Deploy the siembol helm chart on Digital Ocean Kubernetes Service

Question

Pulumi · Accepted Answer

To deploy the siembol Helm chart on Digital Ocean Kubernetes Service using Pulumi, you need to do the following steps:

1. Create a new Digital Ocean Kubernetes cluster or use an existing one.
2. Deploy the siembol Helm chart to your Kubernetes cluster.

### Pulumi Program to Deploy Siembol on Digital Ocean Kubernetes Service

In the following Pulumi TypeScript program, I'll demonstrate how to create a new Kubernetes cluster on Digital Ocean and then deploy the siembol Helm chart into that cluster. If you already have a Kubernetes cluster, you can skip the cluster creation step and modify the code accordingly to suit your existing cluster.

The `digitalocean.KubernetesCluster` is used to define the Kubernetes cluster on the Digital Ocean cloud platform, specifying parameters like the region where the cluster should be hosted and the size and number of nodes for the initial node pool. The `kubernetes.helm.v3.Chart` resource is a Pulumi resource to deploy Helm charts on a Kubernetes cluster.

Make sure you have Pulumi installed and configured with your Digital Ocean access token (see the Pulumi documentation for guidance on this). You will also need to have Helm installed if you wish to customize the chart's values or manage the Helm release lifecycle.

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

// Create a DigitalOcean Kubernetes cluster
const cluster = new digitalocean.KubernetesCluster('do-cluster', {
    // Specify the region for the cluster
    region: 'nyc3',
    // Define the version of Kubernetes you want to deploy
    version: '1.22.5-do.0',
    // Define the node pool for the cluster
    nodePool: {
        name: 'default',
        size: 's-2vcpu-2gb', // Specify the size of the droplet to use for nodes
        nodeCount: 2,       // Specify the number of nodes in the node pool
    },
});

// Configure the DigitalOcean Kubernetes provider to use the generated kubeconfig
const kubeconfig = cluster.kubeConfigs[0].rawConfig;
const provider = new k8s.Provider('do-k8s', {
    kubeconfig: kubeconfig,
});

// Deploy siembol using Helm Chart
const siembolHelmChart = new k8s.helm.v3.Chart('siembol', {
    // Specify the path or repository for the siembol Helm chart
    // The chart name and version should be replaced with the actual chart info
    // For siembol, chart details can be found in their GitHub repository or Helm repository
    chart: 'siembol',
    version: '0.1.0', // Replace with the correct siembol chart version
    fetchOpts: {
        repo: 'https://siembol.github.io', // Replace with siembol's actual Helm repository URL
    },
}, { provider: provider });

// Export the cluster's kubeconfig and endpoint
export const kubeConfig = kubeconfig;
export const clusterEndpoint = cluster.endpoint;
```

### Explanation

1. **DigitalOcean Kubernetes Cluster**: A new Kubernetes cluster named `do-cluster` is defined within the specified region (`nyc3`). It uses Kubernetes version `1.22.5-do.0` and consists of a default node pool with two nodes of size `s-2vcpu-2gb`.

2. **Kubernetes Provider**: A Pulumi Kubernetes provider is set up to interact with the newly created cluster. It requires a kubeconfig, which is obtained from the DigitalOcean cluster's outputs.

3. **Siembol Helm Chart**: We define a Helm chart resource named `siembol`, providing the chart name, version, and repository. This will install the siembol application into your Kubernetes cluster using the specified values.

4. **Exports**: The kubeconfig and cluster endpoint are exported. These can be used to access the Kubernetes cluster using `kubectl` or other Kubernetes tools.

To run this Pulumi program, save the code in a file named `index.ts` in a new Pulumi project directory. You can create a new Pulumi project by running `pulumi new typescript` and following the prompts.

After the project is set up and the code is in place, run `pulumi up` to execute the program. Pulumi will display a preview of the resources to be created/updated, and upon confirmation, will proceed to apply the changes.

Remember that the application deployment might fail if the provided values such as region, kubeconfig, chart name, version, and Helm repository do not match those available for siembol and Digital Ocean at the time of deployment. Always ensure that these values are up-to-date and correct according to your specific deployment requirements.