1. Deploy the overlord helm chart on Kubernetes


    To deploy a Helm chart on Kubernetes using Pulumi, you will be using the kubernetes.helm.v3.Chart resource from the Pulumi Kubernetes provider. This resource allows you to deploy Helm charts to a Kubernetes cluster. Helm is a package manager for Kubernetes that allows you to bundle applications as charts.

    Here's a step-by-step guide on how to use Pulumi to deploy an "overlord" Helm chart to a Kubernetes cluster:

    1. Define the Helm Chart: You'll need to specify the name of the chart, and optionally, you can specify the version, the source repository, and any custom configuration values you want to apply.

    2. Create a Pulumi Project: Your code will go inside a Pulumi project that you can create using the pulumi new command.

    3. Install Pulumi Kubernetes SDK: Ensure you have the Pulumi Kubernetes SDK installed. You can do this by running npm install @pulumi/kubernetes.

    4. Write the Deployment Script: In your Pulumi program, use the Chart resource to deploy the chart to your cluster.

    5. Deploy: You'll run pulumi up to execute your script which will deploy the chart.

    Now let's look at the actual Pulumi TypeScript code that does this:

    import * as k8s from "@pulumi/kubernetes"; // Replace the following variables with the appropriate values for your setup. // If you have your cluster context already set, Pulumi will use that context to deploy the Helm chart. const chartName = "overlord"; // The name of the Helm chart to deploy const chartVersion = "1.0.0"; // Specify the chart version (optional, omit to get the latest) const repository = "http://myhelmrepo.com"; // The Helm chart repository URL (replace with the actual URL) // Now we define the Helm chart resource. // This component will interpret and deploy the overlord Helm chart to the Kubernetes cluster. const overlordChart = new k8s.helm.v3.Chart(chartName, { chart: chartName, version: chartVersion, // Uncomment the repo line below if your Helm chart is in a Helm repository. // repo: repository, // If you have additional configuration you'd like to pass to your Helm chart, you can do so here. // values: { // key: "value", // }, }); // Export the chart's name and version. You can also export other information as needed. export const overlordChartName = overlordChart.chartName; export const overlordChartVersion = overlordChart.chartVersion; // To apply the script: // - Ensure you have the Pulumi CLI installed and the Kubernetes context set for the desired cluster. // - Run `pulumi up` in the project directory.

    In this program:

    • We import the @pulumi/kubernetes package, which contains the necessary classes and functions to work with Kubernetes resources.
    • We define constants for the chart name, version, and repository URL. You'll need to replace these with the actual details for the "overlord" chart that you're deploying.
    • We use the k8s.helm.v3.Chart class to define our Helm chart resource. It's initialized with an object that specifies properties like the chart name, repository URL, and the chart version.
    • We export the name and the version of the deployed chart as Pulumi stack outputs, which is useful for querying with pulumi stack output after deployment.
    • To run the script, you need to have pulumi CLI installed and your Kubernetes context configured.

    Remember to replace the placeholder values in the script with the actual details for your Helm chart and Kubernetes environment. Also, if you have additional configuration for your chart, you can pass that in the values field of the Chart resource.

    When you're ready to deploy the chart, simply run pulumi up in the project directory, and Pulumi will handle the rest.