Deploy the cluster-api-openstack helm chart on Kubernetes

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Pulumi · Accepted Answer

To deploy the `cluster-api-openstack` Helm chart on a Kubernetes cluster using Pulumi, you'll need to use the Helm Chart resource from the Pulumi Kubernetes package. This allows you to deploy Helm charts in a similar fashion to how you would using the `helm` CLI tool.

The process includes defining a `Chart` resource in your Pulumi program, specifying the chart name, version, and any custom values you want to configure. The `Chart` resource will communicate with Tiller (if using Helm 2) or directly apply the chart manifests to the Kubernetes API server (if using Helm 3).

Below is a TypeScript program that demonstrates how to deploy the `cluster-api-openstack` Helm chart on a Kubernetes cluster. Please make sure to have a Kubernetes cluster running and configured to be accessible by `kubectl`, and Pulumi installed and configured with access to the cluster.

Before running the Pulumi program, ensure that you have the following prerequisites:

1. **Node.js and npm**: Installs with Node.js, and allows you to run the Pulumi program.
2. **Pulumi CLI**: Lets you run pulumi commands from the command line.
3. **Kubernetes cluster**: Running and accessible via `kubectl`. You also need appropriate permissions to deploy resources onto the cluster.
4. **Helm**: If the Helm chart you wish to deploy is not available in a public repository, or if you have to perform any manual operations with Helm prior to deploying with Pulumi, make sure Helm is installed.

Now, here's the Pulumi TypeScript program that deploys the `cluster-api-openstack` Helm chart:

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

// Create a new instance of the helm.sh/v3.Chart class to represent the chart deployment.
const clusterApiOpenstackChart = new k8s.helm.v3.Chart("cluster-api-openstack", {
    chart: "cluster-api-openstack",
    // Specify the version of the chart you wish to deploy. Replace with the desired version.
    version: "0.1.0",
    // Add any custom values you wish to override in the Helm chart deployment.
    // This can be done by specifying the 'values' property, as shown below:
    values: {
        // Replace these values with the actual configuration for the OpenStack provider.
        openstackUsername: "example-username",
        openstackPassword: "example-password",
        openstackAuthUrl: "https://openstack.example.com:5000/v3/",
        // ... Any other custom values needed ...
    },
}, {
    // If you need to point to a specific Kubernetes cluster other than the default,
    // provide the appropriate kubeconfig here.
    // Otherwise, Pulumi will use the default context from your kubeconfig file.
});

// Optional: Export the name of the chart. Useful if you need to reference it later.
export const chartName = clusterApiOpenstackChart.metadata.name;
```

This program will perform the following actions:

1. Import the Kubernetes package provided by Pulumi.
2. Define a Helm Chart resource using the `Chart` class from the Pulumi Kubernetes provider.
3. Specify the name of the chart (`cluster-api-openstack`), the version, and any custom values that you want to set via the `values` property.
4. Optionally export the name of the chart for further reference.

Please replace the placeholders within the `values` object with the actual configuration settings needed for the OpenStack provider. You may need to review the chart's `values.yaml` file for a complete list of configurable options.

To run this Pulumi program:

1. Create a new directory for your Pulumi project.
2. Inside the directory, initialize a new Pulumi project using `pulumi new`.
3. Choose the `typescript` template when prompted.
4. Replace the contents of `index.ts` with the code provided above.
5. Run `pulumi up` to preview and deploy the resources.
6. Confirm the deployment when prompted by Pulumi.

Pulumi will then deploy the Helm chart to your cluster, and the resources defined by the chart will start to be created. You can track the progress in the terminal, and once complete, your `cluster-api-openstack` chart will be running in your Kubernetes cluster.