1. Deploy the krakend helm chart on Linode Kubernetes Engine


    To deploy the KrakenD Helm chart on the Linode Kubernetes Engine (LKE) using Pulumi, you can follow these steps within a Pulumi program:

    1. Set up the Kubernetes provider to interact with your LKE cluster.
    2. Use the Helm Chart resource to deploy KrakenD.

    Below you'll find a Pulumi program written in TypeScript that demonstrates this process. This program assumes you have already configured Pulumi with the necessary Linode access tokens and have access to an LKE cluster.

    Before you run this Pulumi program, ensure you've completed the following prerequisites:

    • Installed Pulumi CLI.
    • Configured Pulumi to use your Linode token and access the Kubernetes cluster.
    • Installed Node.js and npm to run the Pulumi TypeScript program.

    Here's what each part of the program does:

    • Kubernetes Provider: Sets up a provider to interact with the LKE cluster by using the kubeconfig obtained from Linode or any other means of authenticating with your cluster.
    • Helm Chart Resource: Deploys the KrakenD chart from the specified Helm repository. You may need to specify values to customize the deployment according to your needs.

    Now let's look at the Pulumi program:

    import * as k8s from "@pulumi/kubernetes"; // Define the name of your KrakenD release and the namespace where it will be deployed const releaseName = "krakend"; const namespace = "default"; // You can change this to the namespace where you want to deploy KrakenD // Create a new Kubernetes provider using the kubeconfig from Linode const lkeClusterProvider = new k8s.Provider("lkeProvider", { kubeconfig: "<YOUR_KUBECONFIG_HERE>", // Replace with the content of your kubeconfig file or use a different method to authenticate }); // Deploy the Krakend Helm chart to the LKE cluster const krakendChart = new k8s.helm.v3.Chart(releaseName, { chart: "krakend", version: "<CHART_VERSION>", // Specify the version of KrakenD Helm chart you want to deploy namespace: namespace, fetchOpts: { repo: "https://helm-charts.krakend.io", // The official Helm repository for KrakenD }, }, { provider: lkeClusterProvider }); // Export the Kubernetes cluster name and KrakenD service endpoint export const clusterName = lkeClusterProvider.clusterName; export const krakendEndpoint = krakendChart.getResourceProperty( "v1/Service", // Assuming that KrakenD chart creates a Service for the endpoint `${namespace}/${releaseName}-krakend`, // This may vary depending on the Helm chart's specifics "status" ).apply(status => status.loadBalancer.ingress[0].ip); // This will grab the IP if LoadBalancer is used

    Remember to replace "<YOUR_KUBECONFIG_HERE>" with the actual kubeconfig from your Linode account and set the "<CHART_VERSION>" to the version of KrakenD you wish to deploy.

    The k8s.helm.v3.Chart class represents a Helm chart install. It is used here to deploy KrakenD using its official Helm chart from the Krakend Helm repository.

    By applying a transformation to the krakendEndpoint, you extract the IP address of the LoadBalancer created by the Helm chart, assuming that a Service of type LoadBalancer is used. Please note that the .apply() function assumes that there will always be an IP address assigned, which might not be true immediately after deployment (as the LoadBalancer might take some time to provision).

    To run this program, you would use the pulumi up command, which will provision the resources on Linode according to this script.

    Always refer to the official Pulumi documentation for kubernetes and the Helm chart's documentation to understand the specifics of configuration values you might need to set for the KrakenD deployment.