home-network-k3s-impl/apps/wave-0/gitea.yaml

---
# Namespace (trust zone; default-deny + policies apply)
apiVersion: v1
kind: Namespace
metadata:
  name: gitea
  labels:
    homelab.keithjackson.dev/app-namespace: 'true'
    gateway-access: shared
  annotations:
    homelab.keithjackson.dev/backup-policy: daily-offcluster
---
# Default-deny baseline (R-NET-01): deny all, allow only DNS
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: default-deny
  namespace: gitea
  labels:
    homelab.keithjackson.dev/baseline: default-deny
spec:
  podSelector: {}
  policyTypes:
  - Ingress
  - Egress
  ingress: []
  egress:
  - to:
    - namespaceSelector:
        matchLabels:
          kubernetes.io/metadata.name: kube-system
    ports:
    - protocol: UDP
      port: 53
    - protocol: TCP
      port: 53
---
# PVC gitea-data (R-STATE)
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: gitea-data
  namespace: gitea
  labels:
    app.kubernetes.io/name: gitea
spec:
  accessModes:
  - ReadWriteOnce
  storageClassName: longhorn
  resources:
    requests:
      storage: 10Gi
---
# Deployment (R-PLAT-02)
apiVersion: apps/v1
kind: Deployment
metadata:
  name: gitea
  namespace: gitea
  labels:
    app.kubernetes.io/name: gitea
spec:
  replicas: 1
  strategy:
    type: Recreate
  selector:
    matchLabels:
      app.kubernetes.io/name: gitea
  template:
    metadata:
      labels:
        app.kubernetes.io/name: gitea
        homelab.keithjackson.dev/egress-class: internet
        homelab.keithjackson.dev/auth-mode: oidc
      annotations:
        homelab.keithjackson.dev/auth-mode: oidc
        homelab.keithjackson.dev/auth-groups: platform-admins
    spec:
      containers:
      - name: gitea
        image: gitea/gitea:1.24.3
        ports:
        - containerPort: 3000
        env:
        - name: GITEA__security__INSTALL_LOCK
          value: 'true'
        - name: GITEA__security__SECRET_KEY
          valueFrom:
            secretKeyRef:
              name: gitea-bootstrap
              key: secret-key
        - name: GITEA__server__DOMAIN
          value: gitea.${BASE_DOMAIN}
        - name: GITEA__server__ROOT_URL
          value: https://gitea.${BASE_DOMAIN}/
        - name: GITEA__actions__ENABLED
          value: 'true'
        - name: GITEA__actions__DEFAULT_ACTIONS_URL
          value: github
        - name: GITEA_ADMIN_USERNAME
          valueFrom:
            secretKeyRef:
              name: gitea-bootstrap
              key: admin-username
        - name: GITEA_ADMIN_PASSWORD
          valueFrom:
            secretKeyRef:
              name: gitea-bootstrap
              key: admin-password
        - name: GITEA_OIDC_CLIENT_SECRET
          valueFrom:
            secretKeyRef:
              name: gitea-bootstrap
              key: oidc-client-secret
        - name: GITEA__oauth2_client__ENABLE_AUTO_REGISTRATION
          value: 'true'
        - name: GITEA__oauth2_client__ACCOUNT_LINKING
          value: auto
        - name: GITEA__oauth2_client__USERNAME
          value: preferred_username
        volumeMounts:
        - name: data
          mountPath: /data
        lifecycle:
          postStart:
            exec:
              command:
              - /bin/sh
              - -c
              - "# Idempotent break-glass admin bootstrap. Runs alongside the gitea entrypoint\n# (which, with INSTALL_LOCK=true, headless-installs + migrates the DB on first\n# boot). Waits for the DB, then creates the admin only if it does not exist.\nset -u\nexport HOME=/data/git\ni=0\nuntil su-exec git gitea admin user list >/dev/null 2>&1; do\n  i=$((i + 1))\n  [ \"$i\" -ge 150 ] && { echo \"[gitea-bootstrap] DB not ready after wait; skipping\" >&2; exit 0; }\n  sleep 2\ndone\nif su-exec git gitea admin user list --admin 2>/dev/null | awk 'NR>1{print $2}' | grep -qx \"$GITEA_ADMIN_USERNAME\"; then\n  echo \"[gitea-bootstrap] admin '$GITEA_ADMIN_USERNAME' already present\"\nelse\n  n=0\n  until su-exec git gitea admin user create \\\n    --username \"$GITEA_ADMIN_USERNAME\" \\\n    --password \"$GITEA_ADMIN_PASSWORD\" \\\n    --email \"[email protected]\" \\\n    --admin --must-change-password=false; do\n    n=$((n + 1))\n    [ \"$n\" -ge 10 ] && { echo \"[gitea-bootstrap] admin create failed after retries\" >&2; break; }\n    sleep 3\n  done\n  echo \"[gitea-bootstrap] created break-glass admin '$GITEA_ADMIN_USERNAME'\"\nfi\n# --- Keycloak OIDC login source (idempotent add-or-update; R-IDP-02/06) ---\n# Registers the confidential `gitea` client as the OAuth2 login source \"keycloak\" against the\n# homelab realm's discovery doc. The `groups` claim maps platform-admins -> Gitea admin\n# (--admin-group). Missing secret => skip (break-glass admin still works), so an unfilled\n# secret never crashes the pod.