* the reconciliation loop is often much faster than the runner startup,
so changing runner not found related messages to debug and also add the
possibility that the runner just needs more time
* as pointed out in #281 the currently used image for the
kube-rbac-proxy - gcr.io/kubebuilder/kube-rbac-proxy:v0.4.1" - does not
have an ARM64 image
* hence, trying to use the standard deployment manifest / helm char will
fail on ARM64 systems
* replaced image with quay.io/brancz/kube-rbac-proxy:v0.8.0 which is the
latest version from the upstream maintainer
(https://github.com/brancz/kube-rbac-proxy/blob/master/Makefile#L13)
* successfully tested on both AMD64 and ARM64 clusters
* fixes#281
* errors.Is compares all members of a struct to return true which never
happened
* switched to type check instead of exact value check
* notRegistered was using double negation in if statement which lead to
unregistering runners after the registration timeout
* ... otherwise it will take 40 seconds (until a node is detected as unreachable) + 5 minutes (until pods are evicted from unreachable/crashed nodes)
* pods stuck in "Terminating" status on unreachable nodes will only be freed once #307 gets merged
* if a k8s node becomes unresponsive, the kube controller will soft
delete all pods after the eviction time (default 5 mins)
* as long as the node stays unresponsive, the pod will never leave the
last status and hence the runner controller will assume that everything
is fine with the pod and will not try to create new pods
* this can result in a situation where a horizontal autoscaler thinks
that none of its runners are currently busy and will not schedule any
further runners / pods, resulting in a broken runner deployment until the
runnerreplicaset is deleted or the node comes back online
* introducing a pod deletion timeout (1 minute) after which the runner
controller will try to reboot the runner and create a pod on a working
node
* use forceful deletion and requeue for pods that have been stuck for
more than one minute in terminating state
* gracefully handling race conditions if pod gets finally forcefully deleted within
This enhances the controller to recreate the runner pod if the corresponding runner has failed to register itself to GitHub within 10 minutes(currently hard-coded).
It should alleviate #288 in case the root cause is some kind of transient failures(network unreliability, GitHub down, temporarly compute resource shortage, etc).
Formerly you had to manually detect and delete such pods or even force-delete corresponding runners to unblock the controller.
Since this enhancement, the controller does the pod deletion automatically after 10 minutes after pod creation, which result in the controller create another pod that might work.
Ref #288
When we used `QueuedAndInProgressWorkflowRuns`-based autoscaling, it only fetched and considered only the first 30 workflow runs at the reconcilation time. This may have resulted in unreliable scaling behaviour, like scale-in/out not happening when it was expected.
* feat: HorizontalRunnerAutoscaler Webhook server
This introduces a Webhook server that responds GitHub `check_run`, `pull_request`, and `push` events by scaling up matched HorizontalRunnerAutoscaler by 1 replica. This allows you to immediately add "resource slack" for future GitHub Actions job runs, without waiting next sync period to add insufficient runners.
This feature is highly inspired by https://github.com/philips-labs/terraform-aws-github-runner. terraform-aws-github-runner can manage one set of runners per deployment, where actions-runner-controller with this feature can manage as many sets of runners as you declare with HorizontalRunnerAutoscaler and RunnerDeployment pairs.
On each GitHub event received, the webhook server queries repository-wide and organizational runners from the cluster and searches for the single target to scale up. The webhook server tries to match HorizontalRunnerAutoscaler.Spec.ScaleUpTriggers[].GitHubEvent.[CheckRun|Push|PullRequest] against the event and if it finds only one HRA, it is the scale target. If none or two or more targets are found for repository-wide runners, it does the same on organizational runners.
Changes:
* Fix integration test
* Update manifests
* chart: Add support for github webhook server
* dockerfile: Include github-webhook-server binary
* Do not import unversioned go-github
* Update README
* bug-fix: patched dir owned by runner
* always build with latest runner version
* Revert "always build with latest runner version"
This reverts commit e719724ae9fe92a12d4a087185cf2a2ff543a0dd.
* Also patch dindrunner.Dockerfile
Co-authored-by: Yusuke Kuoka <ykuoka@gmail.com>
* Added GITHUB.RUN_NUMBER to DockerHub push
* switch run_number to sha on docker tag
* re-add mutable tags for backwards compatability
* truncate to short SHA (7 chars)
* behaviour workaround
* use ENV to define sha_short
* use ::set-output to define sha_short
* bump action
* feat/helm: Bump appVersion to 0.6.1 release
* Also bump chart version to trigger a new chart release
Co-authored-by: Yusuke Kuoka <c-ykuoka@zlab.co.jp>
* Add chart workflows (#1)
* Add chart workflows
* Fix publishing step in CI
Signed-off-by: David Young <davidy@funkypenguin.co.nz>
* Update CI on push-to-master (#3)
* Put helm installation step in the correct CI job
Signed-off-by: David Young <davidy@funkypenguin.co.nz>
* Put helm installation step in the correct CI job (#4)
* Update on-push-master-publish-chart.yml
* Remove references to certmanager dependency
Signed-off-by: David Young <davidy@funkypenguin.co.nz>
* Add ability to customize kube-rbac-proxy image
Signed-off-by: David Young <davidy@funkypenguin.co.nz>
* Only install cert-manager if we're going to spin up KinD
Signed-off-by: David Young <davidy@funkypenguin.co.nz>
* when setting a GitHub Enterprise server URL without a namespace, an error occurs: "error: the server doesn't have a resource type "controller-manager"
* setting default namespace "actions-runner-system" makes the example work out of the box
* ensure that minReplicas <= desiredReplicas <= maxReplicas no matter what
* before this change, if the number of runners was much larger than the max number, the applied scale down factor might still result in a desired value > maxReplicas
* if for resource constraints in the cluster, runners would be permanently restarted, the number of runners could go up more than the reverse scale down factor until the next reconciliation round, resulting in a situation where the number of runners climbs up even though it should actually go down
* by checking whether the desiredReplicas is always <= maxReplicas, infinite scaling up loops can be prevented
* feat: adding maanger secret to Helm
* fix: correcting secret data format
* feat: adding in common labels
* fix: updating default values to have config
The auth config needs to be commented out by default as we don't want to deploy both configs empty. This may break stuff, so we want the user to actively uncomment the auth method they want instead
* chore: updating default format of cert
* chore: wording
One of the pod recreation conditions has been modified to use hash of runner spec, so that the controller does not keep restarting pods mutated by admission webhooks. This naturally allows us, for example, to use IRSA for EKS that requires its admission webhook to mutate the runner pod to have additional, IRSA-related volumes, volume mounts and env.
Resolves#200
It turned out previous versions of runner images were unable to run actions that require `AGENT_TOOLSDIRECTORY` or `libyaml` to exist in the runner environment. One of notable examples of such actions is [`ruby/setup-ruby`](https://github.com/ruby/setup-ruby).
This change adds the support for those actions, by setting up AGENT_TOOLSDIRECTORY and installing libyaml-dev within runner images.
* runner/controller: Add externals directory mount point
* Runner: Create hack for moving content of /runner/externals/ dir
* Externals dir Mount: mount examples for '__e/node12/bin/node' not found error
