Deploy the pi-hole helm chart on Opensshift

Question

Pulumi · Accepted Answer

To deploy the Pi-hole Helm chart on OpenShift using Pulumi, we will use the Pulumi Kubernetes provider. Helm charts are a convenient way to package Kubernetes applications, and Pulumi's integration with Helm allows us to deploy Helm charts in a declarative manner as part of our infrastructure as code setup.

Below is a step-by-step guide on how to create a Pulumi TypeScript program to deploy the Pi-hole Helm chart:

### Step 1: Set up your Pulumi project
First, make sure you have Pulumi installed and have an OpenShift cluster configured where you can deploy resources. You will also need `kubectl` configured to interact with your OpenShift cluster.

### Step 2: Create a new Pulumi project
To create a new Pulumi project, run `pulumi new kubernetes-typescript` in your terminal. You'll be prompted to enter the project details.

### Step 3: Define the Pi-hole Helm chart deployment
In your Pulumi program, import the necessary libraries and define the Pi-hole Helm chart resource.

Here's a complete Pulumi program that you can use to deploy the Pi-hole Helm chart to your OpenShift cluster:

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

// This TypeScript program deploys the Pi-hole Helm Chart on an OpenShift cluster using Pulumi.

// Create an instance of the Kubernetes provider connected to the OpenShift cluster.
const provider = new k8s.Provider("openshift", {
    // Assuming that kubectl is already configured to connect to your OpenShift cluster,
    // the default context in your kubeconfig will be used.
});

// Define the Pi-hole Helm chart deployment. Before running the program, ensure the Helm chart for Pi-hole is available.
// Since we're deploying on OpenShift, we must take into account specific security contexts and permissions.
const piholeChart = new k8s.helm.v3.Chart("pihole", {
    // Specify the chart repository and name, and provide any custom values.
    chart: "pihole",
    fetchOpts: {
        repo: "https://helm.example.com/charts", // Replace with the actual Pi-hole chart repository URL.
    },
    // Replace 'exampleNamespace' with the namespace in which you want to deploy Pi-hole or remove the namespace
    // property to install in the default namespace of the provider's context.
    namespace: "exampleNamespace",
    values: {
        // Custom values for Pi-hole's Helm chart can be specified here.
        // Refer to the Pi-hole Helm chart documentation for available options.
        // Example of setting a service type and password:
        service: {
            type: "ClusterIP",
        },
        adminPassword: "set-a-secure-password", // Replace with a secure password.
    },
}, { provider: provider }); // Pass the provider we defined earlier.

// Export the IP address of the Pi-hole service, assuming it's a LoadBalancer service with an external IP.
// Since the service type we've set earlier is ClusterIP, we do not get an external IP here, so this is commented out.
// export const piholeIpAddress = piholeChart.getResourceProperty("v1/Service", "pihole-pihole", "status").apply(status => status.loadBalancer.ingress[0].ip);

// To find the appropriate Helm chart or repository for Pi-hole, make sure to consult the Pi-hole documentation or Helm repositories.
```

### Step 4: Run your Pulumi program
Once you replace placeholder values with the actual parameters specific to your environment (like the Helm chart repository URL and the namespace you want to deploy to), you can run your Pulumi program with the following commands:
- `pulumi up` to preview and deploy your changes. It will show you a preview of the resources to be created and ask for confirmation before proceeding with the deployment.
- `pulumi stack output piholeIpAddress` to obtain the Pi-hole service IP address, if you're using a LoadBalancer service.

Keep in mind that Pi-hole settings and Helm values should be configured to fit your requirements and environment, and you might need additional setup depending on your OpenShift's security policies and configurations.

### Conclusion
You've now seen a complete Pulumi TypeScript program for deploying the Pi-hole Helm chart to an OpenShift cluster. Remember to review and customize the values and configurations to match your OpenShift setup and Pi-hole deployment requirements.