426 lines
16 KiB
Markdown
426 lines
16 KiB
Markdown
# 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. The best way to migrate your repositories from one server to
|
|
another is through backup restore.
|
|
|
|
You need to keep a separate copy of `/etc/gitlab/gitlab-secrets.json`
|
|
(for omnibus packages) or `/home/git/gitlab/.secret` (for installations
|
|
from source). This file contains the database encryption key used
|
|
for two-factor authentication. If you restore a GitLab backup without
|
|
restoring the database encryption key, users who have two-factor
|
|
authentication enabled will lose access to your GitLab server.
|
|
|
|
```
|
|
# 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
|
|
sudo -u git -H bundle exec rake gitlab:backup:create RAILS_ENV=production
|
|
```
|
|
|
|
Also you can choose what should be backed up by adding environment variable SKIP. Available options: db,
|
|
uploads (attachments), repositories, builds(CI build output logs), artifacts (CI build artifacts), lfs (LFS objects).
|
|
Use a comma to specify several options at the same time.
|
|
|
|
```
|
|
sudo gitlab-rake gitlab:backup:create SKIP=db,uploads
|
|
```
|
|
|
|
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'
|
|
# Turns on AWS Server-Side Encryption with Amazon S3-Managed Keys for backups, this is optional
|
|
# encryption: 'AES256'
|
|
```
|
|
|
|
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"
|
|
]
|
|
}
|
|
]
|
|
}
|
|
```
|
|
|
|
### Uploading to locally mounted shares
|
|
|
|
You may also send backups to a mounted share (`NFS` / `CIFS` / `SMB` / etc.) by
|
|
using the [`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.
|
|
|
|
For omnibus packages:
|
|
|
|
```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'
|
|
```
|
|
|
|
For installations from source:
|
|
|
|
```yaml
|
|
backup:
|
|
# snip
|
|
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'
|
|
```
|
|
|
|
## Backup archive permissions
|
|
|
|
The backup archives created by GitLab (123456_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.
|
|
|
|
```
|
|
# In /etc/gitlab/gitlab.rb, for omnibus packages
|
|
gitlab_rails['backup_archive_permissions'] = 0644 # Makes the backup archives world-readable
|
|
```
|
|
|
|
```
|
|
# In gitlab.yml, for installations from source:
|
|
backup:
|
|
archive_permissions: 0644 # Makes the backup archives world-readable
|
|
```
|
|
|
|
## Storing configuration files
|
|
|
|
Please be informed that a backup does not store your configuration
|
|
files. One reason for this is that your database contains encrypted
|
|
information for two-factor authentication. Storing encrypted
|
|
information along with its key in the same place defeats the purpose
|
|
of using encryption in the first place!
|
|
|
|
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 an installation from source, please consider backing up your `.secret` file, `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).
|
|
|
|
At the very **minimum** you should backup `/etc/gitlab/gitlab-secrets.json`
|
|
(Omnibus) or `/home/git/gitlab/.secret` (source) to preserve your
|
|
database encryption key.
|
|
|
|
## 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.
|
|
|
|
### 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).
|
|
|
|
If some or all of your GitLab users are using two-factor authentication
|
|
(2FA) then you must also make sure to restore
|
|
`/etc/gitlab/gitlab-secrets.json` (Omnibus) or `/home/git/gitlab/.secret`
|
|
(installations from source). Note that you need to run `gitlab-ctl
|
|
reconfigure` after changing `gitlab-secrets.json`.
|
|
|
|
### Installation from source
|
|
|
|
```
|
|
# Stop processes that are connected to the database
|
|
sudo service gitlab stop
|
|
|
|
bundle exec rake gitlab:backup:restore RAILS_ENV=production
|
|
```
|
|
|
|
Options:
|
|
|
|
```
|
|
BACKUP=timestamp_of_backup (required if more than one backup exists)
|
|
force=yes (do not ask if the authorized_keys file should get regenerated)
|
|
```
|
|
|
|
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]
|
|
```
|
|
|
|
### Omnibus installations
|
|
|
|
We will assume that you have installed GitLab from an omnibus package and run
|
|
`sudo gitlab-ctl reconfigure` at least once.
|
|
|
|
First make sure your backup tar file is in `/var/opt/gitlab/backups` (or wherever `gitlab_rails['backup_path']` points to).
|
|
|
|
```shell
|
|
sudo cp 1393513186_gitlab_backup.tar /var/opt/gitlab/backups/
|
|
```
|
|
|
|
Next, restore the backup by running the restore command. You need to specify the
|
|
timestamp of the backup you are restoring.
|
|
|
|
```shell
|
|
# Stop processes that are connected to the database
|
|
sudo gitlab-ctl stop unicorn
|
|
sudo gitlab-ctl stop sidekiq
|
|
|
|
# This command will overwrite the contents of your GitLab database!
|
|
sudo gitlab-rake gitlab:backup:restore BACKUP=1393513186
|
|
|
|
# Start GitLab
|
|
sudo gitlab-ctl start
|
|
|
|
# Check GitLab
|
|
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 a package for
|
|
the [required version](https://www.gitlab.com/downloads/archives/) and try again.
|
|
|
|
## Configure cron to make daily backups
|
|
|
|
### For installation from source:
|
|
```
|
|
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.
|
|
|
|
### For omnibus installations
|
|
|
|
To schedule a cron job that backs up your repositories and GitLab metadata, use the root user:
|
|
|
|
```
|
|
sudo su -
|
|
crontab -e
|
|
```
|
|
|
|
There, add the following line to schedule the backup for everyday at 2 AM:
|
|
|
|
```
|
|
0 2 * * * /opt/gitlab/bin/gitlab-rake gitlab:backup:create CRON=1
|
|
```
|
|
|
|
You may also want to set a limited lifetime for backups to prevent regular
|
|
backups using all your disk space. To do this add the following lines to
|
|
`/etc/gitlab/gitlab.rb` and reconfigure:
|
|
|
|
```
|
|
# limit backup lifetime to 7 days - 604800 seconds
|
|
gitlab_rails['backup_keep_time'] = 604800
|
|
```
|
|
|
|
NOTE: This cron job does not [backup your omnibus-gitlab configuration](#backup-and-restore-omnibus-gitlab-configuration) or [SSH host keys](https://superuser.com/questions/532040/copy-ssh-keys-from-one-server-to-another-server/532079#532079).
|
|
|
|
## 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 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 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 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.
|
|
|
|
## Troubleshooting
|
|
|
|
### Restoring database backup using omnibus packages outputs warnings
|
|
If you are using backup restore procedures you might encounter the following warnings:
|
|
|
|
```
|
|
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](http://www.postgresql.org/message-id/201110220712.30886.adrian.klaver@gmail.com) and [here](http://www.postgresql.org/message-id/2039.1177339749@sss.pgh.pa.us) as well as [stack overflow](http://stackoverflow.com/questions/4368789/error-must-be-owner-of-language-plpgsql).
|
|
|
|
## Note
|
|
This documentation is for GitLab CE.
|
|
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.
|