Backing Up a LXD Server

Log in to the "Backup Remote" server. LXD has already been installed, and only needs to be configured:

lxd init

Use the default settings until asked if LXD should be available over the network, then type yes. Bind to all addresses and the default port, then set the password to pinehead:

Would you like LXD to be available over the network? (yes/no) [default=no]: yes
Address to bind LXD to (not including port) [default=all]:
Port to bind LXD to [default=8443]:
Trust password for new clients: pinehead
Again: pinehead

On the LXD server, add the Backup server as a remote:

lxc remote add backups 10.0.1.110

To create a backup, we want to work in two steps: Taking the snapshot and copying over the snapshot over to the backup remote. We also need to remove any existing backup snapshots and containers:

#! /bin/bash

containers="web1 db1"

for c in $containers
do
        lxc delete $c/backup &> /dev/null
        lxc snapshot $c backup
        lxc delete backup:$c &> /dev/null
        lxc copy local:${c}/backup backups:$c
done

When finished, ensure the script is executable:

chmod +x backups.sh

Add the script to your crontab:

crontab -e

0 0 * * * /home/cloud_user/backups.sh