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Documentation (6 files, 1500+ lines): Tutorials (3): - 01-deploy-rds-database.md: Deploy PostgreSQL in private network - 02-data-persistence.md: Data persistence with named volumes - 03-security-compliance.md: INF-01/02/03/04 compliance How-to Guides (1): - connect-to-postgresql.md: Connection methods Reference (1): - postgresql-commands.md: PostgreSQL command reference Explanation (1): - database-rds-parallels.md: Docker↔RDS parallels with architecture diagrams Key concepts: - PostgreSQL container → RDS Instance - Private network → VPC Private Subnet - Named volume → EBS volume - Resource limits → DB instance class Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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How-to: Connettersi a PostgreSQL in Docker
Come connettersi al database
Da container nella stessa rete
docker exec lab05-app psql -h db -U lab05_user -d lab05_db
Dall'host con port forwarding (non recommended)
Se devi connetterti dall'host, aggiungi temporaneamente:
# docker-compose.yml
ports:
- "127.0.0.1:5432:5432"
Poi:
psql -h 127.0.0.1 -U lab05_user -d lab05_db
Con pgAdmin o altri tool
- Configura connection string:
host=127.0.0.1 port=5432 user=lab05_user password=lab05_password dbname=lab05_db
- Oppure usa PostgreSQL URI:
postgresql://lab05_user:lab05_password@127.0.0.1:5432/lab05_db
Risoluzione problemi
Connection refused
Il database è in rete privata. Devi connetterti da container nella stessa rete:
# Prima entra in un container
docker exec -it lab05-app sh
# Poi connettiti
psql -h db -U lab05_user -d lab05_db
Password authentication failed
Verifica le credenziali in docker-compose.yml:
grep POSTGRES_PASSWORD docker-compose.yml