Commit 8f0b558a authored by Jacob Vosmaer's avatar Jacob Vosmaer

Add snapshot backup tips

parent 15218672
...@@ -208,3 +208,26 @@ Add the following lines at the bottom: ...@@ -208,3 +208,26 @@ Add the following lines at the bottom:
The `CRON=1` environment setting tells the backup script to suppress all progress output if there are no errors. The `CRON=1` environment setting tells the backup script to suppress all progress output if there are no errors.
This is recommended to reduce cron spam. This is recommended to reduce cron spam.
## Alternative backup strategies
If your GitLab server contains a lot of Git repository data you may find the GitLab backup script to be too slow.
In this case you can consider using filesystem snapshots as part of your backup strategy.
Example: Amazone EBS
> A GitLab server using omnibus-gitlab hosted on Amazon AWS.
> An EBS drive containing an ext4 filesystem is mounted at `/var/opt/gitlab`.
> In this case you could make an application backup by taking an EBS snapshot.
> The backup includes all repositories, uploads and Postgres data.
Example: LVM snapshots + Rsync
> A GitLab server using omnibus-gitlab, with an LVM logical volume mounted at `/var/opt/gitlab`.
> Replicating the `/var/opt/gitlab` directory usign Rsync would not be reliable because too many files would change while Rsync is running.
> Instead of rsync-ing `/var/opt/gitlab`, we create a temporary LVM snapshot, which we mount as a read-only filesystem at `/mnt/gitlab_backup`.
> Now we can have a longer running Rsync job which will create a consistent replica on the remote server.
> The replica includes all repositories, uploads and Postgres data.
If you are running GitLab on a virtualized server you can possibly also create VM snapshots of the entire GitLab server.
It is not uncommon however for a VM snapshot to require you to power down the server, so this approach is probably of limited practical use.
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