\n#\n# HARDENED (was a silent first-boot RACE): this step used to fire before the app/network was\n# ready and swallow its failure (|| echo ... >&2, exit 0), so SSO silently never registered.\n# Now it (1) waits \u2014 bounded, ~90s \u2014 for the Keycloak discovery doc to serve HTTP 200,\n# (2) registers (update-in-place if present, else create), (3) VERIFIES the source actually\n# persisted and retries the whole cycle, and (4) on give-up logs LOUDLY to stderr AND a marker\n# file on the persistent /data volume WITHOUT crashlooping the pod (break-glass admin stays\n# usable). The verify-then-retry loop is the real guarantee against \"exit 0 but nothing stuck\".\nGITEA_DISCOVERY_URL=https://keycloak.${BASE_DOMAIN}/realms/homelab/.well-known/openid-configuration\ngitea_oidc_fail() {\n  echo \"[gitea-oidc] FAILED to register 'keycloak' login source: $1\" >&2\n  { echo \"$(date -u +%Y-%m-%dT%H:%M:%SZ) [gitea-oidc] FAILED: $1\"; } >> /data/gitea-oidc-bootstrap.log 2>/dev/null || true\n}\n# NOTE the `$$` escape below \u2014 it is load-bearing. apps-wave-0 declares postBuild.\n# substituteFrom cluster-vars, so Flux envsubst rewrites this whole manifest at RECONCILE\n# time, before any container runs. Written unescaped, `$${GITEA_OIDC_CLIENT_SECRET:-}` is not\n# a cluster-var, so envsubst blanked it and the guard reconciled as `[ -z \"\" ]` \u2014 ALWAYS TRUE\n# \u2014 making every line below (discovery wait, add/update-oauth, verify-then-retry) DEAD CODE on\n# every boot since 8738871 (2026-08-27). SSO kept working only because the login source was\n# already in the DB; a PVC rebuild or fresh cluster would have come up with NO OIDC at all.\n# Flux STRICT substitution cannot catch this \u2014 it EXEMPTS default-operator forms by design.\n# `$${VAR}` is the escape: envsubst emits it back as a plain brace expansion for the shell.\n# Bare `$VAR` and `$(cmd)` are left alone and need NO escaping \u2014 which is why the\n# `$GITEA_OIDC_CLIENT_SECRET` uses below always worked and only the guards broke.\n# Contract: clusters/base/apps-vms.yaml. Enforced at render time by catalog/render.py.\nif [ -z \"$${GITEA_OIDC_CLIENT_SECRET:-}\" ]; then\n  echo \"[gitea-oidc] GITEA_OIDC_CLIENT_SECRET unset; skipping OIDC source (break-glass admin only)\"\nelse\n  # (1) Wait up to ~90s for the Keycloak discovery doc to be reachable (HTTP 200).\n  d=0; disc_ok=0\n  while [ \"$d\" -lt 45 ]; do\n    if [ \"$(curl -sS -o /dev/null -w '%{http_code}' --max-time 5 \"$GITEA_DISCOVERY_URL\" 2>/dev/null)\" = \"200\" ]; then\n      disc_ok=1;\
                \ break\n    fi\n    d=$((d + 1)); sleep 2\n  done\n  [ \"$disc_ok\" = 1 ] || gitea_oidc_fail \"Keycloak discovery endpoint not reachable (HTTP 200) within timeout\"\n  # (2)+(3) Register (update-in-place or create) then VERIFY it persisted; retry the whole cycle.\n  r=0; reg_ok=0\n  while [ \"$r\" -lt 10 ]; do\n    oidc_id=$(su-exec git gitea admin auth list 2>/dev/null | awk '$2==\"keycloak\"{print $1; exit}')\n    if [ -n \"$oidc_id\" ]; then\n      su-exec git gitea admin auth update-oauth --id \"$oidc_id\" \\\n        --name keycloak --provider openidConnect --key gitea \\\n        --secret \"$GITEA_OIDC_CLIENT_SECRET\" \\\n        --auto-discover-url \"$GITEA_DISCOVERY_URL\" \\\n        --scopes \"openid email profile\" --group-claim-name groups --admin-group platform-admins >/dev/null 2>&1 || true\n    else\n      su-exec git gitea admin auth add-oauth \\\n        --name keycloak --provider openidConnect --key gitea \\\n        --secret \"$GITEA_OIDC_CLIENT_SECRET\" \\\n        --auto-discover-url \"$GITEA_DISCOVERY_URL\" \\\n        --scopes \"openid email profile\" --group-claim-name groups --admin-group platform-admins >/dev/null 2>&1 || true\n    fi\n    # VERIFY: the \"keycloak\" source must actually be listed now (guards the exit-0-but-nothing-persisted race).