Small bash script for entire machines backups
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Geoffrey Frogeye 8c37e9a179
Run postgresql backup as postgres user
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ckupeye Run postgresql backup as postgres user hace 1 mes
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README.md

ckupeye

Small bash script for entire filesystem backups.

It backups filesystems, sure, but also creates workable version of PostgreSQL / MariaDB backups, Pacman / Apt software list, ACL.

It then uses BorgBackup to create, compress, encrypt and send the backups. You'd probably want to be familiar with the latter if you want to understand this script fully.

DISCLAIMER: This program is just a publication of my personal script. It haven't been tested outside of my (very) specific use case. You'd probably better use it as a reference rather than as is.

Usage

Basically it's just the ckupeye script. Have some example installation instructions, for the client.

git clone https://git.frogeye.fr/geoffrey/ckupeye.git /opt/ckupeye
ln -s /opt/ckupeye/ckupeye /usr/local/bin/ckupeye
mkdir /etc/ckupeye
mkdir /var/lib/ckupeye
cp /opt/ckupeye/config.sample.sh /etc/ckupeye/config.sh
ssh-keygen -t ed25519 -C ckupeye@$(cat /etc/hostname) -f /etc/ckupeye/id_ed25519
$EDITOR /etc/ckupeye/config.sh

And to run it, just ckupeye.

Or, if you don't want to pollute your ‘/’ namespace, provide an argument to the configuration file, as so:

/path/to/ckupeye /path/to/config.sh

For the server, I would recommend having an account for backups (or one account per backup for extra security), and use a ssh forced command. Add something like the following to the user's ~/.ssh/authorized_keys:

restrict,command="borg serve --restrict-to-repository=/var/lib/borg/clientname --append-only --storage-quota=150G" ssh-ed25519 ... ckupeye@clientname

Configuration

At minimum you will need to set BORG_REPO and a BORG_PASSPHRASE in the config file.

Notation

The machine is backed up is called the client, the machine that stores the backup is called the server.