Deploy the gitlab-controller helm chart on Kubernetes

Deploying GitLab Controller Helm Chart in Kubernetes

To deploy a Helm chart on Kubernetes using Pulumi, we'll utilize the kubernetes.helm.v3.Chart resource from Pulumi's Kubernetes provider. This Pulumi resource allows us to deploy Helm charts into a Kubernetes cluster, managing the installation and updates as part of the Pulumi infrastructure as code (IaC) approach.

Here are the steps we'll take in our program:

Import necessary packages: We import the packages required for deploying a Helm chart using Pulumi.
Create a Helm chart resource: We define a Helm chart resource including the necessary information such as chart name, release name, version, values, etc.

Before starting, ensure you have:

Pulumi CLI installed and configured with access to a Kubernetes cluster.
Access to your Kubernetes cluster via kubeconfig.
Helm and Kubernetes packages installed for your Pulumi language of choice.

Now, let's look at the Pulumi TypeScript code for deploying the GitLab controller Helm chart on Kubernetes.

import * as k8s from "@pulumi/kubernetes";

// Define the GitLab controller Helm chart resource.
const gitlabControllerChart = new k8s.helm.v3.Chart("gitlab-controller", {
    // The repository where the Helm chart is stored.
    repo: "gitlab", // Replace with actual repository name if different
    // The name of the chart.
    chart: "gitlab-controller", // Replace with actual chart name if different
    // Specify the version of the Helm chart to use.
    version: "x.y.z", // Replace with the specific chart version you want to deploy
    // Namespace where the chart will be installed.
    namespace: "default", // Change to the desired namespace if different from 'default'
    // Values to pass to the Helm chart.
    values: {
        // Provide configuration values for the chart here.
        // This is an example structure, adjust based on the actual values required by the chart.
        serviceType: "LoadBalancer",
        externalUrl: "https://gitlab.example.com",
        gitlabUser: "admin",
        gitlabPassword: "password",
    }
});

// Export the public endpoint of GitLab chart, if applicable.
// This can be adjusted depending on the specific details of the GitLab chart.
export const gitlabEndpoint = gitlabControllerChart.getResourceProperty(
    "v1/Service", "gitlab-controller", "status"
).apply(status => status.loadBalancer.ingress[0].hostname);

In the above code:

We import the Kubernetes package to work with Kubernetes resources.
We create a new Helm chart resource using the Chart class from k8s.helm.v3.
We specify parameters such as repo, chart, version, and namespace.
We define the values that the Helm chart requires which can include configurations like service type, URL, and authentication details. The specifics will depend on the actual Helm chart for GitLab you are using.
Finally, we export the GitLab service endpoint if the service type is a LoadBalancer, which helps to identify the public endpoint of your GitLab instance.

Please replace the placeholders (x.y.z, gitlab.example.com, chart values, etc.) with the actual information that corresponds to your GitLab Helm chart details and desired configuration.

Once you have your Pulumi program set up, you'd run pulumi up in the terminal within the directory of your Pulumi project to preview and apply your deployment.

Keep in mind that managing secrets such as passwords in plaintext (as in the values section) is not recommended for production settings. For a production environment, you would want to use a secrets manager or Pulumi's secret handling capabilities.