gitlab-org--gitlab-foss/doc/administration/sidekiq.md

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Configure an external Sidekiq instance (FREE SELF)

You can configure an external Sidekiq instance by using the Sidekiq that's bundled in the GitLab package. Sidekiq requires connection to the Redis, PostgreSQL, and Gitaly instances.

Required configuration

To configure Sidekiq:

  1. SSH into the Sidekiq server.

  2. Download and install the Omnibus GitLab package using steps 1 and 2. Do not complete any other steps.

  3. Edit /etc/gitlab/gitlab.rb with the following information and make sure to replace with your values:

    ##
    ## To maintain uniformity of links across nodes, the
    ##`external_url` on the Sidekiq server should point to the external URL that users
    ## use to access GitLab. This can be either:
    ##
    ## - The `external_url` set on your application server.
    ## - The URL of a external load balancer, which routes traffic to the GitLab application server.
    ##
    
    external_url 'https://gitlab.example.com'
    
    ## Prevent database migrations from running on upgrade automatically
    gitlab_rails['auto_migrate'] = false
    
    ########################################
    #####        Services Disabled       ###
    ########################################
    #
    # When running GitLab on just one server, you have a single `gitlab.rb`
    # to enable all services you want to run.
    # When running GitLab on N servers, you have N `gitlab.rb` files.
    # Enable only the services you want to run on each
    # specific server, while disabling all others.
    #
    nginx['enable'] = false
    grafana['enable'] = false
    prometheus['enable'] = false
    gitlab_rails['auto_migrate'] = false
    alertmanager['enable'] = false
    gitaly['enable'] = false
    gitlab_workhorse['enable'] = false
    nginx['enable'] = false
    postgres_exporter['enable'] = false
    postgresql['enable'] = false
    redis['enable'] = false
    redis_exporter['enable'] = false
    puma['enable'] = false
    gitlab_exporter['enable'] = false
    
    #######################################
    ###      Sidekiq configuration      ###
    #######################################
    sidekiq['enable'] = true
    sidekiq['listen_address'] = "0.0.0.0"
    
    ## Set number of Sidekiq queue processes to the same number as available CPUs
    sidekiq['queue_groups'] = ['*'] * 4
    
    ## Set number of Sidekiq threads per queue process to the recommend number of 10
    sidekiq['max_concurrency'] = 10
    
    ########################################
    ####              Redis              ###
    ########################################
    
    ## Must be the same in every sentinel node
    redis['master_name'] = 'gitlab-redis'
    
    ## The same password for Redis authentication you set up for the master node.
    redis['master_password'] = '<redis_master_password>'
    
    #######################################
    ###              Gitaly             ###
    #######################################
    
    ## Replace <gitaly_token> with the one you set up, see
    ## https://docs.gitlab.com/ee/administration/gitaly/configure_gitaly.html#about-the-gitaly-token
    git_data_dirs({
      'default' => { 'gitaly_address' => 'tcp://gitaly:8075' },
    })
    gitlab_rails['gitaly_token'] = '<gitaly_token>'
    
    #######################################
    ###            Postgres             ###
    #######################################
    
    # Replace <database_host> and <database_password>
    gitlab_rails['db_host'] = '<database_host>'
    gitlab_rails['db_password'] = '<database_password>'
    gitlab_rails['db_port'] = '5432'
    gitlab_rails['db_adapter'] = 'postgresql'
    gitlab_rails['db_encoding'] = 'unicode'
    gitlab_rails['auto_migrate'] = false
    
    # Add the Sidekiq nodes to PostgreSQL's trusted addresses.
    # In the following example, 10.10.1.30/32 is the private IP
    # of the Sidekiq server.
    postgresql['trust_auth_cidr_addresses'] = %w(127.0.0.1/32 10.10.1.30/32)
    
  4. Reconfigure GitLab:

    sudo gitlab-ctl reconfigure
    
  5. Restart the Sidekiq nodes after completing the process and finishing the database migrations.

Configure multiple Sidekiq nodes with shared storage

If you run multiple Sidekiq nodes with a shared file storage, such as NFS, you must specify the UIDs and GIDs to ensure they match between servers. Specifying the UIDs and GIDs prevents permissions issues in the file system. This advice is similar to the advice for Geo setups.

