1. Deploy the twitter-app helm chart on Opensshift


    To deploy the "twitter-app" Helm chart on OpenShift using Pulumi, we will be utilizing the kubernetes.helm.v3.Chart resource from Pulumi's Kubernetes provider. This resource enables us to deploy Helm charts into a Kubernetes cluster.

    Before we proceed with the Pulumi code, ensure the following prerequisites are met:

    1. You have Pulumi CLI installed.
    2. You have kubectl configured to access your OpenShift cluster.
    3. Helm and the chart you wish to deploy (twitter-app in this case) are accessible. Make sure you know the repository URL where your chart is hosted if it's not a local chart.

    Here's the Pulumi program in TypeScript which you can use to deploy a Helm chart on your OpenShift cluster:

    import * as k8s from "@pulumi/kubernetes"; // Create an instance of the Kubernetes provider configured for the OpenShift cluster. const openshiftProvider = new k8s.Provider("openshiftProvider", { kubeconfig: "<Your OpenShift kubeconfig here>", // Replace <Your OpenShift kubeconfig here> with your actual kubeconfig }); // Deploy the twitter-app Helm chart using the Helm Chart resource. const twitterAppChart = new k8s.helm.v3.Chart("twitter-app-chart", { chart: "twitter-app", // Replace with your chart name, if it's different. version: "1.0.0", // Replace with the specific version of the chart you want to deploy. fetchOpts: { repo: "https://<helm chart repository URL>", // Replace with the actual repository URL where your Helm chart is hosted. }, // You can specify additional values here if required by the chart. }, { provider: openshiftProvider }); // Export the status URL by querying the deployed services (optional). export const statusUrl = twitterAppChart.getResourceProperty("v1/Service", "twitter-app", "status").apply(status => status.loadBalancer.ingress[0].hostname);

    Replace placeholders with values specific to your environment. For example:

    • <Your OpenShift kubeconfig here>: Replace this with the contents of your kubeconfig file to establish authentication with your OpenShift cluster.

    • 1.0.0: This should match the version of the Helm chart you wish to deploy. The Helm chart version must be available in the chart's repository.

    • https://<helm chart repository URL>: This URL should point to the repository where your Helm chart is stored. It can be an official Helm repository URL or a custom repository hosted by you or your organization.

    Save the code to a file, such as index.ts, as part of a Pulumi project. You can invoke this program using the Pulumi CLI to create, update, or destroy resources in your OpenShift cluster.

    This Pulumi program will communicate with your OpenShift cluster using the provided kubeconfig. Then, it uses that context to deploy the twitter-app Helm chart to the cluster by instructing Pulumi to create resources defined in the chart. Once the deployment is successful, you can query the resources to extract useful information like the URL to access the service, as shown with the optional statusUrl export in the above code snippet.

    To run the Pulumi program:

    1. Authenticate to your OpenShift cluster using the OpenShift oc CLI or by obtaining the kubeconfig file with appropriate access to the cluster.
    2. Ensure you are in the correct Pulumi project directory that contains the index.ts file with the above code.
    3. Run pulumi up in your terminal. Pulumi will preview the changes and ask for confirmation to proceed with the deployment.

    Remember to customize the chart parameters according to your needs and the structure of the twitter-app chart. The chart may require certain configurations specific to its design that you may need to include in the values section of the k8s.helm.v3.Chart resource.