Deploy the tyk-pump helm chart on Opensshift

Question

Pulumi · Accepted Answer

Deploying a Helm chart on an OpenShift cluster using Pulumi involves several steps that include setting up the necessary Pulumi packages, writing the TypeScript code to define the resources, and executing the code to perform the deployment. Below, I provide you with a detailed explanation of how to deploy the `tyk-pump` Helm chart on an OpenShift cluster using Pulumi.

### Explanation

1. **Pulumi and Kubernetes**: Pulumi provides an infrastructure-as-code tool to manage resources on various cloud providers, including Kubernetes clusters and Helm charts. It allows you to define infrastructure using programming languages like TypeScript.

2. **Kubernetes Provider**: We use the Pulumi Kubernetes provider to interact with Kubernetes clusters. This provider allows us to create, manage, and deploy Kubernetes resources, like Helm charts.

3. **Helm Charts**: Helm is a package manager for Kubernetes, and Helm charts are packages of pre-configured Kubernetes resources. `tyk-pump` is one such chart, and it can be deployed to manage the Tyk API Gateway's analytics pump component.

4. **OpenShift Cluster**: OpenShift is a container application platform built on Kubernetes. We assume you have an OpenShift cluster running and have `kubectl` configured to interact with it. Pulumi interacts with the cluster using your local `kubectl` configuration by default.

5. **Tyk Pump Helm Chart**: The `tyk-pump` Helm chart is a publicly available Helm chart that you must configure according to your requirements, usually by setting appropriate values in a YAML file. In Pulumi, we will specify these values programmatically.

### Pulumi Program

Now let's look at the TypeScript program to deploy the `tyk-pump` Helm chart on OpenShift.

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

// Define the settings for the Tyk Pump Helm chart
const tykPumpChart = new k8s.helm.v3.Chart('tyk-pump', {
    repo: 'tyk-helm',
    chart: 'tyk-pump',
    version: '0.5.4', // specify the version you want to deploy
    // Replace the values here with the specific configuration you want for tyk-pump
    values: {
        someValue: 'some-setting',
        anotherValue: 'another-setting',
    },
    namespace: 'default', // specify the namespace in which you want to deploy
}, {
    // This assumes you're using the default provider. If you're using a custom kubeconfig, pass the provider as an option here.
});

// Export the resources created
export const chart = tykPumpChart;
```

This program does the following:

- Imports the Pulumi Kubernetes package, which is used to create Kubernetes resources.
- Creates a new instance of a Helm chart, representing the `tyk-pump` chart from the specified repository.
- Sets the version of the Helm chart to ensure that you deploy a specific version.
- Specifies the configuration values for the `tyk-pump` chart. You should replace `someValue` and `anotherValue` with actual configuration parameters required for the `tyk-pump` chart.
- Assumes the Helm chart will be deployed in the `default` namespace.

To run this Pulumi program:

1. Install Pulumi and set up your Pulumi account.
2. Ensure that you have `kubectl` installed and configured to communicate with your OpenShift cluster.
3. Install Node.js and npm to run the Pulumi program in TypeScript.
4. Create a new Pulumi project for Kubernetes and install the necessary Pulumi Kubernetes package via npm.
5. Place the above code in the `index.ts` file of your Pulumi project.
6. Run `pulumi up` to preview and deploy the resources.

Please note that:

- You should replace the `values` in the code with the specific configuration for your deployment of `tyk-pump`.
- If your OpenShift cluster is configured differently (e.g., you're using a custom kubeconfig or a namespace other than `default`), you must adjust the Pulumi code accordingly.

By executing this program and following the steps outlined, you will be able to deploy the `tyk-pump` Helm chart on your OpenShift cluster with Pulumi.