feat(gitea): move Gitea into the gitea namespace (stage 2 of #878)

- kubernetes/apps/gitea: every object in namespace gitea; applied by a
  new gitea Flux Kustomization (clusters/homelab/gitea.yaml) instead of
  apps. gitea-allow-metrics-scrape dropped: the gitea-ns baseline
  already admits monitoring.
- Rotators (flux-git, review-bot) and the Prometheus gitea job use
  gitea.gitea.svc.
- bootstrap.sh waits for the gitea KS.

Data: data-gitea-0 is not copied. The PV (reclaimPolicy Retain) is
rebound to a PVC gitea/data-gitea-0 pre-created with volumeName, which
the new StatefulSet adopts. gitea-tls is pre-issued in the gitea
namespace so HTTPS has no certificate gap.

Refs #878

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

kubernetes/apps/gitea/ingress.yaml

@@ -2,7 +2,7 @@ apiVersion: networking.k8s.io/v1
 kind: Ingress
 metadata:
   name: gitea
-  namespace: apps
+  namespace: gitea
   labels:
     app.kubernetes.io/name: gitea
   annotations:

kubernetes/apps/gitea/ingressroute-ssh.yaml

@@ -2,7 +2,7 @@ apiVersion: traefik.io/v1alpha1
 kind: IngressRouteTCP
 metadata:
   name: gitea-ssh
-  namespace: apps
+  namespace: gitea
   labels:
     app.kubernetes.io/name: gitea
 spec:

kubernetes/apps/gitea/networkpolicy.yaml

@@ -1,28 +1,8 @@
-apiVersion: cilium.io/v2
-kind: CiliumNetworkPolicy
-metadata:
-  name: gitea-allow-metrics-scrape
-  namespace: apps
-spec:
-  # Prometheus (monitoring ns) scrapes gitea's /metrics on :3000. The apps
-  # default-deny-ingress only allows same-ns / home-assistant / host, so the
-  # scrape is dropped (context deadline exceeded). This became necessary only
-  # after the LXC->in-cluster cutover — the old static target was external, so
-  # no in-cluster policy applied. Scoped to the gitea pod + :3000.
-  endpointSelector:
-    matchLabels:
-      app.kubernetes.io/name: gitea
-  ingress:
-    - fromEndpoints:
-        - matchLabels:
-            "k8s:io.kubernetes.pod.namespace": monitoring
-      toPorts:
-        - ports:
-            - port: "3000"
-              protocol: TCP
----
+# Prometheus scrape and Traefik are admitted by the namespace baseline in
+# infrastructure/network-policies/gitea-ns.yaml.
+#
 # Secret rotation: the flux-git rotator (openbao ns) reaches gitea to mint a new
-# flux PAT. It uses the in-cluster Service (gitea.apps.svc:3000) — the public
+# flux PAT. It uses the in-cluster Service (gitea.gitea.svc:3000) — the public
 # gitea.renner.uno name hairpins off the ingress LB from a pod (same failure as
 # pve.renner.uno). Scoped to the gitea pod :3000 and the rotator label; the
 # egress half is rotator-gitea-flux-egress in network-policies/openbao-ns.yaml.
@@ -30,7 +10,7 @@ apiVersion: cilium.io/v2
 kind: CiliumNetworkPolicy
 metadata:
   name: gitea-allow-flux-rotator
-  namespace: apps
+  namespace: gitea
 spec:
   endpointSelector:
     matchLabels:
@@ -54,7 +34,7 @@ apiVersion: cilium.io/v2
 kind: CiliumNetworkPolicy
 metadata:
   name: gitea-allow-review-bot-rotator
-  namespace: apps
+  namespace: gitea
 spec:
   endpointSelector:
     matchLabels:

kubernetes/apps/gitea/pdb.yaml

@@ -13,7 +13,7 @@ apiVersion: policy/v1
 kind: PodDisruptionBudget
 metadata:
   name: gitea
-  namespace: apps
+  namespace: gitea
   labels:
     app.kubernetes.io/name: gitea
 spec:

kubernetes/apps/gitea/service.yaml

@@ -2,7 +2,7 @@ apiVersion: v1
 kind: Service
 metadata:
   name: gitea
-  namespace: apps
+  namespace: gitea
   labels:
     app.kubernetes.io/name: gitea
 spec:

kubernetes/apps/gitea/statefulset.yaml

@@ -2,7 +2,7 @@ apiVersion: apps/v1
 kind: StatefulSet
 metadata:
   name: gitea
-  namespace: apps
+  namespace: gitea
   labels:
     app.kubernetes.io/name: gitea
 spec:
@@ -152,7 +152,7 @@ spec:
           # NOTE: volumeClaimTemplates is immutable on an existing StatefulSet,
           # so bumping this value cannot be `kubectl apply`-ed in place — Flux
           # will reject the whole object. Landing this size change requires a
-          # one-time `kubectl delete statefulset gitea -n apps --cascade=orphan`
+          # one-time `kubectl delete statefulset gitea -n gitea --cascade=orphan`
           # (pod + PVC keep running) so Flux re-creates the STS from this
           # template and re-adopts them. After the cleanup_packages GC reclaims
           # the ~10G of orphaned blobs, real usage is ~9G, so 40Gi is headroom.

