+                        type: object
+                      type: array
                     dockerdContainerResources:
                       description: ResourceRequirements describes the compute resource requirements.
                       properties:
@@ -580,6 +607,20 @@ spec:
                       type: array
                     group:
                       type: string
+                    hostAliases:
+                      items:
+                        description: HostAlias holds the mapping between IP and hostnames that will be injected as an entry in the pod's hosts file.
+                        properties:
+                          hostnames:
+                            description: Hostnames for the above IP address.
+                            items:
+                              type: string
+                            type: array
+                          ip:
+                            description: IP address of the host file entry.
+                            type: string
+                        type: object
+                      type: array
                     image:
                       type: string
                     imagePullPolicy:
@@ -768,6 +809,12 @@ spec:
                           - name
                         type: object
                       type: array
+                    volumeSizeLimit:
+                      anyOf:
+                        - type: integer
+                        - type: string
+                      pattern: ^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$
+                      x-kubernetes-int-or-string: true
                     volumes:
                       items:
                         description: Volume represents a named volume in a pod that may be accessed by any container in the pod.

config/crd/bases/actions.summerwind.dev_runners.yaml

@@ -401,6 +401,33 @@ spec:
             dockerMTU:
               format: int64
               type: integer
+            dockerVolumeMounts:
+              items:
+                description: VolumeMount describes a mounting of a Volume within a container.
+                properties:
+                  mountPath:
+                    description: Path within the container at which the volume should be mounted.  Must not contain ':'.
+                    type: string
+                  mountPropagation:
+                    description: mountPropagation determines how mounts are propagated from the host to container and the other way around. When not set, MountPropagationNone is used. This field is beta in 1.10.
+                    type: string
+                  name:
+                    description: This must match the Name of a Volume.
+                    type: string
+                  readOnly:
+                    description: Mounted read-only if true, read-write otherwise (false or unspecified). Defaults to false.
+                    type: boolean
+                  subPath:
+                    description: Path within the volume from which the container's volume should be mounted. Defaults to "" (volume's root).
+                    type: string
+                  subPathExpr:
+                    description: Expanded path within the volume from which the container's volume should be mounted. Behaves similarly to SubPath but environment variable references $(VAR_NAME) are expanded using the container's environment. Defaults to "" (volume's root). SubPathExpr and SubPath are mutually exclusive. This field is beta in 1.15.
+                    type: string
+                required:
+                  - mountPath
+                  - name
+                type: object
+              type: array
             dockerdContainerResources:
               description: ResourceRequirements describes the compute resource requirements.
               properties:
@@ -545,6 +572,20 @@ spec:
               type: array
             group:
               type: string
+            hostAliases:
+              items:
+                description: HostAlias holds the mapping between IP and hostnames that will be injected as an entry in the pod's hosts file.
+                properties:
+                  hostnames:
+                    description: Hostnames for the above IP address.
+                    items:
+                      type: string
+                    type: array
+                  ip:
+                    description: IP address of the host file entry.
+                    type: string
+                type: object
+              type: array
             image:
               type: string
             imagePullPolicy:
@@ -733,6 +774,12 @@ spec:
                   - name
                 type: object
               type: array
+            volumeSizeLimit:
+              anyOf:
+                - type: integer
+                - type: string
+              pattern: ^(\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))(([KMGTPE]i)|[numkMGTPE]|([eE](\+|-)?(([0-9]+(\.[0-9]*)?)|(\.[0-9]+))))?$
+              x-kubernetes-int-or-string: true
             volumes:
               items:
                 description: Volume represents a named volume in a pod that may be accessed by any container in the pod.
@@ -1543,6 +1590,7 @@ spec:
           properties:
             lastRegistrationCheckTime:
               format: date-time
+              nullable: true
               type: string
             message:
               type: string
@@ -1572,11 +1620,6 @@ spec:
                 - expiresAt
                 - token
               type: object
-          required:
-            - message
-            - phase
-            - reason
-            - registration
           type: object
       type: object
   version: v1alpha1

controllers/autoscaling.go

@@ -34,7 +34,7 @@ func getValueAvailableAt(now time.Time, from, to *time.Time, reservedValue int)
 	return &reservedValue
 }
 
-func (r *HorizontalRunnerAutoscalerReconciler) getDesiredReplicasFromCache(hra v1alpha1.HorizontalRunnerAutoscaler) *int {
+func (r *HorizontalRunnerAutoscalerReconciler) fetchSuggestedReplicasFromCache(hra v1alpha1.HorizontalRunnerAutoscaler) *int {
 	var entry *v1alpha1.CacheEntry
 
 	for i := range hra.Status.CacheEntries {
@@ -63,7 +63,7 @@ func (r *HorizontalRunnerAutoscalerReconciler) getDesiredReplicasFromCache(hra v
 	return nil
 }
 
-func (r *HorizontalRunnerAutoscalerReconciler) determineDesiredReplicas(rd v1alpha1.RunnerDeployment, hra v1alpha1.HorizontalRunnerAutoscaler) (*int, error) {
+func (r *HorizontalRunnerAutoscalerReconciler) suggestDesiredReplicas(rd v1alpha1.RunnerDeployment, hra v1alpha1.HorizontalRunnerAutoscaler) (*int, error) {
 	if hra.Spec.MinReplicas == nil {
 		return nil, fmt.Errorf("horizontalrunnerautoscaler %s/%s is missing minReplicas", hra.Namespace, hra.Name)
 	} else if hra.Spec.MaxReplicas == nil {
@@ -73,20 +73,20 @@ func (r *HorizontalRunnerAutoscalerReconciler) determineDesiredReplicas(rd v1alp
 	metrics := hra.Spec.Metrics
 	if len(metrics) == 0 {
 		if len(hra.Spec.ScaleUpTriggers) == 0 {
-			return r.calculateReplicasByQueuedAndInProgressWorkflowRuns(rd, hra)
+			return r.suggestReplicasByQueuedAndInProgressWorkflowRuns(rd, hra)
 		}
 
-		return hra.Spec.MinReplicas, nil
+		return nil, nil
 	} else if metrics[0].Type == v1alpha1.AutoscalingMetricTypeTotalNumberOfQueuedAndInProgressWorkflowRuns {
-		return r.calculateReplicasByQueuedAndInProgressWorkflowRuns(rd, hra)
+		return r.suggestReplicasByQueuedAndInProgressWorkflowRuns(rd, hra)
 	} else if metrics[0].Type == v1alpha1.AutoscalingMetricTypePercentageRunnersBusy {
-		return r.calculateReplicasByPercentageRunnersBusy(rd, hra)
+		return r.suggestReplicasByPercentageRunnersBusy(rd, hra)
 	} else {
 		return nil, fmt.Errorf("validting autoscaling metrics: unsupported metric type %q", metrics[0].Type)
 	}
 }
 
-func (r *HorizontalRunnerAutoscalerReconciler) calculateReplicasByQueuedAndInProgressWorkflowRuns(rd v1alpha1.RunnerDeployment, hra v1alpha1.HorizontalRunnerAutoscaler) (*int, error) {
+func (r *HorizontalRunnerAutoscalerReconciler) suggestReplicasByQueuedAndInProgressWorkflowRuns(rd v1alpha1.RunnerDeployment, hra v1alpha1.HorizontalRunnerAutoscaler) (*int, error) {
 
 	var repos [][]string
 	metrics := hra.Spec.Metrics
@@ -101,7 +101,7 @@ func (r *HorizontalRunnerAutoscalerReconciler) calculateReplicasByQueuedAndInPro
 		// we assume that the desired replicas should always be `minReplicas + capacityReservedThroughWebhook`.
 		// See https://github.com/summerwind/actions-runner-controller/issues/377#issuecomment-793372693
 		if len(metrics) == 0 {
-			return hra.Spec.MinReplicas, nil
+			return nil, nil
 		}
 
 		if len(metrics[0].RepositoryNames) == 0 {
@@ -178,28 +178,10 @@ func (r *HorizontalRunnerAutoscalerReconciler) calculateReplicasByQueuedAndInPro
 		}
 	}
 
-	minReplicas := *hra.Spec.MinReplicas
-	maxReplicas := *hra.Spec.MaxReplicas
 	necessaryReplicas := queued + inProgress
 
-	var desiredReplicas int
-
-	if necessaryReplicas < minReplicas {
-		desiredReplicas = minReplicas
-	} else if necessaryReplicas > maxReplicas {
-		desiredReplicas = maxReplicas
-	} else {
-		desiredReplicas = necessaryReplicas
-	}
-
-	rd.Status.Replicas = &desiredReplicas
-	replicas := desiredReplicas
-
 	r.Log.V(1).Info(
-		"Calculated desired replicas",
-		"computed_replicas_desired", desiredReplicas,
-		"spec_replicas_min", minReplicas,
-		"spec_replicas_max", maxReplicas,
+		fmt.Sprintf("Suggested desired replicas of %d by TotalNumberOfQueuedAndInProgressWorkflowRuns", necessaryReplicas),
 		"workflow_runs_completed", completed,
 		"workflow_runs_in_progress", inProgress,
 		"workflow_runs_queued", queued,
@@ -209,13 +191,11 @@ func (r *HorizontalRunnerAutoscalerReconciler) calculateReplicasByQueuedAndInPro
 		"horizontal_runner_autoscaler", hra.Name,
 	)
 
-	return &replicas, nil
+	return &necessaryReplicas, nil
 }
 
-func (r *HorizontalRunnerAutoscalerReconciler) calculateReplicasByPercentageRunnersBusy(rd v1alpha1.RunnerDeployment, hra v1alpha1.HorizontalRunnerAutoscaler) (*int, error) {
+func (r *HorizontalRunnerAutoscalerReconciler) suggestReplicasByPercentageRunnersBusy(rd v1alpha1.RunnerDeployment, hra v1alpha1.HorizontalRunnerAutoscaler) (*int, error) {
 	ctx := context.Background()
-	minReplicas := *hra.Spec.MinReplicas
-	maxReplicas := *hra.Spec.MaxReplicas
 	metrics := hra.Spec.Metrics[0]
 	scaleUpThreshold := defaultScaleUpThreshold
 	scaleDownThreshold := defaultScaleDownThreshold
@@ -363,21 +343,13 @@ func (r *HorizontalRunnerAutoscalerReconciler) calculateReplicasByPercentageRunn
 		desiredReplicas = *rd.Spec.Replicas
 	}
 
