Deploy the prometheus-rules helm chart on Azure Managed Openshift Service

Question

Pulumi · Accepted Answer

To deploy the `prometheus-rules` Helm chart on an Azure Managed OpenShift Service using Pulumi, you'll need to follow these steps:

1. Create a Managed OpenShift Cluster in Azure using the `azure-native.containerservice.OpenShiftManagedCluster` resource.
2. Deploy the Helm chart using the `kubernetes.helm.sh/v3.Chart` resource.

Before starting, ensure you have the Pulumi CLI installed and configured with Azure credentials. For Kubernetes-related resources, you will also need to have `kubectl` configured to interact with your Azure OpenShift cluster.

Here is a program 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";
import { Input } from "@pulumi/pulumi";

// Create an Azure Resource Group
const resourceGroup = new azure_native.resources.ResourceGroup("resourceGroup");

// Create an Azure OpenShift Managed Cluster
const openShiftCluster = new azure_native.containerservice.OpenShiftManagedCluster("openShiftCluster", {
    resourceGroupName: resourceGroup.name,
    // ... other required properties like location, network profile, etc.
});

// Export the kubeconfig for the OpenShift cluster
const kubeConfig = openShiftCluster.kubeconfig.apply(cfg => Buffer.from(cfg, "base64").toString());

// Create a Pulumi Kubernetes provider using the kubeconfig
const k8sProvider = new k8s.Provider("k8sProvider", {
    kubeconfig: kubeConfig,
});

// Deploy the prometheus-rules Helm chart using the Kubernetes provider
const prometheusRulesChart = new k8s.helm.v3.Chart("prometheus-rules", {
    chart: "prometheus-rules",
    // ... other properties like chart version, values, and namespace if needed
}, { provider: k8sProvider });

// Export any pertinent information such as the OpenShift Managed Cluster name and Helm chart status
export const clusterName = openShiftCluster.name;
export const helmChartStatus = prometheusRulesChart.status;
```

In the program above:

- We create an Azure Resource Group which serves as a logical container for Azure resources.
- We provision an Azure OpenShift Managed Cluster by declaring a `OpenShiftManagedCluster` resource. You need to provide the necessary properties like location, network profile, which are skipped here for brevity.
- We retrieve the kubeconfig of the managed cluster, which is required to connect `kubectl` and the Pulumi Kubernetes provider to the cluster.
- We establish a Kubernetes provider instance using the kubeconfig of the managed cluster. This lets Pulumi interact with it, deploying resources and querying its state.
- We declare a `Chart` resource, specifying the `prometheus-rules` Helm chart we wish to deploy. You'll need to specify the version and any values to customize the deployment to suit your needs.

Remember to fill in the details such as the OpenShift cluster location, networking profiles, and necessary configurations for the Helm chart that have been skipped here.

The `export` statements at the end of the program are useful to output essential information after deployment, such as the OpenShift cluster name and the status of the Helm chart deployment.

Please ensure proper configurations are passed particularly for network profiles and other specifics of your environment which aren't covered in this outline.