Deploy the create-mysql-db helm chart on Linode Kubernetes Engine

Question

Pulumi · Accepted Answer

To deploy a Helm chart on a Kubernetes cluster managed by Linode Kubernetes Engine using Pulumi, you can use the kubernetes package which provides the necessary resources to interact with Kubernetes and Helm.

Firstly, it's important to have the Kubernetes cluster up and running on Linode. Assuming that's already set up and you have the kubeconfig for the cluster, we can proceed with deploying the create-mysql-db Helm chart.

To deploy a Helm chart, you will use the Chart resource provided by Pulumi's kubernetes package. This resource allows you to deploy Helm charts from a repository or a local path. Since create-mysql-db seems like a chart that could exist on a specific repository, you will need to specify the repository URL. If it's a local chart, you would need to provide the path to the chart.

Below is a TypeScript program that demonstrates how to deploy a Helm chart. Replace the placeholder <REPO_URL> with the URL of the Helm chart repository that contains the create-mysql-db chart, and <CHART_VERSION> with the version of the chart you wish to deploy. You'll also need to make sure that the namespace is pointing to an existing namespace on your cluster or create a new one if it doesn't exist.

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

// This program assumes that you've already configured Pulumi with the appropriate
// kubeconfig file or context for your LKE cluster.

// Create a new instance of the `Chart` class to deploy a Helm chart.
const mysqlDbChart = new k8s.helm.v3.Chart("create-mysql-db", {
    // Replace `<REPO_URL>` with the URL to the Helm chart's repository.
    repo: "<REPO_URL>",
    // Specify the name of the chart you want to deploy.
    chart: "create-mysql-db",
    // Replace `<CHART_VERSION>` with the chart version you want to deploy.
    version: "<CHART_VERSION>",
    // Optional: Specify custom values for the chart.
    values: {
        // These values depend on the specifics of the 'create-mysql-db' chart.
        // You might need to specify database name, credentials, and other configurations.
        // For example:
        // mysqlUser: "admin",
        // mysqlPassword: "password",
        // Check the chart's `values.yaml` or documentation for available options.
    },
    // Optional: If you want to deploy this chart in a specific namespace, specify it here.
    // If the namespace does not exist, you will need to create it using the `k8s.core.v1.Namespace` resource first.
    namespace: "default", // Change to the appropriate namespace if required.
}, { provider: /* Specify your k8s provider if required, else Pulumi uses the default provider configured */ });

// Export the chart's name so you can easily access it from the Pulumi CLI.
export const chartName = mysqlDbChart.metadata.name;

In the provided code:

The k8s.helm.v3.Chart resource is used to deploy resources from the create-mysql-db Helm chart.
The chart's configuration values can be set using the values property. These values are chart-specific, so you will need to refer to the chart's documentation or its values.yaml file for the correct values and structure.
The namespace where the Helm chart will be deployed is specified by the namespace property. If a specific namespace is needed and does not already exist, it should be created separately.

Run this code using the Pulumi CLI by executing pulumi up in the terminal within the same directory as your Pulumi program.

Please ensure that you have already logged in to your Pulumi account via CLI using pulumi login and have set up the correct environment to execute Pulumi TypeScript projects (like having node.js, npm, @pulumi/kubernetes, and potentially typescript installed).

it’s important to read the documentation for Pulumi as well as the specific resources used to understand all the properties and capabilities available to you.

Additionally, consult the documentation for the Helm chart you are deploying for details on the configuration options required and how to set up dependencies such as databases.

Remember to replace <REPO_URL> and <CHART_VERSION> with appropriate values. If create-mysql-db is not a real Helm chart from a repository, be sure to use the real name and repository details of the Helm chart you wish to deploy.