--- last_updated: 2017-09-25 --- # GitLab Kubernetes / OpenShift integration GitLab can be configured to interact with Kubernetes, or other systems using the Kubernetes API (such as OpenShift). Each project can be configured to connect to a different Kubernetes cluster, see the [configuration](#configuration) section. If you have a single cluster that you want to use for all your projects, you can pre-fill the settings page with a default template. To configure the template, see the [Services Templates](services_templates.md) document. ## Configuration Navigate to the [Integrations page](project_services.md#accessing-the-project-services) of your project and select the **Kubernetes** service to configure it. Fill in all the needed parameters, check the "Active" checkbox and hit **Save changes** for the changes to take effect. ![Kubernetes configuration settings](img/kubernetes_configuration.png) The Kubernetes service takes the following parameters: - **API URL** - It's the URL that GitLab uses to access the Kubernetes API. Kubernetes exposes several APIs, we want the "base" URL that is common to all of them, e.g., `https://kubernetes.example.com` rather than `https://kubernetes.example.com/api/v1`. - **CA certificate** (optional) - If the API is using a self-signed TLS certificate, you'll also need to include the `ca.crt` contents here. - **Project namespace** (optional) - The following apply: - By default you don't have to fill it in; by leaving it blank, GitLab will create one for you. - Each project should have a unique namespace. - The project namespace is not necessarily the namespace of the secret, if you're using a secret with broader permissions, like the secret from `default`. - You should **not** use `default` as the project namespace. - If you or someone created a secret specifically for the project, usually with limited permissions, the secret's namespace and project namespace may be the same. - **Token** - GitLab authenticates against Kubernetes using service tokens, which are scoped to a particular `namespace`. If you don't have a service token yet, you can follow the [Kubernetes documentation](https://kubernetes.io/docs/tasks/configure-pod-container/configure-service-account/) to create one. You can also view or create service tokens in the [Kubernetes dashboard](https://kubernetes.io/docs/tasks/access-application-cluster/web-ui-dashboard/#config) (under **Config > Secrets**). ## Deployment variables The Kubernetes service exposes the following [deployment variables](../../../ci/variables/README.md#deployment-variables) in the GitLab CI/CD build environment: - `KUBE_URL` - Equal to the API URL. - `KUBE_TOKEN` - The Kubernetes token. - `KUBE_NAMESPACE` - The Kubernetes namespace is auto-generated if not specified. The default value is `<project_name>-<project_id>`. You can overwrite it to use different one if needed, otherwise the `KUBE_NAMESPACE` variable will receive the default value. - `KUBE_CA_PEM_FILE` - Only present if a custom CA bundle was specified. Path to a file containing PEM data. - `KUBE_CA_PEM` (deprecated) - Only if a custom CA bundle was specified. Raw PEM data. - `KUBECONFIG` - Path to a file containing `kubeconfig` for this deployment. CA bundle would be embedded if specified. ## What you can get with the Kubernetes integration Here's what you can do with GitLab if you enable the Kubernetes integration. ### Deploy Boards > Available in [GitLab Enterprise Edition Premium][ee]. GitLab's Deploy Boards offer a consolidated view of the current health and status of each CI [environment](../../../ci/environments.md) running on Kubernetes, displaying the status of the pods in the deployment. Developers and other teammates can view the progress and status of a rollout, pod by pod, in the workflow they already use without any need to access Kubernetes. [> Read more about Deploy Boards](https://docs.gitlab.com/ee/user/project/deploy_boards.html) ### Canary Deployments > Available in [GitLab Enterprise Edition Premium][ee]. Leverage [Kubernetes' Canary deployments](https://kubernetes.io/docs/concepts/cluster-administration/manage-deployment/#canary-deployments) and visualize your canary deployments right inside the Deploy Board, without the need to leave GitLab. [> Read more about Canary Deployments](https://docs.gitlab.com/ee/user/project/canary_deployments.html) ### Kubernetes monitoring Automatically detect and monitor Kubernetes metrics. Automatic monitoring of [NGINX ingress](./prometheus_library/nginx.md) is also supported. [> Read more about Kubernetes monitoring](./prometheus_library/kubernetes.md) ### Auto DevOps Auto DevOps automatically detects, builds, tests, deploys, and monitors your applications. To make full use of Auto DevOps(Auto Deploy, Auto Review Apps, and Auto Monitoring) you will need the Kubernetes project integration enabled. [> Read more about Auto DevOps](../../../topics/autodevops/index.md) ### Web terminals NOTE: **Note:** Introduced in GitLab 8.15. You must be the project owner or have `master` permissions to use terminals. Support is limited to the first container in the first pod of your environment. When enabled, the Kubernetes service adds [web terminal](../../../ci/environments.md#web-terminals) support to your [environments](../../../ci/environments.md). This is based on the `exec` functionality found in Docker and Kubernetes, so you get a new shell session within your existing containers. To use this integration, you should deploy to Kubernetes using the deployment variables above, ensuring any pods you create are labelled with `app=$CI_ENVIRONMENT_SLUG`. GitLab will do the rest! [ee]: https://about.gitlab.com/gitlab-ee/