Deploy the payment-portal helm chart on Oracle Kubernetes Engine (OKE)

Question

Pulumi · Accepted Answer

To deploy a Helm chart on Oracle Kubernetes Engine (OKE) using Pulumi, you would need to:

1. Set up the Oracle Cloud Infrastructure (OCI) provider.
2. Create or use an existing OKE cluster.
3. Use the Helm provider to deploy the chart to the OKE cluster.

Below is a Pulumi program in TypeScript that demonstrates these steps. This program assumes that you've already configured your Pulumi environment with the necessary OCI credentials and that you have an existing OKE cluster. If you don't have an OKE cluster, you'll need to create one either manually through the OCI web console or using Pulumi.

First, you have to import the required Pulumi packages in your program. Make sure to install these packages using npm or yarn before running the program:

```bash
npm install @pulumi/pulumi @pulumi/oci @pulumi/kubernetes
```

Here's a program that deploys a Helm chart to an existing OKE cluster:

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

// Load the required configuration for the OCI provider.
// Ensure that your environment variables are set for OCI.
const provider = new oci.Provider('oci', {
    // You can specify additional options here if needed.
});

// Reference to an existing OKE cluster.
// Replace with the appropriate identifier for your OKE cluster.
const okeClusterId = 'ocid1.cluster.oc1..exampleuniqueID';

// Create a Kubernetes provider instance using the kubeconfig from the OKE cluster.
const k8sProvider = new kubernetes.Provider('okeK8s', {
    kubeconfig: oci.core.getClusterKubeconfig({ clusterId: okeClusterId }).content,
}, { provider: provider });

// Define the Helm chart for the payment portal.
const paymentPortalChart = new kubernetes.helm.v3.Chart('payment-portal', {
    chart: 'payment-portal', // This is the chart name, which you will need to replace with the actual chart name.
    version: '1.0.0',        // Replace with the correct chart version.
    fetchOpts: {
        repo: 'https://charts.example.com/', // Replace with the chart's repository URL.
    },
    // Include additional configuration for the Helm chart if needed.
    values: {
        // Specify the values that configure your payment portal chart.
        // This will depend on the specific chart you are using.
        // For example, you might specify the number of replicas, image versions, resource requests and limits, etc.
    },
}, { provider: k8sProvider });

// Export the endpoint to access the payment portal.
export const paymentPortalEndpoint = paymentPortalChart.getResourceProperty('v1/Service', 'payment-portal-service', 'status').loadBalancer.ingress[0].hostname;
```

Explanation:
- You import the Pulumi OCI package to interact with Oracle Cloud Infrastructure resources.
- You create an OCI provider that is configured using environment variables for authenticating with your OCI account.
- You retrieve the kubeconfig for an existing OKE cluster by its cluster ID. If you don't have a cluster, you need to create one and use its ID.
- You set up a Pulumi Kubernetes provider that uses the kubeconfig to manage resources in the OKE cluster.
- You define a Helm chart resource using the kubernetes.helm.v3.Chart class.
- The `chart` argument specifies the name of your Helm chart, `version` is the version number, and `repo` is the URL of the Helm repository where your chart is located.
- You may need to provide additional configuration under `values`. These are the configurable parameters specific to the Helm chart you are deploying.
- Finally, you export an endpoint that can be used to access the deployed payment portal.

You'll need to replace placeholders such as the chart name, version, and repository URL with the actual values pertaining to your payment portal Helm chart. Additionally, specify the appropriate values to configure the Helm chart according to your needs.

To run this Pulumi program:

1. Save the code in a file with a `.ts` extension, for example, `index.ts`.
2. Ensure you have Pulumi CLI installed and OCI configured with the necessary credentials.
3. Run `npm install` to install the dependencies.
4. Execute `pulumi up` to preview and deploy the changes. Pulumi will perform the deployment and provide you with the outputs.

Remember to check the Helm chart's documentation for specific configurations that may be required and adjust the `values` section accordingly.