Deploy the mqtt-connector helm chart on Azure Kubernetes Service (AKS)

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Pulumi · Accepted Answer

To deploy the mqtt-connector Helm chart on Azure Kubernetes Service (AKS), you need an AKS cluster and Helm, which is a package manager for Kubernetes. Pulumi provides a way to create these resources declaratively using TypeScript. Below, I'll walk you through the process of:

Creating an AKS cluster.
Installing the mqtt-connector Helm chart on this cluster.

You need to have the Pulumi CLI installed and an Azure account configured with appropriate permissions to create these resources.

Creating an AKS Cluster

With Pulumi, we'll begin by creating a new AKS cluster. We'll use the azure-native provider as it's the direct mapping of the Azure API into Pulumi, which gives you the most recently available features of Azure.

Installing the mqtt-connector Helm chart

After setting up the AKS cluster, we'll then deploy the mqtt-connector Helm chart into the AKS cluster. Pulumi's Kubernetes provider is used to interact with Kubernetes' resources, including Helm charts.

Let's start writing our Pulumi program:

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

// Step 1. Create the AKS cluster
const resourceGroupName = new azure.resources.ResourceGroup("myResourceGroup");

const aksCluster = new azure.containerservice.ManagedCluster("myAKSCluster", {
    resourceGroupName: resourceGroupName.name,
    agentPoolProfiles: [{
        count: 1,
        // Specify the size of the virtual machines that will run the AKS nodes.
        vmSize: azure.containerservice.VMSizeTypes.Standard_DS2_v2,
        mode: "System",
        name: "agentpool",
    }],
    dnsPrefix: pulumi.interpolate(`${resourceGroupName.name}-kube`),
    // Enable RBAC for the cluster
    enableRBAC: true,
    // Define the properties for the Kubernetes cluster, like the version.
    kubernetesVersion: "1.18.14",
});

// Export the kubeconfig
export const kubeconfig = aksCluster.kubeConfigRaw;

// Step 2. Install the mqtt-connector Helm chart
const helmChart = new k8s.helm.v3.Chart("mqtt-connector", {
    chart: "mqtt-connector",
    version: "x.y.z", // Replace with the specific chart version you need
    fetchOpts: {
        repo: "https://<repository-url>", // Replace with the Helm repository URL where the mqtt-connector chart is located
    },
    // Specify namespace if needed
    namespace: "default",
    // Set any values here that are necessary for your Helm chart
    values: {},
}, { provider: new k8s.Provider("k8s-provider", { kubeconfig: aksCluster.kubeConfigRaw }) });

Explanation:

ResourceGroup: This line creates an Azure resource group, which is a container for resources in Azure.
ManagedCluster: This resource represents the AKS cluster. It specifies details such as the number and size of nodes, enabling RBAC for Kubernetes, and the Kubernetes version to use.
kubeConfigRaw: This output contains the kubeconfig information needed to connect to the AKS cluster with kubectl. It's exported so you can easily grab it from the Pulumi stack outputs.
Chart: This resource is part of Pulumi's Kubernetes provider and represents a Helm chart. You must specify details about where to fetch the Helm chart and any customization through values.

Replace x.y.z and https://<repository-url> with the appropriate version and repository URL for the mqtt-connector Helm chart.

After you've written your code, you run it using the Pulumi CLI. Pulumi will handle provisioning the resources on Azure and deploying the Helm chart to the AKS cluster.

To apply the above Pulumi code, run the following commands in your terminal in the same directory as your code:

pulumi stack init dev
pulumi up

The pulumi stack init command initializes a new stack for your project, which represents an isolated environment for your infrastructure. The pulumi up command actually deploys your resources as described in the code above.

Make sure to review the proposed changes before confirming them when prompted by Pulumi. After the deployment is complete, Pulumi will output the kubeconfig which you can use to interact with your AKS cluster.

Remember, you need proper permissions and the Pulumi CLI configured with Azure to create and manage these resources. If you don't have the Helm chart for the mqtt-connector, you'll have to add it to your Helm repositories or specify the path to the chart in your code.