railiance-apps/manifests/forgejo-runner.yaml

# In-cluster Forgejo Actions runner (ADR-004).
# DinD sidecar + forgejo-runner; registration via init container on first boot.
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: forgejo-runner-data
  namespace: forgejo
  labels:
    app.kubernetes.io/name: forgejo-runner
    app.kubernetes.io/part-of: railiance-apps
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 5Gi
  storageClassName: local-path
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: forgejo-runner-init
  namespace: forgejo
  labels:
    app.kubernetes.io/name: forgejo-runner
data:
  register.sh: |
    #!/bin/sh
    set -eu
    cd /data
    if [ ! -f config.yaml ]; then
      forgejo-runner generate-config > config.yaml
    fi
    if [ ! -f .runner ]; then
      forgejo-runner register --no-interactive \
        --config /data/config.yaml \
        --instance "${FORGEJO_INSTANCE}" \
        --token "${REGISTRATION_TOKEN}" \
        --name "${RUNNER_NAME}" \
        --labels "${RUNNER_LABELS}"
    fi
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: forgejo-runner
  namespace: forgejo
  labels:
    app.kubernetes.io/name: forgejo-runner
    app.kubernetes.io/part-of: railiance-apps
spec:
  replicas: 1
  strategy:
    type: Recreate
  selector:
    matchLabels:
      app.kubernetes.io/name: forgejo-runner
  template:
    metadata:
      labels:
        app.kubernetes.io/name: forgejo-runner
    spec:
      securityContext:
        fsGroup: 1000
      initContainers:
        - name: register
          image: code.forgejo.org/forgejo/runner@sha256:5071e6832313bafe71577e05631bece88caff08fcfb372193e4a21941f4ed54b
          imagePullPolicy: IfNotPresent
          command: ["/bin/sh", "/scripts/register.sh"]
          env:
            - name: FORGEJO_INSTANCE
              value: "https://forgejo.coulomb.social/"
            - name: RUNNER_NAME
              value: "railiance01-build-01"
            - name: RUNNER_LABELS
              value: "self-hosted:host,linux:host,linux_amd64:host,container-build:host,registry-publish:host,railiance01:host,ubuntu-latest:docker://node:20-bookworm,docker:docker://node:20-bookworm"
            - name: REGISTRATION_TOKEN
              valueFrom:
                secretKeyRef:
                  name: forgejo-runner-registration
                  key: token
          volumeMounts:
            - name: data
              mountPath: /data
            - name: init-scripts
              mountPath: /scripts
              readOnly: true
      containers:
        - name: dind
          image: docker.io/library/docker@sha256:aa3df78ecf320f5fafdce71c659f1629e96e9de0968305fe1de670e0ca9176ce
          imagePullPolicy: IfNotPresent
          securityContext:
            privileged: true
          env:
            - name: DOCKER_TLS_CERTDIR
              value: ""
          args:
            - dockerd
            - -H
            - tcp://127.0.0.1:2375
            - --tls=false
          # FORGE-WP-0011: job workload runs here (one job at a time,
          # runner capacity: 1). Request covers idle p95 (391Mi); the limit
          # bounds a build burst. Peak 7d: 200m / 693Mi working set.
          resources:
            requests:
              cpu: 100m
              memory: 432Mi
            limits:
              cpu: 1500m
              memory: 2Gi
          readinessProbe:
            exec:
              command: ["sh", "-c", "wget -q -O- -T 3 http://127.0.0.1:2375/_ping | grep -qx OK"]
            initialDelaySeconds: 10
            periodSeconds: 10
        - name: runner
          image: code.forgejo.org/forgejo/runner@sha256:5071e6832313bafe71577e05631bece88caff08fcfb372193e4a21941f4ed54b
          imagePullPolicy: IfNotPresent
          # FORGE-WP-0011: runner daemon; p95 2m / 56Mi, peak 124m / 459Mi
          # (host-label jobs run in this container). Pod request total
          # 125m / 496Mi. No limit set in this change (see FORGE-WP-0011).
          resources:
            requests:
              cpu: 25m
              memory: 64Mi
            limits:
              # 7-day peak 459Mi (`:host` jobs run in this container); ~2.2x margin.
              memory: 1Gi
          env:
            - name: DOCKER_HOST
              value: tcp://127.0.0.1:2375
          command: ["/bin/sh", "-c"]
          args:
            - |
              set -eu
              echo "waiting for DinD..."
              for i in $(seq 1 90); do
                if wget -q -O- http://127.0.0.1:2375/_ping 2>/dev/null | grep -q OK; then
                  echo "DinD ready"
                  break
                fi
                sleep 2
              done
              exec forgejo-runner daemon --config /data/config.yaml
          volumeMounts:
            - name: data
              mountPath: /data
          readinessProbe:
            exec:
              command: ["/bin/sh", "-c", "wget -q -O- http://127.0.0.1:2375/_ping | grep -q OK"]
            initialDelaySeconds: 15
            periodSeconds: 30
      volumes:
        - name: data
          persistentVolumeClaim:
            claimName: forgejo-runner-data
        - name: init-scripts
          configMap:
            name: forgejo-runner-init
            defaultMode: 0555