245 lines
16 KiB
YAML
245 lines
16 KiB
YAML
# ServiceDefinition: gitea
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# Source of truth: spec docs/13-service-catalog.md row 12; docs/15-identity-and-access.md; docs/05.
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# public git hosting | egress internet | repos+DB on Longhorn (irreplaceable, DR-critical) | auth oidc.
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# Bootstrapping-critical: self-hosts the platform's GitOps source + CI/CD, onboarded EARLY (docs/13
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# "Gitea is bootstrapping-critical", WS-APPS step 2, right after PiHole). A cluster loss would take its
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# own git host with it, so repos/DB are backed up off-cluster + mirrored (R-STATE-03).
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# Single-container Gitea with the built-in SQLite datastore is sufficient at home scale; the repos and
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# DB live on one Longhorn PVC (/data), so no external PostgreSQL is required for this onboarding.
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# Validates against schemas/servicedefinition.schema.json.
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name: gitea
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kind: container
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source:
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image: gitea/gitea:1.27.3 # pinned recent stable tag (R-UPD-01); update.range governs advancement
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# Headless-install bootstrap (formerly apps/gitea-bootstrap-patch.yaml; now first-class via the
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# ServiceDefinition env/envFrom/lifecycle fields, schema >=1.2.0). Gitea must come up INSTALLED
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# without the interactive web wizard and with a FIXED, persistent SECRET_KEY, so all of this is
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# declared here and rendered verbatim onto the app container by catalog/render.py.
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env:
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- name: GITEA__security__INSTALL_LOCK # skip the first-run web installer (headless install)
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value: "true"
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- name: GITEA__security__SECRET_KEY # FIXED persistent key; MUST NOT regenerate per restart or
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valueFrom: # previously-encrypted data breaks. Pinned via the SOPS Secret.
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secretKeyRef:
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name: gitea-bootstrap
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key: secret-key
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- name: GITEA__server__DOMAIN # correct public clone/redirect URLs for the TLS-terminated host
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value: gitea.${BASE_DOMAIN}
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- name: GITEA__server__ROOT_URL
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value: https://gitea.${BASE_DOMAIN}/
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- name: GITEA__actions__ENABLED # Phase 6 CI/CD: declared (not implicit upstream default) so the
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value: "true" # in-cluster act_runner (ns gitea-actions) registers against it
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- name: GITEA__actions__DEFAULT_ACTIONS_URL # resolve `uses: <org>/<action>@ref` from github.com (cluster
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value: github # has internet egress; not air-gapped)
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- name: GITEA_ADMIN_USERNAME # break-glass local admin creds (consumed by the postStart hook)
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valueFrom:
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secretKeyRef:
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name: gitea-bootstrap
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key: admin-username
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- name: GITEA_ADMIN_PASSWORD
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valueFrom:
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secretKeyRef:
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name: gitea-bootstrap
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key: admin-password
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# --- Keycloak native OIDC SSO (auth.mode oidc; docs/15 "Native OIDC"; R-IDP-02/06). The confidential
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# `gitea` realm client's secret is mirrored into this namespace's gitea-bootstrap Secret (the same
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# value SOPS-held in keycloak-realm-clients); the postStart hook registers it as the "keycloak"
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# OAuth2 login source. The LOCAL admin above stays as the break-glass path (docs/15). ---
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- name: GITEA_OIDC_CLIENT_SECRET
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valueFrom:
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secretKeyRef:
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name: gitea-bootstrap
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key: oidc-client-secret
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# app.ini [oauth2_client]: auto-provision a Gitea account on first Keycloak login and link it to an
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# existing local account by verified email, so SSO users don't need a pre-created local user.
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- name: GITEA__oauth2_client__ENABLE_AUTO_REGISTRATION
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value: "true"
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- name: GITEA__oauth2_client__ACCOUNT_LINKING
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value: auto
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- name: GITEA__oauth2_client__USERNAME
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value: preferred_username
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lifecycle:
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postStart:
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exec:
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command:
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- /bin/sh
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- -c
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- |
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# Idempotent break-glass admin bootstrap. Runs alongside the gitea entrypoint
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# (which, with INSTALL_LOCK=true, headless-installs + migrates the DB on first
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# boot). Waits for the DB, then creates the admin only if it does not exist.
