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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:
########################################
#####        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.
#
gitaly['enable'] = false
postgresql['enable'] = false
redis['enable'] = false
nginx['enable'] = false
puma['enable'] = false
gitlab_workhorse['enable'] = false
prometheus['enable'] = false
alertmanager['enable'] = false
grafana['enable'] = false
gitlab_exporter['enable'] = false
gitlab_kas['enable'] = false

##
## 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'

########################################
####              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",
     "gitaly_token" => "<gitaly_token>"
  }
})

#######################################
###            Postgres             ###
#######################################

# Replace <database_host> and <database_password>
gitlab_rails['db_host'] = '<database_host>'
gitlab_rails['db_port'] = '5432'
gitlab_rails['db_password'] = '<database_password>'

# 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)

## Prevent database migrations from running on upgrade automatically
gitlab_rails['auto_migrate'] = 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

  1. Reconfigure GitLab:

    sudo gitlab-ctl reconfigure

  2. 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, enable the Sidekiq health check server. To make health checks available from localhost:8092:

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

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

  2. Reconfigure GitLab:

    sudo gitlab-ctl reconfigure

For more information about health checks, see the Sidekiq health check page.

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

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