debian-mirror-gitlab/doc/raketasks/backup_restore.md

# Back up and restore GitLab **(CORE ONLY)**

GitLab provides Rake tasks for backing up and restoring GitLab instances.

An application data backup creates an archive file that contains the database,
all repositories and all attachments.

You can only restore a backup to **exactly the same version and type (CE/EE)**
of GitLab on which it was created. The best way to migrate your repositories
from one server to another is through backup restore.

CAUTION: **Warning:**
GitLab will not backup items that are not stored on the
filesystem. If using [object storage](../administration/object_storage.md),
remember to enable backups with your object storage provider if desired.

## Requirements

In order to be able to backup and restore, you need one essential tool
installed on your system.

- **Rsync**: If you installed GitLab:
  - Using the Omnibus package, you're all set.
  - From source, make sure `rsync` is installed. For example:

    ```shell
    # Debian/Ubuntu
    sudo apt-get install rsync

    # RHEL/CentOS
    sudo yum install rsync
    ```

## Backup timestamp

NOTE: **Note:**
In GitLab 9.2 the timestamp format was changed from `EPOCH_YYYY_MM_DD` to
`EPOCH_YYYY_MM_DD_GitLab_version`, for example `1493107454_2018_04_25`
would become `1493107454_2018_04_25_10.6.4-ce`.

The backup archive will be saved in `backup_path`, which is specified in the
`config/gitlab.yml` file.
The filename will be `[TIMESTAMP]_gitlab_backup.tar`, where `TIMESTAMP`
identifies the time at which each backup was created, plus the GitLab version.
The timestamp is needed if you need to restore GitLab and multiple backups are
available.

For example, if the backup name is `1493107454_2018_04_25_10.6.4-ce_gitlab_backup.tar`,
then the timestamp is `1493107454_2018_04_25_10.6.4-ce`.

## Back up GitLab

GitLab provides a simple command line interface to back up your whole instance.
It backs up your:

- Database
- Attachments
- Git repositories data
- CI/CD job output logs
- CI/CD job artifacts
- LFS objects
- Container Registry images
- GitLab Pages content

CAUTION: **Warning:**
GitLab does not back up any configuration files, SSL certificates, or system files.
You are highly advised to [read about storing configuration files](#storing-configuration-files).

Use this command if you've installed GitLab with the Omnibus package:

```shell
sudo gitlab-backup create
```

NOTE: **Note:**
For GitLab 12.1 and earlier, use `gitlab-rake gitlab:backup:create`.

Use this if you've installed GitLab from source:

```shell
sudo -u git -H bundle exec rake gitlab:backup:create RAILS_ENV=production
```

If you are running GitLab within a Docker container, you can run the backup from the host:

```shell
docker exec -t <container name> gitlab-backup create
```

NOTE: **Note:**
For GitLab 12.1 and earlier, use `gitlab-rake gitlab:backup:create`.

If you are using the [GitLab Helm chart](https://gitlab.com/gitlab-org/charts/gitlab) on a
Kubernetes cluster, you can run the backup task using `backup-utility` script on
the GitLab task runner pod via `kubectl`. Refer to [backing up a GitLab installation](https://gitlab.com/gitlab-org/charts/gitlab/blob/master/doc/backup-restore/backup.md#backing-up-a-gitlab-installation) for more details:

```shell
kubectl exec -it <gitlab task-runner pod> backup-utility
```

Similarly to the Kubernetes case, if you have scaled out your GitLab
cluster to use multiple application servers, you should pick a
designated node (that won't be auto-scaled away) for running the
backup Rake task. Because the backup Rake task is tightly coupled to
the main Rails application, this is typically a node on which you're
also running Unicorn/Puma and/or Sidekiq.

Example output:

```plaintext
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]
```

### Storing configuration files

The [backup Rake task](#back-up-gitlab) GitLab provides
does **not** store your configuration files. The primary reason for this is that your
database contains encrypted information for two-factor authentication, the CI/CD
'secure variables', and so on. Storing encrypted information along with its key in the
same place defeats the purpose of using encryption in the first place.

CAUTION: **Warning:**
The secrets file is essential to preserve your database encryption key.

At the very **minimum**, you must backup:

For Omnibus:

- `/etc/gitlab/gitlab-secrets.json`
- `/etc/gitlab/gitlab.rb`

For installation from source:

- `/home/git/gitlab/config/secrets.yml`
- `/home/git/gitlab/config/gitlab.yml`

For [Docker installations](https://docs.gitlab.com/omnibus/docker/), you must
back up the volume where the configuration files are stored. If you have created
the GitLab container according to the documentation, it should be under
`/srv/gitlab/config`.

For [GitLab Helm chart Installations](https://gitlab.com/gitlab-org/charts/gitlab) on a
Kubernetes cluster, you must follow the [Backup the secrets](https://docs.gitlab.com/charts/backup-restore/backup.html#backup-the-secrets) instructions.

You may also want to back up any TLS keys and certificates, and your
[SSH host keys](https://superuser.com/questions/532040/copy-ssh-keys-from-one-server-to-another-server/532079#532079).