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set -u
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export HOME=/data/git
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i=0
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until su-exec git gitea admin user list >/dev/null 2>&1; do
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i=$((i + 1))
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[ "$i" -ge 150 ] && { echo "[gitea-bootstrap] DB not ready after wait; skipping" >&2; exit 0; }
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sleep 2
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done
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if su-exec git gitea admin user list --admin 2>/dev/null | awk 'NR>1{print $2}' | grep -qx "$GITEA_ADMIN_USERNAME"; then
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echo "[gitea-bootstrap] admin '$GITEA_ADMIN_USERNAME' already present"
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else
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n=0
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until su-exec git gitea admin user create \
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--username "$GITEA_ADMIN_USERNAME" \
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--password "$GITEA_ADMIN_PASSWORD" \
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--email "[email protected]" \
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--admin --must-change-password=false; do
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n=$((n + 1))
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[ "$n" -ge 10 ] && { echo "[gitea-bootstrap] admin create failed after retries" >&2; break; }
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sleep 3
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done
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echo "[gitea-bootstrap] created break-glass admin '$GITEA_ADMIN_USERNAME'"
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fi
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# --- Keycloak OIDC login source (idempotent add-or-update; R-IDP-02/06) ---
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# Registers the confidential `gitea` client as the OAuth2 login source "keycloak" against the
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# homelab realm's discovery doc. The `groups` claim maps platform-admins -> Gitea admin
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# (--admin-group). Missing secret => skip (break-glass admin still works), so an unfilled
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# secret never crashes the pod.
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#
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# HARDENED (was a silent first-boot RACE): this step used to fire before the app/network was
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# ready and swallow its failure (|| echo ... >&2, exit 0), so SSO silently never registered.
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# Now it (1) waits — bounded, ~90s — for the Keycloak discovery doc to serve HTTP 200,
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# (2) registers (update-in-place if present, else create), (3) VERIFIES the source actually
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# persisted and retries the whole cycle, and (4) on give-up logs LOUDLY to stderr AND a marker
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# file on the persistent /data volume WITHOUT crashlooping the pod (break-glass admin stays
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# usable). The verify-then-retry loop is the real guarantee against "exit 0 but nothing stuck".
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GITEA_DISCOVERY_URL=https://keycloak.${BASE_DOMAIN}/realms/homelab/.well-known/openid-configuration
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gitea_oidc_fail() {
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echo "[gitea-oidc] FAILED to register 'keycloak' login source: $1" >&2
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{ echo "$(date -u +%Y-%m-%dT%H:%M:%SZ) [gitea-oidc] FAILED: $1"; } >> /data/gitea-oidc-bootstrap.log 2>/dev/null || true
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}
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# NOTE the `$$` escape below — it is load-bearing. apps-wave-0 declares postBuild.
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# substituteFrom cluster-vars, so Flux envsubst rewrites this whole manifest at RECONCILE
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# time, before any container runs. Written unescaped, `$${GITEA_OIDC_CLIENT_SECRET:-}` is not
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# a cluster-var, so envsubst blanked it and the guard reconciled as `[ -z "" ]` — ALWAYS TRUE
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# — making every line below (discovery wait, add/update-oauth, verify-then-retry) DEAD CODE on
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# every boot since 8738871 (2026-08-27). SSO kept working only because the login source was
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# already in the DB; a PVC rebuild or fresh cluster would have come up with NO OIDC at all.
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# Flux STRICT substitution cannot catch this — it EXEMPTS default-operator forms by design.
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# `$${VAR}` is the escape: envsubst emits it back as a plain brace expansion for the shell.
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# Bare `$VAR` and `$(cmd)` are left alone and need NO escaping — which is why the
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# `$GITEA_OIDC_CLIENT_SECRET` uses below always worked and only the guards broke.
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# Contract: clusters/base/apps-vms.yaml. Enforced at render time by catalog/render.py.
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if [ -z "$${GITEA_OIDC_CLIENT_SECRET:-}" ]; then
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echo "[gitea-oidc] GITEA_OIDC_CLIENT_SECRET unset; skipping OIDC source (break-glass admin only)"
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else
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# (1) Wait up to ~90s for the Keycloak discovery doc to be reachable (HTTP 200).
