Deploy the typo3scan helm chart on Rancher

Question

Pulumi · Accepted Answer

To deploy the `typo3scan` helm chart on Rancher using Pulumi, you need to set up a few things. First, you'll need to ensure that you have access to a Kubernetes cluster managed by Rancher, and you have configured Pulumi to communicate with your Rancher instance. Since Rancher is a Kubernetes management platform, we can use Pulumi's Kubernetes provider to deploy Helm charts.

Below is a program written in TypeScript that will deploy the `typo3scan` helm chart on a Kubernetes cluster managed by Rancher. The `@pulumi/kubernetes` package provides the necessary classes and functions to interact with Kubernetes resources, including Helm charts.

In this example, the focus will be on deploying a Helm chart, therefore, it assumes that you have already set up a Rancher Kubernetes cluster and have the kubeconfig file set up for Pulumi to connect to your cluster.

Here's how you can deploy the `typo3scan` helm chart:

1. **Setting Up Pulumi:** Make sure you have installed Pulumi and the Pulumi CLI is configured with the `kubeconfig` of your Rancher-managed Kubernetes cluster.

2. **Creating a New Pulumi Project:** Create a new Pulumi project with `pulumi new` and select the TypeScript template.

3. **Installing Dependencies:** Install the `@pulumi/kubernetes` package using `npm` or `yarn`.

4. **Writing the Pulumi Program:** Define the deployment of the `typo3scan` helm chart in your `index.ts` file.

5. **Deploying the Helm Chart:** Run `pulumi up` to preview and deploy your changes.

Now, let's write the program:

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

// Create a Kubernetes provider instance that uses our existing cluster configured via kubeconfig.
const provider = new k8s.Provider('my-rancher-k8s-provider', {
  kubeconfig: 'your-kubeconfig-here', // Replace with the path to your Rancher kubeconfig file
  // You can also set the kubeconfig using an environment variable (e.g., `KUBECONFIG`)
});

// Deploy the `typo3scan` Helm chart. First, we have to create a Chart resource.
const typo3scanChart = new k8s.helm.v3.Chart('typo3scan', {
    chart: 'typo3scan',
    version: 'chart-version', // Replace with the version you want to deploy
    fetchOpts:{
        repo: 'https://helm-repo-with-typo3scan.com', // Replace with the actual Helm repository URL
    },
    // Define any values you want to override in the chart.
    // This example uses default values; make sure to adjust or add configurations as needed.
    values: {
        service: {
            type: 'ClusterIP',
        },
        // Add other configuration values here as needed.
    },
}, { provider });

// Export any resources that will be needed to access the deployed application.
export const serviceIP = typo3scanChart.getResourceProperty('v1/Service', 'typo3scan', 'status').apply(status => status.loadBalancer.ingress[0].ip);
```

Replace `'your-kubeconfig-here'` with the actual path to your kubeconfig file. This typically isn't normalized as kubeconfig files can contain sensitive information, so it's passed here explicitly. You may also use environment variables to manage the kubeconfig more securely.

The `chart` and `version` properties are placeholders that you would replace with the name and version number of the typo3scan helm chart you wish to deploy. You also need the repository URL that hosts the helm chart.

After defining the chart, you can observe the service IP address being exported. This is the IP address you can use to access your `typo3scan` instance once it’s deployed, though you might need to update the service type based on your ingress setup if you need external access.

Run `pulumi up` from your terminal to start the deployment process. Pulumi will show you a preview of the resources that will be created. If everything looks correct, confirm the deployment, and Pulumi will apply the changes to your cluster.