Deploy the istio-authorizer helm chart on Digital Ocean Kubernetes Service

Question

Pulumi · Accepted Answer

Deploying the Istio Authorizer Helm chart on the Digital Ocean Kubernetes Service involves several steps. We'll first need to create a Kubernetes cluster in Digital Ocean using Pulumi. Once the cluster is up and running, we'll use Pulumi's Helm chart resource to deploy the Istio Authorizer chart onto this cluster.

Here's a breakdown of the process:

1. **Create a Digital Ocean Kubernetes Cluster**: We'll define a Kubernetes cluster resource. This will specify the number of nodes, their size, and the region where the cluster will be provisioned.

2. **Deploy Istio Authorizer Helm chart**: To deploy Helm charts, we use the `Chart` resource from the Kubernetes provider. We'll specify the chart name, repository, and any configuration parameters needed for the Istio Authorizer.

Let's write a Pulumi program in TypeScript to achieve this. Please ensure you have Pulumi installed and configured for use with Digital Ocean.

We will begin by creating a new Kubernetes cluster:

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

const clusterName = "do-k8s-cluster";

// Create a Kubernetes cluster on Digital Ocean.
const cluster = new digitalocean.KubernetesCluster(clusterName, {
    region: digitalocean.Regions.NYC1, // Change region if required
    version: "latest", // Specify the version or use 'latest'
    nodePool: {
        name: "default",
        size: digitalocean.DropletSlugs.DOS_2vCPU_4GB, // Choose the size appropriate for your workload
        nodeCount: 2, // Specify the number of nodes in the node pool
    },
});

// Export the Kubeconfig and cluster endpoint
export const kubeconfig = cluster.kubeConfigs[0].rawConfig;
export const endpoint = cluster.endpoint;
```

Here, we are defining a Digital Ocean Kubernetes cluster with a specific region and Kubernetes version. We configure the node pool with a specific Droplet size and node count. You may adjust these specifications based on your requirements.

Now that we have the Kubernetes cluster, let's deploy the Istio Authorizer Helm chart:

```typescript
// Create a new kubernetes provider using the kubeconfig from the newly created Digital Ocean cluster
const k8sProvider = new kubernetes.Provider("k8s", {
    kubeconfig: cluster.kubeConfigs[0].rawConfig,
});

// Deploy the Istio Authorizer Helm chart onto the cluster
const istioAuthorizerChart = new kubernetes.helm.v3.Chart("istio-authorizer", {
    // You may need to change the repo and chart name based on where the Istio Authorizer chart is hosted
    repo: "istio",
    chart: "istio-authorizer",
    values: {
        // Define any specific values you need for your Istio Authorizer deployment
    },
}, { provider: k8sProvider });

// Export URLs or other information needed to access the deployed services
export const istioAuthorizerUrl = istioAuthorizerChart.getResourceProperty("v1/Service", "istio-authorizer", "status").apply(status => status.loadBalancer.ingress[0].ip);
```

In this section, we're deploying the Istio Authorizer Helm chart. We use the `Chart` resource from the Kubernetes provider to do so, pointing it to the correct Helm repository and chart. We will also populate the `values` object with any custom configuration required for the Istio Authorizer. Note that you might need to update the chart name or repository details depending on where the Istio Authorizer chart is actually located.

Finally, we are exporting a property that might contain the URL or other access information for the services that Istio Authorizer provides. The actual properties you need will depend on the chart itself, and you might need to adjust this based on your actual chart's outputs.

To run this Pulumi program, save the code above in a file named `index.ts`. Then, execute the following commands in your terminal:

```bash
pulumi up
```

This will prompt you to confirm the deployment after showing you a preview of the resources Pulumi will create. If everything looks alright, proceed with the deployment. Once completed, Pulumi will output the kubeconfig and endpoint of the Kubernetes cluster, and it will begin the Istio Authorizer Helm chart deployment.

Remember, due to the asynchronous nature of cloud resources provisioning, you might need to wait a couple of minutes before the cluster is fully set up and ready for the Helm chart deployment.