How do I deploy Kubernetes Gateway and NATS JetStream?
In this guide, we will deploy a Kubernetes Gateway using gateway.networking.k8s.io
and set up a NATS JetStream instance using Pulumi. This will involve creating a Kubernetes Gateway resource, defining a GatewayClass, and deploying NATS JetStream.
Key Points
- We will create a Kubernetes GatewayClass and a Gateway for routing.
- We will deploy a NATS JetStream instance in the Kubernetes cluster.
import * as pulumi from "@pulumi/pulumi";
import * as k8s from "@pulumi/kubernetes";
// Define the NATS JetStream deployment
const natsDeployment = new k8s.apps.v1.Deployment("nats-deployment", {
metadata: { name: "nats" },
spec: {
selector: { matchLabels: { app: "nats" } },
replicas: 1,
template: {
metadata: { labels: { app: "nats" } },
spec: {
containers: [{
name: "nats",
image: "nats:latest",
ports: [{ containerPort: 4222 }, { containerPort: 8222 }],
args: ["-js"]
}]
}
}
}
});
// Define the NATS JetStream service
const natsService = new k8s.core.v1.Service("nats-service", {
metadata: { name: "nats" },
spec: {
ports: [
{ port: 4222, targetPort: 4222 },
{ port: 8222, targetPort: 8222 }
],
selector: { app: "nats" }
}
});
// Create a GatewayClass
const gatewayClass = new k8s.apiextensions.CustomResource("my-gatewayclass", {
apiVersion: "gateway.networking.k8s.io/v1alpha2",
kind: "GatewayClass",
metadata: { name: "my-gatewayclass" },
spec: {
controller: "example.com/gateway-controller"
}
});
// Create a Gateway
const gateway = new k8s.apiextensions.CustomResource("my-gateway", {
apiVersion: "gateway.networking.k8s.io/v1alpha2",
kind: "Gateway",
metadata: { name: "my-gateway" },
spec: {
gatewayClassName: "my-gatewayclass",
listeners: [{
protocol: "HTTP",
port: 80,
routes: {
kind: "HTTPRoute",
name: "my-route"
}
}]
}
});
// Define an HTTPRoute for routing traffic to the NATS service
const httpRoute = new k8s.apiextensions.CustomResource("my-route", {
apiVersion: "gateway.networking.k8s.io/v1alpha2",
kind: "HTTPRoute",
metadata: { name: "my-route" },
spec: {
rules: [{
matches: [{ path: { type: "Prefix", value: "/" } }],
forwardTo: [{ serviceName: "nats", port: 4222 }]
}]
}
});
Summary
In this guide, we deployed a Kubernetes Gateway and a NATS JetStream instance using Pulumi. We created a GatewayClass, a Gateway, and an HTTPRoute to route traffic to the NATS service. This setup allows for efficient traffic management and message streaming within a Kubernetes cluster.
Deploy this code
Want to deploy this code? Sign up for a free Pulumi account to deploy in a few clicks.
Sign upNew to Pulumi?
Want to deploy this code? Sign up with Pulumi to deploy in a few clicks.
Sign upThank you for your feedback!
If you have a question about how to use Pulumi, reach out in Community Slack.
Open an issue on GitHub to report a problem or suggest an improvement.