Using kubernetes apps with kuma.io

Question

Pulumi · Accepted Answer

Kuma is a service mesh that takes advantage of Kubernetes' capabilities to provide observability, traffic control, security, and discovery to your applications. When using Kuma with Kubernetes, you typically deploy it using a Helm chart that conveniently packages all the necessary components and configurations.

The basic steps to deploy Kuma on a Kubernetes cluster using Pulumi are as follows:

1. Configure the Pulumi Kubernetes provider to connect to your Kubernetes cluster.
2. Use the `kubernetes.helm.v3.Chart` class to deploy the Kuma Helm chart.

Below is a Pulumi program written in TypeScript that demonstrates how to deploy Kuma to a Kubernetes cluster using its official Helm chart.

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

// Step 1: Configure the Kubernetes provider.
// The Pulumi Kubernetes Provider uses the kubeconfig file from the local machine by default.
// Make sure your kubeconfig is set up to connect to your Kubernetes cluster.

// Step 2: Deploy Kuma using the Helm Chart.
const kumaChart = new kubernetes.helm.v3.Chart("kuma", {
    chart: "kuma",
    version: "0.7.1",
    fetchOpts:{
        repo: "https://kumahq.github.io/charts",
    },
    // You can customize the Helm chart values here if needed.
});

// Export the Kuma control plane service endpoint to access it externally.
export const kumaControlPlaneEndpoint = kumaChart.getResourceProperty(
    "v1/Service", "kuma-control-plane", "status"
).apply(status => status.loadBalancer.ingress[0].ip);

```

### Explanation:

- The `kubernetes.helm.v3.Chart` class from the `@pulumi/kubernetes` package is being used to deploy Kuma. This class serves as an abstraction over Helm, allowing you to deploy applications packaged as Helm charts directly from Pulumi programs.
- In the `kumaChart` instance, we specify the chart name (`kuma`), the version of the chart, and the repository where the chart is hosted. This repository URL will point Pulumi to the official location of Kuma's Helm chart.
- The exported `kumaControlPlaneEndpoint` variable will hold the external IP address of the Kuma control plane service once the service is up and running. Pulumi's `.apply()` is used to transform the output properties after the `kumaChart` resources are created or updated.
- Make sure that you have Helm installed and that your local machine is configured to connect to your Kubernetes cluster via `kubeconfig`. Pulumi uses your local Kubernetes configuration to communicate with your cluster.
- The version specified in the example is an arbitrary number. For your deployment, make sure to check the [official Kuma chart repository](https://kumahq.github.io/charts) for the latest version available.
- If you need to customize your Kuma deployment, you can pass a custom values file or override specific values within the `values` argument of the `Chart` resource. For example, you can decide to enable or disable certain Kuma components, set resource limits, or configure logging and tracing settings.

Remember that, depending on your cloud provider and how your Kubernetes cluster is configured, you may need to set up additional roles, permissions, or configure the LoadBalancer service to be exposed externally properly. Always refer to the Kuma documentation and your cloud provider's Kubernetes service instructions for specific requirements related to service exposure and security settings.