Backend:
- Add dbUsername/dbPassword columns to Application entity
- Add optional DB credential fields to CreateApplicationDto
- Auto-generate dbPassword (crypto.randomBytes) and default dbUsername='appuser'
when databaseType != 'none' on app creation
- Store both username and password in K8s DB secret (was password-only)
- Read DB_USER/POSTGRES_USER/MYSQL_USER from secretKeyRef instead of hardcoded
- New restoreDatabaseDump() in KubernetesService: creates K8s Job with
psql/mysql client to restore uploaded SQL dump, waits for completion,
returns logs
- New POST /applications/:id/db-upload endpoint with 500MB file limit
Frontend:
- Add dbUsername/dbPassword to Application and CreateApplicationDto types
- Deploy page: show username/password fields when database is selected,
with generate-random-password button and show/hide toggle
- App detail page: new Database section with connection info (host, port,
db name, username, password with copy-to-clipboard), SQL dump upload
area with drag-and-drop, and restore output logs display
Security:
- Database remains ClusterIP only (no external exposure)
- Credentials stored in K8s Secrets (base64-encoded)
- Dump file uploaded as temporary K8s Secret, auto-cleaned after restore
- Add ClusterPool entity for grouping clusters into named pools
- Support 3 deployment modes: manual cluster, pool load-balanced, default fallback
- Pool strategies: least-apps (fewest deployed apps) and round-robin
- Add pool CRUD API endpoints (admin) and public pool listing
- Frontend deploy page: 3-mode cluster selector (Default/Manual/Pool)
- Frontend app detail: shows assigned cluster and pool info
- Admin pools management page with cluster selection and strategy picker
- Application entity extended with poolId field