feat(apps): onboard semaphore (Phase 6) — second CNPG-DB + OIDC-target app
Semaphore (Ansible UI, docs/13 row 10): internal exposure, internet egress,
config on Longhorn + external PostgreSQL, auth oidc. Reuses the CNPG-DB pattern
nextcloud established (apps/nextcloud-db.yaml, commit 4be6752).
- catalog/semaphore.yaml: ServiceDefinition (schema >=1.2.0 env) wiring the
SEMAPHORE_DB_* connection to semaphore-db-rw.semaphore-db:5432, break-glass
SEMAPHORE_ADMIN* local admin, and the FIXED base64 SEMAPHORE_ACCESS_KEY_ENCRYPTION.
- apps/semaphore.yaml: rendered (render.py --no-image-automation) — Deployment,
config PVC, Service, default-deny + egress/gateway/internet CNPs, HTTPRoute
semaphore.home.keithjackson.dev:3000, ServiceMonitor, SLI alert.
- apps/semaphore-db.yaml: CNPG Cluster in dedicated ns semaphore-db, initdb from
the owner secret, inheritedMetadata app.kubernetes.io/name=semaphore-db so the
dep-edge egress CNP matches.
- apps/semaphore-db-app.sops.yaml + apps/semaphore-bootstrap-secret.sops.yaml:
SOPS(age) owner creds (basic-auth) + mirrored db-password, break-glass admin,
and the persistent access-key encryption key.
OIDC (Keycloak realm client) is DEFERRED like gitea/nextcloud — comes up on the
break-glass local admin; realm-client wiring is the batched follow-up.
Co-Authored-By: Claude Opus 4.8 <[email protected]>
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# ServiceDefinition: semaphore
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# Source of truth: spec docs/13-service-catalog.md row 10; docs/15-identity-and-access.md; docs/04.
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# internal Ansible UI | egress internet | config on Longhorn + external PostgreSQL | auth oidc.
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#
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# Semaphore (semaphoreui/semaphore) is a web UI for running Ansible/Terraform. It is a stateless
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# app over (a) its /etc/semaphore config PVC on Longhorn and (b) an external PostgreSQL — the
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# SECOND CNPG-DB app, reusing the pattern nextcloud established (apps/nextcloud-db.yaml). Its DB is
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# a CloudNativePG Cluster in a dedicated namespace (apps/semaphore-db.yaml).
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#
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# DB WIRING (schema >=1.2.0 env): the app reaches its PostgreSQL cross-namespace at
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# semaphore-db-rw.semaphore-db:5432 (the CNPG read-write Service). Its owner credentials are the
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# SAME password held in two SOPS secrets — semaphore-db-app (basic-auth, ns semaphore-db; consumed
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# by the CNPG Cluster's initdb) and semaphore-bootstrap (ns semaphore; consumed here as db-password).
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# A Pod can only read Secrets in its OWN namespace, so the shared password is duplicated across the
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# two encrypted files rather than replicated cross-namespace (documented in apps/semaphore-db.yaml).
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#
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# PERSISTENT ENCRYPTION KEY: SEMAPHORE_ACCESS_KEY_ENCRYPTION is a base64 32-byte AES key Semaphore
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# uses to encrypt the SSH keys / access credentials it stores in the DB. It MUST be FIXED and stable
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# across restarts — if it changes, every stored credential becomes undecryptable. It is pinned via
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# the semaphore-bootstrap SOPS secret (like gitea's SECRET_KEY), never regenerated per boot.
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# Validates against schemas/servicedefinition.schema.json.