-	if desiredReplicas < minReplicas {
-		desiredReplicas = minReplicas
-	} else if desiredReplicas > maxReplicas {
-		desiredReplicas = maxReplicas
-	}
-
 	// NOTES for operators:
 	//
 	// - num_runners can be as twice as large as replicas_desired_before while
 	//   the runnerdeployment controller is replacing RunnerReplicaSet for runner update.
 
 	r.Log.V(1).Info(
-		"Calculated desired replicas",
-		"replicas_min", minReplicas,
-		"replicas_max", maxReplicas,
+		fmt.Sprintf("Suggested desired replicas of %d by PercentageRunnersBusy", desiredReplicas),
 		"replicas_desired_before", desiredReplicasBefore,
 		"replicas_desired", desiredReplicas,
 		"num_runners", numRunners,
@@ -391,8 +363,5 @@ func (r *HorizontalRunnerAutoscalerReconciler) calculateReplicasByPercentageRunn
 		"repository", repository,
 	)
 
-	rd.Status.Replicas = &desiredReplicas
-	replicas := desiredReplicas
-
-	return &replicas, nil
+	return &desiredReplicas, nil
 }

controllers/autoscaling_test.go

@@ -224,7 +224,7 @@ func TestDetermineDesiredReplicas_RepositoryRunner(t *testing.T) {
 				},
 			}
 
-			got, err := h.computeReplicas(rd, hra)
+			got, _, _, err := h.computeReplicasWithCache(log, metav1Now.Time, rd, hra)
 			if err != nil {
 				if tc.err == "" {
 					t.Fatalf("unexpected error: expected none, got %v", err)
@@ -234,12 +234,8 @@ func TestDetermineDesiredReplicas_RepositoryRunner(t *testing.T) {
 				return
 			}
 
-			if got == nil {
-				t.Fatalf("unexpected value of rs.Spec.Replicas: nil")
-			}
-
-			if *got != tc.want {
-				t.Errorf("%d: incorrect desired replicas: want %d, got %d", i, tc.want, *got)
+			if got != tc.want {
+				t.Errorf("%d: incorrect desired replicas: want %d, got %d", i, tc.want, got)
 			}
 		})
 	}
@@ -424,6 +420,8 @@ func TestDetermineDesiredReplicas_OrganizationalRunner(t *testing.T) {
 		_ = v1alpha1.AddToScheme(scheme)
 
 		t.Run(fmt.Sprintf("case %d", i), func(t *testing.T) {
+			t.Helper()
+
 			server := fake.NewServer(
 				fake.WithListRepositoryWorkflowRunsResponse(200, tc.workflowRuns, tc.workflowRuns_queued, tc.workflowRuns_in_progress),
 				fake.WithListWorkflowJobsResponse(200, tc.workflowJobs),
@@ -485,7 +483,7 @@ func TestDetermineDesiredReplicas_OrganizationalRunner(t *testing.T) {
 				},
 			}
 
-			got, err := h.computeReplicas(rd, hra)
+			got, _, _, err := h.computeReplicasWithCache(log, metav1Now.Time, rd, hra)
 			if err != nil {
 				if tc.err == "" {
 					t.Fatalf("unexpected error: expected none, got %v", err)
@@ -495,12 +493,8 @@ func TestDetermineDesiredReplicas_OrganizationalRunner(t *testing.T) {
 				return
 			}
 
-			if got == nil {
-				t.Fatalf("unexpected value of rs.Spec.Replicas: nil, wanted %v", tc.want)
-			}
-
-			if *got != tc.want {
-				t.Errorf("%d: incorrect desired replicas: want %d, got %d", i, tc.want, *got)
+			if got != tc.want {
+				t.Errorf("%d: incorrect desired replicas: want %d, got %d", i, tc.want, got)
 			}
 		})
 	}

controllers/horizontalrunnerautoscaler_controller.go

@@ -19,6 +19,7 @@ package controllers
 import (
 	"context"
 	"fmt"
+	corev1 "k8s.io/api/core/v1"
 	"time"
 
 	"github.com/summerwind/actions-runner-controller/github"
@@ -30,10 +31,10 @@ import (
 	ctrl "sigs.k8s.io/controller-runtime"
 	"sigs.k8s.io/controller-runtime/pkg/client"
 
-	corev1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
 	"github.com/summerwind/actions-runner-controller/api/v1alpha1"
+	"github.com/summerwind/actions-runner-controller/controllers/metrics"
 )
 
 const (
@@ -52,6 +53,8 @@ type HorizontalRunnerAutoscalerReconciler struct {
 	Name          string
 }
 
+const defaultReplicas = 1
+
 // +kubebuilder:rbac:groups=actions.summerwind.dev,resources=runnerdeployments,verbs=get;list;watch;update;patch
 // +kubebuilder:rbac:groups=actions.summerwind.dev,resources=horizontalrunnerautoscalers,verbs=get;list;watch;create;update;patch;delete
 // +kubebuilder:rbac:groups=actions.summerwind.dev,resources=horizontalrunnerautoscalers/finalizers,verbs=get;list;watch;create;update;patch;delete
@@ -71,6 +74,8 @@ func (r *HorizontalRunnerAutoscalerReconciler) Reconcile(req ctrl.Request) (ctrl
 		return ctrl.Result{}, nil
 	}
 
+	metrics.SetHorizontalRunnerAutoscalerSpec(hra.ObjectMeta, hra.Spec)
+
 	var rd v1alpha1.RunnerDeployment
 	if err := r.Get(ctx, types.NamespacedName{
 		Namespace: req.Namespace,
@@ -83,41 +88,18 @@ func (r *HorizontalRunnerAutoscalerReconciler) Reconcile(req ctrl.Request) (ctrl
 		return ctrl.Result{}, nil
 	}
 
-	var replicas *int
-
-	replicasFromCache := r.getDesiredReplicasFromCache(hra)
-
-	if replicasFromCache != nil {
-		replicas = replicasFromCache
-	} else {
-		var err error
-
-		replicas, err = r.computeReplicas(rd, hra)
-		if err != nil {
-			r.Recorder.Event(&hra, corev1.EventTypeNormal, "RunnerAutoscalingFailure", err.Error())
-
-			log.Error(err, "Could not compute replicas")
-
-			return ctrl.Result{}, err
-		}
-	}
-
-	const defaultReplicas = 1
-
-	currentDesiredReplicas := getIntOrDefault(rd.Spec.Replicas, defaultReplicas)
-	newDesiredReplicas := getIntOrDefault(replicas, defaultReplicas)
-
 	now := time.Now()
 
-	for _, reservation := range hra.Spec.CapacityReservations {
-		if reservation.ExpirationTime.Time.After(now) {
-			newDesiredReplicas += reservation.Replicas
-		}
+	newDesiredReplicas, computedReplicas, computedReplicasFromCache, err := r.computeReplicasWithCache(log, now, rd, hra)
+	if err != nil {
+		r.Recorder.Event(&hra, corev1.EventTypeNormal, "RunnerAutoscalingFailure", err.Error())
+
+		log.Error(err, "Could not compute replicas")
+
+		return ctrl.Result{}, err
 	}
 
-	if hra.Spec.MaxReplicas != nil && *hra.Spec.MaxReplicas < newDesiredReplicas {
-		newDesiredReplicas = *hra.Spec.MaxReplicas
-	}
+	currentDesiredReplicas := getIntOrDefault(rd.Spec.Replicas, defaultReplicas)
 
 	// Please add more conditions that we can in-place update the newest runnerreplicaset without disruption
 	if currentDesiredReplicas != newDesiredReplicas {
@@ -143,7 +125,7 @@ func (r *HorizontalRunnerAutoscalerReconciler) Reconcile(req ctrl.Request) (ctrl
 		updated.Status.DesiredReplicas = &newDesiredReplicas
 	}
 
-	if replicasFromCache == nil {
+	if computedReplicasFromCache == nil {
 		if updated == nil {
 			updated = hra.DeepCopy()
 		}
@@ -160,12 +142,14 @@ func (r *HorizontalRunnerAutoscalerReconciler) Reconcile(req ctrl.Request) (ctrl
 
 		updated.Status.CacheEntries = append(cacheEntries, v1alpha1.CacheEntry{
 			Key:            v1alpha1.CacheEntryKeyDesiredReplicas,
-			Value:          *replicas,
+			Value:          computedReplicas,
 			ExpirationTime: metav1.Time{Time: time.Now().Add(cacheDuration)},
 		})
 	}
 
 	if updated != nil {
+		metrics.SetHorizontalRunnerAutoscalerStatus(updated.ObjectMeta, updated.Status)
+
 		if err := r.Status().Patch(ctx, updated, client.MergeFrom(&hra)); err != nil {
 			return ctrl.Result{}, fmt.Errorf("patching horizontalrunnerautoscaler status to add cache entry: %w", err)
 		}
@@ -200,14 +184,59 @@ func (r *HorizontalRunnerAutoscalerReconciler) SetupWithManager(mgr ctrl.Manager
 		Complete(r)
 }
 
-func (r *HorizontalRunnerAutoscalerReconciler) computeReplicas(rd v1alpha1.RunnerDeployment, hra v1alpha1.HorizontalRunnerAutoscaler) (*int, error) {
-	var computedReplicas *int
-
-	replicas, err := r.determineDesiredReplicas(rd, hra)
-	if err != nil {
-		return nil, err
+func (r *HorizontalRunnerAutoscalerReconciler) computeReplicasWithCache(log logr.Logger, now time.Time, rd v1alpha1.RunnerDeployment, hra v1alpha1.HorizontalRunnerAutoscaler) (int, int, *int, error) {
+	minReplicas := defaultReplicas
+	if hra.Spec.MinReplicas != nil && *hra.Spec.MinReplicas > 0 {
+		minReplicas = *hra.Spec.MinReplicas
 	}
 
+	var suggestedReplicas int
+
+	suggestedReplicasFromCache := r.fetchSuggestedReplicasFromCache(hra)
+
+	var cached *int
+
+	if suggestedReplicasFromCache != nil {
+		cached = suggestedReplicasFromCache
+
+		if cached == nil {
+			suggestedReplicas = minReplicas
+		} else {
+			suggestedReplicas = *cached
+		}
+	} else {
+		v, err := r.suggestDesiredReplicas(rd, hra)
+		if err != nil {
+			return 0, 0, nil, err
+		}
+
+		if v == nil {
+			suggestedReplicas = minReplicas
+		} else {
+			suggestedReplicas = *v
+		}
+	}
+
+	var reserved int
+
+	for _, reservation := range hra.Spec.CapacityReservations {
+		if reservation.ExpirationTime.Time.After(now) {
+			reserved += reservation.Replicas
+		}
+	}
+
+	newDesiredReplicas := suggestedReplicas + reserved
+
+	if newDesiredReplicas < minReplicas {
+		newDesiredReplicas = minReplicas
+	} else if hra.Spec.MaxReplicas != nil && newDesiredReplicas > *hra.Spec.MaxReplicas {
+		newDesiredReplicas = *hra.Spec.MaxReplicas
+	}
+
+	//
+	// Delay scaling-down for ScaleDownDelaySecondsAfterScaleUp or DefaultScaleDownDelay
+	//
+
 	var scaleDownDelay time.Duration
 
 	if hra.Spec.ScaleDownDelaySecondsAfterScaleUp != nil {
@@ -216,17 +245,50 @@ func (r *HorizontalRunnerAutoscalerReconciler) computeReplicas(rd v1alpha1.Runne
 		scaleDownDelay = DefaultScaleDownDelay
 	}
 
