Deploy the mx-api helm chart on Opensshift

Question

Pulumi · Accepted Answer

To deploy the `mx-api` Helm chart on an OpenShift cluster with Pulumi, we will use the `kubernetes` package. The `kubernetes.helm.sh/v3.Chart` resource allows us to deploy Helm charts on any Kubernetes cluster, including an OpenShift cluster.

Below is a Pulumi TypeScript program that deploys the `mx-api` Helm chart. First, let's go through what the program does:

1. **Imports** - We import the necessary Pulumi Kubernetes library.
2. **Helm Chart** - We define a Helm Chart resource, which represents the `mx-api` chart.
3. **Helm Chart Configuration** - We need to specify the chart name, version, repository, and any custom values you might want to apply.

Make sure you have Pulumi installed and your OpenShift cluster configured as a context in your `kubeconfig` file. Pulumi will use it to communicate with your OpenShift cluster.

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

// Deployment of 'mx-api' helm chart on OpenShift cluster

// Replace these values with the appropriate information for the 'mx-api' Helm chart.
// The chart name is assumed to be 'mx-api', and it's sourced from a hypothetical Helm repository 'my-helm-repo'.
const chartName = "mx-api";
const chartVersion = "1.2.3"; // specify the version of the chart
const chartRepo = "http://my-helm-repo.com/charts"; // specify the chart repository

// In case you have custom values you wish to define for your Helm Chart deployment, you can define them here.
const customValues = {
    key: "value", // Example configuration. Replace with actual values
    // Add any other custom configuration specific to mx-api.
};

// Create a Helm Chart resource for the mx-api.
const mxApiChart = new k8s.helm.sh.v3.Chart(chartName, {
    chart: chartName,
    version: chartVersion,
    fetchOpts:{
        repo: chartRepo,
    },
    values: customValues,
    // If the mx-api chart must be deployed in a specific namespace, uncomment and set the following line:
    // namespace: "target-namespace",
});

// Export the application URL by querying your OpenShift cluster (you might need to change this depending on your use case).
export const mxApiUrl = mxApiChart.getResourceProperty("v1/Service", "mx-api", "status").apply(status => status.loadBalancer.ingress[0].hostname);

```

Here's what each section of the Pulumi program does:

- We define `chartName` with the name of the Helm chart, `chartVersion` with the version of the Helm chart you want to install, and `chartRepo` with the Helm repository URL where the chart can be found.

- `customValues` represents the configuration for the Helm chart. This is where you can specify any custom configuration needed for the `mx-api` chart. These values will override the defaults set by the Helm chart.

- The `k8s.helm.sh/v3.Chart` resource definition is where the deployment actually takes place. Here, you will pass the name, the version, and fetch options pointing to the Helm repository containing your chart.

- Lastly, we export a `mxApiUrl`, which attempts to determine the URL to access the `mx-api` service. Be aware that depending on your service configuration within the Helm chart (`ClusterIP`, `NodePort`, `LoadBalancer`, etc.), the way of obtaining the URL may differ.

Before running the program, make sure your Pulumi CLI is logged in by running `pulumi login`, and your OpenShift CLI is authenticated to the cluster with `oc login`. Then, you can simply run `pulumi up` to preview and deploy the resources defined in this program.

Keep in mind that OpenShift's RBAC and security configurations may require additional setup. For example, if the chart binds to privileged ports or the deployed services require specific security contexts, you may have to grant appropriate permissions or modify the chart's default templates accordingly.