1. Using kubernetes install.istio.io with ceph.rook.io

    TypeScript

    I will guide you through a basic Pulumi TypeScript program to install Istio and Rook Ceph on a Kubernetes cluster. Istio is a service mesh that allows you to connect, secure, control, and observe services in a Kubernetes cluster. Rook is an open-source cloud-native storage orchestrator for Kubernetes, providing the platform, framework, and support for a diverse set of storage solutions.

    To begin with Istio, we'll first apply manifests that install the Istio control plane. For Rook, we'll apply the necessary operator manifest to install and configure the Ceph storage on the cluster. To accomplish this, Pulumi leverages the Kubernetes provider, which uses the Kubernetes API to manage resources.

    The Pulumi Kubernetes provider needs to be configured with credentials to communicate with your Kubernetes cluster. Before running this Pulumi program, ensure that you have access to a running Kubernetes cluster and the kubectl command-line tool is configured to communicate with your cluster.

    Here's the TypeScript code for deploying Istio and Ceph with Pulumi. You can copy this into a file named index.ts in your Pulumi project:

    import * as k8s from "@pulumi/kubernetes"; // Create a Kubernetes provider instance that uses our existing cluster configuration const provider = new k8s.Provider("k8s-provider", { // If kubeconfig is not specified, Pulumi uses the default kubeconfig path. // You can point to a specific kubeconfig by setting the `kubeconfig` property. }); // Install Istio on the Kubernetes cluster const istioNamespace = new k8s.core.v1.Namespace("istio-system", { metadata: { name: "istio-system" } }, { provider: provider }); const istioInstall = new k8s.yaml.ConfigFile("istio-install", { file: "https://raw.githubusercontent.com/istio/istio/master/manifests/istioctl/templates/installation.yaml", }, { provider: provider, dependsOn: [istioNamespace] }); // Deploy the Rook Ceph operator const rookNamespace = new k8s.core.v1.Namespace("rook-ceph", { metadata: { name: "rook-ceph" } }, { provider: provider }); const rookCephCluster = new k8s.yaml.ConfigFile("rook-ceph", { file: "https://raw.githubusercontent.com/rook/rook/master/cluster/examples/kubernetes/ceph/cluster.yaml", }, { provider: provider, dependsOn: [rookNamespace] }); // Export the URL for the Istio Ingress Gateway export const istioIngressGatewayUrl = istioInstall.getResourceProperty( "v1/Service", "istio-system/istio-ingressgateway", "status" ).apply(status => status.loadBalancer.ingress[0].ip || status.loadBalancer.ingress[0].hostname); // Once the Rook Ceph operator is deployed, you may want to deploy storage classes or further storage configuration depending on your needs.

    Understanding the Code

    1. First, we import the Pulumi Kubernetes package, which provides the necessary resources to interact with Kubernetes clusters.
    2. We instantiate a Kubernetes provider that Pulumi will use to communicate with the Kubernetes API.
    3. We declare two Kubernetes namespaces, istio-system for Istio and rook-ceph for Rook Ceph.
    4. We install Istio by applying its installation manifests using k8s.yaml.ConfigFile, which references the official Istio installation YAML.
    5. We similarly set up Rook Ceph by applying the Rook operator's manifests.
    6. We export the Istio Ingress Gateway URL, which will be used to access services managed by Istio outside the cluster. The URL is obtained from the status of the Istio Ingress service.

    Notes for Running the Program

    • Ensure you replace the URLs for Istio and Rook with the specific versions you wish to install if you're not using the manifests from the master branch.
    • The Rook Ceph cluster manifest assumes a certain cluster configuration. You would need to adjust the manifests for your specific environment and hardware/etc.
    • Pulumi programs are run using the Pulumi CLI. Once you have this index.ts file within your Pulumi project, you would navigate to your project directory in your terminal and run pulumi up.
    • This program doesn't cover post-installation configurations for Istio and Rook Ceph, like customizing your Istio setup or creating Ceph storage classes and filesystems. You'll need to follow Istio's and Rook's documentation for those steps.

    Always refer to the official Istio documentation and the Rook Ceph documentation for more detailed information. The Pulumi Kubernetes provider documentation can be referred to for understanding how to manage Kubernetes resources with Pulumi.


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