-	now := time.Now()
+	var scaleDownDelayUntil *time.Time
 
 	if hra.Status.DesiredReplicas == nil ||
-		*hra.Status.DesiredReplicas < *replicas ||
-		hra.Status.LastSuccessfulScaleOutTime == nil ||
-		hra.Status.LastSuccessfulScaleOutTime.Add(scaleDownDelay).Before(now) {
+		*hra.Status.DesiredReplicas < newDesiredReplicas ||
+		hra.Status.LastSuccessfulScaleOutTime == nil {
 
-		computedReplicas = replicas
+	} else if hra.Status.LastSuccessfulScaleOutTime != nil {
+		t := hra.Status.LastSuccessfulScaleOutTime.Add(scaleDownDelay)
+
+		// ScaleDownDelay is not passed
+		if t.After(now) {
+			scaleDownDelayUntil = &t
+			newDesiredReplicas = *hra.Status.DesiredReplicas
+		}
 	} else {
-		computedReplicas = hra.Status.DesiredReplicas
+		newDesiredReplicas = *hra.Status.DesiredReplicas
 	}
 
-	return computedReplicas, nil
+	//
+	// Logs various numbers for monitoring and debugging purpose
+	//
+
+	kvs := []interface{}{
+		"suggested", suggestedReplicas,
+		"reserved", reserved,
+		"min", minReplicas,
+	}
+
+	if cached != nil {
+		kvs = append(kvs, "cached", *cached)
+	}
+
+	if scaleDownDelayUntil != nil {
+		kvs = append(kvs, "last_scale_up_time", *hra.Status.LastSuccessfulScaleOutTime)
+		kvs = append(kvs, "scale_down_delay_until", scaleDownDelayUntil)
+	}
+
+	if maxReplicas := hra.Spec.MaxReplicas; maxReplicas != nil {
+		kvs = append(kvs, "max", *maxReplicas)
+	}
+
+	log.V(1).Info(fmt.Sprintf("Calculated desired replicas of %d", newDesiredReplicas),
+		kvs...,
+	)
+
+	return newDesiredReplicas, suggestedReplicas, suggestedReplicasFromCache, nil
 }

controllers/integration_test.go

@@ -71,7 +71,9 @@ func SetupIntegrationTest(ctx context.Context) *testEnvironment {
 		err := k8sClient.Create(ctx, ns)
 		Expect(err).NotTo(HaveOccurred(), "failed to create test namespace")
 
-		mgr, err := ctrl.NewManager(cfg, ctrl.Options{})
+		mgr, err := ctrl.NewManager(cfg, ctrl.Options{
+			Namespace: ns.Name,
+		})
 		Expect(err).NotTo(HaveOccurred(), "failed to create manager")
 
 		responses := &fake.FixedResponses{}
@@ -97,6 +99,21 @@ func SetupIntegrationTest(ctx context.Context) *testEnvironment {
 			return fmt.Sprintf("%s%s", ns.Name, name)
 		}
 
+		runnerController := &RunnerReconciler{
+			Client:                      mgr.GetClient(),
+			Scheme:                      scheme.Scheme,
+			Log:                         logf.Log,
+			Recorder:                    mgr.GetEventRecorderFor("runnerreplicaset-controller"),
+			GitHubClient:                env.ghClient,
+			RunnerImage:                 "example/runner:test",
+			DockerImage:                 "example/docker:test",
+			Name:                        controllerName("runner"),
+			RegistrationRecheckInterval: time.Millisecond,
+			RegistrationRecheckJitter:   time.Millisecond,
+		}
+		err = runnerController.SetupWithManager(mgr)
+		Expect(err).NotTo(HaveOccurred(), "failed to setup runner controller")
+
 		replicasetController := &RunnerReplicaSetReconciler{
 			Client:       mgr.GetClient(),
 			Scheme:       scheme.Scheme,
@@ -106,7 +123,7 @@ func SetupIntegrationTest(ctx context.Context) *testEnvironment {
 			Name:         controllerName("runnerreplicaset"),
 		}
 		err = replicasetController.SetupWithManager(mgr)
-		Expect(err).NotTo(HaveOccurred(), "failed to setup controller")
+		Expect(err).NotTo(HaveOccurred(), "failed to setup runnerreplicaset controller")
 
 		deploymentsController := &RunnerDeploymentReconciler{
 			Client:   mgr.GetClient(),
@@ -116,7 +133,7 @@ func SetupIntegrationTest(ctx context.Context) *testEnvironment {
 			Name:     controllerName("runnnerdeployment"),
 		}
 		err = deploymentsController.SetupWithManager(mgr)
-		Expect(err).NotTo(HaveOccurred(), "failed to setup controller")
+		Expect(err).NotTo(HaveOccurred(), "failed to setup runnerdeployment controller")
 
 		autoscalerController := &HorizontalRunnerAutoscalerReconciler{
 			Client:        mgr.GetClient(),
@@ -128,7 +145,7 @@ func SetupIntegrationTest(ctx context.Context) *testEnvironment {
 			Name:          controllerName("horizontalrunnerautoscaler"),
 		}
 		err = autoscalerController.SetupWithManager(mgr)
-		Expect(err).NotTo(HaveOccurred(), "failed to setup controller")
+		Expect(err).NotTo(HaveOccurred(), "failed to setup autoscaler controller")
 
 		autoscalerWebhook := &HorizontalRunnerAutoscalerGitHubWebhook{
 			Client:    mgr.GetClient(),
@@ -475,10 +492,9 @@ var _ = Context("INTEGRATION: Inside of a new namespace", func() {
 
 				ExpectRunnerSetsCountEventuallyEquals(ctx, ns.Name, 1)
 				ExpectRunnerSetsManagedReplicasCountEventuallyEquals(ctx, ns.Name, 3)
-			}
-
-			{
 				env.ExpectRegisteredNumberCountEventuallyEquals(3, "count of fake list runners")
+				env.SyncRunnerRegistrations()
+				ExpectRunnerCountEventuallyEquals(ctx, ns.Name, 3)
 			}
 
 			// Scale-up to 4 replicas on first check_run create webhook event
@@ -486,19 +502,19 @@ var _ = Context("INTEGRATION: Inside of a new namespace", func() {
 				env.SendOrgCheckRunEvent("test", "valid", "pending", "created")
 				ExpectRunnerSetsCountEventuallyEquals(ctx, ns.Name, 1, "runner sets after webhook")
 				ExpectRunnerSetsManagedReplicasCountEventuallyEquals(ctx, ns.Name, 4, "runners after first webhook event")
-			}
-
-			{
 				env.ExpectRegisteredNumberCountEventuallyEquals(4, "count of fake list runners")
+				env.SyncRunnerRegistrations()
+				ExpectRunnerCountEventuallyEquals(ctx, ns.Name, 4)
 			}
 
 			// Scale-up to 5 replicas on second check_run create webhook event
 			{
 				env.SendOrgCheckRunEvent("test", "valid", "pending", "created")
 				ExpectRunnerSetsManagedReplicasCountEventuallyEquals(ctx, ns.Name, 5, "runners after second webhook event")
+				env.ExpectRegisteredNumberCountEventuallyEquals(5, "count of fake list runners")
+				env.SyncRunnerRegistrations()
+				ExpectRunnerCountEventuallyEquals(ctx, ns.Name, 5)
 			}
-
-			env.ExpectRegisteredNumberCountEventuallyEquals(5, "count of fake list runners")
 		})
 
 		It("should create and scale organization's repository runners only on check_run event", func() {
@@ -1228,6 +1244,44 @@ func ExpectRunnerSetsCountEventuallyEquals(ctx context.Context, ns string, count
 		time.Second*10, time.Millisecond*500).Should(BeEquivalentTo(count), optionalDescription...)
 }
 
+func ExpectRunnerCountEventuallyEquals(ctx context.Context, ns string, count int, optionalDescription ...interface{}) {
+	runners := actionsv1alpha1.RunnerList{Items: []actionsv1alpha1.Runner{}}
+
+	EventuallyWithOffset(
+		1,
+		func() int {
+			err := k8sClient.List(ctx, &runners, client.InNamespace(ns))
+			if err != nil {
+				logf.Log.Error(err, "list runner sets")
+			}
+
+			var running int
+
+			for _, r := range runners.Items {
+				if r.Status.Phase == string(corev1.PodRunning) {
+					running++
+				} else {
+					var pod corev1.Pod
+					if err := k8sClient.Get(ctx, types.NamespacedName{Namespace: ns, Name: r.Name}, &pod); err != nil {
+						logf.Log.Error(err, "simulating pod controller")
+						continue
+					}
+
+					copy := pod.DeepCopy()
+					copy.Status.Phase = corev1.PodRunning
+
+					if err := k8sClient.Status().Patch(ctx, copy, client.MergeFrom(&pod)); err != nil {
+						logf.Log.Error(err, "simulating pod controller")
+						continue
+					}
+				}
+			}
+
+			return running
+		},
+		time.Second*10, time.Millisecond*500).Should(BeEquivalentTo(count), optionalDescription...)
+}
+
 func ExpectRunnerSetsManagedReplicasCountEventuallyEquals(ctx context.Context, ns string, count int, optionalDescription ...interface{}) {
 	runnerSets := actionsv1alpha1.RunnerReplicaSetList{Items: []actionsv1alpha1.RunnerReplicaSet{}}
 

