1. Deploy the wordpress-helm-chart helm chart on Kubernetes


    To deploy the wordpress-helm-chart on a Kubernetes cluster using Pulumi, you can utilize the kubernetes.helm.v3.Chart resource from Pulumi's Kubernetes provider. This resource represents a Helm chart in a declarative style and can be used to deploy third-party applications like WordPress defined by a Helm chart.

    In the example below, I will create a Pulumi program that deploys WordPress using the wordpress-helm-chart. This will involve setting up a Pulumi project, initializing a new stack and writing the code to deploy the Helm chart.

    Before we start, make sure you have:

    • Installed Pulumi CLI and set up your Pulumi account.
    • Configured your Kubernetes cluster and set up kubectl to connect to your cluster.
    • Optionally, installed Helm to help verify the chart details.

    Here is a step-by-step guide followed by the TypeScript code:

    1. Set up a new Pulumi project – Initialize a new Pulumi project using the Pulumi CLI. You can use pulumi new command for this.
    2. Define the stack resources – In your project's index.ts file, write the Pulumi code to deploy the Helm chart.
    3. Deploy the stack – Use pulumi up to deploy your stack to your Kubernetes cluster.

    Below is the TypeScript program:

    import * as kubernetes from "@pulumi/kubernetes"; // Create an instance of the Kubernetes Helm Chart component resource to deploy Wordpress. const wordpressChart = new kubernetes.helm.v3.Chart("wordpress", { // Specify the chart repository and the chart name. chart: "wordpress", // Specify which repository the Helm chart is located in. // For example, this should be the URL of the Helm repository or the name of the local Helm repository. // If you know the exact repository URL where 'wordpress' chart is located, // you can replace '<REPOSITORY-URL>' with the actual URL. fetchOpts: { repo: "<REPOSITORY-URL>", }, // Specify the namespace where the Wordpress Helm chart should be deployed. // If this namespace does not exist, it will be created as part of the deployment process. namespace: "default", // You can specify the values according to the Wordpress chart's values.yaml file. // For example, to set a custom `wordpressUsername`, `wordpressPassword`, and other values, uncomment the following lines: // values: { // wordpressUsername: "username", // wordpressPassword: "password", // // Add other custom values here // }, }); // Export the endpoint to access your Wordpress application. export const wordpressUrl = wordpressChart.getResourceProperty("v1/Service", "default", "wordpress", "status") .apply(status => `http://${status.loadBalancer.ingress[0].ip}/`);

    Resource Explanation

    • The kubernetes.helm.v3.Chart resource is a representation of a Helm chart for Kubernetes. This resource allows Pulumi to install Helm charts similarly to how Helm CLI does, but through infrastructure-as-code practices.

    • In fetchOpts, we need to specify the Helm repository containing the wordpress-helm-chart. Replace <REPOSITORY-URL> with the actual URL of the repository where the chart is stored.

    • The namespace property defines in which Kubernetes namespace the WordPress chart should be deployed. Here it is set to default, but you can create and use a different namespace if required.

    • The values property allows you to override default values specified in the values.yaml file of the Helm chart. Here, I've commented out an example of how to set a custom username and password.

    • The export statement creates an output that will display the address to access the deployed WordPress instance. It assumes that the service type is LoadBalancer and that the load balancer is configured to provide an ingress IP.

    After running pulumi up and the deployment is successful, Pulumi CLI will output the exported wordpressUrl which you can use to access your WordPress site.