Configure the GitLab chart with an external database

For a production-ready GitLab chart deployment, use an external database.


Networking prerequisites:

  • Ensure that the database is reachable from the cluster. Be sure that your firewall policies allow traffic.
  • If you plan to use PostgreSQL as a load balancing cluster and Kubernetes DNS for service discovery, when you install the bitnami/postgresql chart, use --set slave.service.clusterIP=None. This setting configures the PostgreSQL secondary service as a headless service to allow DNS A records to be created for each secondary instance.

    For an example of how to use Kubernetes DNS for service discovery, see examples/database/values-loadbalancing-discover.yaml.

To configure the GitLab chart to use an external database:

  1. Set the following parameters:

    • postgresql.install: Set to false to disable the embedded database.
    • Set to the hostname of the external database, can be a domain or an IP address.
    • global.psql.password.secret: The name of the secret that contains the database password for the gitlab user.
    • global.psql.password.key: Within the secret, the key that contains the password.
  2. Optional. The following items can be further customized if you are not using the defaults:

    • global.psql.port: The port the database is available on. Defaults to 5432.
    • global.psql.database: The name of the database.
    • global.psql.username: The user with access to the database.
  3. Optional. If you use a mutual TLS connection to the database, set the following:

    • global.psql.ssl.secret: A secret that contains the client certificate, key, and certificate authority.
    • global.psql.ssl.serverCA: In the secret, the key that refers to the certificate authority (CA).
    • global.psql.ssl.clientCertificate: In the secret, the key that refers to the client certificate.
    • global.psql.ssl.clientKey: In the secret, the client.
  4. When you deploy the GitLab chart, add the values by using the --set flag. For example:

    helm install gitlab gitlab/gitlab
      --set postgresql.install=false
      --set global.psql.password.secret=gitlab-postgresql-password
      --set global.psql.password.key=postgres-password