controllers/metrics/horizontalrunnerautoscaler.go

@@ -0,0 +1,67 @@
+package metrics
+
+import (
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/summerwind/actions-runner-controller/api/v1alpha1"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+)
+
+const (
+	hraName      = "horizontalrunnerautoscaler"
+	hraNamespace = "namespace"
+)
+
+var (
+	horizontalRunnerAutoscalerMetrics = []prometheus.Collector{
+		horizontalRunnerAutoscalerMinReplicas,
+		horizontalRunnerAutoscalerMaxReplicas,
+		horizontalRunnerAutoscalerDesiredReplicas,
+	}
+)
+
+var (
+	horizontalRunnerAutoscalerMinReplicas = prometheus.NewGaugeVec(
+		prometheus.GaugeOpts{
+			Name: "horizontalrunnerautoscaler_spec_min_replicas",
+			Help: "minReplicas of HorizontalRunnerAutoscaler",
+		},
+		[]string{hraName, hraNamespace},
+	)
+	horizontalRunnerAutoscalerMaxReplicas = prometheus.NewGaugeVec(
+		prometheus.GaugeOpts{
+			Name: "horizontalrunnerautoscaler_spec_max_replicas",
+			Help: "maxReplicas of HorizontalRunnerAutoscaler",
+		},
+		[]string{hraName, hraNamespace},
+	)
+	horizontalRunnerAutoscalerDesiredReplicas = prometheus.NewGaugeVec(
+		prometheus.GaugeOpts{
+			Name: "horizontalrunnerautoscaler_status_desired_replicas",
+			Help: "desiredReplicas of HorizontalRunnerAutoscaler",
+		},
+		[]string{hraName, hraNamespace},
+	)
+)
+
+func SetHorizontalRunnerAutoscalerSpec(o metav1.ObjectMeta, spec v1alpha1.HorizontalRunnerAutoscalerSpec) {
+	labels := prometheus.Labels{
+		hraName:      o.Name,
+		hraNamespace: o.Namespace,
+	}
+	if spec.MaxReplicas != nil {
+		horizontalRunnerAutoscalerMaxReplicas.With(labels).Set(float64(*spec.MaxReplicas))
+	}
+	if spec.MinReplicas != nil {
+		horizontalRunnerAutoscalerMinReplicas.With(labels).Set(float64(*spec.MinReplicas))
+	}
+}
+
+func SetHorizontalRunnerAutoscalerStatus(o metav1.ObjectMeta, status v1alpha1.HorizontalRunnerAutoscalerStatus) {
+	labels := prometheus.Labels{
+		hraName:      o.Name,
+		hraNamespace: o.Namespace,
+	}
+	if status.DesiredReplicas != nil {
+		horizontalRunnerAutoscalerDesiredReplicas.With(labels).Set(float64(*status.DesiredReplicas))
+	}
+}

controllers/metrics/metrics.go

@@ -0,0 +1,14 @@
+// Package metrics provides the metrics of custom resources such as HRA.
+//
+// This depends on the metrics exporter of kubebuilder.
+// See https://book.kubebuilder.io/reference/metrics.html for details.
+package metrics
+
+import (
+	"sigs.k8s.io/controller-runtime/pkg/metrics"
+)
+
+func init() {
+	metrics.Registry.MustRegister(runnerDeploymentMetrics...)
+	metrics.Registry.MustRegister(horizontalRunnerAutoscalerMetrics...)
+}

controllers/metrics/runnerdeployment.go

@@ -0,0 +1,37 @@
+package metrics
+
+import (
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/summerwind/actions-runner-controller/api/v1alpha1"
+)
+
+const (
+	rdName      = "runnerdeployment"
+	rdNamespace = "namespace"
+)
+
+var (
+	runnerDeploymentMetrics = []prometheus.Collector{
+		runnerDeploymentReplicas,
+	}
+)
+
+var (
+	runnerDeploymentReplicas = prometheus.NewGaugeVec(
+		prometheus.GaugeOpts{
+			Name: "runnerdeployment_spec_replicas",
+			Help: "replicas of RunnerDeployment",
+		},
+		[]string{rdName, rdNamespace},
+	)
+)
+
+func SetRunnerDeployment(rd v1alpha1.RunnerDeployment) {
+	labels := prometheus.Labels{
+		rdName:      rd.Name,
+		rdNamespace: rd.Namespace,
+	}
+	if rd.Spec.Replicas != nil {
+		runnerDeploymentReplicas.With(labels).Set(float64(*rd.Spec.Replicas))
+	}
+}

controllers/runner_controller.go

@@ -20,11 +20,12 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"strings"
+	"time"
+
 	gogithub "github.com/google/go-github/v33/github"
 	"github.com/summerwind/actions-runner-controller/hash"
 	"k8s.io/apimachinery/pkg/util/wait"
-	"strings"
-	"time"
 
 	"github.com/go-logr/logr"
 	kerrors "k8s.io/apimachinery/pkg/api/errors"
@@ -52,12 +53,15 @@ const (
 // RunnerReconciler reconciles a Runner object
 type RunnerReconciler struct {
 	client.Client
-	Log          logr.Logger
-	Recorder     record.EventRecorder
-	Scheme       *runtime.Scheme
-	GitHubClient *github.Client
-	RunnerImage  string
-	DockerImage  string
+	Log                         logr.Logger
+	Recorder                    record.EventRecorder
+	Scheme                      *runtime.Scheme
+	GitHubClient                *github.Client
+	RunnerImage                 string
+	DockerImage                 string
+	Name                        string
+	RegistrationRecheckInterval time.Duration
+	RegistrationRecheckJitter   time.Duration
 }
 
 // +kubebuilder:rbac:groups=actions.summerwind.dev,resources=runners,verbs=get;list;watch;create;update;patch;delete
@@ -164,9 +168,11 @@ func (r *RunnerReconciler) Reconcile(req ctrl.Request) (ctrl.Result, error) {
 				// Gracefully handle pod-already-exists errors due to informer cache delay.
 				// Without this we got a few errors like the below on new runner pod:
 				// 2021-03-16T00:23:10.116Z        ERROR   controller-runtime.controller   Reconciler error      {"controller": "runner-controller", "request": "default/example-runnerdeploy-b2g2g-j4mcp", "error": "pods \"example-runnerdeploy-b2g2g-j4mcp\" already exists"}
-				log.Info("Runner pod already exists. Probably this pod has been already created in previous reconcilation but the new pod is not yet cached.")
+				log.Info(
+					"Failed to create pod due to AlreadyExists error. Probably this pod has been already created in previous reconcilation but is still not in the informer cache. Will retry on pod created. If it doesn't repeat, there's no problem",
+				)
 
-				return ctrl.Result{RequeueAfter: 10 * time.Second}, nil
+				return ctrl.Result{}, nil
 			}
 
 			log.Error(err, "Failed to create pod resource")
@@ -184,7 +190,7 @@ func (r *RunnerReconciler) Reconcile(req ctrl.Request) (ctrl.Result, error) {
 
 			if deletionDidTimeout {
 				log.Info(
-					"Pod failed to delete itself in a timely manner. "+
+					fmt.Sprintf("Failed to delete pod within %s. ", deletionTimeout)+
 						"This is typically the case when a Kubernetes node became unreachable "+
 						"and the kube controller started evicting nodes. Forcefully deleting the pod to not get stuck.",
 					"podDeletionTimestamp", pod.DeletionTimestamp,
@@ -248,6 +254,9 @@ func (r *RunnerReconciler) Reconcile(req ctrl.Request) (ctrl.Result, error) {
 		// saving API calls and scary{ log messages
 		if !restart {
 			registrationCheckInterval := time.Minute
+			if r.RegistrationRecheckInterval > 0 {
+				registrationCheckInterval = r.RegistrationRecheckInterval
+			}
 
 			// We want to call ListRunners GitHub Actions API only once per runner per minute.
 			// This if block, in conjunction with:
@@ -255,15 +264,28 @@ func (r *RunnerReconciler) Reconcile(req ctrl.Request) (ctrl.Result, error) {
 			// achieves that.
 			if lastCheckTime := runner.Status.LastRegistrationCheckTime; lastCheckTime != nil {
 				nextCheckTime := lastCheckTime.Add(registrationCheckInterval)
-				if nextCheckTime.After(time.Now()) {
+				now := time.Now()
+
+				// Requeue scheduled by RequeueAfter can happen a bit earlier (like dozens of milliseconds)
+				// so to avoid excessive, in-effective retry, we heuristically ignore the remaining delay in case it is
+				// shorter than 1s
+				requeueAfter := nextCheckTime.Sub(now) - time.Second
+				if requeueAfter > 0 {
 					log.Info(
-						fmt.Sprintf("Skipping registration check because it's deferred until %s", nextCheckTime),
+						fmt.Sprintf("Skipped registration check because it's deferred until %s. Retrying in %s at latest", nextCheckTime, requeueAfter),
+						"lastRegistrationCheckTime", lastCheckTime,
+						"registrationCheckInterval", registrationCheckInterval,
 					)
 
-					// Note that we don't need to explicitly requeue on this reconcilation because
-					// the requeue should have been already scheduled previsouly
-					// (with `return ctrl.Result{RequeueAfter: registrationRecheckDelay}, nil` as noted above and coded below)
-					return ctrl.Result{}, nil
+					// Without RequeueAfter, the controller may not retry on scheduled. Instead, it must wait until the
+					// next sync period passes, which can be too much later than nextCheckTime.
+					//
+					// We need to requeue on this reconcilation even though we have already scheduled the initial
+					// requeue previously with `return ctrl.Result{RequeueAfter: registrationRecheckDelay}, nil`.
+					// Apparently, the workqueue used by controller-runtime seems to deduplicate and resets the delay on
+					// other requeues- so the initial scheduled requeue may have been reset due to requeue on
+					// spec/status change.
+					return ctrl.Result{RequeueAfter: requeueAfter}, nil
 				}
 			}
 
@@ -354,7 +376,12 @@ func (r *RunnerReconciler) Reconcile(req ctrl.Request) (ctrl.Result, error) {
 			}
 
 			if (notFound || offline) && !registrationDidTimeout {
-				registrationRecheckDelay = registrationCheckInterval + wait.Jitter(10*time.Second, 0.1)
+				registrationRecheckJitter := 10 * time.Second
+				if r.RegistrationRecheckJitter > 0 {
+					registrationRecheckJitter = r.RegistrationRecheckJitter
+				}
+
+				registrationRecheckDelay = registrationCheckInterval + wait.Jitter(registrationRecheckJitter, 0.1)
 			}
 		}
 
@@ -369,7 +396,7 @@ func (r *RunnerReconciler) Reconcile(req ctrl.Request) (ctrl.Result, error) {
 				updated.Status.LastRegistrationCheckTime = &metav1.Time{Time: time.Now()}
 
 				if err := r.Status().Patch(ctx, updated, client.MergeFrom(&runner)); err != nil {
-					log.Error(err, "Failed to update runner status")
+					log.Error(err, "Failed to update runner status for LastRegistrationCheckTime")
 					return ctrl.Result{}, err
 				}
 
