zijlstra-it / backupscripts

Some scripts to back up systems with Duplicity.

Backup scripts

Some scripts to back up systems.

install-duplicity

This script will install the latest greatest Duplicity on RHEL/Centos 7, including lots of dependencies for backends such as Swift and Google Drive.

backup2surfsara

A wrapper for Duplicity to more easily maintain your Duplicity backups.

• /etc/backup2surfsara[.swift|.webdav]
  • Contains (connection) password and (encryption) passphrase.
    • For this reason, the file should be 600; if it's more open than that, backup2surfsara will refuse to run.
  • Contains the backend settings.
  • Contains a list of directories to exclude from the backup, like /proc and /tmp. A notible one is /root/.cache, which contains lots of Duplicity files that are already in the backup!
  • You can specify commands that need to be executed before the backup or after the backup.
  • Currently there are two flavors for this file: one for a swift backend and one for a webdav backend. But Duplicity supports many more.
• /usr/local/sbin/backup2surfsara
  • Loads the configuration from /etc/backup2surfsara
  • Runs the backup (full if it's the first time, incremental after that)
  • When a backup chain becomes longer than a specified interval, a full backup is made again to start a new chain
  • After a specified interval, old chains are removed
  • With --report, generates a report about the backups that have been made
  • With --check, it works as a Nagios/Icinga plugin to check if the latest backup is recent enough

libvirt-live-backup

Makes a backup of a running libvirt virtual machine. This is done by making a snapshot, copying that to a rsync compatible location (a /path or hostname:/path), and then cleaning up the snapshot.

• Tested on Centos 7, but please don't use this on your production VMs without proper testing!
• Supports multiple disks per VM.
• Can back up all running VMs with --all.

To enable libvirt snapshots, you need a Qemu version from the centos-release-qemu-ev repo.

yum -y install centos-release-qemu-ev
yum -y install qemu-kvm-ev

And then I'm afraid you need to reboot your VM host; a restart of libvirtd is not enough.

Known issue:

• During snapshot, the VM may freeze for a while. This could interrupt connections.