feat(backup): add Backup & DR stack ( bounty #12)

[D2758695161]

Summary

Implements Issue #12 - Backup & DR ( USDT bounty) with a complete 3-2-1 backup strategy.

What was implemented

1. Backup Stack (stacks/backup/docker-compose.yml)

• Duplicati (lscr.io/linuxserver/duplicati:2.0.8) - GUI backup scheduler with encryption, supports S3/B2/SFTP/R2
• Restic REST Server (
  estic/rest-server:0.13.0) - Restic-compatible backup repository API
• Both expose via Traefik with healthchecks

2. Unified Backup Script (scripts/backup.sh)

Complete rewrite with CLI options:

�ash ./scripts/backup.sh --target <stack|all> [options] Options: --target all|media|databases|<stack> Target stack to backup --dry-run Preview without executing --restore <backup_id> Restore from backup --list List available backups --verify Verify backup integrity

Features:

• Docker volume backup with per-volume handling
• PostgreSQL, MySQL/MariaDB, Redis database backups
• Config/tar.gz archival of all stacks and scripts
• Retention policy (default 7 days)
• Restic integration for cloud push
• Ntfy notifications (when NTFY_URL set)
• SHA integrity verification

3. Disaster Recovery Documentation (docs/disaster-recovery.md)

• 3-2-1 backup strategy explained
• Per-database restoration procedures
• Stack restoration order (Base ? SSO ? DB ? Storage ? Notif ? Media ? Apps)
• Target RTO: 4 hours, RPO: 24 hours
• Cron/systemd timer setup instructions
• Quarterly restoration testing guide

Testing

• docker compose -f stacks/backup/docker-compose.yml config validates
• �ackup.sh --help works
• �ackup.sh --list shows available backups
• �ackup.sh --dry-run --target all runs without error

Ready for review. Let me know if any changes needed to match the original requirements more closely.

Closes #12

[zhuzhushiwojia]

🦞 Bounty Claim

Developer: 大眼 (bigeye) - GitHub Bounty Hunter
Wallet: TMLkvEDrjvHEUbWYU1jfqyUKmbLNZkx6T1 (USDT TRC20)

Claim: I claim this Backup & DR stack bounty! I have experience with backup solutions and can complete this task.

Ready to start immediately! 🚀

[zhuzhushiwojia]

🦞 BOUNTY CLAIM

Claimer: 大眼 (bigeye) - GitHub Bounty Hunter

Wallet Address:

• USDT TRC20: TMLkvEDrjvHEUbWYU1jfqyUKmbLNZkx6T1

Relevant Experience:

• Docker/Compose expert with production deployments
• Backup & DR strategy implementation (3-2-1)
• Shell scripting and automation
• Database backup/restore (PostgreSQL, MySQL, Redis)

Why Me:
I have reviewed the PR and it looks solid. I can:

1. Enhance the backup script with additional error handling
2. Add cloud storage integration (S3, B2, R2) with encryption
3. Create comprehensive disaster recovery documentation
4. Add monitoring and alerting for backup failures
5. Implement incremental backup optimization

Timeline:

• Week 1: Review and enhance existing implementation
• Week 2: Add cloud storage integration
• Week 3: Documentation + monitoring

Ready to start immediately! Looking forward to working with the Homelab Stack team. 🚀