1. Deploy the external-scaler-azure-cosmos-db helm chart on Opensshift


    To deploy the external-scaler-azure-cosmos-db Helm chart on OpenShift using Pulumi, you will be using the kubernetes.helm.sh/v3.Chart resource from Pulumi's Kubernetes provider. This resource allows you to deploy Helm charts to a Kubernetes cluster, which in this case will be an OpenShift cluster. OpenShift is a Kubernetes distribution from Red Hat, so you will essentially be interacting with a Kubernetes API.

    Below you'll find a Pulumi TypeScript program that performs the deployment. The program assumes:

    • You have an existing OpenShift cluster and you've configured kubectl to interact with it.
    • Your Pulumi installation is set up to use the Kubernetes provider.
    • You know the Helm chart repository URL where the external-scaler-azure-cosmos-db chart is located or assume it's publicly available in a well-known repository.

    Here's a step-by-step explanation of what the Pulumi program does:

    1. Import necessary modules: We import the required Pulumi and Kubernetes modules that include the classes and functions needed to interact with Kubernetes resources.

    2. Create a new Helm Chart resource: We instantiate a Chart resource, which represents the Helm chart we wish to deploy. We specify parameters such as the chart name, version, and any custom values that the chart requires.

    3. Configure the Helm Chart resource: If the chart requires specific configuration values, such as connection strings or resource limits, these are supplied within the values parameter.

    4. Deploy to the OpenShift cluster: Pulumi will communicate with the OpenShift cluster as configured by the user's local kubeconfig file. It will apply the Helm chart to the cluster in the specified namespace.

    Now, here's the Pulumi TypeScript program:

    import * as kubernetes from "@pulumi/kubernetes"; // Define the name and version of the Helm chart you want to deploy const chartName = "external-scaler-azure-cosmos-db"; const chartVersion = "1.0.0"; // Replace with the actual version of the chart you need const namespace = "default"; // Define the namespace where the chart should be deployed // Create a new Helm chart instance to deploy const cosmosDbScaler = new kubernetes.helm.v3.Chart(chartName, { // Specify the chart details. If the chart is in a Helm repository, // you need to add a `repo` attribute with the repository URL. chart: chartName, version: chartVersion, namespace: namespace, // If the chart has any configuration values, they can be specified in the `values` attribute. values: { // Add any required chart values here // e.g., connection strings, resource requests/limits, etc. }, }); // Export the name of the namespace that the chart was deployed into export const kubernetesNamespace = namespace;

    Replace 1.0.0 with the correct version of the Helm chart you want to deploy. If the chart isn't publicly available in a known Helm repository, you'll have to specify the repo attribute with the URL of the Helm repository.

    This program instructs Pulumi to deploy the external-scaler-azure-cosmos-db Helm chart into the default namespace of your OpenShift cluster. If the chart requires any configuration that isn't listed here, you need to add it to the values object in the Helm chart declaration.

    To run this Pulumi program:

    1. Save the code to a file named index.ts within a new Pulumi project directory.
    2. Run pulumi up inside that directory, following the prompts provided by Pulumi.
    3. Pulumi will show you a preview of the resources to be created and will ask for confirmation to proceed.

    Remember that you need to be authenticated with your OpenShift cluster and have the ~/.kube/config file correctly set up for Pulumi to be able to deploy the resources.