Deploy the rclone-s3 helm chart on Oracle Kubernetes Engine (OKE)

Question

Pulumi · Accepted Answer

To deploy the `rclone-s3` Helm chart on Oracle Kubernetes Engine (OKE) using Pulumi, we need to follow these steps:

1. **Set up Oracle Kubernetes Engine (OKE)**: Before deploying any applications, you require an OKE cluster. If you already have one, you can skip this step. Otherwise, you'll need to use the OCI provider to create one.

2. **Deploy the Helm Chart**: Once you have a Kubernetes cluster, you can deploy Helm charts using the `kubernetes` provider with Pulumi. You'll use the `Chart` resource to deploy `rclone-s3`.

For ease of understanding, let's break this down into Pulumi program steps. First, ensure you have Pulumi and the necessary CLI tools installed (`oci`, `kubectl`, and `helm`). Ensure you're authenticated against OCI and have your kubeconfig correctly set.

Here's a detailed Pulumi program written in TypeScript that shows these steps in action:

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

// Before running this code, make sure you've set the required OCI configuration.
// Your kubeconfig should be correctly setup to point to your OKE cluster.

// Step 1: Ensure a Kubernetes cluster exists in OKE
// Assuming you have an existing OKE cluster named `myOKECluster` in the compartment with the OCID of `compartmentOCID`.
const clusterOcid = "ocid1.cluster.oc1..unique-cluster-id";  // Replace with your cluster's OCID
const compartmentOcid = "ocid1.compartment.oc1..unique-compartment-id";  // Replace with your compartment's OCID

const myCluster = oci.core.GetCluster({
    clusterId: clusterOcid,
    compartmentId: compartmentOcid,
});

// We are assuming the kubeconfig is already configured for Pulumi to communicate with the OKE

// Step 2: Deploy the rclone-s3 Helm chart on the Kubernetes cluster
const rcloneS3Chart = new k8s.helm.v3.Chart("rclone-s3", {
    chart: "rclone-s3",
    // Specify the Helm repository URL if the chart is not in the default Helm repos
    fetchOpts: { 
        repo: "https://charts.yourrepo.com/",  // Replace with correct Helm repo URL if needed
    },
    // Override default values here if needed
    values: {
        // ... add your configuration values for rclone-s3 chart
    },
}, { provider: k8sProvider }); // Ensure that the k8s provider is configured to use the kubeconfig from your OKE cluster

// Export the public IP to access the rclone-s3 service
export const serviceIp = rcloneS3Chart.getResourceProperty("v1/Service", "rclone-s3", "status").apply(status => status.loadBalancer.ingress[0].ip);

```

In this program:

- **OCI Kubernetes Cluster**: We reference an existing Oracle Kubernetes Engine cluster by its OCID. You need to replace `clusterOcid` with your actual cluster OCID and `compartmentOcid` with your compartment OCID.

- **Helm Chart for rclone-s3**: The program assumes that the Helm chart `rclone-s3` is available in a chart repository. If `rclone-s3` is not a public chart, you'd need to provide the URL to your private Helm repository in `fetchOpts.repo`.

- **Helm Chart Values**: Helm charts have configurable values that you can override during deployment. This example includes a placeholder where you can specify such configurations (e.g., credentials, bucket details, and more specific settings for the `rclone-s3` deployment).

- **Kubernetes Provider**: The `k8sProvider` object should be created using the kubeconfig file generated by OKE so that Pulumi can interact with your cluster. The example assumes that the kubeconfig has been set up outside the program.

- **Service IP Export**: We are exporting the IP address that will be assigned to the `rclone-s3` service. This allows you to connect to your deployed application from outside the Kubernetes cluster.

Before running `pulumi up`, replace placeholders with the actual values relevant to your OKE setup and Helm chart needs. If you're deploying a new cluster, you will need a more comprehensive setup, including creating a VCN, node pool resources, etc., which was omitted here for brevity and because you mentioned the deployment of the Helm chart specifically.