1. Deploy the kudo helm chart on Linode Kubernetes Engine

    TypeScript

    Deploying a Helm chart on a Kubernetes cluster managed by the Linode Kubernetes Engine (LKE) involves several steps using Pulumi. First, we'll need to create a Linode Kubernetes cluster if one doesn't exist. Next, we would set up the necessary configuration to connect to the cluster. Finally, we'll deploy the Helm chart to the cluster.

    Below is a Pulumi TypeScript program that performs these steps:

    1. Linode Kubernetes Cluster Creation: We'll use Pulumi's Linode provider to create a new Kubernetes cluster. If you already have an LKE cluster, this step can be skipped, and you can just configure Pulumi to use your existing cluster by setting the kubeconfig correctly.

    2. Install KUDO Helm Chart: We'll then install the KUDO (Kubernetes Universal Declarative Operator) Helm chart on our Kubernetes cluster. Pulumi supports Helm charts, and in this example, I’ll show you how to deploy the chart after establishing a connection to the LKE cluster.

    Let's start by creating the Kubernetes cluster:

    import * as linode from "@pulumi/linode"; import * as k8s from "@pulumi/kubernetes"; // Create a Linode Kubernetes Engine cluster. const cluster = new linode.LkeCluster("my-cluster", { region: "us-central", k8sVersion: "1.21", tags: ["pulumi-lke-cluster"], nodePools: [{ type: "g6-standard-2", // Select the node size. count: 3, // Number of nodes in the node pool. }], }); // Export the kubeconfig to connect to the cluster. export const kubeConfig = cluster.kubeconfig;

    After your cluster is created and running, we can use Pulumi's Kubernetes provider to deploy the KUDO Helm chart to it. Ensure you have the kubeconfig file for authentication or configure it in your Pulumi stack using Pulumi secrets.

    Now, deploy the KUDO Helm chart:

    // Use the Linode-generated kubeconfig to connect to the LKE cluster. const provider = new k8s.Provider("lke-k8s", { kubeconfig: kubeConfig, }); // Deploy the KUDO Helm chart. const kudoChart = new k8s.helm.v3.Chart("kudo", { chart: "kudo", version: "0.18.2", // Specify the version of the Helm chart. fetchOpts: { repo: "https://kudo.dev/charts/", }, }, { provider }); // Export the status of the Helm deployment. export const kudoChartStatus = kudoChart.status;

    In the above program:

    • We import the necessary Pulumi packages for Linode and Kubernetes.
    • We define an LKE cluster with a specified region, Kubernetes version, tag, and node pool configuration.
    • We create a new instance of the k8s.Provider class, providing the kubeconfig credentials obtained from the LKE cluster.
    • We initialize a new Helm chart resource for KUDO, specifying the chart name, version, and repository URL. This is done within the context of the provider we configured for the LKE cluster.

    Remember to install Pulumi and set up your Linode access token. Also, install @pulumi/linode and @pulumi/kubernetes npm packages in your Pulumi project.

    To run this Pulumi program:

    1. Create a new directory and navigate into it.
    2. Run pulumi new typescript to create a new Pulumi TypeScript project.
    3. Replace the contents of index.ts with the code above.
    4. Run npm install @pulumi/linode @pulumi/kubernetes to install the necessary dependencies.
    5. Run pulumi up to preview and deploy the changes. You'll be prompted to log in to the Pulumi service and choose or create a Pulumi project where your resources will be managed.

    Ensure you've replaced the version with the version of KUDO you wish to deploy, as the provided version is just an example and may be outdated at the time of writing.

    Once the deployment is complete, you will have a running LKE cluster with the KUDO Helm chart installed. If you'd like to visit Pulumi's official documentation to learn more, you can find detailed information about Linode's Pulumi resources and the Pulumi Kubernetes provider.


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