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mukul975
72 lines
3.0 KiB
Markdown
72 lines
3.0 KiB
Markdown
# API Reference: Implementing Immutable Backup with Restic
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## Core Functions
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| Function | Parameters | Returns |
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|----------|-----------|---------|
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| `init_repository(repo_url, password, s3_config)` | Repository URL, password, optional S3 credentials | Init result dict |
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| `create_backup(repo_url, password, source_paths, tags, exclude)` | Repo, password, paths list, optional tags/excludes | Snapshot summary |
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| `verify_backup_integrity(repo_url, password, read_data)` | Repo, password, whether to verify data blobs | Verification result |
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| `list_snapshots(repo_url, password)` | Repo, password | Snapshot list with metadata |
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| `apply_retention_policy(repo_url, password, keep_*)` | Repo, password, retention counts | Pruning result |
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| `test_restore(repo_url, password, snapshot_id)` | Repo, password, snapshot to restore | Restore test result |
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| `get_repository_stats(repo_url, password)` | Repo, password | Size, dedup ratio, file count |
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## S3 Object Lock Configuration
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| Function | Parameters | Returns |
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|----------|-----------|---------|
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| `configure_s3_object_lock(bucket, retention_days, mode)` | Bucket name, days, COMPLIANCE or GOVERNANCE | Config result |
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## Restic Commands Wrapped
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| Command | Description |
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|---------|-------------|
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| `restic init` | Initialize encrypted repository |
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| `restic backup --json` | Create snapshot with JSON progress |
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| `restic check --read-data` | Full integrity verification |
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| `restic snapshots --json` | List snapshots |
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| `restic forget --prune` | Apply retention and reclaim space |
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| `restic restore` | Extract files from snapshot |
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| `restic stats --json` | Repository size statistics |
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## CLI Usage
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```bash
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# Initialize repository
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python agent.py --repo s3:s3.amazonaws.com/my-backups --action init
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# Backup with tags
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python agent.py --repo s3:s3.amazonaws.com/my-backups --action backup \
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--source /var/lib/postgresql /etc --tags database config
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# Full pipeline: backup + verify + retention + restore test
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python agent.py --repo s3:s3.amazonaws.com/my-backups --action full-pipeline \
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--source /srv/data --keep-daily 7 --keep-weekly 4
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```
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## Retention Policy Defaults
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| Parameter | Default | Description |
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|-----------|---------|-------------|
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| `keep-daily` | 7 | Keep 7 daily snapshots |
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| `keep-weekly` | 4 | Keep 4 weekly snapshots |
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| `keep-monthly` | 12 | Keep 12 monthly snapshots |
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| `keep-yearly` | 2 | Keep 2 yearly snapshots |
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## Python Libraries
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| Library | Version | Purpose |
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|---------|---------|---------|
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| `subprocess` | stdlib | Execute restic CLI commands |
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| `hashlib` | stdlib | SHA-256 verification of restored files |
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| `tempfile` | stdlib | Temporary restore target directories |
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| `json` | stdlib | Parse restic JSON output |
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## References
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- Restic Documentation: https://restic.readthedocs.io/
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- AWS S3 Object Lock: https://docs.aws.amazon.com/AmazonS3/latest/userguide/object-lock.html
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- resticpy Python Wrapper: https://mtlynch.github.io/resticpy/
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- Veeam 3-2-1-1-0 Strategy: https://www.veeam.com/blog/321-backup-rule.html
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