Deploy the terraform-cloud helm chart on Azure Managed Openshift Service

Question

Pulumi · Accepted Answer

To deploy the `terraform-cloud` Helm chart on an Azure Managed OpenShift Service, you will need to perform several steps that include setting up an Azure Red Hat OpenShift Cluster and deploying the Helm chart onto the cluster.

Below is an outline of the process:
1. **Create an Azure Red Hat OpenShift Cluster**: Using Pulumi's `azure-native.redhatopenshift.OpenShiftCluster` resource, you create a managed OpenShift cluster in Azure.
2. **Deploy the Helm Chart**: With the Kubernetes Pulumi provider, you use the `kubernetes.helm.v3.Chart` resource to deploy the `terraform-cloud` Helm chart onto the created OpenShift cluster.

Both of these steps involve detailed configurations which may need to be adjusted to fit your specific requirements, such as cluster size, region, or Helm chart version and settings.

Here is a Pulumi TypeScript program that outlines this process:

```typescript
import * as pulumi from '@pulumi/pulumi';
import * as azure from '@pulumi/azure-native';
import * as k8s from '@pulumi/kubernetes';
import * as openshift from '@pulumi/azure-native/redhatopenshift';

// Step 1: Create an Azure Red Hat OpenShift Cluster
const openshiftCluster = new openshift.OpenShiftCluster('my-openshift-cluster', {
    // Use the Pulumi configuration system or replace these with actual values
    resourceGroupName: 'myResourceGroup', // Make sure this resource group is already created
    resourceName: 'myCluster',
    location: 'eastus', // Change to the location where you want to create your cluster
    openShiftVersion: '4.3', // Specify the version of OpenShift
    masterProfile: {
        vmSize: 'Standard_D8s_v3',
        subnetId: pulumi.interpolate`/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Network/virtualNetworks/{vnetName}/subnets/{subnetName}`,
    },
    workerProfiles: [{
        name: 'worker',
        vmSize: 'Standard_D2s_v3',
        count: 3,
        subnetId: pulumi.interpolate`/subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Network/virtualNetworks/{vnetName}/subnets/{subnetName}`,
    }],
});

// Step 2: Deploy the Helm Chart to the Azure Red Hat OpenShift Cluster
const kubeconfig = openshiftCluster.kubeconfig.apply(JSON.parse); // Extract the kubeconfig from the created OpenShift Cluster

const provider = new k8s.Provider('openshift-k8s', {
    kubeconfig: kubeconfig,
});

const chart = new k8s.helm.v3.Chart('terraform-cloud', {
    chart: 'terraform-cloud',
    version: '0.1.0', // Specify the chart version if necessary
    fetchOpts: {
        repo: 'https://helm.releases.hashicorp.com', // Repository URL of the terraform-cloud Helm chart
    },
}, { provider });

// Export the OpenShift cluster's API server URL and the Helm release status
export const openShiftApiServerUrl = openshiftCluster.apiServerUrl;
export const helmReleaseStatus = chart.status;
```

Remember, before running the `pulumi up` command to deploy this program, ensure you have the appropriate Pulumi stack selected and that your Azure credentials are set up correctly for Pulumi to communicate with your Azure subscription.

Please adjust the configuration options like resource group name, location, OpenShift version, VM sizes, and subnet IDs to correspond with your Azure environment and prerequisites. You should also have a preceding process or resources handling the infrastructure for networking, such as the VNet and subnet resources where the cluster will reside.

The Kubernetes provider instance is configured to use the kubeconfig from the created OpenShift Cluster, which allows us to interact with our cluster using Pulumi's Kubernetes provider.

The Helm chart is instantiated with a specific chart name and version. Ensure that the version and repository URL matches the actual Helm chart details for `terraform-cloud` you intend to deploy.

After successfully deploying this program with Pulumi, the outputs will be the URL of the OpenShift API server and the status of the Helm release, which can be used to access and manage the OpenShift cluster and verify the deployment of the Helm chart.