1. Deploy the flyteagent helm chart on Azure Kubernetes Service (AKS)


    In order to deploy the flyteagent Helm chart on Azure Kubernetes Service (AKS), you will require a few steps to initially set up an AKS cluster, configure the Kubernetes provider to interact with the cluster, and then use the Helm provider to deploy the chart.

    The following Pulumi program is written in TypeScript. The program performs these steps:

    1. Create an AKS Cluster: The first step is to create a resource for the AKS cluster. This cluster will be the environment where the flyteagent will be deployed.
    2. Use the Kubernetes Provider: The Kubernetes provider is used to interact with the AKS cluster. It requires the Kubeconfig of the AKS cluster to authenticate and interact with it.
    3. Deploy the Helm Chart: With the Kubernetes provider configured, you can then deploy the Helm chart for flyteagent.

    Now let's go through the Pulumi program to achieve this:

    import * as pulumi from '@pulumi/pulumi'; import * as azure from '@pulumi/azure'; import * as k8s from '@pulumi/kubernetes'; import * as azuread from "@pulumi/azuread"; import * as random from "@pulumi/random"; // Step 1: Create a new AKS Cluster. const name = 'flyte'; const config = new pulumi.Config(); const password = new random.RandomPassword("password", { length: 20, special: true, }).result; const resourceGroup = new azure.core.ResourceGroup(`${name}-rg`); const adApp = new azuread.Application(`${name}-app`); const adSp = new azuread.ServicePrincipal(`${name}-sp`, { applicationId: adApp.applicationId }); const adSpPassword = new azuread.ServicePrincipalPassword(`${name}-sp-password`, { servicePrincipalId: adSp.id, value: password, endDate: "2099-01-01T00:00:00Z", }); const k8sCluster = new azure.containerservice.KubernetesCluster(`${name}-aks`, { resourceGroupName: resourceGroup.name, defaultNodePool: { name: "default", nodeCount: 2, vmSize: "Standard_A2_v2", }, dnsPrefix: `${pulumi.getStack()}-kube`, linuxProfile: { adminUsername: "aksuser", sshKey: { keyData: config.require("sshPublicKey") }, }, servicePrincipal: { clientId: adApp.applicationId, clientSecret: adSpPassword.value, }, tags: { environment: "development", }, }); // Export the Kubeconfig export const kubeconfig = k8sCluster.kubeConfigRaw; // Step 2: Configure the Kubernetes provider to use the kubeconfig credentials from AKS. const k8sProvider = new k8s.Provider(`${name}-k8s`, { kubeconfig: k8sCluster.kubeConfigRaw, }); // Step 3: Deploy the Helm chart using the Kubernetes provider const flyteChart = new k8s.helm.v3.Chart(`${name}-flyte`, { chart: "flyte", // You may need to replace the 'repo' property with the URL of the chart repository that hosts the flyteagent chart. repo: "https://flyteorg.github.io/flyte", // Additional chart values can be provided as needed. values: { // Provide any custom values for your Flyte deployment here. }, }, { provider: k8sProvider }); // Export the Flyte endpoint export const flyteEndpoint = pulumi.interpolate`http://${k8sCluster.name}.${resourceGroup.name}.cloudapp.azure.com`;

    Explanation of the Pulumi Program:

    Resource Group: We create an Azure Resource Group, which is a container that holds related resources for an Azure solution.

    AD Application and Service Principal: These Azure resources are necessary for AKS to interact with other Azure services securely. The service principal is used by the AKS cluster to access Azure APIs and perform management operations.

    Kubernetes Cluster: We instantiate a K8S cluster managed by AKS. We specify the size and number of nodes for the default node pool, Linux admin username, SSH public key, and the service principal credentials.

    Kubernetes Provider: This Pulumi provider is used to manage the lifecycle of Kubernetes resources. It requires the kubeconfig file generated by the creation of an AKS cluster, which contains credentials for Kubernetes API access.

    Helm Chart: We deploy the flyteagent Helm chart using the Pulumi Kubernetes provider. Notice that the repo URL should point to the Helm chart repository where flyteagent is hosted. You can adjust the values object within the Helm chart resource to customize the deployment of flyteagent.

    Exported Output: Finally, we export the kubeconfig and the Flyte endpoint, which can be used to interact with the Flyte API once it's deployed.

    To run this program, be sure that you have the Azure CLI and Pulumi CLI installed and configured. Additionally, you will need to set the sshPublicKey configuration variable for Pulumi with:

    pulumi config set --secret sshPublicKey <YOUR_SSH_PUBLIC_KEY>

    Please replace <YOUR_SSH_PUBLIC_KEY> with your actual SSH public key.

    Then, run the program with:

    pulumi up

    Verify that all resources are created as expected in your Azure subscription. After successful deployment, you can access Flyte according to the endpoint output.