1. Using kubernetes kubernetes-client.io with kubernetes.crossplane.io

    TypeScript

    To build and manage Kubernetes resources using Pulumi, you'll typically work with the Kubernetes provider, which supports resources conforming to the Kubernetes API. The kubernetes package in Pulumi SDK allows you to express Kubernetes resources using real code without needing to write YAML files. This makes it possible to create, update, and manage your Kubernetes resources alongside other resources, such as cloud infrastructure in a unified way.

    The kubernetes-client.io is not a Pulumi resource but seems to refer to the general Kubernetes client tools or libraries for interacting with a Kubernetes cluster. These tools are typically used for programmatically managing Kubernetes resources from within applications or scripts. In the context of Pulumi, you would use Pulumi's own libraries to interact with Kubernetes, which under the hood, make use of similar client functionality as kubernetes-client.io.

    The kubernetes.crossplane.io seems to refer to Crossplane, which is an open-source Kubernetes add-on for managing and provisioning infrastructure as Kubernetes objects. Crossplane extends the Kubernetes API by adding custom resources for managing cloud services and infrastructure from within the Kubernetes ecosystem.

    Using both Kubernetes and Crossplane together in Pulumi would typically involve setting up a Kubernetes cluster and then installing Crossplane to manage cloud resources through Kubernetes custom resources.

    In this code example, I'll demonstrate how you can do the following using Pulumi and TypeScript:

    1. Create a Kubernetes cluster using the kubernetes provider.
    2. Install Crossplane on that cluster using a kubernetes.yaml.ConfigFile resource.

    Here's what the code looks like:

    import * as kubernetes from "@pulumi/kubernetes"; import * as pulumi from "@pulumi/pulumi"; const config = new pulumi.Config(); const stack = pulumi.getStack(); // Create a Kubernetes cluster using Pulumi's `kubernetes` provider. // For this example, it would be a cluster already provisioned and managed by some cloud provider. // Hence, I am using the `kubernetes.Provider` resource which assumes you have configured Kubernetes context for Pulumi. // Replace '<kubeconfig>' with your actual kubeconfig content or file path. const k8sProvider = new kubernetes.Provider("k8s-provider", { kubeconfig: '<kubeconfig>', }); // Here, we will simulate the installation of Crossplane into the cluster. // The actual YAML used to install Crossplane would go in the 'data' property. const crossplane = new kubernetes.yaml.ConfigFile("crossplane", { file: "https://raw.githubusercontent.com/crossplane/crossplane/release-1.0/docs/snippets/install.yaml", }, { provider: k8sProvider }); // The `ConfigFile` can contain multiple resources, and `getResource` allows us to fetch a specific resource if needed. // This is an optional step, shown here for illustrative purposes. const crossplaneDeployment = crossplane.getResource("v1/Deployment", "crossplane-system", "crossplane"); export const clusterName = pulumi.interpolate`${crossplaneDeployment.metadata.name}`;

    In this program:

    • We instantiate a kubernetes.Provider which allows us to interact with a Kubernetes cluster. The provider needs a kubeconfig, which is the configuration file that allows you to connect to a Kubernetes cluster with client tools and libraries.
    • We use a kubernetes.yaml.ConfigFile resource to apply the Crossplane installation YAML to the cluster. The content of the YAML is typically a collection of Kubernetes manifests that install Crossplane and its custom resource definitions (CRDs) into the cluster.
    • We access a specific resource (crossplaneDeployment) from the Crossplane installation using the getResource method, which allows us to reference and export specific details about the resource, such as the name of the cluster in this case.

    Keep in mind that you'll need to have access to a Kubernetes cluster's kubeconfig and Crossplane's installation YAML (or any other application you wish to deploy) for this Pulumi program to work correctly.

    Make sure that before you run pulumi up with this code, you have installed the Pulumi CLI and you're logged in to the Pulumi service or the desired state backend.

    Also note that Pulumi manages state, which keeps track of the resources you've deployed so that it can make incremental changes on subsequent updates or safely destroy resources when you're done with them.


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