Deploy the milvus-cluster helm chart on Digital Ocean Kubernetes Service

Question

Pulumi · Accepted Answer

To deploy the Milvus-cluster Helm chart on the Digital Ocean Kubernetes Service using Pulumi, you'll need to follow several important steps:

1. **Set up a Digital Ocean Kubernetes (DOKS) Cluster**: Create a new instance of the Kubernetes cluster provided by Digital Ocean where Milvus will be installed.

2. **Install Helm and Setup the Helm Chart**: After ensuring you have Helm installed in your local environment, you'll define a Helm release using Pulumi's Kubernetes provider to deploy Milvus.

3. **Verify the Deployment**: Once the Helm chart is applied, verify the status of the deployment to ensure Milvus is running correctly.

We'll use both the DigitalOcean and Kubernetes providers in Pulumi for this, which allows us to create and manage resources on DigitalOcean and deploy applications on a Kubernetes cluster using Helm charts.

Here is how we can write this Pulumi program in TypeScript:

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

// Step 1: Create a DigitalOcean Kubernetes cluster
const cluster = new digitalocean.KubernetesCluster("milvus-cluster", {
    region: digitalocean.Regions.NYC1,
    version: "latest",
    nodePool: {
        name: "default",
        size: digitalocean.DropletSlugs.DropletS2VCPU4GB,
        nodeCount: 3,
    },
});

// Step 2: Configure the Kubernetes provider to use the kubeconfig from the generated DigitalOcean Kubernetes cluster.
const k8sProvider = new kubernetes.Provider("k8s-provider", {
    kubeconfig: cluster.kubeConfigs[0].rawConfig,
});

// Step 3: Deploy the Milvus Helm chart using Pulumi's Kubernetes provider
const milvusChart = new kubernetes.helm.v3.Chart("milvus", {
    chart: "milvus",
    version: "2.1.4", // specify the version of the chart to deploy
    fetchOpts: {
        repo: "https://milvus-io.github.io/milvus-helm/", // Helm repository for Milvus
    }
}, { provider: k8sProvider });

// Export the cluster's kubeconfig and the endpoint of the Milvus service
export const kubeconfig = cluster.kubeConfigs[0].rawConfig;
export const milvusEndpoint = milvusChart.getResourceProperty("v1/Service", "milvus/milvus", "status").apply(s => s.loadBalancer.ingress[0].ip);
```

### Explanation:

1. We start by importing necessary Pulumi packages for DigitalOcean and Kubernetes.

2. Initialise a new `digitalocean.KubernetesCluster` object, which creates a cluster in the NYC1 region with 3 nodes of size 4GB.

3. We create a new `kubernetes.Provider` that is configured with the kubeconfig from our DigitalOcean cluster. This provider object is used to interact with the Kubernetes cluster.

4. Define a new Helm chart using `kubernetes.helm.v3.Chart`, specifying the `milvus` chart from its Helm repository.

5. Finally, we export the kubeconfig and the endpoint IP for Milvus. The `kubeconfig`