Deploy the mautrix-instagram helm chart on Digital Ocean Kubernetes Service

Question

Pulumi · Accepted Answer

To deploy the `mautrix-instagram` Helm chart on DigitalOcean Kubernetes Service, we'll go through the steps needed, and I'll explain the pieces of Pulumi TypeScript code involved in accomplishing this task.

Here's a breakdown of the tasks we're about to perform:
1. Create a Kubernetes cluster in DigitalOcean.
2. Deploy the Helm chart to the newly created cluster.

### Creating a DigitalOcean Kubernetes Cluster

To create a Kubernetes cluster on DigitalOcean, we'll use the `digitalocean.KubernetesCluster` resource. We'll need to specify details such as the region, version, node size, and the number of nodes.

### Deploying a Helm chart

For deploying a Helm chart onto a Kubernetes cluster, we use the `kubernetes.helm.v3.Chart` resource from Pulumi's `kubernetes` package. This allows us to specify the chart we want to install, along with any values overrides we may need.

Let's write our Pulumi program to implement these steps:

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

// Step 1: Create a DigitalOcean Kubernetes Cluster
const cluster = new digitalocean.KubernetesCluster("do-cluster", {
    region: "nyc1", // You can update this to the region that is relevant to you
    version: "1.21.5-do.0", // Example Kubernetes version, ensure it's available in your selected region
    nodePool: {
        name: "default-pool",
        size: "s-2vcpu-2gb", // This is the smallest node size. Change as per your requirements.
        nodeCount: 2, // The number of nodes you want to have in your default pool.
    }
});

// Export the Kubeconfig so we can access the cluster
export const kubeconfig = cluster.kubeConfigs[0].rawConfig;

// Once the cluster is provisioned, we can use this Kubeconfig to create a Kubernetes provider instance.
const k8sProvider = new k8s.Provider("do-k8s-provider", {
    kubeconfig: kubeconfig,
});

// Step 2: Deploy the mautrix-instagram Helm chart
const chart = new k8s.helm.v3.Chart("mautrix-instagram-chart", {
    chart: "mautrix-instagram", // The name of the chart. This assumes the chart is available in the used Helm repo
    values: {
        // You can provide any values specific to your helm chart here.
    },
}, { provider: k8sProvider });

// Output the status of the Helm deployment
export const helmChartStatus = chart.status;
```

### Explanation

- We import the necessary Pulumi packages: `pulumi` for core functionality, `digitalocean` for the DigitalOcean provider, and `kubernetes` for working with Kubernetes resources.
- We define a `digitalocean.KubernetesCluster` resource which describes the cluster's configuration, such as its region, version, and characteristics of the node pool.
- We then export the `kubeconfig` output of the cluster resource, which contains the necessary information to connect to your Kubernetes cluster with tools like `kubectl`.
- A `k8s.Provider` is created using the `kubeconfig` to interact with the cluster. We provide it as a parameter to the Helm chart so that Pulumi knows which Kubernetes cluster we want to deploy our chart to.
- We deploy the `mautrix-instagram` Helm chart using `k8s.helm.v3.Chart`. Here you can specify specific values to customize the Helm chart.

Remember, after this program is executed with Pulumi, you would have a DigitalOcean Kubernetes cluster running and the mautrix-instagram Helm chart deployed to it. Please ensure that the Helm chart name and values are correct and that the chart is available in your Helm repository. If it's a custom or private chart, you should also specify the repository URL in the chart resource options.

To run this program, save it to a file, say `index.ts`, and then execute it using the Pulumi CLI by running `pulumi up`. Ensure that you have Pulumi installed and configured with DigitalOcean access token.