LXD Backup script

This Bash script backs up your LXD container (https://www.ubuntu.com/containers/lxd) leveraging Minio Client (https://www.minio.io/features.html) (in place of rclone) to any S3-compatible cloudstore.

What does it do:

• This scripts creates a backup image from a snaphot from your LXC container that is managed with LXD.
• The script will upload your image to any S3-compatible cloudstore with Minio Client (mc).
• Online backup of your LXC container
• Creates an easy and ready to use LXC image to import with the LXC import command.

Requirements:

• Tested with LXD 3.0 and higher.

What it does not cover:

• Create a constant database backup, this does not work with backups.
• Handle your data retention

Installation instructions

You can run the script from the commandline, or place it in your cron.

Prerequisites:

• Install Minio Client: https://minio.io/downloads.html#download-client
• Configure Minio Client by setting up your config hosts (mc config host add [minio host details]): https://docs.minio.io/docs/minio-client-complete-guide

Install it by cloning this repostory on your LXC host:

git clone https://github.com/systemlevel/lxdbackup.git

Then copy the lxdbackup to your $path:

cd lxdbackup && cp lxdbackup /usr/bin/

Make it executable:

chmod +x /usr/bin/lxdbackup

Then test it with:

lxdbackup container-name

How do I set it automatically?

Use a cronjob like this to backup your container every day of the week on 01:10:

10 1 * * * flock -n /tmp/lxdbackup.lock lxdbackup container-name

How do I restore a container?

Download your container image from your cloudstorage and import it with LXC or even import it directly if your cloudstorage provides a HTTP(S) download for your image.

lxc image import <file> --alias <name>

Import from HTTPS directly:

lxc image import https://cloudrkt.com/lxdbackup --alias restored-image