AWS RDS

Deploy managed relational databases with Amazon RDS.

Create Database

aws rds create-db-instance \
  --db-instance-identifier mydb \
  --db-instance-class db.t3.micro \
  --engine postgres \
  --engine-version 15 \
  --master-username admin \
  --master-user-password secretpassword \
  --allocated-storage 20 \
  --storage-encrypted \
  --vpc-security-group-ids sg-xxx \
  --db-subnet-group-name my-subnet-group \
  --backup-retention-period 7 \
  --multi-az

Parameter Groups

aws rds create-db-parameter-group \
  --db-parameter-group-name custom-pg \
  --db-parameter-group-family postgres15 \
  --description "Custom PostgreSQL parameters"

aws rds modify-db-parameter-group \
  --db-parameter-group-name custom-pg \
  --parameters "ParameterName=max_connections,ParameterValue=200,ApplyMethod=pending-reboot"

Snapshots & Recovery

# Create snapshot
aws rds create-db-snapshot \
  --db-instance-identifier mydb \
  --db-snapshot-identifier mydb-snapshot

# Restore from snapshot
aws rds restore-db-instance-from-db-snapshot \
  --db-instance-identifier mydb-restored \
  --db-snapshot-identifier mydb-snapshot

Read Replicas

aws rds create-db-instance-read-replica \
  --db-instance-identifier mydb-replica \
  --source-db-instance-identifier mydb

Best Practices

• Enable Multi-AZ for production
• Use encryption at rest
• Implement automated backups
• Use read replicas for read scaling
• Store credentials in Secrets Manager

Related Skills

• terraform-aws – IaC deployment
• aws-secrets-manager – Credentials