If you use Omnibus GitLab, see some additional information
[to backup your configuration](https://docs.gitlab.com/omnibus/settings/backups.html).

In the unlikely event that the secrets file is lost, see the
[troubleshooting section](#when-the-secrets-file-is-lost).

### Backup options

The command line tool GitLab provides to backup your instance can take more options.

#### Backup strategy option

> [Introduced](https://gitlab.com/gitlab-org/gitlab-foss/-/merge_requests/8728) in GitLab 8.17.

The default backup strategy is to essentially stream data from the respective
data locations to the backup using the Linux command `tar` and `gzip`. This works
fine in most cases, but can cause problems when data is rapidly changing.

When data changes while `tar` is reading it, the error `file changed as we read
it` may occur, and will cause the backup process to fail. To combat this, 8.17
introduces a new backup strategy called `copy`. The strategy copies data files
to a temporary location before calling `tar` and `gzip`, avoiding the error.

A side-effect is that the backup process will take up to an additional 1X disk
space. The process does its best to clean up the temporary files at each stage
so the problem doesn't compound, but it could be a considerable change for large
installations. This is why the `copy` strategy is not the default in 8.17.

To use the `copy` strategy instead of the default streaming strategy, specify
`STRATEGY=copy` in the Rake task command. For example:

```shell
sudo gitlab-backup create STRATEGY=copy
```

NOTE: **Note:**
For GitLab 12.1 and earlier, use `gitlab-rake gitlab:backup:create`.

#### Backup filename

CAUTION: **Warning:**
If you use a custom backup filename, you will not be able to
[limit the lifetime of the backups](#limit-backup-lifetime-for-local-files-prune-old-backups).

By default a backup file is created according to the specification in [the Backup timestamp](#backup-timestamp) section above. You can however override the `[TIMESTAMP]` part of the filename by setting the `BACKUP` environment variable. For example:

```shell
sudo gitlab-backup create BACKUP=dump
```

NOTE: **Note:**
For GitLab 12.1 and earlier, use `gitlab-rake gitlab:backup:create`.

The resulting file will then be `dump_gitlab_backup.tar`. This is useful for systems that make use of rsync and incremental backups, and will result in considerably faster transfer speeds.

#### Rsyncable

To make sure the generated archive is intelligently transferable by rsync, the `GZIP_RSYNCABLE=yes` option can be set. This will set the `--rsyncable` option to `gzip`. This is only useful in combination with setting [the Backup filename option](#backup-filename).

Note that the `--rsyncable` option in `gzip` is not guaranteed to be available on all distributions. To verify that it is available in your distribution you can run `gzip --help` or consult the man pages.

```shell
sudo gitlab-backup create BACKUP=dump GZIP_RSYNCABLE=yes
```

NOTE: **Note:**
For GitLab 12.1 and earlier, use `gitlab-rake gitlab:backup:create`.

#### Excluding specific directories from the backup

You can choose what should be exempt from the backup up by adding the environment variable `SKIP`.
The available options are:

- `db` (database)
- `uploads` (attachments)
- `repositories` (Git repositories data)
- `builds` (CI job output logs)
- `artifacts` (CI job artifacts)
- `lfs` (LFS objects)
- `registry` (Container Registry images)
- `pages` (Pages content)

Use a comma to specify several options at the same time:

All wikis will be backed up as part of the `repositories` group. Non-existent wikis
will be skipped during a backup.

For Omnibus GitLab packages:

```shell
sudo gitlab-backup create SKIP=db,uploads
```

NOTE: **Note:**
For GitLab 12.1 and earlier, use `gitlab-rake gitlab:backup:create`.

For installations from source:

```shell
sudo -u git -H bundle exec rake gitlab:backup:create SKIP=db,uploads RAILS_ENV=production
```

#### Skipping tar creation

The last part of creating a backup is generation of a `.tar` file containing
all the parts. In some cases (for example, if the backup is picked up by other
backup software) creating a `.tar` file might be wasted effort or even directly
harmful, so you can skip this step by adding `tar` to the `SKIP` environment
variable.

Adding `tar` to the `SKIP` variable leaves the files and directories containing the
backup in the directory used for the intermediate files. These files will be
overwritten when a new backup is created, so you should make sure they are copied
elsewhere, because you can only have one backup on the system.

For Omnibus GitLab packages:

```shell
sudo gitlab-backup create SKIP=tar
```

For installations from source:

```shell
sudo -u git -H bundle exec rake gitlab:backup:create SKIP=tar RAILS_ENV=production
```

#### Disabling prompts during restore

During a restore from backup, the restore script may ask for confirmation before
proceeding. If you wish to disable these prompts, you can set the `GITLAB_ASSUME_YES`
environment variable to `1`.

For Omnibus GitLab packages:

```shell
sudo GITLAB_ASSUME_YES=1 gitlab-backup restore
```

For installations from source:

```shell
sudo -u git -H GITLAB_ASSUME_YES=1 bundle exec rake gitlab:backup:restore RAILS_ENV=production
```

#### Back up Git repositories concurrently

> [Introduced](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/37158) in GitLab 13.3.

