Deploy the tyk-stack helm chart on Kubernetes

Question

Pulumi · Accepted Answer

To deploy the `tyk-stack` Helm chart on Kubernetes using Pulumi, you will need to use the `Chart` resource from the Pulumi Kubernetes provider. The `Chart` resource allows you to deploy a Helm chart from a repository or a local path.

Here are the steps you will follow in the program:

1. **Import Pulumi Packages**: Use the necessary Pulumi Kubernetes package to interact with Kubernetes.
2. **Create a Kubernetes Provider**: If necessary, create an instance of a Kubernetes provider to communicate with a specific Kubernetes cluster.
3. **Deploy the Helm Chart**: Use the `Chart` resource to deploy the `tyk-stack` Helm chart with the required configurations.

Below is a Pulumi program written in TypeScript, which deploys the `tyk-stack` Helm chart on a Kubernetes cluster. This assumes you have already configured Pulumi with access to a Kubernetes cluster (e.g., via `kubeconfig`).

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

// The version of the Helm chart you want to deploy. You may want to update it to the desired version.
const chartVersion = "x.y.z"; // Replace 'x.y.z' with the actual chart version.

// Deploying the tyk-stack Helm chart
const tykStackChart = new k8s.helm.v3.Chart("tyk-stack", {
    chart: "tyk-headless", // This is the name of the chart in the Helm repository.
    version: chartVersion,
    // Depending on the Helm repository, you may need to specify the repository URL.
    // For example, if the chart is in the official Tyk Helm repository:
    // repositoryOpts: {
    //     repo: "https://helm.tyk.io/public/helm/charts/",
    // },
    // Specify the values for the Helm chart as needed. This is an example set of values:
    values: {
        gateway: {
            replicaCount: 1,
        },
        dashboard: {
            replicaCount: 1,
            // You may need to set license and other settings here
        },
        // Add other configurations for the Tyk stack components as necessary
    },
    // Namespace where you want to install the chart. If not specified, it will be installed in the default namespace.
    // namespace: "tyk",
});

// Export the Gateway URL
export const gatewayUrl = tykStackChart.getResourceProperty("v1/Service", "tyk-gateway", "status").apply(status => {
    // Construct the URL from the service status, which might vary based on your environment.
    // This is an example assuming a LoadBalancer service on a cloud provider.
    const ingress = status.loadBalancer.ingress[0];
    return ingress.ip ? `http://${ingress.ip}` : `http://${ingress.hostname}`;
});
```

This program does the following:

- It imports the Kubernetes package from Pulumi to interact with the Kubernetes API.
- It creates a new `Chart` resource, which represents the Helm chart you want to deploy.
- The `repositoryOpts` can be specified if the Helm chart is in a Helm repository. In this case, we have commented it out since you'll either specify the `repo` for where the `tyk-stack` is stored, or you might have it locally. If you're using a local chart, the `path` property would be used instead.
- The `values` object allows you to configure the Helm chart with the desired values. This is where you'd customize the deployment to meet your requirements.
- Lastly, it exports the gateway URL, making the assumption that `tyk-gateway` service is of `LoadBalancer` type which may provide an external IP or hostname.

Please adjust the `chart`, `version`, `repositoryOpts`, `namespace`, and `values` fields as per your requirements and the specifics of the `tyk-stack` Helm chart you wish to deploy. If you have a specific configuration you'd like to use or other advanced settings, you'll need to modify the `values` or add additional options to the `Chart` resource.