Deploy the regcred helm chart on Oracle Kubernetes Engine (OKE)

Question

Pulumi · Accepted Answer

To deploy the regcred helm chart on Oracle Kubernetes Engine (OKE) using Pulumi, you need to perform several steps:

1. **Set up the OKE Cluster**: First, you'll need to have an OKE cluster running. Pulumi can provision an OKE cluster if you don't already have one.

2. **Configure Pulumi for Oracle Cloud Infrastructure (OCI)**: Pulumi needs the right credentials to interact with OCI.

3. **Install and Configure Helm**: You'll need Helm configured to deploy charts to your Kubernetes cluster.

4. **Create a Helm Release**: With Helm installed and OKE ready, you'll create a Helm Release for deploying the `regcred` chart.

Here's a Pulumi program written in TypeScript that demonstrates these steps. At the end of the deployment, we'll use a Helm chart to deploy `regcred`, which typically contains registry credential secrets for Kubernetes.

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

// Step 1: Provision an OKE cluster (If you have an existing cluster, you can skip this step)
// Replace the details with your own where necessary, like the compartmentId, etc.
const cluster = new oci.ContainerEngine.Cluster("my-oke-cluster", {
    compartmentId: "your-oci-compartment-id",
    kubernetesVersion: "v1.20.11",
    options: {
        serviceLbSubnetIds: ["your-public-subnet-id-1", "your-public-subnet-id-2"],
    },
    // ... other necessary configurations for your OKE cluster
});

// Step 2: Configure Kubernetes provider to point to the OKE cluster
// Assume kubeconfig is already properly configured on your system.
const provider = new k8s.Provider("my-k8s-provider", {
    kubeconfig: cluster.kubeconfig.apply(JSON.stringify),
});

// Step 3: Deploy the regcred Helm chart
// Ensure you have the external Helm repository that contains the regcred chart added to your Helm CLI.
const regcredChart = new k8s.helm.v3.Chart("regcred", {
    chart: "regcred",
    // Specify the version of the chart if necessary
    version: "1.0.0", 
    namespace: "default",
    // Any additional values to customize the regcred chart can be passed here.
    values: {
        // ... values specific to the regcred chart
    },
}, { provider });

// Export the cluster's name and kubeconfig
export const clusterName = cluster.name;
export const kubeconfig = cluster.kubeconfig;

```

This program does the following:
- Provisions an OKE cluster (if you don't have one already). You need to substitute "your-oci-compartment-id", "your-public-subnet-id-1", and "your-public-subnet-id-2" with actual OCI compartment and subnet IDs. Additional cluster configuration parameters would go in place of "... other necessary configurations for your OKE cluster."
- Sets up a Kubernetes provider to interact with the cluster. It assumes you have a kubeconfig file configured for the cluster that Pulumi can use.
- Deploys the `regcred` Helm chart to your Kubernetes cluster using Pulumi's Kubernetes provider. You may need to configure specific values for the chart, which you can specify in the `values` field.

Please ensure to replace placeholder strings with actual resource identifiers and chart versions as per your requirements. If you have questions or need further guidance on specific parts of the program, feel free to ask.