Table of Contents

1. Challenge

   Configure the Remote

   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
   

2. Challenge

   Write a Backup Script

   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
   

3. Challenge

   Add the Script to the Crontab

   Add the script to your crontab:

   crontab -e
   

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