Deploy the pmm-server helm chart on Azure Kubernetes Service (AKS)

Question

Pulumi · Accepted Answer

To deploy the `pmm-server` Helm chart on an Azure Kubernetes Service (AKS) cluster using Pulumi, we will follow these steps:

1. Create an AKS cluster: We need a Kubernetes cluster where we can deploy our Helm chart. An AKS cluster is a managed container service provided by Azure that simplifies running Kubernetes.

2. Install the Helm chart: Once we have our Kubernetes cluster, we can use Pulumi to deploy the `pmm-server` Helm chart. Helm charts are packages of pre-configured Kubernetes resources that can be deployed as a unit.

3. Configure the deployment: We may need to supply certain configurations specific to the `pmm-server` Helm chart, such as resource limits or the number of replicas.

Let's go through the Pulumi program which will implement this deployment in TypeScript:

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

// Create an Azure Resource Group
const resourceGroup = new azure.core.ResourceGroup("aksResourceGroup", {
    location: "East US",
});

// Create an Azure AD application for the AKS cluster
const app = new azuread.Application("aks");

// Create a Service Principal for the AKS cluster
const sp = new azuread.ServicePrincipal("aksSp", { applicationId: app.applicationId });

// Create the Service Principal's password
const spPassword = new azuread.ServicePrincipalPassword("aksSpPassword", {
    servicePrincipalId: sp.id,
    endDate: "2099-01-01T00:00:00Z",
});

// Create the AKS cluster
const cluster = new azure.containerservice.KubernetesCluster("aksCluster", {
    resourceGroupName: resourceGroup.name,
    defaultNodePool: {
        name: "aksagentpool",
        nodeCount: 2,
        vmSize: "Standard_DS2_v2",
    },
    dnsPrefix: "aksk8s",
    servicePrincipal: {
        clientId: app.applicationId,
        clientSecret: spPassword.value,
    },
    // Get access to the k8s cluster credentials
    // to use it with k8s provider afterwards
});

// Export the kubeconfig
export const kubeconfig = cluster.kubeConfigRaw;
// Using Pulumi's Kubernetes provider, we can deploy the Helm chart on our AKS cluster.
const provider = new k8s.Provider("k8sProvider", {
    kubeconfig: cluster.kubeConfigRaw,
});

// Deploy the pmm-server Helm chart
const pmmServerChart = new k8s.helm.v3.Chart(
    "pmm-server",
    {
        chart: "pmm-server",
        // Replace this with the correct repository and chart name for pmm-server
        fetchOpts: {
            repo: "https://your-helm-chart-repository-url",
        },
        // You may need to add additional settings here based on the specifics of the pmm-server chart
    },
    { provider }
);

// Export the Helm chart deployment name
export const helmDeploymentName = pmmServerChart.status.name;
```

Here's a breakdown of what this Pulumi program does:
- Firstly, we import the required Pulumi modules.
- We create a new resource group for our AKS cluster in the designated location.
- We then set up Azure Active Directory (AD) elements: an application and a service principal, which AKS uses to interact with other Azure services securely.
- Subsequently, we create a Kubernetes Cluster in Azure with two nodes. You can adjust the `vmSize` and `nodeCount` based on your workload requirements.
- We extract the raw Kubernetes configuration from the AKS cluster, which allows the Pulumi Kubernetes provider to communicate with our cluster.
- Finally, we define a `Chart` resource, which represents the `pmm-server` Helm chart. Note that you need to replace `https://your-helm-chart-repository-url` with the actual repository URL for the `pmm-server` chart.

Once you deploy this program using Pulumi, it will provision an AKS cluster and deploy the `pmm-server` Helm chart to it. If the `pmm-server` chart requires any specific settings, you will need to add these to the `Chart` resource.

Keep in mind that the specified repository URL and chart name ('pmm-server') should be replaced with the actual Helm chart details from the official Helm chart repository or the one that hosts the `pmm-server` chart.

Lastly, we export the kubeconfig and Helm deployment name so that you can easily access and manage your Kubernetes cluster and Helm chart deployment.