1. Deploy the dnsdist helm chart on AWS EKS

    TypeScript

    To deploy the dnsdist Helm chart on AWS EKS using Pulumi, we will follow a few high-level steps:

    1. Create an EKS cluster using the eks.Cluster resource. This will be the Kubernetes cluster where dnsdist will run.
    2. Use the kubernetes.helm.v3.Chart resource to deploy the dnsdist Helm chart onto the EKS cluster.

    To accomplish this, you'll need to install the following Pulumi packages:

    • @pulumi/eks: Provides the resources for creating and managing an Amazon EKS cluster.
    • @pulumi/kubernetes: Enables Pulumi to work with Kubernetes resources, including deploying Helm charts.

    Here is a detailed TypeScript program that creates an EKS cluster and deploys the dnsdist Helm chart.

    import * as eks from "@pulumi/eks"; import * as k8s from "@pulumi/kubernetes"; // Create an EKS cluster. const cluster = new eks.Cluster("my-cluster", { desiredCapacity: 2, // This is the desired number of worker nodes the cluster should have. minSize: 1, // The minimum number of worker nodes the cluster can scale down to. maxSize: 3, // The maximum number of worker nodes the cluster can scale up to. instanceType: "t2.medium", // The EC2 instance type for the EKS workers, for dnsdist a t2.medium should be sufficient for a basic deployment. // For a production grade setup, you may need to choose a more powerful instance type. }); // Create a k8s provider instance using the kubeconfig from the created EKS cluster. const k8sProvider = new k8s.Provider("k8s-provider", { kubeconfig: cluster.kubeconfig.apply(JSON.stringify), }); // Deploy the dnsdist Helm chart using the k8s provider. const dnsdistChart = new k8s.helm.v3.Chart("dnsdist-chart", { chart: "dnsdist", // The name of the Helm chart, ensure this is correct and the chart is available in your specified chart repository. version: "x.y.z", // Replace 'x.y.z' with the appropriate chart version for 'dnsdist'. fetchOpts: { repo: "http://example.com/helm/charts" }, // Specify the Helm chart repository URL here. }, { provider: k8sProvider }); // Export the cluster kubeconfig and the DNS endpoint of the dnsdist service (if available). export const kubeconfig = cluster.kubeconfig; export const dnsdistEndpoint = dnsdistChart.getResourceProperty("v1/Service", "dnsdist", "status").apply(status => status.loadBalancer.ingress[0].hostname);

    Explanation:

    • In this program, we start by importing the necessary Pulumi packages for working with AWS EKS and Kubernetes/Helm.
    • We then instantiate an eks.Cluster, which creates a new EKS cluster. The desiredCapacity, minSize, and maxSize define the scaling properties of our worker nodes, and instanceType specifies the type of EC2 instances we want to use.
    • Next, we set up a k8s.Provider with the kubeconfig from our newly created cluster. This will be used to interact with our Kubernetes cluster.
    • We deploy the dnsdist Helm chart to our cluster using the k8s.helm.v3.Chart resource. This requires specifying the chart name, the version, and the repository URL where the Helm chart can be found.
    • Lastly, we export the kubeconfig to allow us to interact with our cluster using the kubectl command-line tool, and we attempt to export the DNS endpoint of the dnsdist service if it creates an external LoadBalancer with a hostname.

    Make sure you replace the chart, version, and repo with the actual chart details for dnsdist. If dnsdist requires custom configuration values, they can be provided using the values argument inside the k8s.helm.v3.Chart resource.

    Please ensure you have the Pulumi CLI installed, your AWS credentials configured appropriately, and then run pulumi up to apply this Pulumi program and create the resources in AWS.


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