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This add support for two upcoming enhancements on the GitHub side of self-hosted runners, ephemeral runners, and `workflow_jow` events. You can't use these yet. **These features are not yet generally available to all GitHub users**. Please take this pull request as a preparation to make it available to actions-runner-controller users as soon as possible after GitHub released the necessary features on their end. **Ephemeral runners**: The former, ephemeral runners, is basically the reliable alternative to `--once`, which we've been using when you enabled `ephemeral: true` (default in actions-runner-controller). `--once` has been suffering from a race issue #466. `--ephemeral` fixes that. To enable ephemeral runners with `actions/runner`, you give `--ephemeral` to `config.sh`. This updated version of `actions-runner-controller` does it for you, by using `--ephemeral` instead of `--once` when you set `RUNNER_FEATURE_FLAG_EPHEMERAL=true`. Please read the section `Ephemeral Runners` in the updated version of our README for more information. Note that ephemeral runners is not released on GitHub yet. And `RUNNER_FEATURE_FLAG_EPHEMERAL=true` won't work at all until the feature gets released on GitHub. Stay tuned for an announcement from GitHub! **`workflow_job` events**: `workflow_job` is the additional webhook event that corresponds to each GitHub Actions workflow job run. It provides `actions-runner-controller` a solid foundation to improve our webhook-based autoscale. Formerly, we've been exploiting webhook events like `check_run` for autoscaling. However, as none of our supported events has included `labels`, you had to configure an HRA to only match relevant `check_run` events. It wasn't trivial. In contrast, a `workflow_job` event payload contains `labels` of runners requested. `actions-runner-controller` is able to automatically decide which HRA to scale by filtering the corresponding RunnerDeployment by `labels` included in the webhook payload. So all you need to use webhook-based autoscale will be to enable `workflow_job` on GitHub and expose actions-runner-controller's webhook server to the internet. Note that the current implementation of `workflow_job` support works in two ways, increment, and decrement. An increment happens when the webhook server receives` workflow_job` of `queued` status. A decrement happens when it receives `workflow_job` of `completed` status. The latter is used to make scaling-down faster so that you waste money less than before. You still don't suffer from flapping, as a scale-down is still subject to `scaleDownDelaySecondsAfterScaleOut `. Please read the section `Example 3: Scale on each `workflow_job` event` in the updated version of our README for more information on its usage.
60 lines
1.6 KiB
YAML
60 lines
1.6 KiB
YAML
apiVersion: actions.summerwind.dev/v1alpha1
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kind: RunnerSet
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metadata:
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name: example-runnerset
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spec:
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# MANDATORY because it is based on StatefulSet: Results in a below error when omitted:
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# missing required field "selector" in dev.summerwind.actions.v1alpha1.RunnerSet.spec
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selector:
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matchLabels:
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app: example-runnerset
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# MANDATORY because it is based on StatefulSet: Results in a below error when omitted:
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# missing required field "serviceName" in dev.summerwind.actions.v1alpha1.RunnerSet.spec]
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serviceName: example-runnerset
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#replicas: 1
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# From my limited testing, `ephemeral: true` is more reliable.
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# Seomtimes, updating already deployed runners from `ephemeral: false` to `ephemeral: true` seems to
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# result in queued jobs hanging forever.
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ephemeral: ${TEST_EPHEMERAL}
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repository: ${TEST_REPO}
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#
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# Custom runner image
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#
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image: ${RUNNER_NAME}:${RUNNER_TAG}
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#
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# dockerd within runner container
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#
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## Replace `mumoshu/actions-runner-dind:dev` with your dind image
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#dockerdWithinRunnerContainer: true
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#
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# Set the MTU used by dockerd-managed network interfaces (including docker-build-ubuntu)
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#
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#dockerMTU: 1450
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#Runner group
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# labels:
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# - "mylabel 1"
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# - "mylabel 2"
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labels:
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- "${RUNNER_LABEL}"
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#
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# Non-standard working directory
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#
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# workDir: "/"
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template:
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metadata:
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labels:
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app: example-runnerset
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spec:
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containers:
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- name: runner
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imagePullPolicy: IfNotPresent
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env:
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- name: RUNNER_FEATURE_FLAG_EPHEMERAL
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value: "${RUNNER_FEATURE_FLAG_EPHEMERAL}"
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#- name: docker
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# #image: mumoshu/actions-runner-dind:dev
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