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acts
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Another Calendar-based Tarsnap Script
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acts
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ACTS 1.4.2 ========== Another Calendar-based Tarsnap Script. Introduction ------------ `acts` is a minimal shell script that creates backups with Tarsnap. Our design goals: - Just backup, no restore. - Calendar-based backup schedule - Portable, small, code footprint. One daily Tarsnap archive is created per-target per-run. By default, 31 daily and 12 monthly backups are kept, and yearly backups are kept indefinitely. Download -------- You can use the development version of `acts` by cloning this repository, or [download the latest stable release](https://github.com/alexjurkiewicz/acts/releases/). Usage ----- 1. Take `acts.conf.sample`, customise it for your environment, and save it to `/etc/acts.conf` or `/usr/local/etc/acts.conf`. 2. Run `acts` daily from cron. Notes on behaviour: - `acts` creates archives of the form `<hostname>-<period>-yyyy-mm-dd_HH:MM:SS-target`. - Archives are created using the following logic: - Daily archives are created every time acts is run. - Monthly/yearly archives are copied from the most recent daily archive if they don't exist. - Archives are deleted using the following logic by default: - If any backups failed, delete nothing. - Keep the most recent 31 daily backups, and delete any older ones. - Keep the most recent 12 monthly backups, and delete any older ones. - Do not delete any yearly backups. - If you ever remove a backup path from your config, its old backups will no longer be automatically cleaned. TODO ---- - Add per-directory excludes handling. (For now, add global excludes in your `tarsnap.conf` or `.tarsnaprc` file.) FAQ --- * **How do I back up directories with spaces?** Sorry, acts doesn't support this. I suggest you create a symlink to the target directory which doesn't have spaces in its path, and add `-L` to `tarsnapbackupoptions` in your configuration file. * **How do I see the `tarsnap` output?** Basically, you don't. `acts` only shows `tarsnap` output if tarsnap failed. To see what acts is doing, you can set `verbose=1` in your `acts.conf`. You can get some good `tarsnap` info, including exactly how much new data this backup consumed, with a **pre**backupscript. Be sure to set `prebackupscript` in `acts.conf` to wherever you put this script: ```sh #!/bin/sh . /etc/acts.conf # Or wherever your acts.conf lives tarsnap --dry-run --quiet --print-stats --humanize-numbers -C / -c $backuptargets 2>&1 ``` * **Why does `acts` create a separate backup for each target?** This is the original recommended paradigm for `tarsnap`, the idea being that you save bandwidth (and therefore money) by only retrieving the pieces you need. If `/etc` gets damaged, why download the entirety of `/home`? If this paradigm doesn't fit your needs and workflow, there is a fork of `acts` called [calsnap](https://github.com/bannmann/calsnap) that produces one backup containing all targets. Help ---- Open a [Github issue](https://github.com/alexjurkiewicz/acts/issues).