Repositories can be backed up concurrently to help fully utilise CPU time. The following variables
are available to modify the default behavior of the Rake task:

- `GITLAB_BACKUP_MAX_CONCURRENCY` sets the maximum number of projects to backup at the same time.
  Defaults to 1.
- `GITLAB_BACKUP_MAX_STORAGE_CONCURRENCY` sets the maximum number of projects to backup at the same time on each storage. This allows the repository backups to be spread across storages.
  Defaults to 1.

For example, for Omnibus GitLab installations:

```shell
sudo gitlab-backup create GITLAB_BACKUP_MAX_CONCURRENCY=4 GITLAB_BACKUP_MAX_STORAGE_CONCURRENCY=1
```

For example, for installations from source:

```shell
sudo -u git -H bundle exec rake gitlab:backup:create GITLAB_BACKUP_MAX_CONCURRENCY=4 GITLAB_BACKUP_MAX_STORAGE_CONCURRENCY=1
```

#### Uploading backups to a 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/). GitLab
[imports cloud drivers](https://gitlab.com/gitlab-org/gitlab/blob/30f5b9a5b711b46f1065baf755e413ceced5646b/Gemfile#L88)
for AWS, Google, OpenStack Swift, Rackspace, and Aliyun as well. A local driver is
[also available](#uploading-to-locally-mounted-shares).

[Read more about using object storage with GitLab](../administration/object_storage.md).

##### Using Amazon S3

For Omnibus GitLab packages:

1. Add the following to `/etc/gitlab/gitlab.rb`:

   ```ruby
   gitlab_rails['backup_upload_connection'] = {
     'provider' => 'AWS',
     'region' => 'eu-west-1',
     'aws_access_key_id' => 'AKIAKIAKI',
     'aws_secret_access_key' => 'secret123'
     # If using an IAM Profile, don't configure aws_access_key_id & aws_secret_access_key
     # 'use_iam_profile' => true
   }
   gitlab_rails['backup_upload_remote_directory'] = 'my.s3.bucket'
   ```

1. [Reconfigure GitLab](../administration/restart_gitlab.md#omnibus-gitlab-reconfigure) for the changes to take effect

##### Digital Ocean Spaces

This example can be used for a bucket in Amsterdam (AMS3).

1. Add the following to `/etc/gitlab/gitlab.rb`:

   ```ruby
   gitlab_rails['backup_upload_connection'] = {
     'provider' => 'AWS',
     'region' => 'ams3',
     'aws_access_key_id' => 'AKIAKIAKI',
     'aws_secret_access_key' => 'secret123',
     'endpoint'              => 'https://ams3.digitaloceanspaces.com'
   }
   gitlab_rails['backup_upload_remote_directory'] = 'my.s3.bucket'
   ```

1. [Reconfigure GitLab](../administration/restart_gitlab.md#omnibus-gitlab-reconfigure) for the changes to take effect

NOTE: **Note:**
If you see `400 Bad Request` by using Digital Ocean Spaces, the cause may be the
usage of backup encryption. Remove or comment the line that
contains `gitlab_rails['backup_encryption']` since Digital Ocean Spaces
doesn't support encryption.

##### Other S3 Providers

Not all S3 providers are fully-compatible with the Fog library. For example,
if you see `411 Length Required` errors after attempting to upload, you may
need to downgrade the `aws_signature_version` value from the default value to
2 [due to this issue](https://github.com/fog/fog-aws/issues/428).

For installations from source:

1. Edit `home/git/gitlab/config/gitlab.yml`:

   ```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'
           # If using an IAM Profile, leave aws_access_key_id & aws_secret_access_key empty
           # ie. aws_access_key_id: ''
           # use_iam_profile: 'true'
         # The remote 'directory' to store your backups. For S3, this would be the bucket name.
         remote_directory: 'my.s3.bucket'
         # Turns on AWS Server-Side Encryption with Amazon S3-Managed Keys for backups, this is optional
         # encryption: 'AES256'
         # Turns on AWS Server-Side Encryption with Amazon Customer-Provided Encryption Keys for backups, this is optional
         #   This should be set to the encryption key for Amazon S3 to use to encrypt or decrypt your data.
         #   'encryption' must also be set in order for this to have any effect.
         #   To avoid storing the key on disk, the key can also be specified via the `GITLAB_BACKUP_ENCRYPTION_KEY` environment variable.
         # encryption_key: '<key>'
         # Specifies Amazon S3 storage class to use for backups, this is optional
         # storage_class: 'STANDARD'
   ```

1. [Restart GitLab](../administration/restart_gitlab.md#installations-from-source) for the changes to take effect

