Deploy the terraform-cloud helm chart on Oracle Kubernetes Engine (OKE)

Question

Pulumi · Accepted Answer

To deploy the Terraform Cloud Helm chart on Oracle Kubernetes Engine (OKE), you will need to complete several steps using Pulumi:

1. **Set up an Oracle Kubernetes Engine (OKE) cluster**: We will create an OKE cluster if you don't already have one set up.
2. **Configure Helm and Kubernetes providers**: We will configure providers in Pulumi to interact with Helm and Kubernetes.
3. **Deploy the Helm chart**: We will use the Pulumi Helm chart resource to deploy the Terraform Cloud Helm chart to your OKE cluster.

### Setting Up the Oracle Kubernetes Engine Cluster

Before you can deploy any applications on OKE, you will need a running cluster. If you've already set up an OKE cluster, you can skip to "Configuring Helm and Kubernetes Providers." Otherwise, you can create a cluster using the `oci.ContainerEngine.Cluster` resource.

Here is a program that defines an OKE cluster:

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

// Create an OKE cluster.
const cluster = new oci.containerengine.Cluster("okeCluster", {
    // Replace these with the appropriate values for your OCI environment.
    compartmentId: "YOUR_OCI_COMPARTMENT_ID",
    vcnId: "YOUR_VCN_ID",
    kubernetesVersion: "v1.21.0", // Use the version that suits your requirements.
    options: {
        serviceLbSubnetIds: ["YOUR_LB_SUBNET_ID_1", "YOUR_LB_SUBNET_ID_2"],
        // Additional options can be specified based on your requirements.
    },
    // It's good practice to tag your resources.
    freeformTags: {
        "Project": "TerraformCloudDeployment"
    },
});
```

In this code, replace the `YOUR_OCI_COMPARTMENT_ID`, `YOUR_VCN_ID`, and `YOUR_LB_SUBNET_ID_*` placeholders with the actual IDs from your setup.

### Configuring Helm and Kubernetes Providers

After setting up OKE, configure the Pulumi Helm and Kubernetes providers to interact with your cluster. Typically, you'd set up the Kubernetes provider to point to your newly created OKE cluster.

Here's how to do that:

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

// Assuming you have set up your kubeconfig file correctly to interact with the OKE cluster.
const k8sProvider = new k8s.Provider("okeProvider", {
    kubeconfig: "YOUR_KUBECONFIG_FILE_CONTENTS",
});
```

This code assumes that you have the kubeconfig file for your OKE cluster ready. Replace `YOUR_KUBECONFIG_FILE_CONTENTS` with the actual contents of your kubeconfig file.

### Deploy the Helm Chart

Now you can deploy the Terraform Cloud Helm chart to your OKE cluster using the `helm.v3.Chart` resource in Pulumi:

```typescript
// Deploy the Terraform Cloud Helm chart to your OKE cluster using Helm.
const terraformCloudChart = new helm.v3.Chart("terraform-cloud", {
    chart: "terraform-cloud",
    // Specify the Helm repo URL where the Terraform Cloud chart is located.
    // Example: "https://helm.releases.hashicorp.com"
    fetchOpts: {
        repo: "HELM_CHART_REPO_URL",
    },
}, { provider: k8sProvider });
```

Replace `HELM_CHART_REPO_URL` with the actual Helm repository URL for the Terraform Cloud chart.

After you've written this program, you can deploy the resources to OCI by running `pulumi up` from your CLI. Pulumi will communicate with OCI to create the resources as per the specifications in your program.

Make sure you have the Pulumi CLI installed and configured with the appropriate cloud provider credentials before running your Pulumi programs.

Please note that this is a basic setup. Managing real infrastructure requires handling more considerations such as networking, security, state storage, and more. Always ensure your code adheres to best practices and security standards.

Remember the actual deployment might require additional configurations such as setting values for the Helm chart, depending on the specific Helm chart you are using.

Once the deployment is successful, use the output from Pulumi or the Kubernetes dashboard to interact with your deployed services.