Deploy the distributed-jmeter helm chart on Azure Managed Openshift Service

Question

Pulumi · Accepted Answer

To deploy the distributed-jmeter Helm chart on an Azure Managed OpenShift Service cluster, we'll need to take the following steps:

1. Set up an Azure Managed OpenShift Service cluster.
2. Configure Pulumi to use the Azure provider.
3. Install the Helm chart for distributed-jmeter on the OpenShift cluster.

We'll use two primary resources from the Pulumi Azure Native provider:

- `azure-native.containerservice.OpenShiftManagedCluster`: To create a managed OpenShift cluster in Azure.
- `kubernetes.helm.v3.Chart`: To deploy a Helm chart onto a Kubernetes cluster.

### Setting up the Managed OpenShift Cluster

The `azure-native.containerservice.OpenShiftManagedCluster` resource enables us to create and manage an OpenShift cluster in Azure. This Azure Managed OpenShift service simplifies the deployment, management, and operations of Kubernetes.

Here are the main properties you'll need to set:

- `resourceGroupName`: Specifies the name of the resource group in which to create the cluster.
- `location`: Specifies the location for all resources.
- `openShiftVersion`: Specifies the version of OpenShift.
- `agentPoolProfiles`: Describes properties of the cluster's agent pool.

### Deploying Helm Chart with distributed-jmeter

Once the cluster is up and running, we can deploy the Helm chart. The `kubernetes.helm.v3.Chart` resource is a high-level abstraction that simplifies deploying Helm charts on a Kubernetes cluster. In our case, we'll specify the name of the distributed-jmeter chart, and optionally, we can adjust the `values` property to customize the deployment.

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

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

// Step 1: Create an Azure Managed OpenShift Cluster
const resourceGroup = new azure_native.resources.ResourceGroup("myResourceGroup", {
    location: "EastUS", // Specify the desired location
});

const openshiftCluster = new azure_native.containerservice.OpenShiftManagedCluster("myOpenShiftCluster", {
    resourceGroupName: resourceGroup.name,
    location: resourceGroup.location,
    openShiftVersion: "4.3", // Specify the OpenShift version
    networkProfile: {
        vnetCidr: "10.0.0.0/8",
    },
    masterPoolProfile: {
        count: 3,
        vmSize: "Standard_D4s_v3",
    },
    agentPoolProfiles: [{
        name: "agentpool",
        count: 3,
        vmSize: "Standard_D4s_v3",
        osType: "Linux",
    }],
});

// Step 2: Setting up the K8s provider to point to the OpenShift cluster
// Note: You need to manually configure the Kubernetes CLI with the OpenShift credentials first.
// This typically involves to log in to the cluster using the az CLI or the OpenShift CLI to obtain kubeconfig credentials.
const k8sProvider = new k8s.Provider("k8sProvider", {
    // Use the kubeconfig obtained from your OpenShift cluster
    kubeconfig: process.env.KUBECONFIG,
});

// Step 3: Deploy the distributed-jmeter Helm chart on the OpenShift cluster
const jmeterHelmChart = new k8s.helm.v3.Chart("jmeter", {
    chart: "distributed-jmeter", // Replace with the correct chart name and repository if needed
    // Optional values to configure the Helm chart
    // values: {
    //   service: {
    //     type: "LoadBalancer",
    //   },
    // },
}, { provider: k8sProvider }); // Make sure to pass the provider

// Export the kubeconfig to be used by the Kubernetes provider
export const kubeconfig = openshiftCluster.config.rawConfig;
```

Make sure you've set up the Azure provider and your Kubernetes CLI with the appropriate credentials to communicate with Azure. The `kubeconfig` is expected to be set in your environment; it's what the Kubernetes provider will use to connect to the OpenShift cluster.

You'll also need to adjust the Helm chart details such as `chart`, `version`, `values`, etc., to match the specifics of the JMeter Helm chart that you wish to deploy.

Remember, this script assumes the OpenShift cluster credentials (kubeconfig) are already configured in your environment (most likely via Azure CLI or the OpenShift CLI). You would need to log into the cluster and fetch these credentials after creating the OpenShift cluster. The kubeconfig information is then used to instantiate the Kubernetes provider with the correct configuration to deploy the Helm chart.