Deploy the chaoskube helm chart on Kubernetes

Question

Pulumi · Accepted Answer

To deploy the `chaoskube` Helm chart on a Kubernetes cluster using Pulumi, you'll use the `Chart` resource from the `@pulumi/kubernetes` package. The `Chart` resource allows you to instantiate a Helm chart and configure it with specified values.

The `chaoskube` Helm chart periodically kills random pods in your Kubernetes cluster, which can be helpful for testing the resilience of your system.

Below, you’ll find a Pulumi program written in TypeScript that demonstrates how to deploy the `chaoskube` chart. This program assumes that you have a Kubernetes cluster already running and accessible via `kubectl` on your local machine, and that your `kubeconfig` file is set up correctly.

First, I’ll go through a step-by-step explanation, and then I will provide you with the full code:

1. **Setup**: You'll start by importing the necessary modules from the Pulumi library.
2. **Chart Resource**: Instantiate a new Helm chart for `chaoskube`. You'll need to provide the chart name and optionally specify the chart version and repository. You can also provide additional configuration values as needed.
3. **Export**: You'll often want to export some details of the deployed resources; for example, you might export the namespace where `chaoskube` is deployed.

Here is the full Pulumi program that accomplishes the deployment:

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

// Initialize a Helm chart for chaoskube
const chaoskubeChart = new k8s.helm.v3.Chart('chaoskube', {
  chart: 'chaoskube',
  // Optional: Specify the Helm chart version you want to deploy
  version: '0.25.0',
  // Optional: If your Helm chart is in a custom repository, you specify the URL of the repository
  fetchOpts: {
    repo: 'https://helm.robusta.dev',
  },
  // You can specify additional configuration values here
  values: {
    // For example, you can set the namespaces where chaoskube is allowed to operate
    namespaces: ['default'],
    // You can also configure the interval between kills, the time of day when killing is allowed, and so on
    interval: '60s',
  },
});

// Export the namespace in which chaoskube is installed
export const chaoskubeNamespace = chaoskubeChart.getResourceProperty('v1/Namespace', 'chaoskube', 'metadata').apply(m => m.name);
```

This program creates and deploys an instance of `chaoskube` with the settings provided in the `values` object to your Kubernetes cluster. The `chaoskube` chart will be fetched from the specified chart repository, and deployed via Pulumi when you run `pulumi up`.