backup_restore.md

# Backup restore

![backup banner](backup_hrz.png)

## Create a backup of the GitLab system

A backup creates an archive file that contains the database, all repositories and all attachments.
This archive will be saved in backup_path (see `config/gitlab.yml`).
The filename will be `[TIMESTAMP]_gitlab_backup.tar`. This timestamp can be used to restore an specific backup.
You can only restore a backup to exactly the same version of GitLab that you created it on, for example 7.2.1.

```
# use this command if you've installed GitLab with the Omnibus package
sudo gitlab-rake gitlab:backup:create

# if you've installed GitLab from source or using the cookbook
sudo -u git -H bundle exec rake gitlab:backup:create RAILS_ENV=production
```

Example output:

```
Dumping database tables:
- Dumping table events... [DONE]
- Dumping table issues... [DONE]
- Dumping table keys... [DONE]
- Dumping table merge_requests... [DONE]
- Dumping table milestones... [DONE]
- Dumping table namespaces... [DONE]
- Dumping table notes... [DONE]
- Dumping table projects... [DONE]
- Dumping table protected_branches... [DONE]
- Dumping table schema_migrations... [DONE]
- Dumping table services... [DONE]
- Dumping table snippets... [DONE]
- Dumping table taggings... [DONE]
- Dumping table tags... [DONE]
- Dumping table users... [DONE]
- Dumping table users_projects... [DONE]
- Dumping table web_hooks... [DONE]
- Dumping table wikis... [DONE]
Dumping repositories:
- Dumping repository abcd... [DONE]
Creating backup archive: $TIMESTAMP_gitlab_backup.tar [DONE]
Deleting tmp directories...[DONE]
Deleting old backups... [SKIPPING]
```

## Upload backups to remote (cloud) storage

Starting with GitLab 7.4 you can let the backup script upload the '.tar' file it creates.
It uses the [Fog library](http://fog.io/) to perform the upload.
In the example below we use Amazon S3 for storage.
But Fog also lets you use [other storage providers](http://fog.io/storage/).

For omnibus packages:

```ruby
gitlab_rails['backup_upload_connection'] = {
  'provider' => 'AWS',
  'region' => 'eu-west-1',
  'aws_access_key_id' => 'AKIAKIAKI',
  'aws_secret_access_key' => 'secret123'
}
gitlab_rails['backup_upload_remote_directory'] = 'my.s3.bucket'
```

For installations from source:

```yaml
  backup:
    # snip
    upload:
      # Fog storage connection settings, see http://fog.io/storage/ .
      connection:
        provider: AWS
        region: eu-west-1
        aws_access_key_id: AKIAKIAKI
        aws_secret_access_key: 'secret123'
      # The remote 'directory' to store your backups. For S3, this would be the bucket name.
      remote_directory: 'my.s3.bucket'
```

If you are uploading your backups to S3 you will probably want to create a new
IAM user with restricted access rights. To give the upload user access only for
uploading backups create the following IAM profile, replacing `my.s3.bucket`
with the name of your bucket:

```json
{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Sid": "Stmt1412062044000",
      "Effect": "Allow",
      "Action": [
        "s3:AbortMultipartUpload",
        "s3:GetBucketAcl",
        "s3:GetBucketLocation",
        "s3:GetObject",
        "s3:GetObjectAcl",
        "s3:ListBucketMultipartUploads",
        "s3:PutObject",
        "s3:PutObjectAcl"
      ],
      "Resource": [
        "arn:aws:s3:::my.s3.bucket/*"
      ]
    },
    {
      "Sid": "Stmt1412062097000",
      "Effect": "Allow",
      "Action": [
        "s3:GetBucketLocation",
        "s3:ListAllMyBuckets"
      ],
      "Resource": [
        "*"
      ]
    },
    {
      "Sid": "Stmt1412062128000",
      "Effect": "Allow",
      "Action": [
        "s3:ListBucket"
      ],
      "Resource": [
        "arn:aws:s3:::my.s3.bucket"
      ]
    }
  ]
}
```

## Storing configuration files

Please be informed that a backup does not store your configuration files.
If you use an Omnibus package please see the [instructions in the readme to backup your configuration](https://gitlab.com/gitlab-org/omnibus-gitlab/blob/master/README.md#backup-and-restore-omnibus-gitlab-configuration).
If you have a cookbook installation there should be a copy of your configuration in Chef.
If you have a manual installation please consider backing up your `gitlab.yml` file, any SSL keys and certificates, and your [SSH host keys](https://superuser.com/questions/532040/copy-ssh-keys-from-one-server-to-another-server/532079#532079).

## Restore a previously created backup

You can only restore a backup to exactly the same version of GitLab that you created it on, for example 7.2.1.

```
# Omnibus package installation
sudo gitlab-rake gitlab:backup:restore

# installation from source or cookbook
bundle exec rake gitlab:backup:restore RAILS_ENV=production
```

Options:

```
BACKUP=timestamp_of_backup (required if more than one backup exists)
```

Example output:

```
Unpacking backup... [DONE]
Restoring database tables:
-- create_table("events", {:force=>true})
   -> 0.2231s
[...]
- Loading fixture events...[DONE]
- Loading fixture issues...[DONE]
- Loading fixture keys...[SKIPPING]
- Loading fixture merge_requests...[DONE]
- Loading fixture milestones...[DONE]
- Loading fixture namespaces...[DONE]
- Loading fixture notes...[DONE]
- Loading fixture projects...[DONE]
- Loading fixture protected_branches...[SKIPPING]
- Loading fixture schema_migrations...[DONE]
- Loading fixture services...[SKIPPING]
- Loading fixture snippets...[SKIPPING]
- Loading fixture taggings...[SKIPPING]
- Loading fixture tags...[SKIPPING]
- Loading fixture users...[DONE]
- Loading fixture users_projects...[DONE]
- Loading fixture web_hooks...[SKIPPING]
- Loading fixture wikis...[SKIPPING]
Restoring repositories:
- Restoring repository abcd... [DONE]
Deleting tmp directories...[DONE]
```

## Configure cron to make daily backups

For Omnibus package installations, see https://gitlab.com/gitlab-org/omnibus-gitlab/blob/master/README.md#scheduling-a-backup .

For installation from source or cookbook:
```
cd /home/git/gitlab
sudo -u git -H editor config/gitlab.yml # Enable keep_time in the backup section to automatically delete old backups
sudo -u git crontab -e # Edit the crontab for the git user
```

Add the following lines at the bottom:

```
# Create a full backup of the GitLab repositories and SQL database every day at 4am
0 4 * * * cd /home/git/gitlab && PATH=/usr/local/bin:/usr/bin:/bin bundle exec rake gitlab:backup:create RAILS_ENV=production CRON=1
```

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.

## 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.