Deploy the ts-server helm chart on Opensshift

Question

Pulumi · Accepted Answer

To deploy the `ts-server` Helm chart on an OpenShift cluster using Pulumi, you'll start by setting up a Pulumi program that defines the required Kubernetes resources. The `@pulumi/kubernetes` package provides the necessary tools to deploy Helm charts in a Kubernetes or OpenShift cluster.

Before you code, you'll need:
- Pulumi CLI installed and configured.
- Access to an OpenShift cluster and the `kubectl` command-line tool configured to communicate with your cluster.
- Details of the Helm chart you want to deploy (`ts-server`) including the Helm repository URL if it's not a locally available chart.

Here's a step-by-step explanation of the program:
1. Import the necessary Pulumi and Kubernetes packages.
2. Create a Helm chart resource, specifying the OpenShift namespace you want to deploy to, and any other pertinent configurations such as values overrides.

Now, let's write the code to deploy the `ts-server` Helm chart:

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

// Define the settings for the Helm chart.
const tsServerChart = new kubernetes.helm.v3.Chart("ts-server-chart", {
    // Assuming 'ts-server' is the name of the Helm chart.
    chart: "ts-server",
    // Replace this with the correct repository URL or local path.
    fetchOpts: {
        repo: "http://<helm-chart-repository-url>",
    },
    // Specify the namespace where this chart will be installed.
    namespace: "my-namespace",
    // Add any value overrides if necessary, e.g. to customize the Helm chart installation.
    values: {
        // For example, setting the service type to LoadBalancer
        service: {
            type: "LoadBalancer",
        },
    },
}, { provider: yourOpenshiftProvider }); // You will need to create a provider that targets your OpenShift cluster.

// Export the URL of the deployed ts-server (assuming ts-server creates a service with an external endpoint).
// Replace `serviceName` with the actual service name created by your Helm chart.
const tsServerService = tsServerChart.getResourceProperty("v1/Service", "serviceName", "status");
export const tsServerUrl = pulumi.interpolate`http://${tsServerService.apply(s => s.loadBalancer.ingress[0].ip)}`;
```

In this script:
- `chart`: The name of the chart in the Helm repository.
- `fetchOpts.repo`: The URL of the Helm repository that hosts the `ts-server` chart.
- `namespace`: The namespace in OpenShift where you want to deploy the chart. Make sure to replace `my-namespace` with the actual OpenShift namespace you intend to use.
- `values`: Here is where you can provide any configuration options that are specific to the `ts-server` chart. As an example, I've shown how you could set the service type to `LoadBalancer`. You'll need to consult the `ts-server` chart's documentation for the correct values.

The `provider` argument would be an instance of a Pulumi Kubernetes provider pre-configured to target your OpenShift cluster. This requires setting up the provider with the appropriate context if it's different from the default one in your `kubeconfig`.

Lastly, the program exports the URL of the `ts-server` service. The `getResourceProperty` function tries to pull out the external IP from the `LoadBalancer` service that the Helm chart would create. You need to replace `serviceName` with the actual name of the service that would be created by your Helm chart.

Remember that to run this Pulumi program, you'll need to execute `pulumi up` command via the CLI. This will provision the resources as per the above script and provide you with an output of the `ts-server` URL if the chart provisions an external-facing `LoadBalancer` service. If the service is of a different type, you'll need to adjust the export statement accordingly.