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d=0; disc_ok=0
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while [ "$d" -lt 45 ]; do
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if [ "$(curl -sS -o /dev/null -w '%{http_code}' --max-time 5 "$GITEA_DISCOVERY_URL" 2>/dev/null)" = "200" ]; then
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disc_ok=1; break
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fi
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d=$((d + 1)); sleep 2
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done
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[ "$disc_ok" = 1 ] || gitea_oidc_fail "Keycloak discovery endpoint not reachable (HTTP 200) within timeout"
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# (2)+(3) Register (update-in-place or create) then VERIFY it persisted; retry the whole cycle.
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r=0; reg_ok=0
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while [ "$r" -lt 10 ]; do
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oidc_id=$(su-exec git gitea admin auth list 2>/dev/null | awk '$2=="keycloak"{print $1; exit}')
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if [ -n "$oidc_id" ]; then
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su-exec git gitea admin auth update-oauth --id "$oidc_id" \
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--name keycloak --provider openidConnect --key gitea \
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--secret "$GITEA_OIDC_CLIENT_SECRET" \
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--auto-discover-url "$GITEA_DISCOVERY_URL" \
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--scopes "openid email profile" --group-claim-name groups --admin-group platform-admins >/dev/null 2>&1 || true
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else
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su-exec git gitea admin auth add-oauth \
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--name keycloak --provider openidConnect --key gitea \
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--secret "$GITEA_OIDC_CLIENT_SECRET" \
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--auto-discover-url "$GITEA_DISCOVERY_URL" \
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--scopes "openid email profile" --group-claim-name groups --admin-group platform-admins >/dev/null 2>&1 || true
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fi
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# VERIFY: the "keycloak" source must actually be listed now (guards the exit-0-but-nothing-persisted race).
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if su-exec git gitea admin auth list 2>/dev/null | awk '$2=="keycloak"{f=1} END{exit !f}'; then
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reg_ok=1; break
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fi
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r=$((r + 1)); sleep 3
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done
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if [ "$reg_ok" = 1 ]; then
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echo "[gitea-oidc] login source 'keycloak' registered and verified"
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else
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gitea_oidc_fail "add/update-oauth ran but the 'keycloak' source did not persist after retries"
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fi
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fi
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# A postStart hook MUST exit 0 — a non-zero exit makes the kubelet KILL the container
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# (FailedPostStartHook -> CrashLoopBackOff). This hook already ends 0 on both paths, but
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# it is made EXPLICIT so the guarantee does not depend on whatever statement happens to
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# be last. nextcloud's equivalent hook did depend on that and crashlooped on 2026-09-01,
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# the moment its OIDC guard was fixed and the block actually ran for the first time.
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exit 0
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exposure: public # edge-forwarded git host at gitea.${BASE_DOMAIN} (docs/09; R-DNS/R-NET)
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egress: internet # normal WAN egress (docs/03; R-NET-05)
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storage:
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- name: data
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size: 10Gi
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class: longhorn # repos + SQLite DB on 3-replica Longhorn; irreplaceable (docs/04; R-STATE-02)
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mountPath: /data # Gitea keeps ALL state (repos, DB, app.ini, INTERNAL_TOKEN) directly under /data;
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# the default /data/<name> would strand real state on the ephemeral rootfs (R-STATE-01)
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dependencies: [] # default-deny: reaches only DNS; git clients reach it north-south via the Gateway (R-NET-01/02)
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ingressRoutes:
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- host: gitea.${BASE_DOMAIN}
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port: 3000 # Gitea HTTP web/API; TLS terminates at the shared Gateway (docs/08, docs/09)
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# THIS IS WHAT KEEPS PROD'S GITOPS OUT OF A DEADLOCK — it is not an incidental allowance. Remove it
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# and prod cannot reconcile AT ALL, in a way that is very hard to diagnose from cold.
