Deploy the fhir helm chart on Kubernetes

Question

Pulumi · Accepted Answer

To deploy the FHIR Helm chart on a Kubernetes cluster using Pulumi, you will need to create a Pulumi program that declares the necessary resources. Specifically, you'll use the `Chart` resource from the Pulumi Kubernetes provider which enables you to deploy Helm charts.

Here's how you can write a Pulumi program in TypeScript to deploy the FHIR Helm chart:

1. Set up a new Pulumi project and stack if you haven't already.
2. Make sure you have access to a Kubernetes cluster and the `kubeconfig` file is set up correctly on your machine.
3. Add the necessary dependencies to your project. In your project directory, run `npm install @pulumi/kubernetes`.
4. Write the TypeScript code to declare the Helm chart.

Below is a Pulumi program that deploys a FHIR Helm chart:

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

// Create an instance of the Helm chart to deploy the FHIR server.
// You should replace `REPO_URL` with the Helm repository URL where the FHIR chart is located
// and `CHART_VERSION` with the version of the chart you wish to deploy.
const fhirChart = new k8s.helm.v3.Chart("fhir-server", {
    repo: "REPO_URL", // The repository URL should be specified here.
    chart: "fhir",    // This is the name of the chart within the repository.
    version: "CHART_VERSION", // Specify the version of the chart you want to deploy.
    // Values in `values` are chart-specific and you may need to specify or override
    // specific values based on the FHIR chart's requirements.
    values: {
        // For example, you might need to specify persistence settings, resource requests/limits,
        // service type, or any other configurable values of the FHIR helm chart.
        // These will depend on the specific FHIR helm chart you are using and its version.
    },
    // Optionally, if your Helm chart needs to be deployed within a specific Kubernetes namespace,
    // you can specify that namespace. If not set, it will use the default namespace.
    namespace: "fhir-namespace",
});

// Export the IP address or hostname of the deployed FHIR server
// (This assumes the FHIR server service is of type LoadBalancer and is cloud-specific).
export const fhirServerUrl = fhirChart.getResourceProperty("v1/Service", "fhir-server-svc", "status")
.then(status => status.loadBalancer.ingress[0].hostname || status.loadBalancer.ingress[0].ip);
```

This program does the following:
- Imports the Pulumi Kubernetes library.
- Defines a Helm chart resource. You need to provide the repository URL where the FHIR Helm chart is located and specify the chart version.
- Optionally sets a namespace where the Helm chart will be deployed.
- Exports the URL of the FHIR server. It assumes that the Kubernetes Service created by the Helm chart is of type `LoadBalancer` and will thus have an externally accessible IP address or hostname.

Before running this code, ensure you have updated `REPO_URL`, `CHART_VERSION`, and any necessary values within the `values` object that the FHIR Helm chart requires.

To execute the program:
1. Save the code in a file, for example `index.ts`.
2. From your command line, run `pulumi up` to preview and deploy the changes.

After reviewing the planned changes, confirm the deployment to proceed. Pulumi will then deploy the FHIR Helm chart to your Kubernetes cluster, and the output will provide you with the URL of the deployed FHIR server.