Deploy the wazuh helm chart on Digital Ocean Kubernetes Service

Question

Pulumi · Accepted Answer

To deploy the Wazuh Helm chart on Digital Ocean's Kubernetes Service using Pulumi, you need to follow several steps:

1. **Create a Kubernetes cluster on Digital Ocean**: 
   - A Kubernetes cluster is a set of node machines for running containerized applications. We use `digitalocean.KubernetesCluster` to create one on Digital Ocean.

2. **Install the Helm chart for Wazuh**:
   - Helm is a package manager for Kubernetes, which allows you to define, install, and upgrade even the most complex Kubernetes applications. Helm charts help you define, install, and upgrade Kubernetes applications. We use [`kubernetes.helm.v3.Chart`](https://www.pulumi.com/registry/packages/kubernetes/api-docs/helm/v3/chart/) for deploying the Wazuh Helm chart.

Let's start with the Pulumi program in TypeScript that covers both of these steps.

Firstly, you'll need to set up your Pulumi project and install any necessary dependencies:

```bash
# Create a new Pulumi project
pulumi new typescript

# Install the required Pulumi package for DigitalOcean and Kubernetes
npm install @pulumi/digitalocean @pulumi/kubernetes
```

Below is the detailed Pulumi TypeScript program. Read the comments embedded in the code to understand the process:

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

// Create a new DigitalOcean Kubernetes cluster.
const cluster = new digitalocean.KubernetesCluster('wazuh-k8s-cluster', {
    region: digitalocean.Regions.NYC1, // Choose the region that's appropriate for you
    version: 'latest', // Use the latest available version of Kubernetes
    nodePool: {
        name: 'wazuh-pool', // Give a name to your node pool
        size: digitalocean.DropletSlugs.DropletS3VCPU4GB, // Choose your droplet size
        nodeCount: 2, // Choose the number of nodes you want in your node pool
    },
});

// Set up the provider to utilize the newly-created cluster for deploying resources.
const k8sProvider = new k8s.Provider('k8s-provider', {
    kubeconfig: cluster.kubeConfigs[0].rawConfig, // Fetches the kubeconfig from the DO cluster resource
});

// Deploy Wazuh Helm chart to the cluster using the Kubernetes provider.
const wazuhChart = new k8s.helm.v3.Chart('wazuh', {
    chart: 'wazuh', // The name of the chart, change if needed
    version: '4.2.5', // Specific version of the chart, change if you require a different version
    // Repository is optional, depends if your chart is in the default helm repo or not
    fetchOpts: {
        repo: 'https://charts.wazuh.com', // The helm repository URL where Wazuh chart is located
    },
}, { provider: k8sProvider });

// Export the Kubernetes cluster's kubeconfig to connect with `kubectl`
export const kubeconfig = cluster.kubeConfigs[0].rawConfig;
// Export the endpoint of the Wazuh web UI if applicable
// Depends on the Wazuh helm chart exposing these details in the service
```

Before you run the program:

- Ensure your Pulumi and Digital Ocean CLI configuration is set up correctly.
- Replace `'latest'` with a specific Kubernetes version or use `'latest'` to pick the latest stable release of Kubernetes supported by Digital Ocean.
- Modify the Helm chart version as necessary.
- Check the [Wazuh Helm repository](https://github.com/wazuh/wazuh-charts) for the details of chart and its configuration values.

To deploy the Pulumi program, you execute the usual commands:

```bash
# Make sure you are in the directory with your Pulumi code
pulumi up
```

After the program runs, you'll have a new Kubernetes cluster on Digital Ocean, and the Wazuh Helm chart will be deployed to it. You can use the exported kubeconfig to interact with your cluster using `kubectl`, and check on your Wazuh deployment.

Remember, the specific details of accessing services and verifying deployment will vary based on the Helm chart's specifications and the configuration values you use. Make sure to review Wazuh's documentation for post-deployment steps and how to access Wazuh's interfaces.