Implementing Backup Strategies
Overview
Design and implement backup strategies for databases, file systems, and cloud resources using tools like tar, rsync, pg_dump, mysqldump, AWS S3, and cloud-native snapshot APIs. Covers full, incremental, and differential backup schemes with retention policies, encryption, and automated verification.
Prerequisites
tar, rsync, or restic installed for file-level backups- Database client tools (
pg_dump, mysqldump, mongodump) for database backups
- AWS CLI configured with S3 write permissions (or equivalent GCP/Azure storage access)
- Sufficient storage capacity at backup destination (local, NFS, or object storage)
- Cron or systemd timer access for scheduling automated backups
- GPG or OpenSSL for backup encryption at rest
Instructions
- Inventory all data sources requiring backup: databases, application data directories, configuration files, secrets/certificates
- Classify data by RPO (Recovery Point Objective) and RTO (Recovery Time Objective) requirements
- Select backup strategy per data class: full daily + incremental hourly for databases, snapshot-based for block storage, rsync for file systems
- Generate backup scripts using appropriate tools (
pg_dump --format=custom, tar czf, rsync -avz --delete)
- Configure retention policy: daily backups kept 7 days, weekly kept 4 weeks, monthly kept 12 months
- Add encryption for backups containing sensitive data (
gpg --encrypt or S3 server-side encryption with KMS)
- Set up automated scheduling via cron jobs or systemd timers with proper logging
- Implement backup verification: restore to a test environment on a weekly schedule and validate data integrity
- Configure alerting for backup failures via email, Slack, or PagerDuty
Output
- Backup shell scripts with logging, error handling, and lock files to prevent concurrent runs
- Cron entries or systemd timer/service unit files
- Retention policy configuration (lifecycle rules for S3, cleanup scripts for local)
- Restore runbook with step-by-step recovery procedures
- Monitoring configuration for backup success/failure alerts
Error Handling
| Error |
Cause |
Solution |
No space left on device |
Backup destination full |
Verify retention cleanup is running; increase storage or reduce retention window |
pg_dump: connection refused |
Database not accepting connections or wrong credentials |
Check pg_hba.conf, verify connection string, and test with psql
Ready to use backup-strategy-implementor?
|
