Deploy the istio-cni helm chart on Kubernetes

Question

Pulumi · Accepted Answer

To deploy the Istio CNI (Container Network Interface) Helm chart on a Kubernetes cluster using Pulumi, you'll follow these steps:

Set up Pulumi with the Kubernetes provider.
Use Pulumi's Helm Chart resource to deploy Istio CNI on your cluster.

First, make sure that you have a Kubernetes cluster up and running. You can create one with Pulumi or use an existing one. Ensure your kubeconfig file is properly set up to communicate with your cluster.

The Helm Chart resource from the Kubernetes provider in Pulumi will enable you to deploy Helm charts to your Kubernetes cluster. The Istio CNI is responsible for setting up the network for Istio service mesh, and it's generally installed when you want Istio to handle the pod's traffic without needing to inject an Istio sidecar proxy.

Here's a TypeScript program that accomplishes this task:

import * as k8s from "@pulumi/kubernetes";

// Create an instance of the k8s.Provider class to interact with your Kubernetes cluster.
const provider = new k8s.Provider("provider", {
    kubeconfig: "<your-kubeconfig-here>", // Replace this with your Kubeconfig data
});

// Deploy the Istio CNI Helm chart.
const istioCniChart = new k8s.helm.v3.Chart("istio-cni", {
    chart: "istio-cni",
    version: "1.0.0", // Specify the version of the chart you want to deploy
    fetchOpts:{
        repo: "https://helm.istio.io/", // The repository where the chart is stored
    },
}, { provider });

// Export the Chart name of the Istio CNI deployment
export const istioCniChartName = istioCniChart.chart;

Replace the placeholder <your-kubeconfig-here> with the actual content of your kubeconfig file, which allows Pulumi to authenticate with your Kubernetes cluster.

The program sets up a Chart resource with the istio-cni chart. Notice that you need to specify the version of the chart to ensure you're getting the desired release. You also specify the repository URL where the chart can be found, which is the official Helm repository for Istio.

After running the above program with Pulumi, istio-cni will be deployed to your Kubernetes cluster.

To execute this Pulumi program, you would typically write the code into a file (for example, index.ts), then use the Pulumi CLI to create a new stack, and finally, run pulumi up to preview and apply the changes to your cloud resources. These cloud resources, in this case, are the various Kubernetes resources created as a result of the Helm chart being applied.