Will Anderson
c31edc8b83
Replaces the GCE VM runner with a k8s Deployment in the ci namespace on neuron-platform GKE. Uses Docker-in-Docker for build isolation since Autopilot doesn't expose the node socket. Runner token pulled from Secret Manager via ESO + Workload Identity. - servers/gcp/k8s/gitea-runner/: namespace, serviceaccount, external-secrets, deployment manifests (ci namespace, dind sidecar, idempotent registration) - servers/gcp/k8s/argocd-apps/gitea-runner-gke.yaml: Argo CD Application - servers/gcp/gitea-runner.tf: gitea-runner-gke GCP SA with secretAccessor on gitea-runner-token, Workload Identity binding for ci/gitea-runner, artifactregistry.reader for pulling ci-base image
122 lines
4.0 KiB
YAML
122 lines
4.0 KiB
YAML
---
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# Gitea Actions runner on GKE.
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#
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# Architecture:
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# - init container registers the runner with Gitea (--no-interactive, idempotent)
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# - main container runs act_runner daemon
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# - docker:dind sidecar provides Docker for build jobs (privileged)
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# - emptyDir /data persists runner state within a pod lifetime
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#
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# The runner uses Docker-in-Docker (DinD) rather than a host socket because
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# GKE Autopilot does not expose the node's Docker socket.
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# DinD requires privileged mode — the ci namespace has
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# pod-security.kubernetes.io/enforce: privileged (see namespace.yaml).
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apiVersion: apps/v1
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kind: Deployment
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metadata:
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name: gitea-runner
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namespace: ci
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labels:
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app: gitea-runner
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spec:
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replicas: 1
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selector:
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matchLabels:
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app: gitea-runner
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template:
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metadata:
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labels:
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app: gitea-runner
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spec:
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serviceAccountName: gitea-runner
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securityContext:
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runAsNonRoot: false
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initContainers:
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- name: register
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image: us-central1-docker.pkg.dev/neuron-785695/neuron-ci/ci-base:latest
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command: ["/bin/sh", "-c"]
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args:
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- |
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# Idempotent registration — skip if already registered (.runner file exists).
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if [ -f /data/.runner ]; then
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echo "Runner already registered, skipping."
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else
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act_runner register \
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--instance "${GITEA_INSTANCE_URL}" \
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--token "${GITEA_RUNNER_REGISTRATION_TOKEN}" \
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--name "gke-runner-$(hostname)" \
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--labels "ubuntu-latest:docker://us-central1-docker.pkg.dev/neuron-785695/neuron-ci/ci-base:latest,ubuntu-24.04:docker://us-central1-docker.pkg.dev/neuron-785695/neuron-ci/ci-base:latest,linux,x64" \
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--no-interactive
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fi
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cat > /data/config.yaml << 'CONFIGEOF'
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runner:
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capacity: 2
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timeout: 3h
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container:
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network: host
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docker_host: "tcp://localhost:2375"
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force_pull: true
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valid_volumes: []
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default_image: "us-central1-docker.pkg.dev/neuron-785695/neuron-ci/ci-base:latest"
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env:
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GITEA_SSH_PRIVATE_KEY: ""
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BASH_ENV: "/usr/local/bin/git-ssh-init.sh"
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CONFIGEOF
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env:
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- name: GITEA_INSTANCE_URL
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value: "https://git.neuralplatform.ai"
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- name: DOCKER_HOST
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value: "tcp://localhost:2375"
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envFrom:
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- secretRef:
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name: gitea-runner-token
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volumeMounts:
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- mountPath: /data
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name: data
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workingDir: /data
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containers:
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- name: runner
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image: us-central1-docker.pkg.dev/neuron-785695/neuron-ci/ci-base:latest
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command: ["act_runner", "daemon", "--config", "/data/config.yaml"]
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env:
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- name: GITEA_INSTANCE_URL
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value: "https://git.neuralplatform.ai"
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- name: DOCKER_HOST
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value: "tcp://localhost:2375"
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envFrom:
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- secretRef:
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name: gitea-runner-token
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resources:
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requests:
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cpu: "500m"
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memory: "512Mi"
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limits:
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cpu: "4"
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memory: "4Gi"
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volumeMounts:
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- mountPath: /data
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name: data
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workingDir: /data
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- name: dind
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image: docker:dind
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securityContext:
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privileged: true
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env:
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- name: DOCKER_TLS_CERTDIR
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value: ""
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resources:
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requests:
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cpu: "500m"
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memory: "512Mi"
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limits:
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cpu: "4"
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memory: "4Gi"
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volumeMounts:
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- mountPath: /var/lib/docker
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name: docker-storage
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volumes:
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- name: data
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emptyDir: {}
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- name: docker-storage
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emptyDir: {}
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