Deploy the uptime-monitor helm chart on Digital Ocean Kubernetes Service

Question

Pulumi · Accepted Answer

To deploy the `uptime-monitor` Helm chart on Digital Ocean Kubernetes Service using Pulumi, you'll first need to set up a Kubernetes cluster on Digital Ocean. Then you can install the chart onto your cluster.

I'll guide you through the following steps:
1. Set up the Digital Ocean Kubernetes cluster.
2. Deploy the `uptime-monitor` Helm chart to the cluster.

### Step 1: Create a Kubernetes Cluster in Digital Ocean

To create a Kubernetes cluster in Digital Ocean, you can use the `digitalocean.KubernetesCluster` resource. You need to specify the region, version, and node pool configuration for your cluster.

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

// Create a Digital Ocean Kubernetes Cluster.
const cluster = new digitalocean.KubernetesCluster("do-cluster", {
    region: "nyc3",  // Choose the region that is close to you or your users
    version: "1.21.5-do.0",  // Specify the version of Kubernetes
    nodePool: {
        name: "default-pool",
        size: "s-2vcpu-2gb",  // Choose the size that fits your needs
        nodeCount: 3,  // Number of nodes in the node pool
    },
});

// Export the kubeconfig and the cluster ID
export const kubeconfig = cluster.kubeConfigs[0].rawConfig;
export const clusterId = cluster.id;
```

### Step 2: Deploy the Helm Chart to the Kubernetes Cluster

Since we don't have a specific `uptime-monitor` Helm chart in the Pulumi registry results, we will use the generic `kubernetes.helm.v3.Chart` resource which allows you to deploy a Helm chart from a repository. You will need to specify the name of the chart and the repository URL it can be found at.

Please, make sure you have the correct Helm chart name and repository URL.

```typescript
// Ensure to configure the Pulumi Kubernetes provider with the kubeconfig from the created cluster
const k8sProvider = new k8s.Provider("k8s-provider", {
    kubeconfig: kubeconfig,
});

// Deploy the uptime-monitor Helm chart
const uptimeMonitorChart = new k8s.helm.v3.Chart("uptime-monitor", {
    chart: "uptime-monitor",  // The name of the chart
    version: "1.0.0",  // The version of the chart, adjust as necessary
    fetchOpts: {
        repo: "http://helm-repo-url/",  // Replace with the repository URL
    },
}, { provider: k8sProvider });

// Export the uptime-monitor service endpoint
export const serviceEndpoint = uptimeMonitorChart.getResourceProperty("v1/Service", "uptime-monitor", "status").apply(status => status.loadBalancer.ingress[0].ip);
```

Here's what happens in the code above:

- We set up a new Kubernetes cluster with a specific configuration on Digital Ocean using the `digitalocean.KubernetesCluster` resource.
- We create a new instance of `k8s.Provider` configured with the kubeconfig from our deployed Digital Ocean Kubernetes cluster.
- We deploy the `uptime-monitor` Helm chart to our Kubernetes cluster by using the generic `k8s.helm.v3.Chart` resource.

In this code, `http://helm-repo-url/` is a placeholder and should be replaced with the actual Helm chart repository URL where `uptime-monitor` is hosted. The `version` property should also be set to the version of the `uptime-monitor` chart that you want to deploy.

### Before Running the Code

Before you run this code ensure the following prerequisites are met:
1. [Install Pulumi CLI](https://www.pulumi.com/docs/get-started/install/).
2. [Set up Pulumi to use Digital Ocean](https://www.pulumi.com/docs/intro/cloud-providers/digitalocean/setup/).
3. Replace `http://helm-repo-url/` with the actual Helm chart repository URL.
4. Adjust the Helm chart `version` property if needed.
5. Choose the appropriate Digital Ocean region and node size for your Kubernetes cluster.

After you have the Pulumi program ready, you can run it using the following commands:

```bash
pulumi up
```

This command will start the deployment process, and you will be prompted to review the changes before they are applied. Once you confirm, Pulumi will execute the changes and deploy your Kubernetes cluster and the Helm chart.

To clean up the resources, you can run:

```bash
pulumi destroy
```

This will remove all resources that have been deployed, including your Digital Ocean Kubernetes cluster and the `uptime-monitor` Helm chart.