1. Deploy the istio-ingress-gateway helm chart on Digital Ocean Kubernetes Service


    To deploy the Istio ingress gateway Helm chart on Digital Ocean Kubernetes Service using Pulumi, we will perform the following steps:

    1. Provision a Digital Ocean Kubernetes cluster using the digitalocean.KubernetesCluster resource.
    2. Install the Istio ingress gateway using the Helm chart capability provided by kubernetes.helm.sh/v3.Chart, which allows you to deploy applications using Helm charts.

    Here is a detailed walkthrough of the code:

    • DigitalOcean Kubernetes Cluster Setup: We start by creating a new Kubernetes cluster on Digital Ocean. You'll need to specify the region, the version of Kubernetes, and the details about the node pool like the size of the droplets, and the number of nodes you wish to start with.

    • Istio Helm Chart Deployment:

      • Once the cluster is available, we can then proceed to install Istio using a Helm chart.
      • We specify the repository where the Istio Helm chart is located, the chart name, and the version.
      • If there are any custom values you wish to provide to the Helm chart, they can be specified in the values property as a JSON object.
      • We also define the namespace where Istio will be installed, commonly istio-system.

    Below is the full TypeScript Pulumi program performing these steps:

    import * as pulumi from '@pulumi/pulumi'; import * as digitalocean from '@pulumi/digitalocean'; import * as k8s from '@pulumi/kubernetes'; // Create a DigitalOcean Kubernetes cluster. const cluster = new digitalocean.KubernetesCluster('do-cluster', { region: "nyc1", version: "1.24.2-do.0", nodePool: { name: "default", size: "s-2vcpu-2gb", nodeCount: 2, }, }); // Configure the Kubernetes provider to use the created cluster's kubeconfig. const k8sProvider = new k8s.Provider('k8s-provider', { kubeconfig: cluster.kubeConfigs[0].rawConfig, }); // Deploy the Istio ingress gateway using the Helm chart. const istioIngress = new k8s.helm.v3.Chart('istio-ingress', { chart: "istio-ingress", version: "1.13.3", fetchOpts: { repo: "https://helm.istio.io", }, namespace: "istio-system", }, { provider: k8sProvider }); // Export the cluster's kubeconfig and the Istio ingress gateway service endpoint. export const kubeconfig = cluster.kubeConfigs[0].rawConfig; export const istioIngressEndpoint = istioIngress.getResourceProperty('v1/Service', 'istio-system/istio-ingressgateway', 'status').apply(status => status.loadBalancer.ingress[0].ip);

    Let's break down what the code is doing:

    1. We import the required Pulumi packages for Digital Ocean and Kubernetes, which allow us to work with these services.
    2. We then create a Kubernetes cluster in the specified Digital Ocean region, size, and node count.
    3. Next, we set up a Kubernetes provider, which will use the kubeconfig output from the cluster we just provisioned.
    4. We deploy the Istio ingress gateway with the specified Helm chart version and repository.
    5. Finally, we export the kubeconfig to easily access the Kubernetes cluster with kubectl and the Istio ingress gateway's endpoint IP address.

    After you write this program, you must initialize a Pulumi project, then run pulumi up to provision the resources as defined. The output will show you the kubeconfig and the IP address of your Istio ingress gateway service.

    For more information:

    Please make sure you have Pulumi and the required cloud CLI setup and logged in (for Digital Ocean, this would be doctl). You will also need to have Helm and kubectl installed to work with Kubernetes and Helm charts directly if necessary.