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"
      ]
    }
  ]
}
```

##### Using Google Cloud Storage

If you want to use Google Cloud Storage to save backups, you'll have to create
an access key from the Google console first:

1. Go to the storage settings page <https://console.cloud.google.com/storage/settings>
1. Select "Interoperability" and create an access key
1. Make note of the "Access Key" and "Secret" and replace them in the
   configurations below
1. In the buckets advanced settings ensure the Access Control option "Set object-level
   and bucket-level permissions" is selected
1. Make sure you already have a bucket created

For Omnibus GitLab packages:

1. Edit `/etc/gitlab/gitlab.rb`:

   ```ruby
   gitlab_rails['backup_upload_connection'] = {
     'provider' => 'Google',
     'google_storage_access_key_id' => 'Access Key',
     'google_storage_secret_access_key' => 'Secret',

     ## If you have CNAME buckets (foo.example.com), you might run into SSL issues
     ## when uploading backups ("hostname foo.example.com.storage.googleapis.com
     ## does not match the server certificate"). In that case, uncomnent the following
     ## setting. See: https://github.com/fog/fog/issues/2834
     #'path_style' => true
   }
   gitlab_rails['backup_upload_remote_directory'] = 'my.google.bucket'
   ```

1. [Reconfigure GitLab](../administration/restart_gitlab.md#omnibus-gitlab-reconfigure) for the changes to take effect

For installations from source:

1. Edit `home/git/gitlab/config/gitlab.yml`:

   ```yaml
     backup:
       upload:
         connection:
           provider: 'Google'
           google_storage_access_key_id: 'Access Key'
           google_storage_secret_access_key: 'Secret'
         remote_directory: 'my.google.bucket'
   ```

1. [Restart GitLab](../administration/restart_gitlab.md#installations-from-source) for the changes to take effect

##### Using Azure Blob storage

> [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/25877) in GitLab 13.4.

For Omnibus GitLab packages:

1. Edit `/etc/gitlab/gitlab.rb`:

   ```ruby
   gitlab_rails['backup_upload_connection'] = {
    'provider' => 'AzureRM',
    'azure_storage_account_name' => '<AZURE STORAGE ACCOUNT NAME>',
    'azure_storage_access_key' => '<AZURE STORAGE ACCESS KEY>',
    'azure_storage_domain' => 'blob.core.windows.net', # Optional
   }
   gitlab_rails['backup_upload_remote_directory'] = '<AZURE BLOB CONTAINER>'
   ```

1. [Reconfigure GitLab](../administration/restart_gitlab.md#omnibus-gitlab-reconfigure) for the changes to take effect

For installations from source:

1. Edit `home/git/gitlab/config/gitlab.yml`:

   ```yaml
     backup:
       upload:
         connection:
           provider: 'AzureRM'
           azure_storage_account_name: '<AZURE STORAGE ACCOUNT NAME>'
           azure_storage_access_key: '<AZURE STORAGE ACCESS KEY>'
         remote_directory: '<AZURE BLOB CONTAINER>'
   ```

1. [Restart GitLab](../administration/restart_gitlab.md#installations-from-source) for the changes to take effect

See [the table of Azure parameters](../administration/object_storage.md#azure-blob-storage) for more details.

##### Specifying a custom directory for backups

Note: This option only works for remote storage. If you want to group your backups
you can pass a `DIRECTORY` environment variable:

```shell
sudo gitlab-backup create DIRECTORY=daily
sudo gitlab-backup create DIRECTORY=weekly
```

NOTE: **Note:**
For GitLab 12.1 and earlier, use `gitlab-rake gitlab:backup:create`.

#### Uploading to locally mounted shares

You may also send backups to a mounted share (for example, `NFS`,`CIFS`, or `SMB`) by
using the Fog [`Local`](https://github.com/fog/fog-local#usage) storage provider.
The directory pointed to by the `local_root` key **must** be owned by the `git`
user **when mounted** (mounting with the `uid=` of the `git` user for `CIFS` and
`SMB`) or the user that you are executing the backup tasks under (for Omnibus
packages, this is the `git` user).

The `backup_upload_remote_directory` **must** be set in addition to the
`local_root` key. This is the sub directory inside the mounted directory that
backups will be copied to, and will be created if it does not exist. If the
directory that you want to copy the tarballs to is the root of your mounted
directory, just use `.` instead.

NOTE: **Note:**
Since file system performance may affect GitLab's overall performance, we do not recommend using EFS for storage. See the [relevant documentation](../administration/nfs.md#avoid-using-awss-elastic-file-system-efs) for more details.

For Omnibus GitLab packages:

1. Edit `/etc/gitlab/gitlab.rb`:

   ```ruby
   gitlab_rails['backup_upload_connection'] = {
     :provider => 'Local',
     :local_root => '/mnt/backups'
   }

