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

Question

Pulumi · Accepted Answer

To deploy the Octavia Helm chart on Azure Kubernetes Service (AKS), we'll need to perform several steps:

Create an AKS cluster: We need to have a Kubernetes cluster running in Azure. We will use the azure-native.hybridcontainerservice.ProvisionedCluster resource to create an AKS cluster.
Install Helm: Helm is a package manager for Kubernetes which allows for easy installation and management of applications. Helm must be installed on your local machine to interact with the Helm charts.
Deploy the Helm chart: After the AKS cluster is ready and Helm is installed, we will use Helm to deploy the Octavia Helm chart onto the AKS cluster.

Below is a TypeScript program using Pulumi to accomplish these steps:

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

// Create an AKS cluster
const resourceGroupName = new azureNative.resources.ResourceGroup("myResourceGroup", { 
    location: "WestUS", // Set the location for the resource group
});

const aksCluster = new azureNative.hybridcontainerservice.ProvisionedCluster("myAksCluster", {
    resourceGroupName: resourceGroupName.name, // Use the resource group we created above
    location: resourceGroupName.location,
    properties: {
        kubernetesVersion: "1.20.9", // Specify the desired Kubernetes version
        enableRbac: true, // Enable RBAC for the AKS cluster
        agentPoolProfiles: [{
            count: 3, // Desired number of nodes in the node pool
            vmSize: "Standard_DS2_v2", // VM size for the nodes
            osType: azureNative.hybridcontainerservice.OsType.Linux, // Set the OS type
            mode: azureNative.hybridcontainerservice.AgentPoolMode.System, // Mode for the agent pool
        }],
        // Further customization of your AKS cluster configuration can go here
    },
    // Additional options can go here
});

// Set up the Kubernetes provider to connect to the AKS cluster
const k8sProvider = new kubernetes.Provider("k8sProvider", {
    kubeconfig: aksCluster.kubeConfigRaw,
});

// Deploy the Octavia Helm chart
const chart = new kubernetes.helm.v3.Chart("octavia", {
    chart: "octavia", // Name of the chart
    version: "<chart-version>", // Specify the chart version if required
    // Custom values can be set depending on the Helm chart you are deploying
    values: {
        // Insert required values for the Octavia chart
    },
}, { provider: k8sProvider }); // Use the Kubernetes provider linked to AKS

// Export the kubeconfig and the cluster name
export const kubeconfig = aksCluster.kubeConfigRaw;
export const clusterName = aksCluster.name;

Explanation

Let's break down what this program is doing:

Resource Group: We first declare a resource group in Azure to contain our AKS cluster. This is represented by the azureNative.resources.ResourceGroup class.
AKS Cluster: Then, we define an AKS cluster within this resource group using azureNative.hybridcontainerservice.ProvisionedCluster. We specify the version of Kubernetes we want for the cluster, enable RBAC (Role-Based Access Control), and configure the properties for the agent pool, like the number of nodes and VM size.
Kubernetes Provider: A kubernetes.Provider is initialized with the kubeconfig obtained from the AKS cluster, enabling Pulumi to communicate with our AKS cluster.
Helm Chart Deployment: We use a kubernetes.helm.v3.Chart to deploy the Octavia Helm chart. The chart property specifies the name of the chart as it would be referred to in a Helm repository, and values can hold specific configurations for your instance of the chart. Because Helm charts are created by third parties, you'll need to fill in this configuration according to the Octavia chart's requirements.
Outputs: Finally, we export the kubeconfig and clusterName for use outside of Pulumi.

Keep in mind that before running this Pulumi program, you need to have Pulumi installed and configured with access to your Azure cloud account. You will also need to have Helm installed if you want to use helm commands outside of this Pulumi program to manage the chart releases on your AKS cluster.

To deploy this Pulumi program:

Save this code in a file named index.ts.
Run pulumi up to execute the code which provisions the resources as defined.
After the deployment, the required kubeconfig to access your AKS cluster will appear in the output; you can use it to configure kubectl or any other Kubernetes management tool.

Please replace <chart-version> with the appropriate version of the Octavia chart you wish to deploy, and fill the values object with any required chart values that Octavia might need. You can typically find these details in the Helm chart's documentation or by inspecting its values.yaml file.