unkin-agent
cd8e2c262f
Deploys arrproxy v0.1.0 (task 9 final integration) into the existing `arrstack` app: the external, Authentik-gated front door for sonarr/radarr/prowlarr with per-user API-key brokering. Manifests are wired to match the arrproxy v0.1.0 code (ports, routes, identity headers, keys dir), mirroring the ghp/artifactapi estate patterns.
## Topology (`apps/base/arrstack/arrproxy/`)
- **oauth2-proxy** Deployment + Service `arrproxy` is the single front (OIDC against the Authentik `arrstack` app). It path-routes via `--upstreams` to:
- `arrproxy-ui` for `/` and static SPA assets,
- `arrproxy-api` for `/api/*` (token API) and `/sonarr|/radarr|/prowlarr` (the *arr proxy).
- `--skip-auth-regex=^/[^/]+/api` bypasses oauth **only** for the *arr proxy API (`/sonarr/api...`), while `/api/tokens`, `/api/me` and the UI stay authenticated.
- Identity+groups reach the api via `--pass-user-headers` (`X-Forwarded-{User,Email,Groups}`). The api reads `ARRPROXY_GROUPS_HEADER=X-Forwarded-Groups` — `--set-xauthrequest` only populates auth_request *response* headers and never reaches an `--upstreams` backend, so it is intentionally not used.
- oauth2-proxy trusts `identity.unkin.net` (internal Vault-PKI CA) via a `combine-certs` initContainer (system roots + `vault-ca-cert`), same pattern as artifactapi.
## Data + secrets
- **CNPG** token store `arrproxy-db` (2 instances, cephrgw S3 backups + nightly ScheduledBackup). arrproxy-api does **not** self-migrate, so a wave-1 ArgoCD `Sync` hook Job applies `migrations/0001_init.sql` (mirrored into a ConfigMap) as the CNPG app user. DSN built from the generated `arrproxy-db-app` Secret.
- **VaultStaticSecrets** (arrstack `default` SA / templated role — no terraform-vault change): `arrproxy-pepper` (seeded) and `oauth-credentials`. The three real *arr keys are **reused** from the existing `<app>-apikey` Secrets, projected one file per app into `/etc/arrproxy/keys`.
## Exposure
- **Gateway** `traefik-external`, hostname `arrstack.unkin.net`, cert-manager `vault-issuer` TLS (`arrproxy-gateway-tls`); HTTPRoute → the oauth2-proxy entry Service (+ HTTP→HTTPS redirect).
- Adds the `arrstack.unkin.net` apex A record → external DMZ VIP `198.18.199.0` to the bind-operator `unkin.net` zone (`apps/base/bind-internal/authoritative/records.yaml`), mirroring the ghp/identity apex records.
## Validation
- `kustomize build --enable-helm apps/overlays/au-syd1/arrstack` renders cleanly; `kubeconform` = 51/51 valid; `pre-commit` passes (no plain Secrets).
## Prerequisites / flags for end-to-end function (NOT in this PR)
- **(a)** Each *arr must run with `UrlBase=/<app>` (path-based hosting) — arrproxy preserves the `/<app>` prefix upstream.
- **(b)** The Authentik `arrstack` OIDC app (terraform-authentik PR #18) must be applied, with redirect URI `https://arrstack.unkin.net/oauth2/callback` registered and the `ak_groups` scope emitted. Confirm the discovery slug matches `OAUTH2_PROXY_OIDC_ISSUER_URL` (`https://identity.unkin.net/application/o/arrstack/`).
- **(c)** Browser XHR to `/<app>/api` is oauth-**bypassed** (skip-auth-regex), so the SPA-driven proxy calls that rely on the session (no per-user token) will not carry identity on that path — expected per the arrproxy trust model; token-based *arr clients are unaffected.
- **NetworkPolicy:** the arrproxy-api Service is not exposed via any HTTPRoute and the api strips forged identity headers in-code, but the README recommends a NetworkPolicy restricting api ingress to oauth2-proxy. The estate currently has **zero** NetworkPolicies, so one was not added here to avoid being the first (and risking probe breakage) before the CNI’s policy/probe behavior is confirmed — flagged as follow-up hardening.
- Please confirm: CNPG size (2 instances / 10Gi), backups on, hostname/VIP, and UI theme.
ARRPROXY_PEPPER was seeded via the agents AppRole at `kv/kubernetes/namespace/arrstack/default/arrproxy-pepper` (key `pepper`).