   # The directory inside the mounted folder to copy backups to
   # Use '.' to store them in the root directory
   gitlab_rails['backup_upload_remote_directory'] = 'gitlab_backups'
   ```

1. [Reconfigure GitLab](../administration/restart_gitlab.md#omnibus-gitlab-reconfigure) for the changes to take effect.

For installations from source:

1. Edit `home/git/gitlab/config/gitlab.yml`:

   ```yaml
   backup:
     upload:
       # Fog storage connection settings, see http://fog.io/storage/ .
       connection:
         provider: Local
         local_root: '/mnt/backups'
       # The directory inside the mounted folder to copy backups to
       # Use '.' to store them in the root directory
       remote_directory: 'gitlab_backups'
   ```

1. [Restart GitLab](../administration/restart_gitlab.md#installations-from-source) for the changes to take effect.

#### Backup archive permissions

The backup archives created by GitLab (`1393513186_2014_02_27_gitlab_backup.tar`)
will have owner/group `git`/`git` and 0600 permissions by default.
This is meant to avoid other system users reading GitLab's data.
If you need the backup archives to have different permissions you can use the 'archive_permissions' setting.

For Omnibus GitLab packages:

1. Edit `/etc/gitlab/gitlab.rb`:

   ```ruby
   gitlab_rails['backup_archive_permissions'] = 0644 # Makes the backup archives world-readable
   ```

1. [Reconfigure GitLab](../administration/restart_gitlab.md#omnibus-gitlab-reconfigure) for the changes to take effect.

For installations from source:

1. Edit `/home/git/gitlab/config/gitlab.yml`:

   ```yaml
   backup:
     archive_permissions: 0644 # Makes the backup archives world-readable
   ```

1. [Restart GitLab](../administration/restart_gitlab.md#installations-from-source) for the changes to take effect.

#### Configuring cron to make daily backups

CAUTION: **Warning:**
The following cron jobs do not [backup your GitLab configuration files](#storing-configuration-files)
or [SSH host keys](https://superuser.com/questions/532040/copy-ssh-keys-from-one-server-to-another-server/532079#532079).

You can schedule a cron job that backs up your repositories and GitLab metadata.

For Omnibus GitLab packages:

1. Edit the crontab for the `root` user:

   ```shell
   sudo su -
   crontab -e
   ```

1. There, add the following line to schedule the backup for everyday at 2 AM:

   ```plaintext
   0 2 * * * /opt/gitlab/bin/gitlab-backup create CRON=1
   ```

   NOTE: **Note:**
   For GitLab 12.1 and earlier, use `gitlab-rake gitlab:backup:create`.

For installations from source:

1. Edit the crontab for the `git` user:

   ```shell
   sudo -u git crontab -e
   ```

1. Add the following lines at the bottom:

   ```plaintext
   # Create a full backup of the GitLab repositories and SQL database every day at 2am
   0 2 * * * cd /home/git/gitlab && PATH=/usr/local/bin:/usr/bin:/bin bundle exec rake gitlab:backup:create RAILS_ENV=production CRON=1
   ```

NOTE: **Note:**
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.

### Limit backup lifetime for local files (prune old backups)

CAUTION: **Warning:**
This will not work if you have used a [custom filename](#backup-filename)
for your backups.

NOTE: **Note:**
This configuration option only manages local files. GitLab does not automatically
prune old files stored in a third-party [object storage](#uploading-backups-to-a-remote-cloud-storage)
because the user may not have permission to list and delete files. It is
recommended that you configure the appropriate retention policy for your object
storage (for example, [AWS S3](https://docs.aws.amazon.com/AmazonS3/latest/user-guide/create-lifecycle.html)).

You may want to set a limited lifetime for backups to prevent regular
backups using all your disk space. The next time the backup task is run, backups older than the `backup_keep_time` will be pruned.

For Omnibus GitLab packages:

1. Edit `/etc/gitlab/gitlab.rb`:

   ```ruby
   ## Limit backup lifetime to 7 days - 604800 seconds
   gitlab_rails['backup_keep_time'] = 604800
   ```

1. [Reconfigure GitLab](../administration/restart_gitlab.md#omnibus-gitlab-reconfigure) for the changes to take effect.

For installations from source:

1. Edit `/home/git/gitlab/config/gitlab.yml`:

   ```yaml
   backup:
     ## Limit backup lifetime to 7 days - 604800 seconds
     keep_time: 604800
   ```

1. [Restart GitLab](../administration/restart_gitlab.md#installations-from-source) for the changes to take effect.

## Restore GitLab

GitLab provides a simple command line interface to restore your whole installation,
and is flexible enough to fit your needs.

The [restore prerequisites section](#restore-prerequisites) includes crucial
information. Make sure to read and test the whole restore process at least once
before attempting to perform it in a production environment.

You can only restore a backup to **exactly the same version and type (CE/EE)** of
GitLab that you created it on, for example CE 9.1.0.

If your backup is a different version than the current installation, you will
need to [downgrade your GitLab installation](https://docs.gitlab.com/omnibus/update/README.html#downgrade)
before restoring the backup.

### Restore prerequisites

You need to have a working GitLab installation before you can perform
a restore. This is mainly because the system user performing the
restore actions (`git`) is usually not allowed to create or delete
the SQL database it needs to import data into (`gitlabhq_production`).
All existing data will be either erased (SQL) or moved to a separate
directory (repositories, uploads).

To restore a backup, you will also need to restore `/etc/gitlab/gitlab-secrets.json`
(for Omnibus packages) or `/home/git/gitlab/.secret` (for installations
from source). This file contains the database encryption key,
[CI/CD variables](../ci/variables/README.md#gitlab-cicd-environment-variables), and
variables used for [two-factor authentication](../user/profile/account/two_factor_authentication.md).
If you fail to restore this encryption key file along with the application data
backup, users with two-factor authentication enabled and GitLab Runner will
lose access to your GitLab server.

You may also want to restore any TLS keys, certificates, or [SSH host keys](https://superuser.com/questions/532040/copy-ssh-keys-from-one-server-to-another-server/532079#532079).

Starting with GitLab 12.9 if an untarred backup (like the ones made with
`SKIP=tar`) is found, and no backup is chosen with `BACKUP=<timestamp>`, the
untarred backup is used.

Depending on your case, you might want to run the restore command with one or
more of the following options:

- `BACKUP=timestamp_of_backup` - Required if more than one backup exists.
  Read what the [backup timestamp is about](#backup-timestamp).
- `force=yes` - Does not ask if the authorized_keys file should get regenerated and assumes 'yes' for warning that database tables will be removed, enabling the "Write to authorized_keys file" setting, and updating LDAP providers.

If you are restoring into directories that are mount points, you will need to make
sure these directories are empty before attempting a restore. Otherwise GitLab
will attempt to move these directories before restoring the new data and this
would cause an error.

Read more on [configuring NFS mounts](../administration/nfs.md)

### Restore for installation from source

