Deploy the ueb-listener helm chart on Linode Kubernetes Engine

Question

Pulumi · Accepted Answer

To deploy a Helm chart on a Kubernetes cluster using Pulumi, we'll follow these steps:

1. **Set up a Kubernetes cluster**: First, we need a Kubernetes cluster. Since you want to deploy to the Linode Kubernetes Engine (LKE), you would set up an LKE cluster, which typically involves creating a cluster and configuring `kubeconfig` to interact with it. You need to have your Linode API token ready and the LKE cluster created. Pulumi does not currently have a native provider for Linode, but you can manage LKE using Terraform's Linode provider and its bridge to Pulumi.

2. **Install the Helm Chart**: We will use the `kubernetes.helm.v3.Chart` resource to deploy the `ueb-listener` Helm chart. This resource is a representation of a Helm chart in Pulumi's Kubernetes provider, which allows you to deploy Helm charts in a Pulumi program.

3. **Configure and Deploy**: We'll configure our Helm chart deployment, such as setting the chart name, version, and any custom values required for the chart. Once configured, we'll run our deployment using the `pulumi up` command.

Below is a TypeScript program that illustrates deploying a Helm chart to an existing Kubernetes cluster:

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

// Assume that the Linode Kubernetes cluster is already created and kubeconfig is set up properly.

// Define the ueb-listener Helm chart. Replace `chart` and `version` with the correct values for ueb-listener.
const uebListenerChart = new k8s.helm.v3.Chart('ueb-listener', {
    chart: 'ueb-listener', // The name of the chart. Replace with the actual chart name if different.
    version: '1.0.0', // Specify the version of the chart you want to deploy.
    fetchOpts: {
        // If the Helm chart is in a private repo or one that's not added to your Helm repo list, configure as needed:
        repo: 'https://example.com/helm-charts', // Replace with the actual Helm chart repository URL.
    },
    // If the chart requires any specific configuration values, set them here:
    values: {
        // Replace these with actual configuration values required by the ueb-listener chart.
        service: {
            type: 'LoadBalancer',
        },
    },
});

// If you need to export any resulting resources' properties, use `export` like the following:
export const serviceName = uebListenerChart.getResourceProperty('v1/Service', 'ueb-listener', 'metadata').apply(m => m.name);
export const serviceStatus = uebListenerChart.getResourceProperty('v1/Service', 'ueb-listener', 'status').apply(s => s.loadBalancer.ingress);

// To deploy, navigate to the directory containing this file and run:
// `pulumi up`
// Pulumi will perform the deployment according to the configuration provided above.
```

This program deploys the `ueb-listener` Helm chart onto a Kubernetes cluster. You must replace `'https://example.com/helm-charts'` with the URL of the Helm repository where the `ueb-listener` chart is located and adjust the `version` and configuration in `values` to suit the specific version and configuration of your Helm chart.

Once your Pulumi program is ready, run `pulumi up` within the directory containing your Pulumi TypeScript program. This command will initiate the deployment process, and you will see the live updates as resources are created or modified.

Remember, before you run `pulumi up`, ensure you have set the `KUBECONFIG` environment variable or that your kubeconfig file is in the default location (`~/.kube/config`), and Pulumi is properly installed and configured with access to Linode if necessary.