1. Deploy the hadoop-yarn helm chart on Opensshift


    To deploy the Hadoop YARN Helm chart on an OpenShift cluster using Pulumi, we will utilize the kubernetes.helm.sh/v3.Chart resource from the Pulumi Kubernetes provider. The Helm chart resource allows us to deploy packaged applications into a Kubernetes cluster.

    Helm charts are collections of pre-configured Kubernetes resources that you can deploy as a single unit. YARN (Yet Another Resource Negotiator) is a resource management and job scheduling technology in the Hadoop ecosystem. Deploying a Helm chart for Hadoop YARN consists of installing the chart with the desired settings into your OpenShift cluster.

    Before you begin, you need to have:

    1. Pulumi CLI installed.
    2. kubectl installed and configured to connect to your OpenShift cluster.
    3. Access to a Helm repository that hosts the Hadoop-YARN chart, if it's not in the default Helm repos.

    Here's a Pulumi program in TypeScript that defines a stack for deploying the Hadoop YARN Helm chart to an OpenShift cluster:

    import * as k8s from "@pulumi/kubernetes"; // This is the name of the Helm chart we want to deploy. const chartName = "hadoop-yarn"; // Optional: Specify the Helm chart version you want to deploy. // If not specified, the latest version will be deployed. const chartVersion = "1.2.3"; // replace with the actual chart version you wish to deploy // Optional: Specify the Helm repository that contains the Hadoop-YARN chart. // If the chart is in the default repos, this may not be required. const helmRepoUrl = "https://example-helm-repo.com"; // Optional: Customize the values.yaml of the Helm chart. // This is an object where the key-value pairs correspond to the Helm chart values. const customValues = { propertyOne: "valueOne", propertyTwo: "valueTwo" // Add more customization relevant to the hadoop-yarn Helm chart. }; // Instantiate a Helm chart resource to deploy Hadoop-YARN. const hadoopYarnChart = new k8s.helm.v3.Chart(chartName, { chart: chartName, version: chartVersion, fetchOpts: { repo: helmRepoUrl }, values: customValues, // If required, specify the namespace if it's different from the default. // namespace: "your-namespace" }); // Optional: Export endpoints or other properties for easy access. export const yarnEndpoint = hadoopYarnChart.getResourceProperty("v1/Service", "hadoop-yarn", "status");


    • We import the @pulumi/kubernetes package to interact with Kubernetes resources.
    • We specify some constants for chartName, chartVersion, helmRepoUrl, and customValues. This makes our code more maintainable and easier to configure.
      • chartName holds the name of the Helm chart we wish to deploy.
      • chartVersion is used to pin the chart to a specific version.
      • helmRepoUrl is where Pulumi will fetch the Helm chart from. You must replace this with the actual URL of your Helm repo.
      • customValues is an object that allows you to override default values in values.yaml of the Helm chart, similar to using the --set flag with helm install.
    • We then create a new instance of the Helm chart resource, hadoopYarnChart, which will deploy the Hadoop-YARN Helm chart.
    • We optionally export a stack output, yarnEndpoint, which would allow us to access the endpoint of the deployed YARN service. Note that you may need to customize the .getResourceProperty call based on the actual resources and properties you need to extract.

    After setting up this Pulumi program, you would run it using the standard Pulumi CLI commands:

    pulumi up

    Please replace chartVersion, helmRepoUrl, and any values within customValues with the details specific to your chart and desired configuration. If the Hadoop YARN chart requires more specific values (for CPU, memory settings, etc.), they would be set inside the customValues object.