```shell
# Stop processes that are connected to the database
sudo service gitlab stop

bundle exec rake gitlab:backup:restore RAILS_ENV=production
```

Example output:

```plaintext
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]
- Object pool 1 ...
Deleting tmp directories...[DONE]
```

Next, restore `/home/git/gitlab/.secret` if necessary as mentioned above.

Restart GitLab:

```shell
sudo service gitlab restart
```

### Restore for Omnibus GitLab installations

This procedure assumes that:

- You have installed the **exact same version and type (CE/EE)** of GitLab
  Omnibus with which the backup was created.
- You have run `sudo gitlab-ctl reconfigure` at least once.
- GitLab is running. If not, start it using `sudo gitlab-ctl start`.

First make sure your backup tar file is in the backup directory described in the
`gitlab.rb` configuration `gitlab_rails['backup_path']`. The default is
`/var/opt/gitlab/backups`. It needs to be owned by the `git` user.

```shell
sudo cp 11493107454_2018_04_25_10.6.4-ce_gitlab_backup.tar /var/opt/gitlab/backups/
sudo chown git.git /var/opt/gitlab/backups/11493107454_2018_04_25_10.6.4-ce_gitlab_backup.tar
```

Stop the processes that are connected to the database. Leave the rest of GitLab
running:

```shell
sudo gitlab-ctl stop unicorn
sudo gitlab-ctl stop puma
sudo gitlab-ctl stop sidekiq
# Verify
sudo gitlab-ctl status
```

Next, restore the backup, specifying the timestamp of the backup you wish to
restore:

```shell
# This command will overwrite the contents of your GitLab database!
sudo gitlab-backup restore BACKUP=11493107454_2018_04_25_10.6.4-ce
```

NOTE: **Note:**
For GitLab 12.1 and earlier, use `gitlab-rake gitlab:backup:restore`.

CAUTION: **Warning:**
`gitlab-rake gitlab:backup:restore` does not set the right file system permissions on your Registry directory.
This is a [known issue](https://gitlab.com/gitlab-org/gitlab-foss/-/issues/62759). On GitLab 12.2 or newer, you can
use `gitlab-backup restore` to avoid this issue.

Next, restore `/etc/gitlab/gitlab-secrets.json` if necessary as mentioned above.

Reconfigure, restart and check GitLab:

```shell
sudo gitlab-ctl reconfigure
sudo gitlab-ctl restart
sudo gitlab-rake gitlab:check SANITIZE=true
```

If there is a GitLab version mismatch between your backup tar file and the installed
version of GitLab, the restore command will abort with an error. Install the
[correct GitLab version](https://packages.gitlab.com/gitlab/) and try again.

NOTE: **Note:**
There is currently a [known issue](https://gitlab.com/gitlab-org/omnibus-gitlab/-/issues/3470) for restore not working
with `pgbouncer`. In order to workaround the issue, the Rails node will need to bypass `pgbouncer` and connect
directly to the primary database node. This can be done by setting `gitlab_rails['db_host']` and `gitlab_rails['port']`
to connect to the primary database node and [reconfiguring GitLab](../administration/restart_gitlab.md#omnibus-gitlab-reconfigure).

### Restore for Docker image and GitLab Helm chart installations

For GitLab installations using the Docker image or the GitLab Helm chart on
a Kubernetes cluster, the 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:

```shell
# Stop the processes that are connected to the database
docker exec -it <name of container> gitlab-ctl stop unicorn
docker exec -it <name of container> gitlab-ctl stop puma
docker exec -it <name of container> gitlab-ctl stop sidekiq