To set up multiple Sidekiq nodes:

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

    user['uid'] = 9000
    user['gid'] = 9000
    web_server['uid'] = 9001
    web_server['gid'] = 9001
    registry['uid'] = 9002
    registry['gid'] = 9002
    
  2. Reconfigure GitLab:

    sudo gitlab-ctl reconfigure
    

Configure the Container Registry when using an external Sidekiq

If you're using the Container Registry and it's running on a different node than Sidekiq, follow the steps below.

  1. Edit /etc/gitlab/gitlab.rb, and configure the registry URL:

    registry_external_url 'https://registry.example.com'
    gitlab_rails['registry_api_url'] = "https://registry.example.com"
    
  2. Reconfigure GitLab:

    sudo gitlab-ctl reconfigure
    
  3. In the instance where Container Registry is hosted, copy the registry.key file to the Sidekiq node.

Configure the Sidekiq metrics server

If you want to collect Sidekiq metrics, enable the Sidekiq metrics server. To make metrics available from localhost:8082/metrics:

To configure the metrics server:

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

    sidekiq['metrics_enabled'] = true
    sidekiq['listen_address'] = "localhost"
    sidekiq['listen_port'] = "8082"
    
    # Optionally log all the metrics server logs to log/sidekiq_exporter.log
    sidekiq['exporter_log_enabled'] = true
    
  2. Reconfigure GitLab:

    sudo gitlab-ctl reconfigure
    

Configure health checks

If you use health check probes to observe Sidekiq, you can set a separate port for health checks. Configuring health checks is only necessary if there is something that actually probes them. For more information about health checks, see the Sidekiq health check page.

To enable health checks for Sidekiq:

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

    sidekiq['health_checks_enabled'] = true
    sidekiq['health_checks_listen_address'] = "localhost"
    sidekiq['health_checks_listen_port'] = "8092"
    

    NOTE: If health check settings are not set, they default to the metrics exporter settings. This default is deprecated and is set to be removed in GitLab 15.0.

  2. Reconfigure GitLab:

    sudo gitlab-ctl reconfigure
    

Configure LDAP and user or group synchronization

If you use LDAP for user and group management, you must add the LDAP configuration to your Sidekiq node as well as the LDAP synchronization worker. If the LDAP configuration and LDAP synchronization worker are not applied to your Sidekiq node, users and groups are not automatically synchronized.

For more information about configuring LDAP for GitLab, see:

To enable LDAP with the synchronization worker for Sidekiq:

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

    gitlab_rails['ldap_enabled'] = true
    gitlab_rails['prevent_ldap_sign_in'] = false
    gitlab_rails['ldap_servers'] = {
    'main' => {
    'label' => 'LDAP',
    'host' =>  'ldap.mydomain.com',
    'port' => 389,
    'uid' => 'sAMAccountName',
    'encryption' => 'simple_tls',
    'verify_certificates' => true,
    'bind_dn' => '_the_full_dn_of_the_user_you_will_bind_with',
    'password' => '_the_password_of_the_bind_user',
    'tls_options' => {
      'ca_file' => '',
      'ssl_version' => '',
      'ciphers' => '',
      'cert' => '',
      'key' => ''
    },
    'timeout' => 10,
    'active_directory' => true,
    'allow_username_or_email_login' => false,
    'block_auto_created_users' => false,
    'base' => 'dc=example,dc=com',
    'user_filter' => '',
    'attributes' => {
      'username' => ['uid', 'userid', 'sAMAccountName'],
      'email' => ['mail', 'email', 'userPrincipalName'],
      'name' => 'cn',
      'first_name' => 'givenName',
      'last_name' => 'sn'
    },
    'lowercase_usernames' => false,
    
    # Enterprise Edition only
    # https://docs.gitlab.com/ee/administration/auth/ldap/ldap_synchronization.html
    'group_base' => '',
    'admin_group' => '',
    'external_groups' => [],
    'sync_ssh_keys' => false
    }
    } 
    gitlab_rails['ldap_sync_worker_cron'] = "0 */12 * * *"
    
  2. Reconfigure GitLab:

    sudo gitlab-ctl reconfigure