81 lines
1.8 KiB
Markdown
81 lines
1.8 KiB
Markdown
# Examples
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## Expose services
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### 1. via Ingress
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1. Create a cluster, mapping the ingress port 80 to localhost:8081
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`k3d create --api-port 6550 --publish 8081:80 --workers 2`
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- Note: `--api-port 6550` is not required for the example to work. It's used to have `k3s`'s ApiServer listening on port 6550 with that port mapped to the host system.
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2. Get the kubeconfig file
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`export KUBECONFIG="$(k3d get-kubeconfig --name='k3s-default')"`
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3. Create a nginx deployment
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`kubectl create deployment nginx --image=nginx`
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4. Create a ClusterIP service for it
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`kubectl create service clusterip nginx --tcp=80:80`
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5. Create an ingress object for it with `kubectl apply -f`
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```YAML
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apiVersion: extensions/v1beta1
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kind: Ingress
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metadata:
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name: nginx
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annotations:
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ingress.kubernetes.io/ssl-redirect: "false"
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spec:
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rules:
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- http:
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paths:
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- path: /
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backend:
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serviceName: nginx
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servicePort: 80
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```
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6. Curl it via localhost
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`curl localhost:8081/`
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### 2. via NodePort
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1. Create a cluster, mapping the port 30080 from worker-0 to localhost:8082
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`k3d create --publish 8082:30080@k3d-k3s-default-worker-0 --workers 2`
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- Note: Kubernetes' default NodePort range is [`30000-32767`](https://kubernetes.io/docs/concepts/services-networking/service/#nodeport)
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... (Steps 2 and 3 like above) ...
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1. Create a NodePort service for it with `kubectl apply -f`
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```YAML
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apiVersion: v1
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kind: Service
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metadata:
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labels:
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app: nginx
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name: nginx
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spec:
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ports:
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- name: 80-80
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nodePort: 30080
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port: 80
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protocol: TCP
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targetPort: 80
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selector:
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app: nginx
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type: NodePort
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```
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2. Curl it via localhost
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`curl localhost:8082/` |