Deploy the k8s-aws-ebs-tagger helm chart on Oracle Kubernetes Engine (OKE)

Question

Pulumi · Accepted Answer

To deploy the `k8s-aws-ebs-tagger` Helm chart on Oracle Kubernetes Engine (OKE), you will need to perform a set of actions like setting up the required cloud provider (OCI in this case), creating a Kubernetes cluster, and deploying the Helm chart. Below, I'll provide you with a step-by-step guide along with a Pulumi program written in TypeScript to accomplish this.

### Step-by-step guide:

1. **Set up an OCI provider:** This allows Pulumi to interact with your Oracle Cloud Infrastructure (OCI).

2. **Create an OKE cluster:** You'll need to have an OKE cluster set up where you can deploy your applications. Defining the cluster in your Pulumi program will allow the infrastructure to be versioned and managed alongside your applications.

3. **Deploy the Helm chart:** Finally, you'll deploy the `k8s-aws-ebs-tagger` Helm chart to the OKE cluster. Since you're looking to deploy a Helm chart, Pulumi's integration with Kubernetes resources will be utilized.

### Importing Required Modules:

You'll start your Pulumi program by importing the necessary modules. We will use the `@pulumi/oci` package for creating infrastructure in Oracle Cloud.

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

### Setting Up the OCI Provider:

The OCI provider needs to be configured with credentials to deploy and manage resources in your Oracle Cloud account. When using Pulumi, it's recommended that you have your environment set up with the necessary OCI credentials.

### Creating an OKE Cluster:

We'll define an OKE cluster as a resource in our program. This is a minimal setup and you may need to adjust parameters like `compartmentId`, `vcnId`, and others based on your specific OCI setup.

### Deploying the Helm Chart:

Pulumi's Kubernetes provider can deploy Helm charts using a `Chart` resource from the `@pulumi/kubernetes` package. You will need to specify the chart details such as name, repository, and values.

Now, let's piece this together into a full Pulumi program.

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

// Create an OCI provider
const provider = new oci.Provider("oci", {
    // Configuration options for the OCI provider.
    // Make sure your environment is configured with the necessary credentials.
});

// Create an OKE cluster.
const cluster = new oci.ContainerEngine.Cluster("okeCluster", {
    /* Configure your OKE cluster parameters here.
       Make sure you specify the compartmentId, vcnId and any other necessary parameters. */
}, { provider: provider });

const kubeconfig = cluster.kubeconfig // The kubeconfig to access your OKE cluster.

// Use the generated kubeconfig to interact with the cluster.
const k8sProvider = new k8s.Provider("k8sProvider", {
    kubeconfig: kubeconfig,
});

// Deploy your Helm chart to the cluster.
const helmChart = new k8s.helm.v3.Chart("aws-ebs-tagger", {
    chart: "k8s-aws-ebs-tagger",
    // Here you should specify the repository where your Helm chart is located.
    // You'll also need to provide any values in the 'values' property to configure the chart.
    fetchOpts: {
        repo: "http://<helm-chart-repository>/",
    },
}, { provider: k8sProvider });

// Export the cluster name and kubeconfig
export const clusterName = cluster.name;
export const kubeconfigOutput = pulumi.secret(cluster.kubeconfig);
```

### Explanation:

- `oci.Provider`: This sets up the Oracle Cloud Infrastructure (OCI) provider so that Pulumi can manage resources in your Oracle cloud account.

- `oci.ContainerEngine.Cluster`: This resource is used to create and manage an OKE cluster. You would replace placeholder comments with actual values for your cluster configuration.

- `k8s.Provider`: This tells Pulumi how to communicate with the Kubernetes cluster by providing it the kubeconfig that we obtain from the OKE cluster object.

- `k8s.helm.v3.Chart`: This resource is used to deploy a Helm chart to a Kubernetes cluster. The chart depicted is a placeholder and should be updated with the details of the `k8s-aws-ebs-tagger` chart such as the correct repository URL and any configurations needed by the chart.

- `export`: These lines at the end of the program export the cluster name and kubeconfig. The kubeconfig is marked as a secret since it contains sensitive information.

Once you have all the credentials set up and replaced placeholder values with your specific configuration, you can run your Pulumi program to deploy the `k8s-aws-ebs-tagger` helm chart to your OKE cluster.