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#
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# Prod's Flux source is THIS SERVICE, not a public hostname:
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# clusters/prod/kustomization.yaml -> GitRepository.spec.url =
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# http://gitea.gitea.svc.cluster.local:3000/Home-Network/home-network-k3s-impl.git
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# chosen deliberately so prod's GitOps depends on NEITHER public DNS, Cloudflare, prod's own
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# Gateway, NOR ${BASE_DOMAIN} — a future domain change cannot sever prod from its own source. That
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# file documents the other half of this pair at length; the two must be read together.
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#
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# The only other ingress this entry renders is gitea-allow-gateway-ingress, which admits
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# `fromEntities: [ingress]` — the shared Gateway's Envoy proxy — and nothing else. Flux's
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# source-controller dials the ClusterIP DIRECTLY, so under the namespace default-deny (R-NET-01) its
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# clone was DROPPED (`wget` from source-controller timed out; srcReady=False, "unable to list
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# remote"). The deadlock that made this urgent: the HTTPRoute that would have served the new public
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# name after the 2026-09-13 apex flip lives in a DOWNSTREAM tier, which cannot apply while the
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# source is down — source down -> routes never rename -> source stays down. It was broken on
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# 2026-09-13 with a live `kubectl apply` of a hand-written gitea-allow-flux-ingress, i.e. with a
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# cluster object that existed OUTSIDE git. This declaration renders that object, so one
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# `kubectl delete` or one cluster rebuild can no longer put prod back in the deadlock.
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inClusterClients:
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# `name` is pinned to `flux` (rather than defaulting to the namespace) so the rendered policy name
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# equals the live object's, `gitea-allow-flux-ingress`, and Flux ADOPTS it in place: no
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# near-duplicate policy beside it, and no window in which prod's own source has no allow.
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- name: flux
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namespace: flux-system # matched by NAMESPACE alone — the flux controllers' pod labels belong
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# to upstream's manifests, not to this platform's contract
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port: 3000 # ONLY the Gitea HTTP port — the same single port the Gateway allow opens
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# The PM agent service (platform/pm-agent/). Its dispatcher reads issues and posts comments
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# over this port, and every worker Job clones, pushes and opens pull requests over it. Like
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# Flux's source-controller above, it dials the ClusterIP DIRECTLY — deliberately, so the
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# agent's path to the repository depends on neither public DNS, nor Cloudflare, nor the
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# shared Gateway, nor ${BASE_DOMAIN}. And exactly as for Flux, that means this namespace's
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# own default-deny (R-NET-01) DROPS the connection unless it is declared here: without this
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# entry the dispatcher's egress allow is satisfied and the packet is still discarded at the
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# Gitea end, which presents as an authentication timeout rather than as a policy denial.
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# That is the 2026-09-13 lesson documented at length above, applied before it is relearned.
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- name: pm-agent
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namespace: pm-agent # matched by NAMESPACE alone, so the dispatcher Deployment and every
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# ephemeral worker Job are covered by the one declaration
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port: 3000 # ONLY the Gitea HTTP port
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auth:
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mode: oidc # native Keycloak OIDC client (docs/13 SSO row, docs/15 "Native OIDC" set; R-IDP-02)
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groups:
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- platform-admins # access scoped to an authorized group (R-IDP-06)
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# WIRED (native OIDC): the Keycloak `gitea` confidential client (platform/keycloak/keycloak-realm-
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# import.yaml + live kcadm) is registered as Gitea's "keycloak" OAuth2 login source by the postStart
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# hook, using the client secret mirrored into the gitea-bootstrap Secret (oidc-client-secret; same
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# value SOPS-held in keycloak-realm-clients). platform-admins (groups claim) -> Gitea admin. Gitea
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# KEEPS a LOCAL admin as the break-glass path so an IdP outage never locks the operator out of
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# recovery tools (docs/15 "Availability caveat"). No secret is embedded here.
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update:
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channel: stable # R-UPD-01
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range: ">=1.22.0 <2.0.0" # stay on the 1.x stable line
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cadence: "0 4 * * *"
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autoRollbackOnFailedHealth: true # R-UPD-03
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observability:
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metrics: true
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slis:
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- up # git host down is a critical alert (docs/10; R-OBS-01)
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backup:
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policy: daily-offcluster # DR-critical: repos/DB backed up off-cluster + mirrored (docs/13, docs/04; R-STATE-03)
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