# Verify that the processes are all down before continuing
docker exec -it <name of container> gitlab-ctl status

# Run the restore
docker exec -it <name of container> gitlab-backup restore BACKUP=11493107454_2018_04_25_10.6.4-ce

# Restart the GitLab container
docker restart <name of container>

# Check GitLab
docker exec -it <name of container> gitlab-rake gitlab:check SANITIZE=true
```

NOTE: **Note:**
For GitLab 12.1 and earlier, use `gitlab-rake gitlab:backup:restore`.

CAUTION: **Warning:**
`gitlab-rake gitlab:backup:restore` does not set the right file system permissions on your Registry directory.
This is a [known issue](https://gitlab.com/gitlab-org/gitlab-foss/-/issues/62759). On GitLab 12.2 or newer, you can
use `gitlab-backup restore` to avoid this issue.

The GitLab Helm chart uses a different process, documented in
[restoring a GitLab Helm chart installation](https://gitlab.com/gitlab-org/charts/gitlab/blob/master/doc/backup-restore/restore.md).

### Restoring only one or a few project(s) or group(s) from a backup

While the Rake task used to restore a GitLab instance doesn't support
restoring a single project or group, you can use a workaround by
restoring your backup to a separate, temporary GitLab instance, and
export your project or group from there:

1. [Install a new GitLab](../install/README.md) instance at the same version as
   the backed-up instance from which you want to restore.
1. [Restore the backup](#restore-gitlab) into this new instance and
   export your [project](../user/project/settings/import_export.md)
   or [group](../user/group/settings/import_export.md). Make sure to
   read the **Important Notes** on either export feature's documentation
   to understand what will be exported and what not.
1. Once the export is complete, go to the old instance and import it.
1. After importing only the project(s) or group(s) that you wanted is complete,
   you may delete the new, temporary GitLab instance.

NOTE: **Note:**
A feature request to provide direct restore of individual projects or groups
is being discussed in [issue #17517](https://gitlab.com/gitlab-org/gitlab/-/issues/17517).

## 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: Amazon 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 PostgreSQL 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 using 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 PostgreSQL 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.

## Additional notes

This documentation is for GitLab Community and Enterprise Edition. We backup
GitLab.com and make sure your data is secure, but you can't use these methods
to export / backup your data yourself from GitLab.com.

Issues are stored in the database. They can't be stored in Git itself.

To migrate your repositories from one server to another with an up-to-date version of
GitLab, you can use the [import Rake task](import.md) to do a mass import of the
repository. Note that if you do an import Rake task, rather than a backup restore, you
will have all your repositories, but not any other data.

## Troubleshooting

The following are possible problems you might encounter with possible solutions.

### Restoring database backup using Omnibus packages outputs warnings

If you are using backup restore procedures you might encounter the following warnings:

