Deploy the rbacmanager helm chart on Kubernetes

Question

Pulumi · Accepted Answer

To deploy the `rbac-manager` Helm chart on Kubernetes using Pulumi, I'll provide you with some guidance and the corresponding Pulumi program in TypeScript.

Here's what we're going to do:

1. We will create a Pulumi project that uses the Kubernetes package to interact with a Kubernetes cluster.
2. We will define a Helm chart resource using `kubernetes.helm.v3.Chart` class from Pulumi's Kubernetes provider. This class allows us to specify the chart we want to deploy, including its name, version, and any custom values we want to provide.

First, ensure you have access to a Kubernetes cluster and have the `kubeconfig` file correctly set up on your local machine. Pulumi uses this configuration to communicate with your cluster.

We'll be using the `kubernetes.helm.v3.Chart` resource to deploy `rbac-manager`. This resource manages a Helm chart's installation in a declarative manner, allowing you to provide configuration parameters directly in your Pulumi program.

To get started, ensure you have installed the Pulumi CLI and the necessary programming language SDK, in this case, Node.js for TypeScript.

Now, let's write the Pulumi TypeScript program:

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

// Define the rbac-manager Helm chart.
const rbacManagerChart = new kubernetes.helm.v3.Chart("rbac-manager", {
    chart: "rbac-manager",
    version: "0.7.0", // Specify the version of the chart you wish to deploy. 
    fetchOpts: {
        repo: "https://charts.fairwinds.com/stable", // This is the repository where the rbac-manager chart is hosted.
    },
    // Specify any custom values for your Helm chart. For this example, we use default values.
    // values: {
    //     key: "value", // Replace with any custom values you need to provide to the chart.
    // },
});

// Export the resources created by the Helm chart. These might include Deployments, Services, etc.
export const chartResources = rbacManagerChart.resources;
```

Here’s what each part of this code is doing:

- **Import Pulumi Kubernetes Package**: We start by importing the necessary classes from the `@pulumi/kubernetes` package.
  
- **Define rbac-manager Helm Chart**: We create a new Helm chart resource using the `kubernetes.helm.v3.Chart` class and provide it with a unique name, `rbac-manager`. We specify the chart name as `rbac-manager`, which is the Helm chart we are deploying. We also define the version of the chart for reproducibility and set the Helm repository URL where the chart can be found.

- **Export Chart Resources**: At the end of our program, we export the chart resources so we can easily see what Kubernetes resources were created or modified when we deploy this chart.

After writing this Pulumi program, you should install the Pulumi CLI, configure access to your Kubernetes cluster, and run `pulumi up` in your CLI where this TypeScript file is saved. This will start the deployment process, and Pulumi will provide you with a preview of the changes before they are applied to your cluster. After you confirm the changes, Pulumi will deploy the `rbac-manager` chart to your Kubernetes cluster.

Remember that the `values` object can be used to provide custom configuration to your Helm chart. If you have any specific configurations you need to apply to the `rbac-manager` chart, you would specify them in the `values` object.