Deploy the helm-single-sign-on helm chart on Kubernetes

Question

Pulumi · Accepted Answer

Deploying a Helm chart onto a Kubernetes cluster using Pulumi is a common task that involves creating a `Chart` resource within a Pulumi program. The `Chart` resource is part of the Pulumi Kubernetes provider, which interacts directly with your Kubernetes cluster.

You'll need to ensure you have Pulumi installed and configured for use with your Kubernetes cluster. Typically, this would involve running `pulumi login` to authenticate with the Pulumi service and using `kubectl` to authenticate with your Kubernetes cluster. The code below assumes you've set this up already.

Below, you will find a Pulumi program written in TypeScript that deploys a Helm chart called `helm-single-sign-on`. This program defines a Pulumi stack that will interact with your Kubernetes cluster to deploy the chart.

Here are the steps the program performs:

1. It imports the necessary Pulumi Kubernetes package.
2. It creates a new Helm Chart resource using `new kubernetes.helm.v3.Chart()`.
3. The `Chart` resource specifies the Helm chart name, optionally, its version, repository, and any specific values you want to override within the chart.

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

// Define the Helm chart details.
const helmChart = new kubernetes.helm.v3.Chart("single-sign-on", {
    // Replace with your chart's repository details if it's not a stable chart.
    repo: "example-repo", // TODO: Specify the repository that contains the chart
    chart: "helm-single-sign-on",  // The name of the chart you want to deploy.

// Specify chart version (optional)
    version: "1.2.3", // TODO: Specify the version of the chart. Remove if you want the latest version.

// Specify namespace (optional)
    namespace: "default", // The Kubernetes namespace in which to deploy the chart. Defaults to "default".

// Optional: Specify any custom values you want to pass to the chart.
    values: {
        // These values would be specific to the helm-single-sign-on chart you are deploying
        // For example:
        // replicaCount: 2,
        // image: {
        //     repository: "example-image",
        //     tag: "latest"
        // },
        // ...
    },
});

// Optional: Export the resources created by the Helm chart, which can include URLs, status, and other metadata.
export const resources = helmChart.resources;
```

This is a basic Pulumi program. Here are some considerations you might want to keep in mind:

- The `repo` field needs the actual repository where your `helm-single-sign-on` chart is located.
- The `chart` field is the name of the chart to deploy. Ensure this matches the name in the chart repository.
- The `version` field is optional. If specified, Pulumi deploys that specific version of the chart; if omitted, the latest version will be deployed.
- The `values` are parameters you pass to the Helm chart to configure its deployment. These could be the number of replicas, the image to use, among other settings. These should be modified according to your chart's configuration options.
- The `namespace` is where you want your resources to be created. If it's omitted, resources will be created in the default namespace.

Run the Pulumi program by executing `pulumi up`. This will deploy the specified Helm chart to your Kubernetes cluster. Always preview changes (`pulumi preview`) before applying them to understand what will happen.

Remember to replace placeholders, like the chart repository URL and values, with the actual information from the Helm chart you wish to deploy.