Imported from jeremylongshore/tons-of-skills-marketplace (plugins/devops/fairdb-operations-kit/skills/fairdb-backup-manager/SKILL.md). Install upstream with npx skills add jeremylongshore/tons-of-skills-marketplace --skill fairdb-backup-manager. Copyright stays with the author (MIT).

FairDB Backup Manager

Name: fairdb-backup-manager
Author: jeremylongshore

Overview

Automate backup and recovery operations for FairDB database instances. Generate backup scripts, configure retention policies, schedule automated backups to local storage or S3, and produce tested restore procedures with integrity verification.

Prerequisites

FairDB instance running and accessible with admin credentials
tar and rsync installed for file-level backups
AWS CLI configured with s3:PutObject and s3:GetObject permissions (if using S3 as backup target)
Sufficient storage at backup destination (2-3x database size for rotation)
Cron or systemd timer access for scheduling
Test environment available for restore verification

Instructions

Assess the FairDB instance: identify data directory location, database size, and write throughput
Select backup method: logical dump for portability, filesystem snapshot for speed, or continuous archiving for minimal RPO
Generate backup script with lock acquisition, data export, compression (tar czf), and checksum generation
Configure S3 upload with server-side encryption (aws s3 cp --sse aws:kms) for off-site copies
Set up retention policy: keep hourly backups for 24 hours, daily for 7 days, weekly for 4 weeks, monthly for 12 months
Create cleanup script to purge expired backups according to retention schedule
Schedule backups via cron with proper logging to /var/log/fairdb-backup.log
Generate restore procedure: download from S3, verify checksum, decompress, and import with validation query
Test restore procedure in a staging environment and document the time-to-recovery

Output

Backup shell script with logging, locking, compression, and S3 upload
Restore shell script with checksum verification and data validation
Cron schedule entries or systemd timer units
Retention cleanup script
S3 lifecycle policy configuration for long-term archive tiering

Error Handling

Error	Cause	Solution
`Backup lock acquisition failed`	Another backup or maintenance process is running	Check for stale lock files; implement timeout-based lock with `flock`
`tar: Cannot open: No space left on device`	Local backup destination full	Run retention cleanup; check disk usage with `df -h`; increase volume size
`aws s3 cp: upload failed`	Network issue or expired AWS credentials	Retry with `--retry 3`; refresh credentials; check S3 bucket permissions
`Restore failed: checksum mismatch`	Backup file corrupted during transfer or storage	Re-download from S3; verify S3 object integrity; use a different backup copy
`Database inconsistent after restore`	Backup taken during active write without lock	Ensure backup script acquires a consistent snapshot lock before export

Examples

"Create an automated nightly backup for the FairDB production instance, compressed and uploaded to S3 with KMS encryption and 30-day retention."
"Generate a restore runbook that pulls the latest backup from S3, verifies integrity, and restores to a staging instance for validation."
"Set up backup monitoring that alerts via Slack if a backup job fails or if no successful backup exists within the last 25 hours."

Resources

AWS S3 CLI: https://docs.aws.amazon.com/cli/latest/reference/s3/
rsync documentation: https://rsync.samba.org/documentation.html
Backup automation patterns: https://www.veeam.com/blog/321-backup-rule.html
Linux cron scheduling: https://crontab.guru/

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fairdb-backup-manager

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