Deploy the tyk-pump helm chart on Digital Ocean Kubernetes Service

Question

Pulumi · Accepted Answer

To deploy the Tyk Pump Helm chart on Digital Ocean Kubernetes Service (DOKS), you should follow these steps:

1. Set up a Kubernetes cluster on Digital Ocean using the `digitalocean.KubernetesCluster` resource.
2. Deploy the Tyk Pump Helm chart to this cluster using the `kubernetes.helm.sh/v3.Chart` resource.

Here's a detailed step-by-step guide on how to accomplish this with Pulumi and TypeScript:

### Prerequisites
Before you start, make sure you have the Pulumi CLI and Digital Ocean CLI installed, and that you're logged in to Digital Ocean and have your access token ready.

### Step 1: Create a Digital Ocean Kubernetes Cluster
We'll use the `digitalocean.KubernetesCluster` resource to provision a new Kubernetes cluster on Digital Ocean. This resource allows us to specify the region, version, node pool configuration, etc. You can adjust these according to your requirements.

### Step 2: Deploy Tyk Pump Helm Chart using Pulumi
For deploying Helm charts, we can leverage the `kubernetes.helm.sh/v3.Chart` resource from Pulumi's Kubernetes provider. This resource is a representation of a Helm chart in Pulumi's infrastructure-as-code framework.

Now let’s write the code. We start by importing necessary packages, setting up the Kubernetes cluster, and then deploying Tyk Pump Helm chart.

```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',
    version: 'latest', // You might want to specify an explicit version
    nodePool: {
        name: 'default',
        size: 's-2vcpu-2gb', // Choose the size that is appropriate for your workload
        nodeCount: 2, // Adjust node count according to your needs
    },
    // For more customization, refer to the documentation:
    // https://www.pulumi.com/registry/packages/digitalocean/api-docs/kubernetescluster/
});

// Once the cluster is provisioned, we configure the Kubernetes provider to use the cluster credentials
const k8sProvider = new kubernetes.Provider('do-k8s', {
    kubeconfig: cluster.kubeConfigs[0].rawConfig,
});

// Now we are ready to deploy the Tyk Pump Helm chart to the cluster
const tykPumpChart = new kubernetes.helm.v3.Chart('tyk-pump', {
    chart: 'tyk-pump',
    version: '0.1.0', // Specify the version of the chart you want to deploy
    fetchOpts: {
        repo: 'https://helm.tyk.io/public/helm/charts/', // Make sure this is the correct repository for Tyk Pump
    },
}, { provider: k8sProvider });

// Export the cluster's kubeconfig and endpoint to access the Kubernetes cluster
export const kubeConfig = cluster.kubeConfigs[0].rawConfig;
export const clusterEndpoint = cluster.endpoint;

```

### Explanation:

- **Digital Ocean Kubernetes Cluster**: The `digitalocean.KubernetesCluster` resource is used to create a Kubernetes cluster on Digital Ocean. You can specify the size, number of nodes, and the Kubernetes version you want to deploy.

- **Kubernetes Provider**: The `kubernetes.Provider` object configures the Kubernetes provider with the cluster credentials, allowing Pulumi to make changes to the cluster.

- **Helm Chart Deployment**: Then, we use the `kubernetes.helm.v3.Chart` resource to deploy the Tyk Pump Helm chart. This resource automates Helm operations such as installing and updating charts. Inside `fetchOpts`, we specify the Helm repository from which to fetch Tyk Pump.

- **Exported Values**: Finally, we export the kubeconfig and the cluster endpoint as outputs. This is helpful for accessing or interacting with your Kubernetes cluster from your local machine.

### Next Steps

After applying the changes with Pulumi (by running `pulumi up`), your Digital Ocean Kubernetes cluster will be provisioned, and the Tyk Pump Helm chart will be deployed on it. To interact with the cluster, you can use the exported kubeconfig with `kubectl` or other Kubernetes tools.