\n    if su-exec git gitea admin auth list 2>/dev/null | awk '$2==\"keycloak\"{f=1} END{exit !f}'; then\n      reg_ok=1; break\n    fi\n    r=$((r + 1)); sleep 3\n  done\n  if [ \"$reg_ok\" = 1 ]; then\n    echo \"[gitea-oidc] login source 'keycloak' registered and verified\"\n  else\n    gitea_oidc_fail \"add/update-oauth ran but the 'keycloak' source did not persist after retries\"\n  fi\nfi\n# A postStart hook MUST exit 0 \u2014 a non-zero exit makes the kubelet KILL the container\n# (FailedPostStartHook -> CrashLoopBackOff). This hook already ends 0 on both paths, but\n# it is made EXPLICIT so the guarantee does not depend on whatever statement happens to\n# be last. nextcloud's equivalent hook did depend on that and crashlooped on 2026-09-01,\n# the moment its OIDC guard was fixed and the block actually ran for the first time.\nexit 0\n"
      volumes:
      - name: data
        persistentVolumeClaim:
          claimName: gitea-data
---
# Service
apiVersion: v1
kind: Service
metadata:
  name: gitea
  namespace: gitea
  labels:
    app.kubernetes.io/name: gitea
spec:
  selector:
    app.kubernetes.io/name: gitea
  ports:
  - name: port-3000
    port: 3000
    targetPort: 3000
---
# CiliumNetworkPolicy gateway-ingress allow (R-NET-01/02): gitea-allow-gateway-ingress
apiVersion: cilium.io/v2
kind: CiliumNetworkPolicy
metadata:
  name: gitea-allow-gateway-ingress
  namespace: gitea
  labels:
    app.kubernetes.io/name: gitea
spec:
  endpointSelector:
    matchLabels:
      app.kubernetes.io/name: gitea
  ingress:
  - fromEntities:
    - ingress
    toPorts:
    - ports:
      - port: '3000'
        protocol: TCP
---
# CiliumNetworkPolicy in-cluster client ingress allow (R-NET-02): gitea-allow-flux-ingress
apiVersion: cilium.io/v2
kind: CiliumNetworkPolicy
metadata:
  name: gitea-allow-flux-ingress
  namespace: gitea
  labels:
    app.kubernetes.io/name: gitea
spec:
  endpointSelector:
    matchLabels:
      app.kubernetes.io/name: gitea
  ingress:
  - fromEndpoints:
    - matchLabels:
        k8s:io.kubernetes.pod.namespace: flux-system
    toPorts:
    - ports:
      - port: '3000'
        protocol: TCP
---
# CiliumNetworkPolicy world egress allow (egress class governs the path; R-NET-05): gitea-allow-internet-egress
apiVersion: cilium.io/v2
kind: CiliumNetworkPolicy
metadata:
  name: gitea-allow-internet-egress
  namespace: gitea
  labels:
    app.kubernetes.io/name: gitea
spec:
  endpointSelector:
    matchLabels:
      app.kubernetes.io/name: gitea
  egress:
  - toEntities:
    - world
  - toEndpoints:
    - matchLabels:
        io.kubernetes.pod.namespace: keycloak
        app: keycloak
---
# HTTPRoute gitea-3000 (R-TLS/R-DNS)
apiVersion: gateway.networking.k8s.io/v1
kind: HTTPRoute
metadata:
  name: gitea-3000
  namespace: gitea
  labels:
    app.kubernetes.io/name: gitea
  annotations:
    homelab.keithjackson.dev/auth-mode: oidc
    homelab.keithjackson.dev/auth-groups: platform-admins
spec:
  parentRefs:
  - name: shared
    namespace: gateway
    sectionName: https
  hostnames:
  - gitea.${BASE_DOMAIN}
  rules:
  - matches:
    - path:
        type: PathPrefix
        value: /
    backendRefs:
    - name: gitea
      port: 3000
---
# ServiceMonitor (R-OBS-01)
apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  name: gitea
  namespace: gitea
  labels:
    release: kube-prometheus-stack
    app.kubernetes.io/name: gitea
spec:
  selector:
    matchLabels:
      app.kubernetes.io/name: gitea
  namespaceSelector:
    matchNames:
    - gitea
  endpoints:
  - port: metrics
    interval: 30s
---
# PrometheusRule SLI alerts (R-OBS-01)
apiVersion: monitoring.coreos.com/v1
kind: PrometheusRule
metadata:
  name: gitea-slis
  namespace: gitea
  labels:
    release: kube-prometheus-stack
    app.kubernetes.io/name: gitea
spec:
  groups:
  - name: gitea.slis
    rules:
    - alert: gitea-down
      expr: up{job="gitea"} == 0
      for: 5m
      labels:
        severity: critical
        service: gitea
      annotations:
        summary: gitea is down
        description: 'gitea has been unreachable for 5m (SLI: up).'