1. Deploy the seldon-single-model helm chart on Azure Kubernetes Service (AKS)

    TypeScript

    To deploy the seldon-single-model Helm chart on Azure Kubernetes Service (AKS), you'll need to follow these steps:

    1. Create an AKS Cluster: You'll use the Pulumi azure-native provider to define and deploy an AKS cluster.
    2. Configure Kubernetes Provider: Once the AKS cluster is up, configure the Pulumi Kubernetes provider to deploy Helm charts to the cluster.
    3. Deploy Helm Chart: Use the Pulumi Kubernetes provider to deploy the seldon-single-model Helm chart to your AKS cluster.

    Below is a step-by-step Pulumi TypeScript program that demonstrates how to carry out these steps:

    import * as pulumi from "@pulumi/pulumi"; import * as azure_native from "@pulumi/azure-native"; import * as k8s from "@pulumi/kubernetes"; // Step 1: Create an AKS Cluster const resourceGroup = new azure_native.resources.ResourceGroup("myResourceGroup"); const cluster = new azure_native.containerservice.ManagedCluster("myAKSCluster", { resourceGroupName: resourceGroup.name, agentPoolProfiles: [{ count: 2, maxPods: 110, mode: azure_native.containerservice.AgentPoolMode.System, name: "agentpool", osDiskSizeGB: 30, osType: azure_native.containerservice.OSType.Linux, vmSize: "Standard_DS2_v2", }], dnsPrefix: pulumi.interpolate`${resourceGroup.name}dns`, enableRBAC: true, kubernetesVersion: "1.18.14", linuxProfile: { adminUsername: "adminuser", ssh: { publicKeys: [{ keyData: "ssh-rsa ..." }], // Replace with your SSH public key }, }, nodeResourceGroup: `${resourceGroup.name}-aks`, resourceGroupName: resourceGroup.name, }); // Export the kubeconfig export const kubeconfig = pulumi. all([cluster.name, resourceGroup.name]). apply(([clusterName, rgName]) => { return azure_native.containerservice.listManagedClusterUserCredentials({ resourceGroupName: rgName, resourceName: clusterName, }); }). apply(creds => { const encoded = creds.kubeconfigs[0].value; if (encoded) { return Buffer.from(encoded, 'base64').toString(); } else { throw new Error("Kubeconfig was not generated"); } }); // Step 2: Configure Kubernetes Provider using the kubeconfig const k8sProvider = new k8s.Provider("k8sProvider", { kubeconfig: kubeconfig, }); // Step 3: Deploy the `seldon-single-model` Helm chart const seldonModelChart = new k8s.helm.v3.Chart("seldon-single-model", { chart: "seldon-single-model", version: "0.1.0", // Replace with the actual chart version you want to deploy fetchOpts:{ repo: "https://seldonio.github.io/seldon-core-operator/", // Replace with the actual Helm repo URL }, }, { provider: k8sProvider }); // Export the URL for the deployed Seldon Model (if applicable) // Placeholder for service endpoint and other outputs, adjust as needed. export const seldonModelEndpoint = "http://<external-ip>/<seldon-deployment-name>/api/v1.0/predictions";

    Explanation:

    1. Resource Group Creation: A new resource group is created in Azure to host the AKS cluster.

    2. AKS Cluster Creation: A managed Kubernetes cluster is created with:

      • Two nodes in the agent pool.
      • System mode specified for the agent pool profile.
      • SSH public key for secure access (you'll need to replace "ssh-rsa ..." with your actual SSH public key).
      • EnableRBAC is set to true for role-based access control.

    3. Kubeconfig Retrieval: The program exports the kubeconfig, which is needed to connect and interact with the AKS cluster using kubectl. The listManagedClusterUserCredentials function retrieves the kubeconfig for the cluster.

    4. Kubernetes Provider: A Pulumi Kubernetes provider instance is created using the kubeconfig, which enables Pulumi to deploy resources to the AKS cluster.

    5. Helm Chart Deployment: The seldon-single-model Helm chart is deployed to the AKS cluster. We specify the chart name, the version (replace with the chart version you want), and the repository URL. The Helm chart is associated with the provider to deploy it to the right cluster.

    6. Service Endpoint Export: A placeholder export for the predicted service endpoint for the Seldon model deployment is shown as an example. This would typically involve retrieving the external IP and deployment name of the Seldon service, which you would customize based on your actual deployment details.

    When you run this program with Pulumi, it will provision an AKS cluster, configure Kubernetes to work with this cluster, and deploy the seldon-single-model Helm chart to your cluster. Remember to replace the placeholders with actual values where indicated.


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