```plaintext
psql:/var/opt/gitlab/backups/db/database.sql:22: ERROR:  must be owner of extension plpgsql
psql:/var/opt/gitlab/backups/db/database.sql:2931: WARNING:  no privileges could be revoked for "public" (two occurrences)
psql:/var/opt/gitlab/backups/db/database.sql:2933: WARNING:  no privileges were granted for "public" (two occurrences)
```

Be advised that, backup is successfully restored in spite of these warnings.

The Rake task runs this as the `gitlab` user which does not have the superuser access to the database. When restore is initiated it will also run as `gitlab` user but it will also try to alter the objects it does not have access to.
Those objects have no influence on the database backup/restore but they give this annoying warning.

For more information see similar questions on PostgreSQL issue tracker [here](https://www.postgresql.org/message-id/201110220712.30886.adrian.klaver@gmail.com) and [here](https://www.postgresql.org/message-id/2039.1177339749@sss.pgh.pa.us) as well as [stack overflow](https://stackoverflow.com/questions/4368789/error-must-be-owner-of-language-plpgsql).

### When the secrets file is lost

If you have failed to [back up the secrets file](#storing-configuration-files), you'll
need to perform a number of steps to get GitLab working properly again.

The secrets file is responsible for storing the encryption key for several
columns containing sensitive information. If the key is lost, GitLab will be
unable to decrypt those columns. This will break a wide range of functionality,
including (but not restricted to):

- [CI/CD variables](../ci/variables/README.md)
- [Kubernetes / GCP integration](../user/project/clusters/index.md)
- [Custom Pages domains](../user/project/pages/custom_domains_ssl_tls_certification/index.md)
- [Project error tracking](../operations/error_tracking.md)
- [Runner authentication](../ci/runners/README.md)
- [Project mirroring](../user/project/repository/repository_mirroring.md)
- [Web hooks](../user/project/integrations/webhooks.md)

In cases like CI/CD variables and runner authentication, you might
experience some unexpected behavior such as:

- Stuck jobs.
- 500 errors.

In this case, you are required to reset all the tokens for CI/CD variables
and runner authentication, which is described in more detail below. After
resetting the tokens, you should be able to visit your project and the jobs
will have started running again. Use the information in the following sections at your own risk.

#### Check for undecryptable values

You can check whether you have undecryptable values in the database using
the [Secrets Doctor Rake task](../administration/raketasks/doctor.md).

#### Take a backup

You will need to directly modify GitLab data to work around your lost secrets file.

CAUTION: **Warning:**
Make sure you've taken a backup beforehand, particularly a full database backup.

#### Disable user two-factor authentication (2FA)

Users with 2FA enabled will not be able to log into GitLab. In that case,
you need to [disable 2FA for everyone](../security/two_factor_authentication.md#disabling-2fa-for-everyone)
and then users will have to reactivate 2FA from scratch.

#### Reset CI/CD variables

1. Enter the DB console:

   For Omnibus GitLab packages:

   ```shell
   sudo gitlab-rails dbconsole
   ```

   For installations from source:

   ```shell
   sudo -u git -H bundle exec rails dbconsole -e production
   ```

1. Check the `ci_group_variables` and `ci_variables` tables:

   ```sql
   SELECT * FROM public."ci_group_variables";
   SELECT * FROM public."ci_variables";
   ```

   Those are the variables that you need to delete.

1. Drop the table:

   ```sql
   DELETE FROM ci_group_variables;
   DELETE FROM ci_variables;
   ```

1. You may need to reconfigure or restart GitLab for the changes to take
   effect.

#### Reset runner registration tokens

1. Enter the DB console:

   For Omnibus GitLab packages:

   ```shell
   sudo gitlab-rails dbconsole
   ```

   For installations from source:

   ```shell
   sudo -u git -H bundle exec rails dbconsole -e production
   ```

1. Clear all the tokens for projects, groups, and the whole instance:

   CAUTION: **Caution:**
   The last UPDATE operation will stop the runners being able to pick up
   new jobs. You must register new runners.

   ```sql
   -- Clear project tokens
   UPDATE projects SET runners_token = null, runners_token_encrypted = null;
   -- Clear group tokens
   UPDATE namespaces SET runners_token = null, runners_token_encrypted = null;
   -- Clear instance tokens
   UPDATE application_settings SET runners_registration_token_encrypted = null;
   -- Clear runner tokens
   UPDATE ci_runners SET token = null, token_encrypted = null;
   ```

#### Reset pending pipeline jobs

1. Enter the DB console:

   For Omnibus GitLab packages:

   ```shell
   sudo gitlab-rails dbconsole
   ```

   For installations from source:

   ```shell
   sudo -u git -H bundle exec rails dbconsole -e production
   ```

1. Clear all the tokens for pending jobs:

   ```sql
   -- Clear build tokens
   UPDATE ci_builds SET token = null, token_encrypted = null;
   ```

A similar strategy can be employed for the remaining features - by removing the
data that cannot be decrypted, GitLab can be brought back into working order,
and the lost data can be manually replaced.

#### Fix project integrations

If you've lost your secrets, the
[projects' integrations settings pages](../user/project/integrations/index.md)
are probably generating 500 errors.

The fix is to truncate the `web_hooks` table:

1. Enter the DB console:

   For Omnibus GitLab packages:

   ```shell
   sudo gitlab-rails dbconsole
   ```

   For installations from source:

   ```shell
   sudo -u git -H bundle exec rails dbconsole -e production
   ```

1. Truncate the table

   ```sql
   -- truncate web_hooks table
   TRUNCATE web_hooks CASCADE;
   ```

### Container Registry push failures after restoring from a backup

If you use the [Container Registry](../user/packages/container_registry/index.md), you
may see pushes to the registry fail after restoring your backup on an Omnibus
GitLab instance after restoring the registry data.

These failures will mention permission issues in the registry logs, like:

```plaintext
level=error
msg="response completed with error"
err.code=unknown
err.detail="filesystem: mkdir /var/opt/gitlab/gitlab-rails/shared/registry/docker/registry/v2/repositories/...: permission denied"
err.message="unknown error"
```

This is caused by the restore being run as the unprivileged user `git` which was
unable to assign the correct ownership to the registry files during the restore
([issue 62759](https://gitlab.com/gitlab-org/gitlab-foss/-/issues/62759 "Incorrect permissions on registry filesystem after restore")).

To get your registry working again:

```shell
sudo chown -R registry:registry /var/opt/gitlab/gitlab-rails/shared/registry/docker
```

NOTE: **Note:**
If you have changed the default filesystem location for the registry, you will
want to run the `chown` against your custom location instead of
`/var/opt/gitlab/gitlab-rails/shared/registry/docker`.

### Backup fails to complete with Gzip error

While running the backup, you may receive a Gzip error:

```shell
sudo /opt/gitlab/bin/gitlab-backup create
...
Dumping ...
...
gzip: stdout: Input/output error

Backup failed
```

If this happens, check the following:

1. Confirm there is sufficient disk space for the Gzip operation.
1. If NFS is being used, check if the mount option `timeout` is set. The default is `600`, and changing this to smaller values have resulted in this error.