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name: semaphore
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kind: container
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source:
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image: semaphoreui/semaphore:v2.19.10 # pinned recent stable tag (R-UPD-01); update.range governs advancement
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env:
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# --- PostgreSQL connection (the CNPG-DB pattern). DIALECT/HOST/PORT/DB/USER are literals; PASS is
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# sourced from the in-namespace SOPS secret (the CNPG -app secret lives in ns semaphore-db,
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# unreachable by a Pod secretKeyRef, so the same value is mirrored into semaphore-bootstrap). ---
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- name: SEMAPHORE_DB_DIALECT
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value: postgres
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- name: SEMAPHORE_DB_HOST
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value: semaphore-db-rw.semaphore-db.svc.cluster.local
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- name: SEMAPHORE_DB_PORT
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value: "5432"
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- name: SEMAPHORE_DB
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value: semaphore
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- name: SEMAPHORE_DB_USER
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value: semaphore
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- name: SEMAPHORE_DB_PASS
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valueFrom:
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secretKeyRef:
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name: semaphore-bootstrap
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key: db-password
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# --- Break-glass local admin (docs/15 availability caveat): created on first-boot so the operator
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# is never locked out by an IdP outage. Username/password sourced from the SOPS secret; the
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# display name + email are non-sensitive literals. ---
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- name: SEMAPHORE_ADMIN
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valueFrom:
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secretKeyRef:
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name: semaphore-bootstrap
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key: admin-username
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- name: SEMAPHORE_ADMIN_PASSWORD
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valueFrom:
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secretKeyRef:
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name: semaphore-bootstrap
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key: admin-password
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- name: SEMAPHORE_ADMIN_NAME
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value: Semaphore Admin
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- name: SEMAPHORE_ADMIN_EMAIL
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value: [email protected]
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# --- Persistent access-key encryption key (see header): FIXED base64 32-byte key from SOPS so the
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# SSH keys / credentials Semaphore stores in the DB stay decryptable across restarts. ---
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- name: SEMAPHORE_ACCESS_KEY_ENCRYPTION
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valueFrom:
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secretKeyRef:
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name: semaphore-bootstrap
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key: access-key-encryption
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exposure: internal # LAN-only (internal DNS + Gateway on LAN); not edge-forwarded (docs/09; R-DNS/R-NET)
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egress: internet # normal WAN egress (docs/03; R-NET-05) — clones repos, installs Galaxy roles
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storage:
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- name: config
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size: 1Gi
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class: longhorn # config (generated config.json, tmp inventories) on the 3-replica tier
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mountPath: /etc/semaphore # Semaphore reads/writes its config under /etc/semaphore (R-STATE-02)
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dependencies:
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- to: semaphore-db # explicit allow: Semaphore -> its PostgreSQL (docs/13 graph; R-NET-02).
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port: 5432 # Renders the egress half; the DB namespace mirrors keycloak-db (no
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protocol: tcp # default-deny), so Cilium's default-allow accepts the reciprocal ingress.
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ingressRoutes:
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- host: semaphore.home.keithjackson.dev
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port: 3000 # Semaphore HTTP web/API; wildcard TLS terminates at the shared Gateway (docs/08/09)
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auth:
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mode: oidc # native Keycloak OIDC client (docs/13 SSO row, docs/15 "Native OIDC"; 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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# NOTE (OIDC follow-up + break-glass): like Gitea/Nextcloud (docs/15 "Availability caveat"),
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# Semaphore keeps a LOCAL admin as the break-glass path so an IdP outage never locks the operator
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# out. At initial deploy it comes up on that local admin (SEMAPHORE_ADMIN* env above). The Keycloak
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# `semaphore` realm client + Semaphore's OIDC provider config (config.json `oidc_providers`) is a
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# DEFERRED follow-up: wiring it means editing the reconciled realm import in platform-config (a
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# malformed edit fails the whole platform-config apply / can leave the realm import PENDING) — so it
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# is deferred rather than risking the running Keycloak realm / Flux source. This records the target
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# integration; it embeds no secret.
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update:
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channel: stable # R-UPD-01
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range: ">=2.19.0 <3.0.0" # stay on the 2.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 # automation UI down is a critical alert (docs/10; R-OBS-01)
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backup:
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policy: daily-offcluster # DR-critical: its DB holds automation credentials, backed up off-cluster (docs/13, docs/04; R-STATE-03)
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