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Add doc about backup-restore in docker and k8s

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Balasankar "Balu" C 2018-05-03 12:37:28 +05:30
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doc/raketasks/backup_restore.md
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@ -64,6 +64,13 @@ If you are running GitLab within a Docker container, you can run the backup from
docker exec -t <container name> gitlab-rake gitlab:backup:create
```
If you are using the gitlab-omnibus helm chart on a Kubernetes cluster, you can
run the backup task on the gitlab application pod using kubectl
```
kubectl exec -it <gitlab-gitlab pod> gitlab-rake gitlab:backup:create
```
Example output:
```
@ -601,6 +608,34 @@ If there is a GitLab version mismatch between your backup tar file and the insta
version of GitLab, the restore command will abort with an error. Install the
[correct GitLab version](https://packages.gitlab.com/gitlab/) and try again.
### Restore for Docker image and gitlab-omnibus helm chart
For GitLab installations using docker image or the gitlab-omnibus helm chart on
a Kubernetes cluster, restore task expects the restore directories to be empty.
However, with docker and Kubernetes volume mounts, some system level directories
may be created at the volume roots, like `lost+found` directory found in Linux
operating systems. These directories are usually owned by `root`, which can
cause access permission errors since the restore rake task runs as `git` user.
So, to restore a GitLab installation, users have to confirm the restore target
directories are empty.
For both these installation types, the backup tarball has to be available in the
backup location (default location is `/var/opt/gitlab/backups`).
For docker installations, the restore task can be run from host using the
command
```
docker exec -it <name of container> gitlab-rake gitlab:backup:restore
```
Similarly, for gitlab-omnibus helm chart, the restore task can be run on the
gitlab application pod using kubectl
```
kubectl exec -it <gitlab-gitlab pod> gitlab-rake gitlab:backup:restore
```
## 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.