How to install and use the GitLab Kubernetes Operator

The GitLab Kubernetes Operator, released on October 12, 2021, facilitates the installation and management of GitLab instances on Kubernetes or OpenShift clusters by automating tasks such as upgrades, data integrity management, application reconfiguration, failure recovery, and autoscaling. The installation process on an OpenShift Container Platform cluster involves several prerequisites, including having Prometheus and cert-manager operational, as well as creating a namespace for GitLab resources. The guide details setting environment variables for the operator version and platform, applying the necessary Custom Resource Definitions, and using a custom resource file to specify domain and email settings for the GitLab instance. Once the operator is applied, it initiates the creation of necessary pods, and the external IP address is obtained to create DNS records for subsystem mapping. After retrieving the initial root password stored as a secret, users can log in to the newly created GitLab instance running on the OpenShift platform, demonstrating the operator's capability to streamline GitLab deployments.

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