Deploy the provider-openstack helm chart on Azure Managed Openshift Service

Question

Pulumi · Accepted Answer

To deploy the `provider-openstack` Helm chart on Azure Managed OpenShift Service, you will first need to create an OpenShift cluster on Azure. After setting up the cluster, you can then use Pulumi's Kubernetes package to deploy a Helm chart.

The Pulumi code below is structured into two main parts: 
1. Creating an Azure Red Hat OpenShift cluster.
2. Deploying the `provider-openstack` Helm chart on the created OpenShift cluster.

### Prerequisites

- Ensure you have Pulumi CLI installed.
- Ensure you have Azure CLI installed and configured.
- Make sure that you have an Azure subscription and have the necessary permissions to create resources.

### Pulumi Program

Below is the full TypeScript program to deploy the `provider-openstack` Helm chart on Azure Managed OpenShift Service.

```typescript
import * as azure from "@pulumi/azure";
import * as azuread from "@pulumi/azuread";
import * as k8s from "@pulumi/kubernetes";
import * as pulumi from "@pulumi/pulumi";
import * as azureNative from "@pulumi/azure-native";

// Step 1: Create Azure Red Hat OpenShift cluster

// Create an Azure Resource Group
const resourceGroup = new azure.core.ResourceGroup("openshiftResourceGroup");

// Create an Azure AD Application for the OpenShift cluster
const openshiftApp = new azuread.Application("openshiftAdApp");

// Create a Service Principal for the OpenShift AD Application
const openshiftServicePrincipal = new azuread.ServicePrincipal("openshiftSp", {
    applicationId: openshiftApp.applicationId,
});

// Create a Service Principal Password for the OpenShift Service Principal
const openshiftServicePrincipalPassword = new azuread.ServicePrincipalPassword("openshiftSpPassword", {
    servicePrincipalId: openshiftServicePrincipal.id,
    value: "superstrongpassword", // Recommended to use Pulumi's secret management
    endDate: "2099-01-01T00:00:00Z", // Arbitrary expiry date far in the future
});

// Create an OpenShift Managed Cluster
const openshiftCluster = new azure.containerservice.OpenShiftManagedCluster("openshiftCluster", {
    resourceName: "myOpenshiftCluster",
    resourceGroupName: resourceGroup.name,
    location: resourceGroup.location,
    openShiftVersion: "4.6", // Specify your desired OpenShift version
    tags: {
        environment: "Production",
    },
    networkProfile: {
        vnetCidr: "10.0.0.0/8",
    },
    masterPoolProfile: {
        name: "master",
        count: 3,
        vmSize: "Standard_D4s_v3",
    },
    agentPoolProfiles: [{
        name: "agentpool",
        count: 3,
        vmSize: "Standard_D4s_v3",
    }],
    servicePrincipalProfile: {
        clientId: openshiftServicePrincipal.applicationId,
        secret: openshiftServicePrincipalPassword.value,
    },
});

// Step 2: Deploy the provider-openstack Helm chart on the created OpenShift cluster

// Create a Pulumi Kubernetes Provider referencing the OpenShift cluster
const k8sProvider = new k8s.Provider("openshiftK8sProvider", {
    kubeconfig: openshiftCluster.kubeConfigRaw,
});

// Deploy the provider-openstack Helm chart
const openstackHelmChart = new k8s.helm.v3.Chart("providerOpenstackChart", {
    chart: "provider-openstack",
    version: "1.2.3", // Specify the chart version you wish to deploy
    fetchOpts: {
        repo: "https://charts.example.com/", // Substitute with the actual Helm chart repository URL
    },
}, { provider: k8sProvider });

// Export the kubeconfig and chart name as an output
export const kubeConfig = openshiftCluster.kubeConfigRaw;
export const chartName = openstackHelmChart.metadata.name;
```

To deploy this Pulumi program:
1. Save the code to a file named `index.ts`.
2. Run `pulumi up` to create the resources and deploy the Helm chart.

Please note that in the above program, we create an Azure Active Directory (AD) application and service principal which the OpenShift cluster will use for Azure integrations, such as Load Balancers and Managed Disks. The service principal's password is hardcoded in this example, but in a production scenario, you would use Pulumi's secrets management so that the password is not stored in plaintext.

Additionally, you should use the actual repository URL from where the `provider-openstack` Helm chart can be fetched. If this chart requires specific values, you can provide them in the `values` field within the `openstackHelmChart` definition.

Keep in mind that creating an OpenShift cluster can take significant time to complete and will incur costs on your Azure subscription. Always review and understand the billing implications before provisioning resources on any cloud provider.