@@ -391,7 +418,7 @@ func (r *RunnerReconciler) Reconcile(req ctrl.Request) (ctrl.Result, error) {
 				updated.Status.Message = pod.Status.Message
 
 				if err := r.Status().Patch(ctx, updated, client.MergeFrom(&runner)); err != nil {
-					log.Error(err, "Failed to update runner status")
+					log.Error(err, "Failed to update runner status for Phase/Reason/Message")
 					return ctrl.Result{}, err
 				}
 			}
@@ -463,8 +490,8 @@ func (r *RunnerReconciler) updateRegistrationToken(ctx context.Context, runner v
 		ExpiresAt:    metav1.NewTime(rt.GetExpiresAt().Time),
 	}
 
-	if err := r.Status().Update(ctx, updated); err != nil {
-		log.Error(err, "Failed to update runner status")
+	if err := r.Status().Patch(ctx, updated, client.MergeFrom(&runner)); err != nil {
+		log.Error(err, "Failed to update runner status for Registration")
 		return false, err
 	}
 
@@ -608,45 +635,63 @@ func (r *RunnerReconciler) newPod(runner v1alpha1.Runner) (corev1.Pod, error) {
 		}...)
 	}
 
-	if !dockerdInRunner && dockerEnabled {
-		runnerVolumeName := "runner"
-		runnerVolumeMountPath := "/runner"
+	//
+	// /runner must be generated on runtime from /runnertmp embedded in the container image.
+	//
+	// When you're NOT using dindWithinRunner=true,
+	// it must also be shared with the dind container as it seems like required to run docker steps.
+	//
 
-		pod.Spec.Volumes = []corev1.Volume{
-			{
+	runnerVolumeName := "runner"
+	runnerVolumeMountPath := "/runner"
+	runnerVolumeEmptyDir := &corev1.EmptyDirVolumeSource{}
+
+	if runner.Spec.VolumeSizeLimit != nil {
+		runnerVolumeEmptyDir.SizeLimit = runner.Spec.VolumeSizeLimit
+	}
+
+	pod.Spec.Volumes = append(pod.Spec.Volumes,
+		corev1.Volume{
+			Name: runnerVolumeName,
+			VolumeSource: corev1.VolumeSource{
+				EmptyDir: runnerVolumeEmptyDir,
+			},
+		},
+	)
+
+	pod.Spec.Containers[0].VolumeMounts = append(pod.Spec.Containers[0].VolumeMounts,
+		corev1.VolumeMount{
+			Name:      runnerVolumeName,
+			MountPath: runnerVolumeMountPath,
+		},
+	)
+
+	if !dockerdInRunner && dockerEnabled {
+		pod.Spec.Volumes = append(pod.Spec.Volumes,
+			corev1.Volume{
 				Name: "work",
 				VolumeSource: corev1.VolumeSource{
 					EmptyDir: &corev1.EmptyDirVolumeSource{},
 				},
 			},
-			{
-				Name: runnerVolumeName,
-				VolumeSource: corev1.VolumeSource{
-					EmptyDir: &corev1.EmptyDirVolumeSource{},
-				},
-			},
-			{
+			corev1.Volume{
 				Name: "certs-client",
 				VolumeSource: corev1.VolumeSource{
 					EmptyDir: &corev1.EmptyDirVolumeSource{},
 				},
 			},
-		}
-		pod.Spec.Containers[0].VolumeMounts = []corev1.VolumeMount{
-			{
+		)
+		pod.Spec.Containers[0].VolumeMounts = append(pod.Spec.Containers[0].VolumeMounts,
+			corev1.VolumeMount{
 				Name:      "work",
 				MountPath: workDir,
 			},
-			{
-				Name:      runnerVolumeName,
-				MountPath: runnerVolumeMountPath,
-			},
-			{
+			corev1.VolumeMount{
 				Name:      "certs-client",
 				MountPath: "/certs/client",
 				ReadOnly:  true,
 			},
-		}
+		)
 		pod.Spec.Containers[0].Env = append(pod.Spec.Containers[0].Env, []corev1.EnvVar{
 			{
 				Name:  "DOCKER_HOST",
@@ -661,23 +706,31 @@ func (r *RunnerReconciler) newPod(runner v1alpha1.Runner) (corev1.Pod, error) {
 				Value: "/certs/client",
 			},
 		}...)
-		pod.Spec.Containers = append(pod.Spec.Containers, corev1.Container{
-			Name:  "docker",
-			Image: r.DockerImage,
-			VolumeMounts: []corev1.VolumeMount{
-				{
-					Name:      "work",
-					MountPath: workDir,
-				},
-				{
-					Name:      runnerVolumeName,
-					MountPath: runnerVolumeMountPath,
-				},
-				{
-					Name:      "certs-client",
-					MountPath: "/certs/client",
-				},
+
+		// Determine the volume mounts assigned to the docker sidecar. In case extra mounts are included in the RunnerSpec, append them to the standard
+		// set of mounts. See https://github.com/summerwind/actions-runner-controller/issues/435 for context.
+		dockerVolumeMounts := []corev1.VolumeMount{
+			{
+				Name:      "work",
+				MountPath: workDir,
 			},
+			{
+				Name:      runnerVolumeName,
+				MountPath: runnerVolumeMountPath,
+			},
+			{
+				Name:      "certs-client",
+				MountPath: "/certs/client",
+			},
+		}
+		if extraDockerVolumeMounts := runner.Spec.DockerVolumeMounts; extraDockerVolumeMounts != nil {
+			dockerVolumeMounts = append(dockerVolumeMounts, extraDockerVolumeMounts...)
+		}
+
+		pod.Spec.Containers = append(pod.Spec.Containers, corev1.Container{
+			Name:         "docker",
+			Image:        r.DockerImage,
+			VolumeMounts: dockerVolumeMounts,
 			Env: []corev1.EnvVar{
 				{
 					Name:  "DOCKER_TLS_CERTDIR",
@@ -692,11 +745,17 @@ func (r *RunnerReconciler) newPod(runner v1alpha1.Runner) (corev1.Pod, error) {
 
 		if mtu := runner.Spec.DockerMTU; mtu != nil {
 			pod.Spec.Containers[1].Env = append(pod.Spec.Containers[1].Env, []corev1.EnvVar{
+				// See https://docs.docker.com/engine/security/rootless/
 				{
 					Name:  "DOCKERD_ROOTLESS_ROOTLESSKIT_MTU",
 					Value: fmt.Sprintf("%d", *runner.Spec.DockerMTU),
 				},
 			}...)
+
+			pod.Spec.Containers[1].Args = append(pod.Spec.Containers[1].Args,
+				"--mtu",
+				fmt.Sprintf("%d", *runner.Spec.DockerMTU),
+			)
 		}
 
 	}
@@ -759,6 +818,10 @@ func (r *RunnerReconciler) newPod(runner v1alpha1.Runner) (corev1.Pod, error) {
 		pod.Spec.TerminationGracePeriodSeconds = runner.Spec.TerminationGracePeriodSeconds
 	}
 
+	if len(runner.Spec.HostAliases) != 0 {
+		pod.Spec.HostAliases = runner.Spec.HostAliases
+	}
+
 	if err := ctrl.SetControllerReference(&runner, &pod, r.Scheme); err != nil {
 		return pod, err
 	}
@@ -768,6 +831,9 @@ func (r *RunnerReconciler) newPod(runner v1alpha1.Runner) (corev1.Pod, error) {
 
 func (r *RunnerReconciler) SetupWithManager(mgr ctrl.Manager) error {
 	name := "runner-controller"
+	if r.Name != "" {
+		name = r.Name
+	}
 
 	r.Recorder = mgr.GetEventRecorderFor(name)
 

controllers/runnerdeployment_controller.go

@@ -38,6 +38,7 @@ import (
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 
 	"github.com/summerwind/actions-runner-controller/api/v1alpha1"
+	"github.com/summerwind/actions-runner-controller/controllers/metrics"
 )
 
 const (
@@ -77,6 +78,8 @@ func (r *RunnerDeploymentReconciler) Reconcile(req ctrl.Request) (ctrl.Result, e
 		return ctrl.Result{}, nil
 	}
 
+	metrics.SetRunnerDeployment(rd)
+
 	var myRunnerReplicaSetList v1alpha1.RunnerReplicaSetList
 	if err := r.List(ctx, &myRunnerReplicaSetList, client.InNamespace(req.Namespace), client.MatchingFields{runnerSetOwnerKey: req.Name}); err != nil {
 		return ctrl.Result{}, err
@@ -189,17 +192,28 @@ func (r *RunnerDeploymentReconciler) Reconcile(req ctrl.Request) (ctrl.Result, e
 	if len(oldSets) > 0 {
 		readyReplicas := newestSet.Status.ReadyReplicas
 
-		if readyReplicas < currentDesiredReplicas {
-			log.WithValues("runnerreplicaset", types.NamespacedName{
+		oldSetsCount := len(oldSets)
+
+		logWithDebugInfo := log.WithValues(
+			"newest_runnerreplicaset", types.NamespacedName{
 				Namespace: newestSet.Namespace,
 				Name:      newestSet.Name,
-			}).
-				Info("Waiting until the newest runner replica set to be 100% available",
-					"ready", readyReplicas,
-					"desired", currentDesiredReplicas,
-				)
+			},
+			"newest_runnerreplicaset_replicas_ready", readyReplicas,
+			"newest_runnerreplicaset_replicas_desired", currentDesiredReplicas,
+			"old_runnerreplicasets_count", oldSetsCount,
+		)
 
-			return ctrl.Result{RequeueAfter: 10 * time.Second}, nil
+		if readyReplicas < currentDesiredReplicas {
+			logWithDebugInfo.
+				Info("Waiting until the newest runnerreplicaset to be 100% available")
+
+			return ctrl.Result{}, nil
+		}
+
+		if oldSetsCount > 0 {
+			logWithDebugInfo.
+				Info("The newest runnerreplicaset is 100% available. Deleting old runnerreplicasets")
 		}
 
 		for i := range oldSets {

controllers/runnerdeployment_controller_test.go

@@ -139,7 +139,9 @@ func SetupDeploymentTest(ctx context.Context) *corev1.Namespace {
 		err := k8sClient.Create(ctx, ns)
 		Expect(err).NotTo(HaveOccurred(), "failed to create test namespace")
 
