# pobsync

`pobsync` is a pull-based backup tool for sysadmins.  
It creates rsync-based snapshots with hardlinking (`--link-dest`) and stores them centrally on a backup server.

Backups are **pulled over SSH**, not pushed, and are designed to be run from cron or manually.

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## Design overview

- Runtime, config, logs and state live under **`/opt/pobsync`**
- Backup data itself is stored under a configurable **`backup_root`** (e.g. `/srv/backups`)
- Two snapshot types:
  - **scheduled**  
    Participates in retention pruning (daily / weekly / monthly / yearly)
  - **manual**  
    Kept outside the scheduled prune chain, defaults to hardlinking from the latest scheduled snapshot
- Minimal dependencies (currently only `PyYAML`)

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## Requirements

- Python **3.11+**
- `rsync`
- `ssh`
- Root or sudo access on the backup server
- SSH keys already configured between backup server and remotes

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## Installation (system-wide, no venv)

This assumes you are installing as root or via sudo.

From the repository root:

```bash
python3 -m pip install --upgrade pip
sudo python3 -m pip install .