1. Deploy the calico-aws helm chart on Opensshift


    To deploy the Calico AWS Helm chart on an OpenShift cluster, you'll be using Pulumi's Kubernetes library to manage Helm charts. Helm is a package manager for Kubernetes, which allows you to define, install, and upgrade Kubernetes applications. Calico is a popular open-source networking and network security solution for containers, virtual machines, and native host-based workloads.

    First, ensure that you have an OpenShift cluster running and access to it via kubectl on your local machine. OpenShift is Red Hat's Kubernetes distribution optimized for continuous application development and multi-tenant deployment.

    Here's a step-by-step guide and Pulumi program written in TypeScript to accomplish the deployment:


    • Make sure you have Pulumi CLI installed.
    • Make sure you have the kubectl command-line tool configured to communicate with your OpenShift cluster.
    • Ensure Helm is installed in case you need to manually inspect or manage Helm charts outside of Pulumi.

    Now, let's create a Pulumi TypeScript program:

    1. Setting up a new Pulumi TypeScript project

    Create a new directory for your Pulumi project, change into it, and initialize a new TypeScript project:

    mkdir pulumi-calico-aws-openshift && cd pulumi-calico-aws-openshift pulumi new typescript

    2. Writing the Pulumi Program

    Now let's write the Pulumi program. You need to define the Kubernetes provider to interact with the OpenShift cluster, and then define the Helm Chart resource for deploying Calico.

    import * as pulumi from "@pulumi/pulumi"; import * as k8s from "@pulumi/kubernetes"; // Step 1: Create an instance of the Kubernetes Provider pointing to your OpenShift cluster. // Assumes your `kubeconfig` file has been set up and that it can access your OpenShift cluster const openshiftProvider = new k8s.Provider("openshift-k8s", { kubeconfig: pulumi.output(process.env.KUBECONFIG).apply(JSON.stringify), }); // Step 2: Define the Helm chart for Calico on AWS. // Note that the 'chart' and 'version' must be supplied. const calicoChart = new k8s.helm.v3.Chart("calico-aws", { chart: "calico", version: "<chart version>", // Specify the version of the Calico Helm chart fetchOpts:{ repo: "https://docs.projectcalico.org/charts", // Calico Helm chart repository URL }, }, { provider: openshiftProvider }); // Export any needed values such as URLs or IP addresses that might result from the deployment export const calicoChartStatus = calicoChart.status;

    This program does the following:

    • Imports the necessary Pulumi libraries.
    • Sets up a Kubernetes provider for your OpenShift cluster by referencing the kubeconfig in your environment.
    • Deploys Calico using a Helm chart. In this example, you'll need to replace <chart version> with the specific chart version you wish to deploy.
    • Provides a helm repo URL specific to Calico's charts.
    • Optionally, exports the status of the deployed chart.

    3. Running the Pulumi Program

    After writing the code, run it using the Pulumi CLI:

    pulumi up

    This command will prompt you with a preview of the resources that Pulumi plans to create. If everything looks correct, confirm the deployment, and Pulumi will begin provisioning the resources, which includes deploying Calico to your OpenShift cluster.

    4. Verifying the Deployment

    Once Pulumi has completed the deployment, you can verify that Calico was deployed correctly by checking the resources within your OpenShift cluster using kubectl.

    kubectl get all -n calico-system

    Make sure to adjust the namespace if Calico is installed in a different one than calico-system.

    Remember that Pulumi provides a declarative approach to infrastructure as code, which allows you to define and manage your cloud resources using code. Pulumi's use of familiar languages like TypeScript makes it a powerful and flexible tool for developers to automate their cloud infrastructure.