-		mgr, err := ctrl.NewManager(cfg, ctrl.Options{})
+		mgr, err := ctrl.NewManager(cfg, ctrl.Options{
+			Namespace: ns.Name,
+		})
 		Expect(err).NotTo(HaveOccurred(), "failed to create manager")
 
 		controller := &RunnerDeploymentReconciler{
@@ -199,7 +201,7 @@ var _ = Context("Inside of a new namespace", func() {
 								},
 							},
 							Spec: actionsv1alpha1.RunnerSpec{
-								Repository: "foo/bar",
+								Repository: "test/valid",
 								Image:      "bar",
 								Env: []corev1.EnvVar{
 									{Name: "FOO", Value: "FOOVALUE"},
@@ -295,7 +297,7 @@ var _ = Context("Inside of a new namespace", func() {
 						Replicas: intPtr(1),
 						Template: actionsv1alpha1.RunnerTemplate{
 							Spec: actionsv1alpha1.RunnerSpec{
-								Repository: "foo/bar",
+								Repository: "test/valid",
 								Image:      "bar",
 								Env: []corev1.EnvVar{
 									{Name: "FOO", Value: "FOOVALUE"},
@@ -391,7 +393,7 @@ var _ = Context("Inside of a new namespace", func() {
 						Replicas: intPtr(1),
 						Template: actionsv1alpha1.RunnerTemplate{
 							Spec: actionsv1alpha1.RunnerSpec{
-								Repository: "foo/bar",
+								Repository: "test/valid",
 								Image:      "bar",
 								Env: []corev1.EnvVar{
 									{Name: "FOO", Value: "FOOVALUE"},

controllers/runnerreplicaset_controller.go

@@ -114,13 +114,14 @@ func (r *RunnerReplicaSetReconciler) Reconcile(req ctrl.Request) (ctrl.Result, e
 		desired = 1
 	}
 
-	log.V(0).Info("debug", "desired", desired, "available", available)
-
 	if available > desired {
 		n := available - desired
 
-		// get runners that are currently not busy
-		var notBusy []v1alpha1.Runner
+		log.V(0).Info(fmt.Sprintf("Deleting %d runners", n), "desired", desired, "available", available, "ready", ready)
+
+		// get runners that are currently offline/not busy/timed-out to register
+		var deletionCandidates []v1alpha1.Runner
+
 		for _, runner := range allRunners.Items {
 			busy, err := r.GitHubClient.IsRunnerBusy(ctx, runner.Spec.Enterprise, runner.Spec.Organization, runner.Spec.Repository, runner.Name)
 			if err != nil {
@@ -168,35 +169,37 @@ func (r *RunnerReplicaSetReconciler) Reconcile(req ctrl.Request) (ctrl.Result, e
 						"configuredRegistrationTimeout", registrationTimeout,
 					)
 
-					notBusy = append(notBusy, runner)
+					deletionCandidates = append(deletionCandidates, runner)
 				}
 
 				// offline runners should always be a great target for scale down
 				if offline {
-					notBusy = append(notBusy, runner)
+					deletionCandidates = append(deletionCandidates, runner)
 				}
 			} else if !busy {
-				notBusy = append(notBusy, runner)
+				deletionCandidates = append(deletionCandidates, runner)
 			}
 		}
 
-		if len(notBusy) < n {
-			n = len(notBusy)
+		if len(deletionCandidates) < n {
+			n = len(deletionCandidates)
 		}
 
 		for i := 0; i < n; i++ {
-			if err := r.Client.Delete(ctx, &notBusy[i]); client.IgnoreNotFound(err) != nil {
+			if err := r.Client.Delete(ctx, &deletionCandidates[i]); client.IgnoreNotFound(err) != nil {
 				log.Error(err, "Failed to delete runner resource")
 
 				return ctrl.Result{}, err
 			}
 
-			r.Recorder.Event(&rs, corev1.EventTypeNormal, "RunnerDeleted", fmt.Sprintf("Deleted runner '%s'", notBusy[i].Name))
-			log.Info("Deleted runner", "runnerreplicaset", rs.ObjectMeta.Name)
+			r.Recorder.Event(&rs, corev1.EventTypeNormal, "RunnerDeleted", fmt.Sprintf("Deleted runner '%s'", deletionCandidates[i].Name))
+			log.Info("Deleted runner")
 		}
 	} else if desired > available {
 		n := desired - available
 
+		log.V(0).Info(fmt.Sprintf("Creating %d runner(s)", n), "desired", desired, "available", available, "ready", ready)
+
 		for i := 0; i < n; i++ {
 			newRunner, err := r.newRunner(rs)
 			if err != nil {

controllers/runnerreplicaset_controller_test.go

@@ -47,7 +47,9 @@ func SetupTest(ctx context.Context) *corev1.Namespace {
 		err := k8sClient.Create(ctx, ns)
 		Expect(err).NotTo(HaveOccurred(), "failed to create test namespace")
 
-		mgr, err := ctrl.NewManager(cfg, ctrl.Options{})
+		mgr, err := ctrl.NewManager(cfg, ctrl.Options{
+			Namespace: ns.Name,
+		})
 		Expect(err).NotTo(HaveOccurred(), "failed to create manager")
 
 		runnersList = fake.NewRunnersList()
@@ -127,7 +129,7 @@ var _ = Context("Inside of a new namespace", func() {
 								},
 							},
 							Spec: actionsv1alpha1.RunnerSpec{
-								Repository: "foo/bar",
+								Repository: "test/valid",
 								Image:      "bar",
 								Env: []corev1.EnvVar{
 									{Name: "FOO", Value: "FOOVALUE"},

controllers/suite_test.go

@@ -55,9 +55,17 @@ func TestAPIs(t *testing.T) {
 var _ = BeforeSuite(func(done Done) {
 	logf.SetLogger(zap.LoggerTo(GinkgoWriter, true))
 
+	var apiServerFlags []string
+
+	apiServerFlags = append(apiServerFlags, envtest.DefaultKubeAPIServerFlags...)
+	// Avoids the following error:
+	// 2021-03-19T15:14:11.673+0900    ERROR   controller-runtime.controller   Reconciler error      {"controller": "testns-tvjzjrunner", "request": "testns-gdnyx/example-runnerdeploy-zps4z-j5562", "error": "Pod \"example-runnerdeploy-zps4z-j5562\" is invalid: [spec.containers[1].image: Required value, spec.containers[1].securityContext.privileged: Forbidden: disallowed by cluster policy]"}
+	apiServerFlags = append(apiServerFlags, "--allow-privileged=true")
+
 	By("bootstrapping test environment")
 	testEnv = &envtest.Environment{
-		CRDDirectoryPaths: []string{filepath.Join("..", "config", "crd", "bases")},
+		CRDDirectoryPaths:  []string{filepath.Join("..", "config", "crd", "bases")},
+		KubeAPIServerFlags: apiServerFlags,
 	}
 
 	var err error

main.go

@@ -41,8 +41,8 @@ const (
 )
 
 var (
-	scheme   = runtime.NewScheme()
-	setupLog = ctrl.Log.WithName("setup")
+	scheme = runtime.NewScheme()
+	log    = ctrl.Log.WithName("actions-runner-controller")
 )
 
 func init() {
@@ -109,13 +109,13 @@ func main() {
 		Namespace:          namespace,
 	})
 	if err != nil {
-		setupLog.Error(err, "unable to start manager")
+		log.Error(err, "unable to start manager")
 		os.Exit(1)
 	}
 
 	runnerReconciler := &controllers.RunnerReconciler{
 		Client:       mgr.GetClient(),
-		Log:          ctrl.Log.WithName("controllers").WithName("Runner"),
+		Log:          log.WithName("runner"),
 		Scheme:       mgr.GetScheme(),
 		GitHubClient: ghClient,
 		RunnerImage:  runnerImage,
@@ -123,64 +123,64 @@ func main() {
 	}
 
 	if err = runnerReconciler.SetupWithManager(mgr); err != nil {
-		setupLog.Error(err, "unable to create controller", "controller", "Runner")
+		log.Error(err, "unable to create controller", "controller", "Runner")
 		os.Exit(1)
 	}
 
 	runnerSetReconciler := &controllers.RunnerReplicaSetReconciler{
 		Client:       mgr.GetClient(),
-		Log:          ctrl.Log.WithName("controllers").WithName("RunnerReplicaSet"),
+		Log:          log.WithName("runnerreplicaset"),
 		Scheme:       mgr.GetScheme(),
 		GitHubClient: ghClient,
 	}
 
 	if err = runnerSetReconciler.SetupWithManager(mgr); err != nil {
-		setupLog.Error(err, "unable to create controller", "controller", "RunnerReplicaSet")
+		log.Error(err, "unable to create controller", "controller", "RunnerReplicaSet")
 		os.Exit(1)
 	}
 
 	runnerDeploymentReconciler := &controllers.RunnerDeploymentReconciler{
 		Client:             mgr.GetClient(),
-		Log:                ctrl.Log.WithName("controllers").WithName("RunnerDeployment"),
+		Log:                log.WithName("runnerdeployment"),
 		Scheme:             mgr.GetScheme(),
 		CommonRunnerLabels: commonRunnerLabels,
 	}
 
 	if err = runnerDeploymentReconciler.SetupWithManager(mgr); err != nil {
-		setupLog.Error(err, "unable to create controller", "controller", "RunnerDeployment")
+		log.Error(err, "unable to create controller", "controller", "RunnerDeployment")
 		os.Exit(1)
 	}
 
 	horizontalRunnerAutoscaler := &controllers.HorizontalRunnerAutoscalerReconciler{
 		Client:        mgr.GetClient(),
-		Log:           ctrl.Log.WithName("controllers").WithName("HorizontalRunnerAutoscaler"),
+		Log:           log.WithName("horizontalrunnerautoscaler"),
 		Scheme:        mgr.GetScheme(),
 		GitHubClient:  ghClient,
 		CacheDuration: syncPeriod - 10*time.Second,
 	}
 
 	if err = horizontalRunnerAutoscaler.SetupWithManager(mgr); err != nil {
-		setupLog.Error(err, "unable to create controller", "controller", "HorizontalRunnerAutoscaler")
+		log.Error(err, "unable to create controller", "controller", "HorizontalRunnerAutoscaler")
 		os.Exit(1)
 	}
 
 	if err = (&actionsv1alpha1.Runner{}).SetupWebhookWithManager(mgr); err != nil {
-		setupLog.Error(err, "unable to create webhook", "webhook", "Runner")
+		log.Error(err, "unable to create webhook", "webhook", "Runner")
 		os.Exit(1)
 	}
 	if err = (&actionsv1alpha1.RunnerDeployment{}).SetupWebhookWithManager(mgr); err != nil {
-		setupLog.Error(err, "unable to create webhook", "webhook", "RunnerDeployment")
+		log.Error(err, "unable to create webhook", "webhook", "RunnerDeployment")
 		os.Exit(1)
 	}
 	if err = (&actionsv1alpha1.RunnerReplicaSet{}).SetupWebhookWithManager(mgr); err != nil {
-		setupLog.Error(err, "unable to create webhook", "webhook", "RunnerReplicaSet")
+		log.Error(err, "unable to create webhook", "webhook", "RunnerReplicaSet")
 		os.Exit(1)
 	}
 	// +kubebuilder:scaffold:builder
 
