GitLab: Backup to S3

Configure Git
# /etc/gitlab/gitlab.rb
gitlab_rails['backup_upload_connection'] = {
'provider' => 'AWS',
'region' => 'ew-west-1',
'aws_access_key_id' => 'KEY123',
'aws_secret_access_key' => 'PASS124',
'endpoint' => 'https://s3.example.com'
}
gitlab_rails['backup_upload_remote_directory'] = 'backups'

gitlab-ctl reconfigure

Test
gitlab-rake gitlab:backup:create

Configure periodic backup
# crontab -e
0 2 * * * /opt/gitlab/bin/gitlab-rake gitlab:backup:create CRON=1

Links
https://docs.gitlab.com/ce/raketasks/backup_restore.html#uploading-backups-to-a-remote-cloud-storage