theta-suite/docs/architecture.md

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Architecture

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theta-env is a composition repo: it builds the two existing projects from their git submodules and adds the glue that wires them together. It does not fork or patch them — both projects work unchanged on their own.

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The three repos

Repo	Role
theta42/sso-manager-node	OIDC provider + OpenLDAP directory + web UI. All-in-one image (Dockerfile.openldap).
theta42/proxy	OIDC-protected reverse proxy (OpenResty + Node mgmt app + Redis). All-in-one image (Dockerfile).
theta42/theta-env (this repo)	Composes the two on one Docker network + automates first-run wiring.

The two projects are pinned as git submodules. git clone --recursive fetches all three in one step; git submodule update --remote bumps them.

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The two containers

            ┌──────────────────────────────────────────────┐
            │  your browser / apps / legacy LDAP clients     │
            └───────────────┬──────────────────────────────┘
                            │ https (:443)        ldaps (:636)
                  ┌─────────▼─────────┐
                  │  proxy container  │  OpenResty :80/:443/:4443
                  │  (OIDC + LDAP)    │  Node mgmt app :3000 (localhost only)
                  │                   │  bundled Redis (127.0.0.1:6379)
                  └─────────┬─────────┘
              ┌─────────────┼────────────────────────────┐
              │ ldaps:636   │ http:3001 (internal)       │  OIDC token + userinfo
              │ (docker net)│ (docker net, not published)│  (server-to-server)
              ▼             ▼                           │
      ┌──────────────────────────────┐                   │
      │  sso-manager container       │◄──────────────────┘
      │  OIDC provider (Express)     │  bundled Redis (127.0.0.1:6379)
      │  OpenLDAP (slapd)            │  web UI :3001 (localhost only)
      │  ldaps :636 (published)      │
      └───────────────────────────────┘
            ▲
            │ ldaps :636 (published to host) — legacy apps bind directly
            │
      ┌──────────────────────────────┐
      │  legacy apps (Gitea, Emby, …)│
      └──────────────────────────────┘

Both containers bundle their own Redis (the proxy hardcodes 127.0.0.1:6379 in three places that ignore config; the SSO's models default to the same). Two redis instances is the no-source-patch path and is fine at this scale.

What's exposed, what's not

Port	On host?	Purpose
443 (proxy)	yes	the public entry point — OIDC login + proxied apps + the SSO/proxy UIs
80 (proxy)	yes	HTTP-01 for Let's Encrypt (and redirect to 443)
4443 (proxy)	yes (optional)	alt HTTPS listener
3000 (proxy)	localhost only	proxy mgmt UI/API (first-run convenience; fronted by 443 normally)
636 (sso)	yes	LDAPS for legacy direct-LDAP clients
3001 (sso)	localhost only	SSO web UI (first-run convenience; fronted by the proxy normally)
389 (sso)	no	plain LDAP — internal only (app↔slapd over localhost)

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The first-run bootstrap

./setup.sh orchestrates first-run wiring; bootstrap/bootstrap.js does the actual work, running inside the sso-manager container (bind-mounted read-only from this repo). It's deliberately self-contained — only Node built-ins (child_process, crypto, fs) + global fetch, and it reads its inputs from the bind-mounted ./config/sso-secrets.js + ./config/proxy-secrets.js (not from env):

1. Build + start sso-manager, wait for /health.
2. LDAP service account — ldapadd cn=ldapclient,ou=people,<base> (an organizationalRole with a {SSHA512} password). The proxy binds as this DN — not the admin DN.
3. First admin user — ldapadd cn=<uid>,ou=people,<base> (inetOrgPerson + posixAccount, {SSHA512} password) and add them as member of app_sso_admin + app_sso_oauth_admin (the SSO's permission check reads the group's member list).
4. Log in as that admin via POST /api/auth/login {uid,password} — this also validates the password end-to-end.
5. Register the proxy as an OIDC client via POST /api/oauth/client (gated by app_sso_oauth_admin, satisfied by step 3). The SSO generates the client_id/client_secret (UUIDs) — supplied creds are ignored — so the bootstrap writes the generated creds back into ./config/proxy-secrets.js (the sso-manager mounts ./config read-write for this; the proxy mounts it read-only). If proxy-secrets.js already holds a clientId+clientSecret matching an existing client, they are kept; if the client exists but the file has no usable secret, the secret is rotated and written back.
6. Build + start the proxy, wait for /health. The proxy entrypoint symlinks ./config/proxy-secrets.js to /app/conf/secrets.js, so @simpleworkjs/conf (≥1.1.0) reads the OAuth creds + LDAP bind creds from the file.

setup.sh then prints the first-admin login + the public URLs.

How config reaches the apps (no .env)

All config and secrets live in ./config/ (gitignored, bind-mounted). Each entrypoint symlinks its file to /app/conf/secrets.js early, before the app starts:

./config/sso-secrets.js    ->  sso-manager:/app/conf/secrets.js   (./config RW)
./config/proxy-secrets.js  ->  proxy:/app/conf/secrets.js         (./config RO)

@simpleworkjs/conf loads conf/base.js → <env>.js → conf/secrets.js → app_* env, where env beats secrets.js. So compose passes no app_* env vars (only NODE_ENV, NODE_PORT) — that makes secrets.js authoritative. The SSO entrypoint reads the few values it needs at startup (LDAP base DN, admin password, JWT secret, cert CN) from secrets.js via an in-container node call.

Why not require the SSO's internal models?

A docker compose exec process reads conf/base.js defaults (the docker-exec env doesn't carry the entrypoint's exported vars), so the SSO's models would bind the wrong LDAP DN. Using the openldap-clients binaries with explicit admin creds from ./config/sso-secrets.js sidesteps that entirely, and going through the HTTP API for the OAuth client validates the whole admin login path end-to-end.

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Idempotency

Re-running ./setup.sh converges to ./config/:

• The LDAP service account + admin passwords are reset to ./config/.
• Group membership is ensured (add is a no-op if already a member).
• The OAuth client is kept if proxy-secrets.js already holds its creds; created or rotated otherwise, and the new creds written back.

So setup.sh is safe to re-run after editing ./config/, after a docker compose down, or after restoring from backup.

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Backups and restore

./setup.sh auto-snapshots ./config/ + LDAP + both Redis to ./backups/<timestamp>/ before each rebuild (keeps the last BACKUP_KEEP, default 5). State lives on named volumes (ldap-data, sso-data, proxy-data) and survives recreation; down -v wipes them. Redis is persisted with AOF + RDB on those volumes. For the full manual-backup + restore runbook (full / Redis-only / LDAP-only, with the AOF-vs-RDB note), see the Backups and restore section of the README. Quick LDAP backup:

docker compose exec sso-manager slapcat -f /etc/openldap/slapd.conf -b "<base>" > backup.ldif

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