Deploy the uui helm chart on Digital Ocean Kubernetes Service

Question

Pulumi · Accepted Answer

To deploy a Helm chart on the Digital Ocean Kubernetes Service using Pulumi, we'll need to use two main resources:

1. `digitalocean.KubernetesCluster`: This resource is used to create a managed Kubernetes cluster on Digital Ocean. It allows us to define the number of nodes, the node size, and other configurations related to networking and maintenance.

2. `kubernetes.helm.v3.Chart`: This resource is used to deploy a Helm chart into a Kubernetes cluster. It packages all the resources needed for a typical application into a single deployable unit.

In the following program, we'll define a Digital Ocean Kubernetes cluster and deploy the "uui" Helm chart onto it. We'll assume that "uui" is a Helm chart available in a public or private chart repository.

Make sure to replace the `repo` and `chart` properties with the appropriate values for your "uui" Helm chart. If the "uui" chart requires specific configuration values, you can provide them as a dictionary to the `values` property.

Here's how you can do it in Pulumi with TypeScript:

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

// Create a Digital Ocean Kubernetes cluster
const cluster = new digitalocean.KubernetesCluster("do-cluster", {
    region: "nyc3", // Choose the region where you want to deploy your cluster
    version: "1.21.5-do.0", // Specify the version of Kubernetes
    nodePool: {
        name: "default",
        size: "s-2vcpu-2gb", // Choose the size of the nodes based on your requirements
        nodeCount: 2, // The number of nodes in the Kubernetes cluster
    },
});

// Create a Kubernetes provider instance that uses the kubeconfig from the newly-created cluster
const k8sProvider = new kubernetes.Provider("do-k8s", {
    kubeconfig: cluster.kubeConfigs[0].rawConfig,
});

// Deploy the "uui" Helm chart into the Kubernetes cluster
const uuiChart = new kubernetes.helm.v3.Chart("uui-chart", {
    chart: "uui",
    version: "1.0.0", // Use the version of the chart you want to deploy
    namespace: "default", // The Kubernetes namespace to deploy the chart. You may create a new namespace if required.
    // `repo` property is optional and it is used only if the chart is in a remote repository
    fetchOpts: {
        repo: "http://charts.example.com/", // Replace with the actual repository URL
    },
    values: {
        // Add any values here to configure the chart installation
        key1: "value1",
        key2: "value2",
        // ...
    },
}, {provider: k8sProvider}); // Specify the provider created from the cluster's kubeconfig

// Export the cluster's kubeconfig and the endpoint
export const kubeconfig = cluster.kubeConfigs[0].rawConfig;
export const endpoint = cluster.endpoint;

```

In this program:
- We set up a new Digital Ocean Kubernetes cluster (`digitalocean.KubernetesCluster`) in New York City 3 region with 2 nodes that have 2 vCPUs and 2GB of RAM each. You can modify these values to match your specific requirements.
- We instantiate the Kubernetes provider (`kubernetes.Provider`) using the kubeconfig from the newly created cluster.
- We deploy the "uui" chart (`kubernetes.helm.v3.Chart`) into the default namespace of our cluster. We specify that the chart comes from a Helm repository at `http://charts.example.com/`, and we pass some placeholder values.
- We export the kubeconfig and endpoint for convenience, allowing you to interact with the cluster using `kubectl` or other Kubernetes tools.

Remember to change the chart details and values to match the specifics of the "uui" chart you are deploying. If the chart is stored locally instead of a repository, you'll need to provide a `path` property rather than `repo` and `fetchOpts`.