This commit eliminates all manual configuration steps for OIDC/SSO setup,
making the infrastructure fully scalable to dozens or hundreds of servers.
## Automation Overview
The deployment now automatically:
1. Authenticates with Zitadel using admin credentials
2. Creates OIDC application via Zitadel Management API
3. Retrieves client ID and secret
4. Configures Nextcloud OIDC provider
**Zero manual steps required!**
## New Components
### Zitadel OIDC Automation
- `files/get_admin_token.sh`: OAuth2 authentication script
- `files/create_oidc_app.py`: Python script for OIDC app creation via API
- `tasks/oidc-apps.yml`: Ansible orchestration for full automation
### API Integration
- Uses Zitadel Management API v1
- Resource Owner Password Credentials flow for admin auth
- Creates OIDC apps with proper security settings:
- Authorization Code + Refresh Token grants
- JWT access tokens
- Role and UserInfo assertions enabled
- Proper redirect URI configuration
### Nextcloud Integration
- Updated `tasks/oidc.yml` to auto-configure provider
- Receives credentials from Zitadel automation
- Configures discovery URI automatically
- Handles idempotency (skips if already configured)
## Scalability Benefits
### Before (Manual)
```
1. Deploy infrastructure
2. Login to Zitadel console
3. Create OIDC app manually
4. Copy client ID/secret
5. SSH to server
6. Run occ command with credentials
```
**Time per server: ~10-15 minutes**
### After (Automated)
```
1. Deploy infrastructure
```
**Time per server: ~0 minutes (fully automated)**
### Impact
- 10 servers: Save ~2 hours of manual work
- 50 servers: Save ~10 hours of manual work
- 100 servers: Save ~20 hours of manual work
## Security
- Admin credentials encrypted with SOPS
- Access tokens are ephemeral (generated per deployment)
- Client secrets never logged (`no_log: true`)
- All API calls over HTTPS only
- Credentials passed via Ansible facts (memory only)
## Documentation
Added comprehensive documentation:
- `docs/OIDC_AUTOMATION.md`: Full automation guide
- How it works
- Technical implementation details
- Troubleshooting guide
- Security considerations
## Testing
The automation is idempotent and handles:
- ✅ First-time setup (creates app)
- ✅ Subsequent runs (skips if exists)
- ✅ Error handling (fails gracefully)
- ✅ Credential validation
## Next Steps
Users can immediately login via SSO after deployment:
1. Visit https://nextcloud.{client}.vrije.cloud
2. Click "Login with Zitadel"
3. Enter Zitadel credentials
4. Automatically logged into Nextcloud
Closes#4🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
