Deploy the persistentvolumeclaim helm chart on Linode Kubernetes Engine

Question

Pulumi · Accepted Answer

To deploy a PersistentVolumeClaim (PVC) using a Helm chart on Linode Kubernetes Engine, you need to have a Kubernetes cluster running on Linode and Helm installed either within the cluster or on your local machine where you control the cluster from.

The basic steps you will follow include:

Setting up the Kubernetes provider to interact with your Linode Kubernetes Engine cluster.
Using the Helm provider to deploy a chart that includes a PersistentVolumeClaim.

Below is the Pulumi program written in TypeScript that will perform these steps. I'll explain each part of the program as we go along.

First, ensure you have Pulumi installed and configured to use with Linode. If not, please follow the instructions on the Pulumi Installation Guide.

Now, let's begin with the Pulumi TypeScript program:

import * as k8s from '@pulumi/kubernetes';

// Step 1: Initialize the Kubernetes provider
// Assuming you have access to the kubeconfig for your Linode Kubernetes Engine,
// Pulumi uses it to interact with your cluster. The kubeconfig can be set in the
// Pulumi configuration, as an environment variable, or in the default location
// `~/.kube/config`.
const provider = new k8s.Provider("provider", {
    kubeconfig: "<your kubeconfig here>", // Replace with your kubeconfig or ensure it's set in a proper way
});

// Step 2: Deploy the PersistentVolumeClaim using a Helm chart
// We are using a hypothetical helm chart that contains a PersistentVolumeClaim.
// You will need to replace `repo_url` and `chart_name` with the actual repository URL
// and chart name that you wish to deploy. This is also the place to set any
// values that are required by the Helm chart.
const pvcChart = new k8s.helm.v3.Chart("pvcChart", {
    chart: "chart_name", // Replace with the name of the chart
    version: "chart_version", // Optional: specify the chart version
    fetchOpts: {
        repo: "repo_url", // Replace with the chart's repository URL
    },
    values: {
        // Your values go here, for example:
        // storageClassName: "local-path",
        // size: "10Gi",
    },
}, { provider });

// Export the name of the PersistentVolumeClaim so that we can easily see the
// result in the Pulumi output after deployment.
export const pvcName = pvcChart.getResourceProperty("v1/PersistentVolumeClaim", "pvc-name", "metadata.name");

In the code above:

@pulumi/kubernetes is the Pulumi Kubernetes package that allows us to create Kubernetes resources.
We create a Provider instance to configure Pulumi to use our Kubernetes cluster running on Linode.
We instantiate a Chart resource from the @pulumi/kubernetes package's helm.v3 module. This represents a Helm chart that we wish to deploy. You need to replace chart_name with the name of a helm chart that you want to deploy, repo_url with the URL of the Helm repository, and set any values specific to that Helm chart in the values property.
The PVC resource's name is exported so we can observe it once it's been successfully deployed.

Remember to replace placeholder values with actual values relevant to the PersistentVolumeClaim you want to deploy.

After you've written your Pulumi program, it's time to run it:

Use pulumi up to create or update resources according to your program.
Inspect the planned changes and confirm them by selecting "yes."
After the successful run, Pulumi will output the name of the deployed PersistentVolumeClaim.

Please replace placeholder values such as <your kubeconfig here>, chart_name, chart_version, and repo_url with real values before running the program. If your kubeconfig is configured elsewhere or you're using a different method of authentication to your Linode cluster, adjust the kubeconfig field in the provider accordingly.