Deploy the typo3scan helm chart on Oracle Kubernetes Engine (OKE)

Question

Pulumi · Accepted Answer

To deploy the Typo3scan Helm chart on Oracle Kubernetes Engine (OKE), you will need to follow these steps:

1. **Set up OCI provider**: Ensure you have the Oracle Cloud Infrastructure (OCI) Pulumi provider configured to interact with your OCI account.
2. **Create an OKE cluster**: Provision an Oracle Kubernetes Engine cluster where your application will be deployed.
3. **Deploy a Helm chart**: Use the Helm Pulumi resource to deploy the Typo3scan Helm chart onto your OKE cluster.

Here's a Pulumi program written in TypeScript that performs these steps:

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

// Step 1: Ensure you've configured the OCI provider credentials through the Pulumi config
// or environment variables like OCI_REGION, OCI_TENANCY_OCID, etc.

// Step 2: Create an Oracle Kubernetes Engine (OKE) Cluster
const okeCluster = new oci.ContainerEngine.Cluster("okeCluster", {
    compartmentId: "your-compartment-ocid", // Replace with your Compartment OCID
    kubernetesVersion: "v1.21.0", // Specify the desired K8s version
    // Other necessary configuration for your OKE Cluster (VCN, subnet, etc.)
});

// Step 3: Install the Typo3scan chart using the Helm Chart resource
const k8sProvider = new k8s.Provider("okeK8s", {
    kubeconfig: okeCluster.kubeconfig, // This assumes kubeconfig output is available from the OKE cluster
});

const typo3scanChart = new k8s.helm.v3.Chart("typo3scan", {
    chart: "typo3scan",
    version: "1.0.0", // Specify the version of the Helm chart
    namespace: "default", // Choose an appropriate namespace
}, { provider: k8sProvider });

// Export the Kubernetes config to access the cluster
export const kubeconfig = okeCluster.kubeconfig;
```

**Detailed Explanation**:

- The OCI provider is configured implicitly in the Pulumi program using credentials obtained from the environment or the Pulumi configuration system.
- An OKE cluster is created using the `oci.ContainerEngine.Cluster` class provided by the `@pulumi/oci` package. You need to enter your compartment OCID and any other configurations necessary for creating the OKE cluster, such as the VCN and subnet OCIDs.
- For the Helm chart deployment part, we instantiate a Kubernetes provider (`k8s.Provider`) with kubeconfig obtained from the `okeCluster` which allows Pulumi to connect to our OKE cluster.
- Then, we deploy the Typo3scan Helm chart using the `k8s.helm.v3.Chart` class. You need to specify the version of the Helm chart you want to install. This Pulumi resource represents a collection of Kubernetes resources as defined by a Helm Chart. It will pull the Typo3scan chart from the specified Helm repository (if it's not in the default Helm repo, you must specify the `repo` property) and deploy it in the default Kubernetes namespace (you can change this if needed).
- Finally, we export the kubeconfig from the OKE cluster so you can interact with your Kubernetes cluster using `kubectl` or other tools.

Make sure you replace placeholder values like `your-compartment-ocid` with actual values from your OCI environment. You will also need Typo3scan Helm chart details like its repository URL and chart version. If the Typo3scan Helm chart is not in the default Helm repository, you need to add its repository to the `k8s.helm.v3.ChartArgs`.

**Please Note**:

- Before running this Pulumi program, ensure that you have the Pulumi CLI installed and configured for OCI.
- Replace placeholders with the correct values for your OCI setup, including the Compartment OCID and Kubernetes version.
- Use proper access control and security practices when deploying resources into your cloud environment, which might include setting up a private network and only giving necessary IAM permissions.
- Run `pulumi up` to deploy the resources when your Pulumi program is ready.

This is a basic deployment, and depending on your specific requirements, you might need to configure additional properties or resources.