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

Question

Pulumi · Accepted Answer

To deploy the Linkace Helm chart on an Azure Kubernetes Service (AKS) cluster, you'll need to perform these key tasks:

1. **Create an AKS Cluster**: You'll need to provision an AKS cluster where your Helm chart will be deployed. This involves setting up the necessary infrastructure using Azure's native resources for AKS.

2. **Install the Helm Chart**: Once the cluster is running, you'll use the Helm package manager to deploy the Linkace application onto the cluster.

Below is a step-by-step guide and a Pulumi program written in TypeScript that accomplishes these tasks. This program sets up the required infrastructure on Azure and deploys the Linkace application.

### Detailed Explanation

#### Creating the AKS Cluster

First, we'll use the `azure-native.hybridcontainerservice.ProvisionedCluster` resource to create an AKS cluster. This resource defines a Kubernetes cluster hosted within Azure.

We would configure parameters such as the location, size of the nodes (VM size), the number of nodes, and other relevant settings.

#### Deploying the Helm Chart

With the cluster set up, we can deploy the Linkace Helm chart to AKS using Pulumi's Helm Chart resource `kubernetes.helm.sh/v3.Chart`. You need to specify the chart name, repository URL, and any other configuration values that the Linkace chart requires.

#### TypeScript Program

Below is a TypeScript program that does the following:
- It creates an AKS cluster with the specified parameters.
- It deploys the Linkace Helm chart to the AKS cluster.

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

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

// Create an AKS cluster
const aksCluster = new azure_native.hybridcontainerservice.ProvisionedCluster("linkaceCluster", {
    resourceGroupName: resourceGroup.name,
    location: resourceGroup.location, // Deploy in the same location as our resource group
    // You would place your AKS configuration here (such as node count, VM size, etc.)
    properties: {
        // Please replace below with required AKS configurations as needed
    },
});

// Create a Kubernetes provider instance that uses our AKS cluster's credentials
const k8sProvider = new k8s.Provider("linkaceK8s", {
    kubeconfig: aksCluster.properties.kubeConfigRaw,
});

// Deploy the Linkace Helm chart onto our AKS cluster using the Helm provider
const linkaceChart = new k8s.helm.v3.Chart("linkace", {
    repo: "linkace-repo", // Repository where the Linkace chart is located.
    chart: "linkace", // The name of the chart to deploy.
    // Specify any values you want to override, for example
    // values: {
    //     service: {
    //         type: "LoadBalancer"
    //     }
    // }
}, { provider: k8sProvider });

// Export the Kubeconfig and Linkace service endpoint
export const kubeConfig = aksCluster.properties.kubeConfigRaw;
export const linkaceServiceEndpoint = pulumi.interpolate`http://${linkaceChart.getResourceProperty("v1/Service", "linkace", "status").apply(status => status.loadBalancer.ingress[0].ip)}`;
```

### How the Program Works

The program defines two main resources:

1. `linkaceResourceGroup`: This is the Azure Resource Group where all the related resources for the Linkace deployment will reside.

2. `linkaceCluster`: This is the AKS cluster. We included placeholders for the required configurations. In a real-world scenario, you would replace these with actual configurations that match your requirements, such as node types, sizes, and count.

3. `linkaceK8s`: This is a Pulumi Kubernetes provider that allows Pulumi to communicate with the newly created AKS cluster. It uses the kubeconfig file directly from the AKS cluster object, which contains all necessary details for Pulumi to manage resources in the AKS cluster.

4. `linkace`: This is the Linkace Helm chart we are deploying to the AKS cluster. Ensure that you replace the value of `repo` with the actual Helm chart repository URL for Linkace, and adjust the `values` to tailor the deployment to your preference.

### Stack Exports

At the end of the program, it exports two important pieces of information:

1. `kubeConfig`: The Kubernetes config file needed to access your cluster with `kubectl`.

2. `linkaceServiceEndpoint`: The external IP endpoint of the Linkace application, which you can use to access it once it is deployed and running.

### Conclusion

This ThunderDocument provides an example of how to deploy the Linkace Helm chart on AKS using Pulumi and TypeScript. Just remember to replace the placeholder values with actual ones that fit your infrastructure needs.