Deploy the uptimerobot helm chart on Azure Kubernetes Service (AKS)

Question

Pulumi · Accepted Answer

To deploy the Uptime Robot Helm chart on AKS using Pulumi, you'll need to achieve the following steps:

1. Provision an Azure Kubernetes Service (AKS) cluster.
2. Install Helm on your local machine to facilitate Helm chart deployment.
3. Use Pulumi's Kubernetes provider to deploy the Uptime Robot Helm chart into the AKS cluster.

Below you'll find a complete Pulumi TypeScript program that shows how you can perform these steps. First, we use the `azure-native` provider to provision an AKS cluster. Then, using the `kubernetes` provider, we deploy the Uptime Robot Helm chart.

Make sure you have both Azure CLI and Pulumi CLI installed and configured for your Azure account. Helm should also be installed locally to work with Helm charts.

Now, let's start with the Pulumi TypeScript program:

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

// Create an AKS cluster
const name = "aksexample";
const resourceGroup = new azure.resources.ResourceGroup("resourceGroup", {
    resourceGroupName: name,
    // Specify the location, or rely on the default location setting
    location: "WestUS", // Example location
});

const cluster = new azure.containerservice.ManagedCluster("cluster", {
    resourceName: name,
    identity: {
        type: "SystemAssigned",
    },
    agentPoolProfiles: [{
        count: 3, // Example node count
        vmSize: "Standard_DS2_v2", // Example VM size
        mode: "System",
        name: "agentpool",
        osType: "Linux",
    }],
    dnsPrefix: `${name}-kube`,
    resourceGroupName: resourceGroup.name,
    // Enable or disable RBAC as per your requirements
    enableRBAC: true,
});

// Export the kubeconfig for the AKS cluster
const creds = pulumi.all([cluster.name, resourceGroup.name]).apply(([clusterName, rgName]) =>
    azure.containerservice.listManagedClusterUserCredentials({
        resourceGroupName: rgName,
        resourceName: clusterName,
    }),
);

const kubeconfig = creds.kubeconfigs[0].value.apply((enc) => Buffer.from(enc, "base64").toString());

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

// Deploy the Uptime Robot Helm chart
const uptimerobotChart = new k8s.helm.v3.Chart("uptimerobot", {
    chart: "uptimerobot",
    version: "1.0.0", // replace with the exact chart version
    fetchOpts: {
        repo: "http://helm.uptimerobot.com/", // replace with the Helm repository containing Uptime Robot chart
    },
    // Specify the necessary values for the chart
    values: { /* Insert required values here */ },
}, { provider: k8sProvider });

// Export the URL for the deployed Uptime Robot service
export const uptimeRobotServiceUrl = pulumi.interpolate`http://${uptimerobotChart.getResource("v1/Service", "uptimerobot", "uptimerobot-service").status.loadBalancer.ingress[0].ip}`;

```

Explanation:

- The resources group is created to manage all the resources for the AKS cluster.

- The AKS cluster's configuration includes the number of nodes (`count`), size of each VM (`vmSize`), and the OS type (`osType`). The `dnsPrefix` is used for the DNS name of the AKS cluster.

- The credentials for the Kubernetes cluster are retrieved with `listManagedClusterUserCredentials`.

- `kubeconfig` is generated and made available to the Kubernetes provider, which will utilize it to communicate with our AKS cluster.

- A Helm chart for Uptime Robot is deployed using the `k8s.helm.v3.Chart` resource, where you specify the chart name, version, and optionally any values that the chart requires.

- Finally, we export the IP address or URL necessary to access the Uptime Robot service, which is Load Balanced over the AKS cluster.

Remember to replace placeholders like `chart version` and `Helm repository` with the correct values.

Deploy this code by running `pulumi up`. Once deployed, you can manage and visualize the stack's resources through Pulumi's web interface—given that you have used your Pulumi account to perform the deployment. You also can view outputs, such as the Uptime Robot service URL, at the terminal or through the Pulumi web interface.