Deploy the verzoektypecatalogus helm chart on Rancher

Question

Pulumi · Accepted Answer

To deploy a Helm chart on Rancher using Pulumi, you can leverage the `rancher2` provider. Below, I'll provide you with a TypeScript program that demonstrates how to set up a Pulumi project to deploy the `verzoektypecatalogus` Helm chart to a Rancher-managed Kubernetes cluster.

Firstly, we need to ensure that our Pulumi environment is authenticated with Rancher. To do this, we must have access to the Rancher API URL and an API token, which should be set up out of band. You should have your Rancher API URL and an API token ready before running this program.

Secondly, we'll be using several Pulumi resources from the `rancher2` package:

- `Cluster`: This is needed if you want to provision a new Kubernetes cluster in Rancher. If you are deploying to an existing cluster, you might not need to create one programmatically.
- `CatalogV2`: This represents a catalog within Rancher, which contains the Helm chart repositories.
- `AppV2`: This resource represents the deployment of a Helm chart within a Kubernetes cluster managed by Rancher.

If you haven't already, you need to install the `rancher2` package using npm:

```bash
npm install @pulumi/rancher2
```

Here is the Pulumi program for deploying the Helm chart:

```typescript
import * as pulumi from '@pulumi/pulumi';
import * as rancher2 from '@pulumi/rancher2';

// Create a Rancher2 provider instance using the Rancher API URL and an API token.
const provider = new rancher2.Provider('rancher', {
    apiUrl: 'https://your-rancher-api-url', // Replace with your Rancher API URL
    tokenKey: 'your-rancher-api-token',     // Replace with your Rancher API token
});

// Here we create a catalog that points to the repository containing your chart.
// Make sure to replace `your-catalog-name` and `your-repo-url` with the appropriate values.
const catalog = new rancher2.CatalogV2('verzoektypecatalogus-catalog', {
    name: 'your-catalog-name', // Replace with a name for the catalog
    url: 'your-repo-url',      // Replace with the Helm chart repository URL
}, { provider: provider });

// Assuming the target namespace already exists in the Rancher cluster,
// deploy the Helm chart to that namespace.
const verzoektypecatalogusApp = new rancher2.AppV2('verzoektypecatalogus-app', {
    name: 'verzoektypecatalogus',
    chartName: 'verzoektypecatalogus',
    // Ensure this chart version is available in your Helm repository
    chartVersion: '1.0.0',
    // The catalog containing the chart, references the catalog we just created.
    repoName: catalog.name,
    // The name of the target Rancher-managed Kubernetes cluster.
    clusterId: 'c-l6fj2', // Replace with your Rancher Cluster ID
    // The Kubernetes namespace into which the chart should be deployed.
    namespace: 'default', // Replace with the target namespace
    // Values to pass to the helm chart using the Helm style `values.yaml`.
    values: JSON.stringify({
       // Example value override
       // image: {
       //   repository: "nginx",
       //   tag: "stable"
       // },
       // Replace with actual values required by the 'verzoektypecatalogus' chart
    }),
}, { provider: provider });

// Export the name of the app as an output
export const appName = verzoektypecatalogusApp.name;
```

Let's break down what the code is doing:

1. We create a `rancher2.Provider` instance that allows us to communicate with your Rancher instance.

2. A `CatalogV2` resource is created which points to the Helm chart repository URL containing the `verzoektypecatalogus` Helm chart.

3. We deploy the Helm chart using `AppV2`, specifying the chart's name, version, and any custom values that may be required for your deployment.

It's important to replace placeholder values (e.g., `'https://your-rancher-api-url'`, `'your-rancher-api-token'`, `'your-repo-url'`, `'your-catalog-name'`, and `'c-l6fj2'`) with actual information from your environment.

To run this code, save it into a file named `index.ts`, and then use the Pulumi CLI to create and deploy the stack:

```bash
pulumi stack init verzoektypecatalogus-deployment
pulumi up
```

Make sure you've logged in to Pulumi (e.g., using `pulumi login`) and have set the correct Kubernetes context or Rancher credentials in your environment if needed before running the above commands.

Finally, the exported `appName` provides the name of the deployed Helm chart as an output, which can be helpful for verifying the deployment or for use in further automation.