Deploy the stateful helm chart on Kubernetes

Question

Pulumi · Accepted Answer

Deploying a Helm chart to Kubernetes using Pulumi involves several steps, such as setting up a Kubernetes cluster, installing the Helm CLI, and using Pulumi’s Kubernetes provider to reference or install a Helm chart. Below, I'll provide a program that demonstrates how to deploy a stateful Helm chart on Kubernetes with Pulumi.

This program assumes you are familiar with the [Helm package manager](https://helm.sh/), and that you have a Kubernetes cluster running, and `kubectl` configured to connect to it.

We'll use the `kubernetes.helm.v3.Chart` resource from Pulumi’s Kubernetes provider. This resource allows us to deploy Helm charts to our Kubernetes cluster in a declarative fashion.

First, we'll declare the necessary imports and instantiate the Chart resource. We'll specify the name of the Helm chart, the repository URL from where the Helm chart will be fetched, and optionally, configuration parameters in the `values` field which override the default chart values.

Here's a Pulumi program in TypeScript that demonstrates this:

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

// Define the settings for our Helm chart
const chartName = "my-stateful-chart"; // Replace with your chart name
const chartVersion = "1.0.0"; // Specify the chart version
const chartRepo = "https://my-helm-charts.com"; // The URL of the Helm repository
const namespace = "default"; // Kubernetes namespace where the chart will be deployed

// Define any custom values to override the default chart values
const customValues = {
    key: "value", // Replace with your own custom values
    // Add other custom configurations as needed
};

// Deploy the Helm chart
const statefulChart = new k8s.helm.v3.Chart(chartName, {
    chart: chartName,
    version: chartVersion,
    fetchOpts: {
        repo: chartRepo,
    },
    namespace: namespace,
    values: customValues,
});

// After running `pulumi up`, the stateful Helm chart will be deployed to your Kubernetes cluster.
```

To run this Pulumi program, save it in a file named `index.ts`. Then, run `pulumi up` after navigating to the folder containing this file. Pulumi will perform the deployment to your Kubernetes cluster.

Make sure you have the [`@pulumi/kubernetes`](https://www.pulumi.com/registry/packages/kubernetes/) package installed in your project by running `npm install @pulumi/kubernetes`.

This program also assumes that your Pulumi configuration is set up to connect to your desired Kubernetes cluster. If it is not, you can configure the Kubernetes provider as needed or use the `kubeconfig` file to set up the connection.