kubernetes/apps/kustomization.yaml

@@ -3,8 +3,8 @@ kind: Kustomization
 resources:
   - gatus/
   - external-dns/
-  - gitea/
   - ical-proxy/
+  # gitea/ has its own `gitea` Kustomization (clusters/homelab/gitea.yaml, #878).
   # woodpecker/ moved to its own dedicated `woodpecker` Kustomization
   # (clusters/homelab/woodpecker.yaml) so its wp-pg CNPG cluster's barman
   # dependency + Cluster health-gating don't contaminate this shared apps KS.

kubernetes/apps/monitoring/helmrelease-prometheus.yaml

@@ -91,12 +91,11 @@ spec:
         # Additional scrape targets not covered by ServiceMonitors.
         additionalScrapeConfigs:
           # Gitea exposes /metrics anonymously on its main HTTP port. The
-          # `gitea_*` metrics power the gitea-overview dashboard. Gitea now runs
-          # in-cluster (StatefulSet in apps ns; LXC 114 retired), so scrape the
-          # ClusterIP Service directly instead of the dead LXC hostname.
+          # `gitea_*` metrics power the gitea-overview dashboard. Scrapes the
+          # ClusterIP Service of the StatefulSet in the gitea namespace.
           - job_name: gitea
             static_configs:
-              - targets: ["gitea.apps.svc.cluster.local:3000"]
+              - targets: ["gitea.gitea.svc.cluster.local:3000"]
             metrics_path: /metrics
 
     # Grafana

kubernetes/bootstrap.sh

@@ -1946,6 +1946,7 @@ if phase_runs wait-apps; then
     # apps waits on infrastructure-ceph-cluster (Ceph mon/mgr/OSD bring-up
     # is genuinely 5–10 min on a fresh OSD-wiped cluster).
     wait_kustomization apps                "apps"                                                90
+    wait_kustomization gitea               "Gitea (incl. data-gitea-0 PVC)"                      90
     wait_kustomization influxdb            "InfluxDB (HR install + token Jobs)"                  600
     wait_kustomization woodpecker          "Woodpecker CI (incl. wp-pg CNPG backend)"            600
     wait_kustomization authentik           "Authentik (incl. ak-pg CNPG backend)"                600

kubernetes/clusters/homelab/gitea.yaml

@@ -0,0 +1,20 @@
+apiVersion: kustomize.toolkit.fluxcd.io/v1
+kind: Kustomization
+metadata:
+  name: gitea
+  namespace: flux-system
+spec:
+  # Gitea in its own `gitea` namespace (#878), formerly under the shared `apps` KS.
+  interval: 10m
+  retryInterval: 2m
+  timeout: 15m
+  sourceRef:
+    kind: GitRepository
+    name: flux-system
+  path: ./kubernetes/apps/gitea
+  prune: true
+  wait: true
+  dependsOn:
+    - name: infrastructure
+    - name: infrastructure-crds
+    - name: infrastructure-ceph-cluster

kubernetes/infrastructure/openbao/rotation/flux-git.yaml

@@ -6,7 +6,7 @@
 # newest. A token that fails verification is deleted and the run aborts without
 # storing, so Flux is never stranded.
 #
-# gitea is reached at the in-cluster Service gitea.apps.svc:3000 — the public
+# gitea is reached at the in-cluster Service gitea.gitea.svc:3000 — the public
 # name hairpins off the ingress LB from a pod. Needs BOTH netpol halves
 # (gitea-allow-flux-rotator + rotator-gitea-flux-egress).
 #
@@ -76,7 +76,7 @@ spec:
                 - name: BAO_PATH
                   value: homelab/infrastructure/flux-git
                 - name: GITEA_URL
-                  value: http://gitea.apps.svc.cluster.local:3000
+                  value: http://gitea.gitea.svc.cluster.local:3000
                 - name: GITEA_VERIFY_REPO
                   value: k.renner/homelab
                 - name: GITEA_SCOPES

kubernetes/infrastructure/openbao/rotation/review-bot.yaml

@@ -24,7 +24,7 @@
 # synced. Quarterly cadence + backoffLimit:1 makes a two-cycle failure unlikely,
 # but a failed sync should be fixed before the next run rather than left.
 #
-# gitea is reached in-cluster at gitea.apps.svc:3000, woodpecker at
+# gitea is reached in-cluster at gitea.gitea.svc:3000, woodpecker at
 # woodpecker.woodpecker.svc:8000 (it moved out of `apps` in the namespace
 # migration — see kubernetes/apps/woodpecker/MIGRATION-namespace.md). Needs
 # the netpol halves: gitea-allow-review-bot-rotator + woodpecker-allow-rotators
@@ -99,7 +99,7 @@ spec:
                 - name: BAO_PATH
                   value: homelab/infrastructure/review-bot
                 - name: GITEA_URL
-                  value: http://gitea.apps.svc.cluster.local:3000
+                  value: http://gitea.gitea.svc.cluster.local:3000
                 # Private repo review-bot collaborates on: the pull check is a
                 # real access verification (git-upload-pack on a PRIVATE repo
                 # needs a token with access), not the "any valid token" weakness