1. Deploy the twampy helm chart on Linode Kubernetes Engine


    To deploy the twampy Helm Chart on Linode Kubernetes Engine (LKE) using Pulumi, we will take the following steps:

    1. Set up the Linode Kubernetes Engine Cluster: We need to create a Kubernetes cluster on Linode if one does not already exist. Pulumi provides resources for creating and managing LKE clusters.

    2. Install the Helm Chart: We will use the kubernetes package provided by Pulumi to deploy Helm charts to a Kubernetes cluster. In this case, we will deploy the twampy Helm Chart.

    Here's a detailed TypeScript program to accomplish the deployment:

    import * as pulumi from "@pulumi/pulumi"; import * as kubernetes from "@pulumi/kubernetes"; import * as linode from "@pulumi/linode"; // Create a Linode Kubernetes Engine (LKE) cluster const clusterName = "twampy-cluster"; const lkeCluster = new linode.LkeCluster(clusterName, { // Choose the region where you want to deploy your cluster region: "us-central", // Define the type of Linode instances for the Kubernetes nodes nodePools: [ { type: "g6-standard-2", // example instance type, choose one that suits your workload count: 3, // number of nodes in the node pool }, ], // Specify the Kubernetes version k8sVersion: "1.21", // Optionally, you can label your cluster for better management tags: ["twampy-application"], }); // Set up a Kubernetes provider to interact with the LKE cluster const k8sProvider = new kubernetes.Provider("k8s-provider", { kubeconfig: lkeCluster.kubeconfigRaw, }); // Deploy the twampy Helm chart to the LKE cluster const twampyChart = new kubernetes.helm.v3.Chart("twampy-chart", { // Replace with the specific chart name or URL chart: "twampy", // Specify the Helm repository, replace with the Helm repo URL for twampy or its name if it's a known repository fetchOpts: { repo: "http://helm-repo-url/", }, // If twampy requires any specific values, specify them here values: { // For example, replace these with actual values for the twampy Helm chart serviceType: "LoadBalancer", replicaCount: 1, }, // Namespace where the Helm chart will be deployed namespace: "default", }, { provider: k8sProvider }); // Export the cluster's kubeconfig and the public endpoint to access twampy if available export const kubeconfig = lkeCluster.kubeconfigRaw; export const twampyEndpoint = twampyChart.getResourceProperty("v1/Service", "twampy-service", "status").apply(status => status.loadBalancer.ingress[0].ip);

    Description of the Program

    • We begin by importing the necessary Pulumi libraries to manage resources on Pulumi, Kubernetes, and Linode.
    • Next, we create a new Linode Kubernetes cluster by using the linode.LkeCluster class. This class takes parameters like the region, node pool configurations, and Kubernetes version.
      • region represents the Linode region where the cluster will be created.
      • nodePools represents the Linode instance type and count that should be part of the Kubernetes cluster.
    • Once the cluster is created, we retrieve the generated kubeconfig which is necessary for our Kubernetes provider to interact with the new cluster.
    • The Kubernetes provider is then instantiated with this kubeconfig, allowing us to deploy resources to our cluster.
    • Using the kubernetes.helm.v3.Chart class, we deploy the twampy Helm chart. Here we specify the chart repository and any values that twampy requires to be customized.
      • Please replace http://helm-repo-url/ with the actual URL of the Helm repository that hosts the twampy chart.
      • If there are specific values that need to be overridden in the chart, you would include them in the values object.
    • Finally, we export the kubeconfig and the external endpoint where twampy can be accessed. The twampyEndpoint uses Pulumi's apply functionality to extract the load balancer's IP address to allow for external access might not be available immediately after the deployment and may vary based on the Helm chart configurations.