Deploy the node-exporter-mixin helm chart on Kubernetes

Question

Pulumi · Accepted Answer

To deploy the `node-exporter-mixin` Helm chart on Kubernetes using Pulumi, you'll need to do the following:

1. Ensure you have a Kubernetes cluster running and that `kubectl` is configured to connect to it. Pulumi uses the same configuration as `kubectl` to connect to your Kubernetes cluster.

2. Install Pulumi if you haven't already. You can get it from [Pulumi's website](https://www.pulumi.com/docs/get-started/install/).

3. Create a new directory for your Pulumi project and navigate into it.

4. Run `pulumi new typescript` to create a new TypeScript-based Pulumi project.

5. Add the necessary Pulumi package for Kubernetes by running `npm install @pulumi/kubernetes`.

6. Use the `@pulumi/kubernetes` library to deploy the Helm chart. Pulumi provides direct support for deploying Helm charts with its Kubernetes provider.

Below is a full example of how to accomplish the goal using Pulumi with TypeScript. This program will deploy the `node-exporter-mixin` Helm chart to your currently configured Kubernetes cluster:

```typescript
import * as k8s from "@pulumi/kubernetes";

// Create an instance of the Helm chart. This assumes that the node-exporter-mixin chart is available in the chart repository.
const nodeExporterMixinChart = new k8s.helm.v3.Chart("node-exporter-mixin", {
    // Specify the chart repository URL if the chart is not in the default Helm repo
    // repo: "https://kubernetes-charts.storage.googleapis.com/",
    chart: "node-exporter-mixin",
    // Specify the version of the chart to deploy
    version: "x.y.z", // Replace this with the actual chart version
    // Values to pass to the Helm chart, corresponding to 'values.yaml'
    values: {
        // provide configuration values for the node-exporter-mixin chart here
    },
});

// Export the name of the chart
export const chartName = nodeExporterMixinChart.metadata.name;
```

This program does the following:

- It imports the `@pulumi/kubernetes` module, which allows Pulumi to interact with Kubernetes resources.
- It creates a new instance of a Helm chart resource named `node-exporter-mixin`.
- It specifies the chart name `node-exporter-mixin`. You would need to provide the actual version number of the chart you wish to deploy.
- Optionally, you can specify the `repo` property if your Helm chart is located in a different repository other than the default.
- You can provide custom configuration values to the Helm chart through the `values` property, which corresponds to what you would normally put in a `values.yaml` file during a Helm chart deployment.
- The last part of the code exports the name of the chart as a stack output, which can be helpful for debugging or interacting with the chart once deployed.

Make sure that the Helm chart version you specify in `version` is available in your Helm repository, and replace `x.y.z` with the correct version number. If you need to pass a custom configuration to the chart, you would add that to the `values` property.

After you have this code in your `index.ts`, simply run `pulumi up` to preview and deploy the resources. Pulumi will show you what it plans to do before making any changes to your infrastructure.

Please replace `x.y.z` with the actual version of the node-exporter-mixin chart you wish to use, and also fill in the `values` object with any configuration you need for the node-exporter-mixin Helm chart. If you already have the chart values in a YAML file, you can use `fs.readFileSync` to read the file and then parse the content to pass it as the `values` field.