Deploy the gitlab-backup helm chart on Opensshift

Deploying GitLab Backup Helm Chart on OpenShift Using Kubernetes Resources

To deploy the GitLab backup Helm chart on an OpenShift cluster using Pulumi, we'll utilize Kubernetes resources provided by the Pulumi Kubernetes provider. Pulumi allows you to define infrastructure as code in a variety of programming languages, enabling automation, repeatability, and transparency.

Below is the TypeScript program that will deploy the GitLab backup Helm chart to your OpenShift cluster.

First, you'll need to have Pulumi set up on your machine, connected to a Kubernetes cluster you have administrative access to. Since OpenShift is a Kubernetes distribution, Pulumi can manage resources on OpenShift clusters the same way it manages standard Kubernetes resources.

The program uses the kubernetes.helm.sh/v3.Chart class from the @pulumi/kubernetes package, which represents a Helm chart in a Pulumi program. The Chart class is a high-level Pulumi component that deploys the chart as specified by the given arguments.

We will specify the name of the Helm chart (gitlab-backup in this case), the repository from where to fetch the chart, and any values that need to be customized for the chart's deployment. If the chart requires any specific configuration for OpenShift, it should be provided via the values parameter in the Chart resource.

Before running the following code, ensure you have installed the necessary npm packages:

@pulumi/pulumi
@pulumi/kubernetes

You can run npm install @pulumi/pulumi @pulumi/kubernetes to install them.

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

// Create a Helm Chart for the GitLab backup.
const gitlabBackupChart = new k8s.helm.v3.Chart('gitlab-backup', {
    chart: 'gitlab-backup',
    repo: 'some-repo', // Replace with the actual repository name that hosts the gitlab-backup Helm chart.
    namespace: 'gitlab-backup-ns', // Replace with the actual namespace or remove if deploying to the default namespace.
    // Specify the Helm chart version if required. If not specified, the latest version will be installed.
    version: '1.2.3', // Replace with the desired chart version.
    // Provide any custom values required for the chart.
    values: {
        // Add configuration parameters here as needed.
        // persistence: {
        //     storageClass: 'nfs',
        //     size: '10Gi',
        // },
        // ...
    },
}, { provider: yourK8sProvider }); // Replace `yourK8sProvider` with your Kubernetes provider instance if needed, or remove this line to use the default context from your Kubernetes configuration.

// Export the base domain so that it can be easily accessed if needed, usually through 'pulumi stack output baseDomain'
export const baseDomain = gitlabBackupChart.getResourceProperty('v1/Service', 'gitlab-backup', 'status').apply(status => status.loadBalancer.ingress[0].hostname);

Here's a breakdown of what the script does:

The yourK8sProvider should be replaced with the specific instance of your Kubernetes provider that's pointing to your OpenShift cluster if you're working with multiple clusters or want to specify a particular context.
The namespace parameter is where you specify the OpenShift project (Kubernetes namespace) to deploy the chart into. If omitted, the default namespace is assumed.
Inside the values object, you'd provide any configuration overrides needed for your GitLab backup chart. This often includes persistent storage configuration, access control, and so on. These values are specific to the chart in question; check the chart's documentation for details on what can be configured.
After the Helm chart is successfully deployed, you may need other details from the deployment—like an ingress hostname or a LoadBalancer IP—which you can export at the end of your program.

To run the program:

Write this TypeScript code into a file named index.ts.
Ensure you have the required Pulumi stack and Kubernetes configuration set up.
Run pulumi up to preview and deploy the changes.

Remember, the repo needs to be set to the actual repository where the gitlab-backup chart is hosted. Helm charts for GitLab are typically maintained in their own repositories or in common repositories like Helm's official charts, but you need to specify the correct one your organization uses for GitLab backups. Similarly, the chart parameter should match the name of the chart in the repository.

If you encounter any issues, the error messages provided by Pulumi in the terminal often give clear guidance on what's wrong. Pulumi also has an online community and assistance channels if you need more support.