homelab-manifests/admin-system/renovate.yaml

# ============================================
# Renovate Bot - Self-hosted dependency updater
# ============================================
# https://docs.renovatebot.com
# Image: renovate/renovate (plain tag = minimal image, "formerly slim";
#        -slim suffix was retired after v37.440.x, so we pin the plain tag)
#
# PILOT SCOPE (intentionally narrow):
#   Runs weekly (Sat 02:00 Europe/Budapest) as a CronJob and opens
#   dependency-update PRs against admin/homelab-manifests on Gitea.
#   Only the `kubernetes` and `helm-values` managers are enabled, and a
#   default-deny packageRule limits updates to exactly four pilot images:
#     - ghcr.io/thomiceli/opengist
#     - louislam/uptime-kuma
#     - f0rc3/gokapi
#     - docker.io/calcom/cal.com
#   minor/patch -> PR with Gitea native auto-merge; major -> waits for
#   manual approval via a checkbox on the Dependency Dashboard issue.
#
# Stateless & ephemeral: no Service, Ingress, or PVC. Writable /tmp is an
# emptyDir (root FS is read-only); Renovate uses it for git clones + cache.
#
# Secrets (created manually, NOT in git) come from Secret `renovate-secrets`:
#   - RENOVATE_TOKEN              (Gitea PAT)
#   - RENOVATE_GITHUB_COM_TOKEN   (GitHub PAT, for release notes)
# ============================================
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: renovate-config
  namespace: admin-system
  labels:
    app.kubernetes.io/instance: renovate
    app.kubernetes.io/name: renovate
data:
  config.json: |
    {
      "platform": "gitea",
      "endpoint": "https://gitea.dooplex.hu/api/v1",
      "gitAuthor": "Renovate Bot <renovate@dooplex.hu>",
      "repositories": ["admin/homelab-manifests"],
      "onboarding": false,
      "requireConfig": "optional",
      "dependencyDashboard": true,
      "dependencyDashboardTitle": "Renovate Dependency Dashboard",
      "prHourlyLimit": 16,
      "prConcurrentLimit": 16,
      "enabledManagers": ["kubernetes", "helm-values"],
      "kubernetes": {
        "managerFilePatterns": ["/.+\\.ya?ml$/"]
      },
      "packageRules": [
        {
          "description": "All apps: 3-day stability gate before any PR opens",
          "matchPackageNames": ["*"],
          "minimumReleaseAge": "3 days"
        },
        {
          "description": "Auto-merge minor/patch after the stability window",
          "matchUpdateTypes": ["minor", "patch"],
          "automerge": true,
          "automergeType": "pr",
          "platformAutomerge": true
        },
        {
          "description": "Major bumps wait for dashboard approval (catches breaking/schema migrations)",
          "matchUpdateTypes": ["major"],
          "automerge": false,
          "dependencyDashboardApproval": true
        },
        {
          "description": "k3s-bundled components: never touch, they ride k3s upgrades",
          "matchPackageNames": [
            "rancher/local-path-provisioner",
            "rancher/mirrored-coredns/coredns",
            "rancher/mirrored-metrics-server"
          ],
          "enabled": false
        },
        {
          "description": "Critical core: PR opens with changelog but Viktor merges manually (deploy pipeline + SSO + DB operator). Some entries are no-ops if the image isn't pinned in this repo (ArgoCD bootstrap, authentik outpost images inherit chart defaults).",
          "matchPackageNames": [
            "gitea/gitea",
            "quay.io/argoproj/argocd",
            "ghcr.io/goauthentik/server",
            "ghcr.io/goauthentik/ldap",
            "ghcr.io/goauthentik/proxy",
            "ghcr.io/cloudnative-pg/cloudnative-pg"
          ],
          "automerge": false
        },
        {
          "description": "wanderer: db + web update together in one PR",
          "matchPackageNames": ["flomp/wanderer-db", "flomp/wanderer-web"],
          "groupName": "wanderer"
        }
      ],
      "labels": ["renovate"]
    }
---
apiVersion: batch/v1
kind: CronJob
metadata:
  name: renovate
  namespace: admin-system
  labels:
    app.kubernetes.io/instance: renovate
    app.kubernetes.io/name: renovate
    app.kubernetes.io/version: "43.197.0"
spec:
  # Sat 02:00 Europe/Budapest — leaves the full weekend for troubleshooting
  # if a Renovate-merged update breaks something.
  schedule: "0 2 * * 6"
  timeZone: "Europe/Budapest"
  concurrencyPolicy: Forbid
  successfulJobsHistoryLimit: 3
  failedJobsHistoryLimit: 3
  startingDeadlineSeconds: 600
  jobTemplate:
    metadata:
      labels:
        app.kubernetes.io/instance: renovate
        app.kubernetes.io/name: renovate
        app.kubernetes.io/version: "43.197.0"
    spec:
      template:
        metadata:
          labels:
            app.kubernetes.io/instance: renovate
            app.kubernetes.io/name: renovate
            app.kubernetes.io/version: "43.197.0"
          annotations:
            # Renovate uses plain X.Y.Z semver tags (no -slim suffix anymore)
            match-regex.version-checker.io/renovate: '^\d+\.\d+\.\d+$'
        spec:
          enableServiceLinks: false
          restartPolicy: OnFailure
          containers:
            - name: renovate
              image: renovate/renovate:43.197.0
              imagePullPolicy: IfNotPresent
              envFrom:
                - secretRef:
                    name: renovate-secrets
              env:
                - name: TZ
                  value: Europe/Budapest
                - name: LOG_LEVEL
                  value: info
                - name: RENOVATE_CONFIG_FILE
                  value: /config/config.json
                # Renovate needs a writable tmp for git clones + cache;
                # root FS is read-only so point it at the emptyDir below.
                - name: TMPDIR
                  value: /tmp
              resources:
                requests:
                  cpu: 100m
                  memory: 256Mi
                limits:
                  cpu: 2000m
                  memory: 2Gi
              securityContext:
                runAsNonRoot: true
                runAsUser: 12021
                runAsGroup: 0
                allowPrivilegeEscalation: false
                readOnlyRootFilesystem: true
                capabilities:
                  drop:
                    - ALL
              volumeMounts:
                - name: config
                  mountPath: /config
                  readOnly: true
                - name: tmp
                  mountPath: /tmp
          volumes:
            - name: config
              configMap:
                name: renovate-config
            - name: tmp
              emptyDir:
                sizeLimit: 2Gi