-	setupLog.Info("starting manager")
+	log.Info("starting manager")
 	if err := mgr.Start(ctrl.SetupSignalHandler()); err != nil {
-		setupLog.Error(err, "problem running manager")
+		log.Error(err, "problem running manager")
 		os.Exit(1)
 	}
 }

pkg/actionsglob/actionsglob.go

@@ -65,7 +65,7 @@ func Match(pat string, s string) bool {
 
 		s = subs[1]
 
-		wildcardInHead = false
+		wildcardInHead = wildcardInTail
 	}
 
 	r := s == ""

pkg/actionsglob/match_test.go

@@ -195,4 +195,20 @@ func TestMatch(t *testing.T) {
 			Want:    false,
 		})
 	})
+
+	t.Run("actions-*-metrics == actions-workflow-metrics", func(t *testing.T) {
+		run(t, testcase{
+			Pattern: "actions-*-metrics",
+			Target:  "actions-workflow-metrics",
+			Want:    true,
+		})
+	})
+
+	t.Run("!actions-*-metrics == actions-workflow-metrics", func(t *testing.T) {
+		run(t, testcase{
+			Pattern: "!actions-*-metrics",
+			Target:  "actions-workflow-metrics",
+			Want:    false,
+		})
+	})
 }

runner/Dockerfile

@@ -1,4 +1,4 @@
-FROM ubuntu:18.04
+FROM ubuntu:20.04
 
 ARG TARGETPLATFORM
 ARG RUNNER_VERSION=2.274.2
@@ -8,37 +8,37 @@ RUN test -n "$TARGETPLATFORM" || (echo "TARGETPLATFORM must be set" && false)
 
 ENV DEBIAN_FRONTEND=noninteractive
 RUN apt update -y \
-  && apt install -y software-properties-common \
-  && add-apt-repository -y ppa:git-core/ppa \
-  && apt update -y \
-  && apt install -y --no-install-recommends \
-  build-essential \
-  curl \
-  ca-certificates \
-  dnsutils \
-  ftp \
-  git \
-  iproute2 \
-  iputils-ping \
-  jq \
-  libunwind8 \
-  locales \
-  netcat \
-  openssh-client \
-  parallel \
-  rsync \
-  shellcheck \
-  sudo \
-  telnet \
-  time \
-  tzdata \
-  unzip \
-  upx \
-  wget \
-  zip \
-  zstd \
-  && cd /usr/bin && ln -sf python3 python \
-  && rm -rf /var/lib/apt/lists/*
+    && apt install -y software-properties-common \
+    && add-apt-repository -y ppa:git-core/ppa \
+    && apt update -y \
+    && apt install -y --no-install-recommends \
+    build-essential \
+    curl \
+    ca-certificates \
+    dnsutils \
+    ftp \
+    git \
+    iproute2 \
+    iputils-ping \
+    jq \
+    libunwind8 \
+    locales \
+    netcat \
+    openssh-client \
+    parallel \
+    rsync \
+    shellcheck \
+    sudo \
+    telnet \
+    time \
+    tzdata \
+    unzip \
+    upx \
+    wget \
+    zip \
+    zstd \
+    python-is-python3 \
+    && rm -rf /var/lib/apt/lists/*
 
 RUN export ARCH=$(echo ${TARGETPLATFORM} | cut -d / -f2) \
   && curl -L -o /usr/local/bin/dumb-init https://github.com/Yelp/dumb-init/releases/download/v1.2.2/dumb-init_1.2.2_${ARCH} \
@@ -46,18 +46,18 @@ RUN export ARCH=$(echo ${TARGETPLATFORM} | cut -d / -f2) \
 
 # Docker download supports arm64 as aarch64 & amd64 as x86_64
 RUN set -vx; \
-  export ARCH=$(echo ${TARGETPLATFORM} | cut -d / -f2) \
-  && if [ "$ARCH" = "arm64" ]; then export ARCH=aarch64 ; fi \
-  && if [ "$ARCH" = "amd64" ]; then export ARCH=x86_64 ; fi \
-  && curl -L -o docker.tgz https://download.docker.com/linux/static/stable/${ARCH}/docker-${DOCKER_VERSION}.tgz \
-  && tar zxvf docker.tgz \
-  && install -o root -g root -m 755 docker/docker /usr/local/bin/docker \
-  && rm -rf docker docker.tgz \
-  && adduser --disabled-password --gecos "" --uid 1000 runner \
-  && groupadd docker \
-  && usermod -aG sudo runner \
-  && usermod -aG docker runner \
-  && echo "%sudo   ALL=(ALL:ALL) NOPASSWD:ALL" > /etc/sudoers
+    export ARCH=$(echo ${TARGETPLATFORM} | cut -d / -f2) \
+    && if [ "$ARCH" = "arm64" ]; then export ARCH=aarch64 ; fi \
+    && if [ "$ARCH" = "amd64" ]; then export ARCH=x86_64 ; fi \
+    && curl -L -o docker.tgz https://download.docker.com/linux/static/stable/${ARCH}/docker-${DOCKER_VERSION}.tgz \
+    && tar zxvf docker.tgz \
+    && install -o root -g root -m 755 docker/docker /usr/local/bin/docker \
+    && rm -rf docker docker.tgz \
+    && adduser --disabled-password --gecos "" --uid 1000 runner \
+    && groupadd docker \
+    && usermod -aG sudo runner \
+    && usermod -aG docker runner \
+    && echo "%sudo   ALL=(ALL:ALL) NOPASSWD:ALL" > /etc/sudoers
 
 ENV RUNNER_ASSETS_DIR=/runnertmp
 
@@ -67,21 +67,21 @@ ENV RUNNER_ASSETS_DIR=/runnertmp
 # It is installed after installdependencies.sh and before removing /var/lib/apt/lists
 # to avoid rerunning apt-update on its own.
 RUN export ARCH=$(echo ${TARGETPLATFORM} | cut -d / -f2) \
-  && if [ "$ARCH" = "amd64" ]; then export ARCH=x64 ; fi \
-  && mkdir -p "$RUNNER_ASSETS_DIR" \
-  && cd "$RUNNER_ASSETS_DIR" \
-  && curl -L -o runner.tar.gz https://github.com/actions/runner/releases/download/v${RUNNER_VERSION}/actions-runner-linux-${ARCH}-${RUNNER_VERSION}.tar.gz \
-  && tar xzf ./runner.tar.gz \
-  && rm runner.tar.gz \
-  && ./bin/installdependencies.sh \
-  && mv ./externals ./externalstmp \
-  && apt-get install -y libyaml-dev \
-  && rm -rf /var/lib/apt/lists/*
+    && if [ "$ARCH" = "amd64" ]; then export ARCH=x64 ; fi \
+    && mkdir -p "$RUNNER_ASSETS_DIR" \
+    && cd "$RUNNER_ASSETS_DIR" \
+    && curl -L -o runner.tar.gz https://github.com/actions/runner/releases/download/v${RUNNER_VERSION}/actions-runner-linux-${ARCH}-${RUNNER_VERSION}.tar.gz \
+    && tar xzf ./runner.tar.gz \
+    && rm runner.tar.gz \
+    && ./bin/installdependencies.sh \
+    && mv ./externals ./externalstmp \
+    && apt-get install -y libyaml-dev \
+    && rm -rf /var/lib/apt/lists/*
 
 RUN echo AGENT_TOOLSDIRECTORY=/opt/hostedtoolcache > .env \
-  && mkdir /opt/hostedtoolcache \
-  && chgrp docker /opt/hostedtoolcache \
-  && chmod g+rwx /opt/hostedtoolcache
+    && mkdir /opt/hostedtoolcache \
+    && chgrp docker /opt/hostedtoolcache \
+    && chmod g+rwx /opt/hostedtoolcache
 
 COPY entrypoint.sh /
 COPY --chown=runner:docker patched $RUNNER_ASSETS_DIR/patched

runner/Dockerfile.dindrunner

@@ -1,11 +1,12 @@
 FROM ubuntu:20.04
 
 ENV DEBIAN_FRONTEND=noninteractive
-# Dev + DinD dependencies
-RUN apt update \
+RUN apt update -y \
     && apt install -y software-properties-common \
     && add-apt-repository -y ppa:git-core/ppa \
-    && apt install -y \
+    && apt update -y \
+    && apt install -y --no-install-recommends \
+    software-properties-common \
     build-essential \
     curl \
     ca-certificates \
@@ -13,7 +14,6 @@ RUN apt update \
     ftp \
     git \
     iproute2 \
-    iptables \
     iputils-ping \
     jq \
     libunwind8 \
@@ -21,11 +21,9 @@ RUN apt update \
     netcat \
     openssh-client \
     parallel \
-    python-is-python3 \
     rsync \
     shellcheck \
     sudo \
-    supervisor \
     telnet \
     time \
     tzdata \
@@ -34,6 +32,9 @@ RUN apt update \
     wget \
     zip \
     zstd \
+    python-is-python3 \
+    iptables \
+    supervisor \
     && rm -rf /var/lib/apt/list/*
 
 # Runner user
@@ -79,7 +80,7 @@ ENV RUNNER_ASSETS_DIR=/runnertmp
 RUN export ARCH=$(echo ${TARGETPLATFORM} | cut -d / -f2) \
     && if [ "$ARCH" = "amd64" ]; then export ARCH=x64 ; fi \
     && mkdir -p "$RUNNER_ASSETS_DIR" \
-     && cd "$RUNNER_ASSETS_DIR" \
+    && cd "$RUNNER_ASSETS_DIR" \
     && curl -L -o runner.tar.gz https://github.com/actions/runner/releases/download/v${RUNNER_VERSION}/actions-runner-linux-${ARCH}-${RUNNER_VERSION}.tar.gz \
     && tar xzf ./runner.tar.gz \
     && rm runner.tar.gz \
@@ -88,9 +89,9 @@ RUN export ARCH=$(echo ${TARGETPLATFORM} | cut -d / -f2) \
     && rm -rf /var/lib/apt/lists/*
 
