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# Backups
Backups should be checked now and then. Some common tasks are listed below.
You'll have to get the correct username from the vault.
## Accessing backup hosts
We use two different borg backup hosts: A primary one and an offsite one.
The URL format for the primary one is
ssh://<hetzner_storagebox_username>@u236610.your-storagebox.de:23/~/backup/<hostname>/repo
while for the offsite one it's
ssh://<rsync_net_username>@prio.ch-s012.rsync.net:22/~/backup/<hostname>
In the examples below, we'll just abbreviate the full address as `<backup_address>`.
If you want to use one of the examples below, you'll have to fill in the
placeholder with your desired full address to the backup repository. For instance,
misc/borg.sh list <backup_address>::20191127-084357
becomes
misc/borg.sh ssh://<hetzner_storagebox_username>@u236610.your-storagebox.de:23/~/backup/homedir.archlinux.org/repo::20191127-084357
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A convenience wrapper script is available at `misc/borg.sh` which makes sure you
use the correct keyfile for the given server.
## Listing backups in repository
This allows you to check which backups are currently available for the given server:
misc/borg.sh list <backup_address>
## Listing files in a specific backup
Once you figured out which backup you want to use, you can list the files inside via:
misc/borg.sh list <backup_address>::<archive_name>
## Getting info for a repository
Check how large all backups for a server are:
misc/borg.sh info <backup_address>
## Getting info for a specific backup
Check how large a single backup is and how long it took to perform:
misc/borg.sh info <backup_address>::<archive_name>
## Mounting a backup
One convenient way to access the files inside an archive is to mount it:
mkdir mnt
misc/borg.sh mount <backup_address>::<archive_name> mnt
You might want to mount it with `-o ignore_permissions` depending on which user
you're using to access the backup.
## Extracing files from a backup
Alternatively, if you don't want to mount it and instead want to extract files directly, you can
do so. Either extract the whole backup:
misc/borg.sh extract <backup_address>::<archive_name>
or just a sub-directory:
misc/borg.sh extract <backup_address>::<archive_name> backup/srv/gitlab
## Adding a new server
Adding a new server to be backed up goes as follows:
* Make sure the new servers host key is synced to `docs/ssh-known_hosts.txt` if not run:
ansible-playbook playbooks/tasks/sync-ssh-hostkeys.yml
* Add the server to [borg-clients] in hosts
* Run the borg role on u236610.your-storagebox.de to allow the new machine to create backups
ansible-playbook playbooks/hetzner_storagebox.yml
* Run the borg role for rsync.net to allow the new machine to create backups
ansible-playbook playbooks/rsync.net.yml
* Run the borg role on the new machine to initialize the repository
ansible-playbook playbooks/$machine.yml -t borg