Reviewed-on: #377
Co-authored-by: unkin-agent <unkin-agent@unkin.net>
Co-committed-by: unkin-agent <unkin-agent@unkin.net>
47 lines
2.7 KiB
YAML
47 lines
2.7 KiB
YAML
---
|
|
# Non-secret oauth2-proxy configuration (client_id/secret/cookie_secret come from
|
|
# the oauth-credentials Secret). oauth2-proxy is the single auth front for the
|
|
# arrstack: it authenticates the UI and the token API against Authentik, and path-
|
|
# routes to the arrproxy-ui / arrproxy-api upstreams. /<app>/api is exempted from
|
|
# auth (SKIP_AUTH_REGEX) so *arr clients presenting a per-user token reach the api
|
|
# directly; the api then validates the token. Everything else requires the oauth
|
|
# session and receives identity via X-Forwarded-* / X-Auth-Request-* headers.
|
|
apiVersion: v1
|
|
kind: ConfigMap
|
|
metadata:
|
|
name: arrproxy-oauth2-env
|
|
namespace: arrstack
|
|
annotations:
|
|
argocd.argoproj.io/sync-wave: "2"
|
|
data:
|
|
OAUTH2_PROXY_HTTP_ADDRESS: "0.0.0.0:4180"
|
|
OAUTH2_PROXY_PROVIDER: "oidc"
|
|
# Authentik arrstack app discovery issuer (served by the internal unkin.net CA;
|
|
# trusted via PROVIDER_CA_FILES below). CONFIRM the slug matches the Authentik
|
|
# application (terraform-authentik PR #18).
|
|
OAUTH2_PROXY_OIDC_ISSUER_URL: "https://identity.unkin.net/application/o/arrstack/"
|
|
OAUTH2_PROXY_REDIRECT_URL: "https://arrstack.unkin.net/oauth2/callback"
|
|
# Longest-prefix wins: /api and /<app> go to arrproxy-api, everything else
|
|
# (the SPA + static assets) to arrproxy-ui.
|
|
OAUTH2_PROXY_UPSTREAMS: "http://arrproxy-ui.arrstack.svc.cluster.local:8080/,http://arrproxy-api.arrstack.svc.cluster.local:8080/api/,http://arrproxy-api.arrstack.svc.cluster.local:8080/sonarr/,http://arrproxy-api.arrstack.svc.cluster.local:8080/radarr/,http://arrproxy-api.arrstack.svc.cluster.local:8080/prowlarr/"
|
|
OAUTH2_PROXY_SCOPE: "openid email profile ak_groups"
|
|
# Populate session.Groups from the Authentik ak_groups claim; pass-user-headers
|
|
# then emits it as a single comma-joined X-Forwarded-Groups header.
|
|
OAUTH2_PROXY_OIDC_GROUPS_CLAIM: "ak_groups"
|
|
# Forward identity + groups to arrproxy-api as X-Forwarded-{User,Email,Groups}
|
|
# (the api reads these; ARRPROXY_GROUPS_HEADER=X-Forwarded-Groups). NOTE:
|
|
# set-xauthrequest is intentionally NOT set -- it only populates auth_request
|
|
# *response* headers, which never reach an --upstreams-proxied backend.
|
|
OAUTH2_PROXY_PASS_USER_HEADERS: "true"
|
|
# Bypass auth ONLY for the *arr proxy API (/<app>/api...): this matches
|
|
# /sonarr/api but NOT /api/tokens or /api/me (which stay authenticated).
|
|
OAUTH2_PROXY_SKIP_AUTH_REGEX: "^/[^/]+/api"
|
|
OAUTH2_PROXY_EMAIL_DOMAINS: "*"
|
|
OAUTH2_PROXY_COOKIE_SECURE: "true"
|
|
OAUTH2_PROXY_COOKIE_DOMAINS: "arrstack.unkin.net"
|
|
OAUTH2_PROXY_WHITELIST_DOMAINS: "arrstack.unkin.net"
|
|
OAUTH2_PROXY_REVERSE_PROXY: "true"
|
|
OAUTH2_PROXY_PROVIDER_CA_FILES: "/etc/ssl/combined/ca-certificates.crt"
|
|
OAUTH2_PROXY_CODE_CHALLENGE_METHOD: "S256"
|
|
OAUTH2_PROXY_SKIP_PROVIDER_BUTTON: "true"
|