Deploy the aws-spot-price-history-poller helm chart on Azure Kubernetes Service (AKS)

Question

Pulumi · Accepted Answer

Deploying a Helm chart that is intended for use with AWS (like an AWS spot price history poller) onto Azure Kubernetes Service (AKS) isn't a typical scenario because the tools and services are optimized for their respective cloud environments. However, you can deploy a generic Helm chart onto AKS using Pulumi's Kubernetes provider. Since the specific Helm chart for polling AWS spot price history may have AWS-specific dependencies, it's important to review and modify the chart to work with AKS if necessary.

Below is an example of how you might use Pulumi to deploy a Helm chart onto AKS along with comments explaining each step. We'll use the kubernetes.helm.v3.Chart resource from Pulumi's Kubernetes provider for this process.

Please ensure that you have followed the prerequisites before executing the Pulumi program:

Install Pulumi CLI.
Configure Pulumi to use your Azure account with az login.
Ensure you have access to an existing AKS cluster or create one.
If the Helm chart you intend to deploy contains configurations specific to AWS, you must modify them to be compatible with Azure where possible.

Here's how you might write the Pulumi program in TypeScript:

import * as pulumi from "@pulumi/pulumi";
import * as kubernetes from "@pulumi/kubernetes";
import * as azure from "@pulumi/azure";

// Create a Kubernetes provider instance that uses the existing AKS cluster.
const aksCluster = new azure.containerservice.KubernetesCluster("aksCluster", {
    // You must configure these parameters according to your requirements.
    // These are example configurations for AKS cluster.
    // Replace with actual values as needed.
});

// Use the resulting kubeconfig from the AKS cluster to interact with it.
const k8sProvider = new kubernetes.Provider("k8sProvider", {
    kubeconfig: aksCluster.kubeConfigRaw,
});

// Deploy the Helm chart onto the AKS cluster.
const helmChart = new kubernetes.helm.v3.Chart("aws-spot-price-history-poller", {
    // Configure chart details here. Chart name and version are examples.
    // You might need to adjust them or provide additional configurations.
    chart: "aws-spot-price-history-poller",
    version: "1.0.0",
    fetchOpts: {
        // Specify the repository that hosts the Helm chart.
        repo: "https://charts.example.com/",
    },
    // Values to override chart defaults, if necessary.
    values: {
        // Example values that you might need to adjust to the target environment.
        // These are indicative and may not be relevant to the actual chart.
        backend: {
            storageAccount: "<azure-storage-account-name>",
            storageAccessKey: "<azure-storage-access-key>",
        },
        schedule: "0 * * * *", // Run every hour.
    },
}, { provider: k8sProvider }); // Ensure to use the provider that points to AKS.

// Export the public IP to access the deployed chart, if applicable.
export const publicIP = helmChart.getResourceProperty("v1/Service", "aws-spot-price-history-poller-service", "status").apply(status => status.loadBalancer.ingress[0].ip);

Here's what's happening in the program above:

First, import the necessary Pulumi packages to work with Kubernetes resources and to interact with the Azure cloud.
Define the aksCluster resource, which refers to the AKS cluster that is either previously provisioned or to be provisioned with Pulumi.
Create a Kubernetes provider called k8sProvider that uses the kubeconfig to communicate with the AKS cluster.
Instantiate a Helm chart resource using kubernetes.helm.v3.Chart. This resource is named aws-spot-price-history-poller (after the desired Helm chart). You specify the chart name, version, and the repository URL where the chart is hosted.
The values property allows you to set configuration values required by the Helm chart. Since this is an example, the values given are placeholders you should replace with actual values required by your Helm chart. It could be the case that some values are specific to AWS, such as configurations that point to AWS resources, which would need to be changed to their Azure equivalents (or omitted if they are not applicable).
Finally, we try to export the public IP from the Kubernetes Service created by the Helm chart. This allows us to access the service externally if the service type is LoadBalancer. However, the actual resource kind (v1/Service) and name (aws-spot-price-history-poller-service) may vary based on your Helm chart's definitions.

Please note: If the aws-spot-price-history-poller Helm chart is not compatible or not available for AKS, you should look for a similar Helm chart that serves the purpose in AKS or consider writing one customized for Azure if it's within your capabilities. Additionally, if the Helm chart tries to interact with AWS services, you might need additional configurations or credentials to ensure the correct permissions and network configurations are in place for cross-cloud communication.