1. Deploy the wiremock helm chart on Kubernetes

    TypeScript

    To deploy the Wiremock Helm chart on a Kubernetes cluster using Pulumi, we will be using the kubernetes.helm.v3.Chart resource from the @pulumi/kubernetes package. This resource allows us to deploy a Helm chart from a remote Helm repository. Wiremock is not available in the default Helm chart repository, so you would typically need to add a repository that includes the Wiremock Helm chart or specify a custom repository URL. For the sake of this example, I’ll assume there is a repository that contains the Wiremock helm chart.

    The process involves the following main steps:

    1. Setting up a Pulumi project and installing necessary dependencies.
    2. Writing a Pulumi program that declares a Chart resource for Wiremock.
    3. Running pulumi up to deploy your Helm chart to the Kubernetes cluster.

    Before you can run this code, make sure you have the following prerequisites in place:

    • Pulumi CLI installed and configured with your desired cloud provider.
    • Access to a Kubernetes cluster, with kubeconfig properly configured.
    • Helm and kubectl installed (if you need to perform Helm or kubectl operations locally).

    Below is the TypeScript Pulumi program that defines the deployment of the Wiremock Helm chart on Kubernetes:

    import * as k8s from "@pulumi/kubernetes"; // Define the Wiremock Helm chart from a remote repository. const wiremockChart = new k8s.helm.v3.Chart("wiremock", { repo: "wiremock-repo", // The repository name where the Wiremock chart is hosted chart: "wiremock", // The name of the chart we want to deploy version: "x.y.z", // Replace 'x.y.z' with the appropriate chart version // You can specify custom values according to the Helm Chart's `values.yaml` file values: { // Example values: these are hypothetical and depend on the Wiremock Helm chart's actual values replicaCount: 1, service: { type: "ClusterIP", port: 80, }, }, // Namespace where to deploy the chart, if not specified it uses 'default' namespace namespace: "wiremock-namespace", }); // Export the service endpoint of Wiremock export const wiremockEndpoint = wiremockChart.getResource("v1/Service", "wiremock-namespace", "wiremock").status.apply(status => { // Assuming the Service type is ClusterIP, form the internal cluster address: // Wiremock's endpoint URL will only be accessible within the Kubernetes cluster. // If you change the service type to LoadBalancer, NodePort, etc., you will access it differently. return `http://${status.loadBalancer.ingress[0].ip}:${status.loadBalancer.ingress[0].port}`; });

    This program creates a new instance of a Wiremock Helm chart deployment within the specified Kubernetes namespace. When writing this TypeScript code, you would replace repo: "wiremock-repo" with the corresponding repository details where the Wiremock Helm chart is stored and version: "x.y.z" with the actual version of the chart you wish to deploy. The values object allows you to customize the Helm deployment as per Wiremock’s values.yaml (specify the exact configuration according to the chart's structure).

    You would typically get the repo and version information from the Helm chart's documentation or from an artifact repository where the chart is hosted, such as Artifact Hub or a private repository.

    After writing this code into a file (e.g., index.ts), you would run pulumi up in the terminal, which would prompt Pulumi to perform the deployment. It uses your current Kubernetes context to determine which cluster to deploy to, so ensure that kubeconfig is set to the correct cluster.

    The wiremockEndpoint is an exported Pulumi stack output, which will display the endpoint through which you can access the deployed Wiremock service once the deployment is completed. This assumes that the Service resource created by the Helm chart exposes the Wiremock application on a known port.

    To learn more about working with Helm charts in Pulumi, you can visit the Pulumi documentation for Helm.


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