1. Deploy the rke2-coredns helm chart on Rancher

    TypeScript

    Deploying a Helm chart using Pulumi can be accomplished with the use of a Pulumi package that is designed to interact with Kubernetes resources. Since we are going to deploy the rke2-coredns Helm chart on a Rancher-managed cluster, we'll need to perform several tasks:

    1. Configure the Pulumi environment to interact with our Rancher-managed Kubernetes cluster.
    2. Create an instance of a Helm chart resource in our Pulumi program which references the rke2-coredns Helm chart.

    Here's a TypeScript program that demonstrates how to deploy a Helm chart using Pulumi:

    import * as k8s from '@pulumi/kubernetes'; import * as pulumi from '@pulumi/pulumi'; // Initialize a Kubernetes provider instance with the context of an existing cluster managed by Rancher. // Ensure that your kubeconfig is correctly set up to point to your Rancher-managed cluster. const clusterProvider = new k8s.Provider('rancher-k8s', { kubeconfig: pulumi.output('<YOUR_KUBECONFIG_CONTENTS>').apply(JSON.stringify), }); // Deploy the rke2-coredns Helm chart using the Helm Release resource from @pulumi/kubernetes package. const corednsHelmRelease = new k8s.helm.v3.Release('rke2-coredns', { chart: 'rke2-coredns', version: '1.10.101', // Specify the chart version you want to deploy repositoryOpts: { repo: 'https://charts.rancher.io', // The repository where the rke2-coredns chart can be found }, // Values for the Helm chart can be provided here as needed. // For example, you might want to set a custom value for any available chart values. values: { // Set your values here. E.g. replicaCount: 2 }, }, { provider: clusterProvider }); // Export any necessary resources. // This could be the Helm Release status, service URLs, or other information about the deployed resources. export const corednsReleaseStatus = corednsHelmRelease.status;

    In this program, we are first creating a Kubernetes provider instance. You will need to replace <YOUR_KUBECONFIG_CONTENTS> with the actual kubeconfig file contents to access your Rancher-managed Kubernetes cluster.

    Secondly, we instantiate a Pulumi Component resource of kind Release from the @pulumi/kubernetes package, which represents a Helm chart release. We specify the chart name, chart version, and the repository where the chart can be found.

    Additionally, you can pass custom configuration values for the Helm chart via the values field. These values can adjust the Helm chart deployment to your needs (for example, replica count, resource limits, etc.).

    Lastly, we export the status of the Helm chart release which will output the current status after deployment. You might want to output additional details like the service URLs or other relevant data specific to your deployment.

    Remember to replace the placeholder values with the actual values that fit your cluster configuration and Helm chart requirements. The example assumes the chart rke2-coredns is hosted at https://charts.rancher.io and the version 1.10.101 is used, which you'll need to adjust according to the actual chart you are deploying.

    Before you run this program with Pulumi, ensure you have installed the Pulumi CLI, logged in, created a Pulumi project, and installed all npm packages mentioned above. Then, execute the program using the Pulumi CLI to deploy the Helm chart to your Rancher cluster.


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