 RUN echo AGENT_TOOLSDIRECTORY=/opt/hostedtoolcache > /runner.env \
-  && mkdir /opt/hostedtoolcache \
-  && chgrp docker /opt/hostedtoolcache \
-  && chmod g+rwx /opt/hostedtoolcache
+    && mkdir /opt/hostedtoolcache \
+    && chgrp docker /opt/hostedtoolcache \
+    && chmod g+rwx /opt/hostedtoolcache
 
 COPY modprobe startup.sh /usr/local/bin/
 COPY supervisor/ /etc/supervisor/conf.d/

runner/Dockerfile.ubuntu.1804

@@ -0,0 +1,91 @@
+FROM ubuntu:18.04
+
+ARG TARGETPLATFORM
+ARG RUNNER_VERSION=2.274.2
+ARG DOCKER_VERSION=19.03.12
+
+RUN test -n "$TARGETPLATFORM" || (echo "TARGETPLATFORM must be set" && false)
+
+ENV DEBIAN_FRONTEND=noninteractive
+RUN apt update -y \
+    && apt install -y software-properties-common \
+    && add-apt-repository -y ppa:git-core/ppa \
+    && apt update -y \
+    && apt install -y --no-install-recommends \
+    build-essential \
+    curl \
+    ca-certificates \
+    dnsutils \
+    ftp \
+    git \
+    iproute2 \
+    iputils-ping \
+    jq \
+    libunwind8 \
+    locales \
+    netcat \
+    openssh-client \
+    parallel \
+    rsync \
+    shellcheck \
+    sudo \
+    telnet \
+    time \
+    tzdata \
+    unzip \
+    upx \
+    wget \
+    zip \
+    zstd \
+    && cd /usr/bin && ln -sf python3 python \
+    && rm -rf /var/lib/apt/lists/*
+
+RUN export ARCH=$(echo ${TARGETPLATFORM} | cut -d / -f2) \
+    && curl -L -o /usr/local/bin/dumb-init https://github.com/Yelp/dumb-init/releases/download/v1.2.2/dumb-init_1.2.2_${ARCH} \
+    && chmod +x /usr/local/bin/dumb-init
+
+# Docker download supports arm64 as aarch64 & amd64 as x86_64
+RUN set -vx; \
+    export ARCH=$(echo ${TARGETPLATFORM} | cut -d / -f2) \
+    && if [ "$ARCH" = "arm64" ]; then export ARCH=aarch64 ; fi \
+    && if [ "$ARCH" = "amd64" ]; then export ARCH=x86_64 ; fi \
+    && curl -L -o docker.tgz https://download.docker.com/linux/static/stable/${ARCH}/docker-${DOCKER_VERSION}.tgz \
+    && tar zxvf docker.tgz \
+    && install -o root -g root -m 755 docker/docker /usr/local/bin/docker \
+    && rm -rf docker docker.tgz \
+    && adduser --disabled-password --gecos "" --uid 1000 runner \
+    && groupadd docker \
+    && usermod -aG sudo runner \
+    && usermod -aG docker runner \
+    && echo "%sudo   ALL=(ALL:ALL) NOPASSWD:ALL" > /etc/sudoers
+
+ENV RUNNER_ASSETS_DIR=/runnertmp
+
+# Runner download supports amd64 as x64. Externalstmp is needed for making mount points work inside DinD.
+#
+# libyaml-dev is required for ruby/setup-ruby action.
+# It is installed after installdependencies.sh and before removing /var/lib/apt/lists
+# to avoid rerunning apt-update on its own.
+RUN export ARCH=$(echo ${TARGETPLATFORM} | cut -d / -f2) \
+    && if [ "$ARCH" = "amd64" ]; then export ARCH=x64 ; fi \
+    && mkdir -p "$RUNNER_ASSETS_DIR" \
+    && cd "$RUNNER_ASSETS_DIR" \
+    && curl -L -o runner.tar.gz https://github.com/actions/runner/releases/download/v${RUNNER_VERSION}/actions-runner-linux-${ARCH}-${RUNNER_VERSION}.tar.gz \
+    && tar xzf ./runner.tar.gz \
+    && rm runner.tar.gz \
+    && ./bin/installdependencies.sh \
+    && mv ./externals ./externalstmp \
+    && apt-get install -y libyaml-dev \
+    && rm -rf /var/lib/apt/lists/*
+
+RUN echo AGENT_TOOLSDIRECTORY=/opt/hostedtoolcache > .env \
+    && mkdir /opt/hostedtoolcache \
+    && chgrp docker /opt/hostedtoolcache \
+    && chmod g+rwx /opt/hostedtoolcache
+
+COPY entrypoint.sh /
+COPY --chown=runner:docker patched $RUNNER_ASSETS_DIR/patched
+
+USER runner
+ENTRYPOINT ["/usr/local/bin/dumb-init", "--"]
+CMD ["/entrypoint.sh"]

runner/Makefile

@@ -2,7 +2,7 @@ NAME ?= summerwind/actions-runner
 DIND_RUNNER_NAME ?= ${NAME}-dind
 TAG ?= latest
 
-RUNNER_VERSION ?= 2.274.2
+RUNNER_VERSION ?= 2.277.1
 DOCKER_VERSION ?= 19.03.12
 
 # default list of platforms for which multiarch image is built
@@ -22,16 +22,15 @@ else
 	export PUSH_ARG="--push"
 endif
 
-docker-build:
+docker-build-ubuntu:
 	docker build --build-arg TARGETPLATFORM=amd64 --build-arg RUNNER_VERSION=${RUNNER_VERSION} --build-arg DOCKER_VERSION=${DOCKER_VERSION} -t ${NAME}:${TAG} .
-	docker build --build-arg TARGETPLATFORM=amd64 --build-arg RUNNER_VERSION=${RUNNER_VERSION} --build-arg DOCKER_VERSION=${DOCKER_VERSION} -t ${DIND_RUNNER_NAME}:${TAG} -f dindrunner.Dockerfile .
+	docker build --build-arg TARGETPLATFORM=amd64 --build-arg RUNNER_VERSION=${RUNNER_VERSION} --build-arg DOCKER_VERSION=${DOCKER_VERSION} -t ${DIND_RUNNER_NAME}:${TAG} -f Dockerfile.dindrunner .
 
-
-docker-push:
+docker-push-ubuntu:
 	docker push ${NAME}:${TAG}
 	docker push ${DIND_RUNNER_NAME}:${TAG}
 
-docker-buildx:
+docker-buildx-ubuntu:
 	export DOCKER_CLI_EXPERIMENTAL=enabled
 	@if ! docker buildx ls | grep -q container-builder; then\
 		docker buildx create --platform ${PLATFORMS} --name container-builder --use;\
@@ -46,5 +45,5 @@ docker-buildx:
 		--build-arg RUNNER_VERSION=${RUNNER_VERSION} \
 		--build-arg DOCKER_VERSION=${DOCKER_VERSION} \
 		-t "${DIND_RUNNER_NAME}:latest" \
-		-f dindrunner.Dockerfile \
+		-f Dockerfile.dindrunner \
 		. ${PUSH_ARG}

runner/entrypoint.sh

@@ -29,21 +29,13 @@ else
   exit 1
 fi
 
-if [ -n "${RUNNER_WORKDIR}" ]; then
-  WORKDIR_ARG="--work ${RUNNER_WORKDIR}"
-fi
-
-if [ -n "${RUNNER_LABELS}" ]; then
-  LABEL_ARG="--labels ${RUNNER_LABELS}"
-fi
-
 if [ -z "${RUNNER_TOKEN}" ]; then
   echo "RUNNER_TOKEN must be set" 1>&2
   exit 1
 fi
 
 if [ -z "${RUNNER_REPO}" ] && [ -n "${RUNNER_GROUP}" ];then
-  RUNNER_GROUP_ARG="--runnergroup ${RUNNER_GROUP}"
+  RUNNER_GROUPS=${RUNNER_GROUP}
 fi
 
 # Hack due to https://github.com/summerwind/actions-runner-controller/issues/252#issuecomment-758338483
@@ -56,7 +48,14 @@ sudo chown -R runner:docker /runner
 mv /runnertmp/* /runner/
 
 cd /runner
-./config.sh --unattended --replace --name "${RUNNER_NAME}" --url "${GITHUB_URL}${ATTACH}" --token "${RUNNER_TOKEN}" ${RUNNER_GROUP_ARG} ${LABEL_ARG} ${WORKDIR_ARG}
+./config.sh --unattended --replace \
+  --name "${RUNNER_NAME}" \
+  --url "${GITHUB_URL}${ATTACH}" \
+  --token "${RUNNER_TOKEN}" \
+  --runnergroup "${RUNNER_GROUPS}" \
+  --labels "${RUNNER_LABELS}" \
+  --work "${RUNNER_WORKDIR}"
+
 mkdir ./externals
 # Hack due to the DinD volumes
 mv ./externalstmp/* ./externals/

runner/startup.sh

@@ -17,6 +17,34 @@ function wait_for_process () {
     return 0
 }
 
+sudo /bin/bash <<SCRIPT
+mkdir -p /etc/docker
+
+cat <<EOS > /etc/docker/daemon.json
+{
+EOS
+
+if [ -n "${MTU}" ]; then
+cat <<EOS >> /etc/docker/daemon.json
+  "mtu": ${MTU}
+EOS
+# See https://docs.docker.com/engine/security/rootless/
+echo "environment=DOCKERD_ROOTLESS_ROOTLESSKIT_MTU=${MTU}" >> /etc/supervisor/conf.d/dockerd.conf
+fi
+
+cat <<EOS >> /etc/docker/daemon.json
+}
+EOS
+SCRIPT
+
+INFO "Using /etc/docker/daemon.json with the following content"
+
+cat /etc/docker/daemon.json
+
+INFO "Using /etc/supervisor/conf.d/dockerd.conf with the following content"
+
+cat /etc/supervisor/conf.d/dockerd.conf
+
 INFO "Starting supervisor"
 sudo /usr/bin/supervisord -n >> /dev/null 2>&1 &
 
@@ -27,6 +55,8 @@ for process in "${processes[@]}"; do
     wait_for_process "$process"
     if [ $? -ne 0 ]; then
         ERROR "$process is not running after max time"
+        ERROR "Dumping /var/log/dockerd.err.log to help investigation"
+        cat /var/log/dockerd.err.log
         exit 1
     else 
         INFO "$process is running"