k3d ingress and nodeport demos

k3d-ingress-nport-demo.md

#ref https://github.com/rancher/k3d/blob/master/docs/examples.md

Examples

Expose services

1. via Ingress

In this example, we will deploy a simple nginx webserver deployment and make it accessible via ingress. Therefore, we have to create the cluster in a way, that the internal port 80 (where the traefik ingress controller is listening on) is exposed on the host system.

1. Create a cluster, mapping the ingress port 80 to localhost:8081

   k3d create --api-port 6550 --publish 8081:80 --workers 2

   k3d create --publish 8081:80 --workers 2

   • Note: --api-port 6550 is not required for the example to work. It's used to have k3s's API-Server listening on port 6550 with that port mapped to the host system.

2. Get the kubeconfig file

   export KUBECONFIG="$(k3d get-kubeconfig --name='k3s-default')"

3. Create a nginx deployment

   kubectl create deployment nginx --image=nginx

4. Create a ClusterIP service for it

   kubectl create service clusterip nginx --tcp=80:80

5. Create an ingress object for it with kubectl apply -f Note: k3s deploys traefik as the default ingress controller

   apiVersion: extensions/v1beta1
   kind: Ingress
   metadata:
     name: nginx
     annotations:
       ingress.kubernetes.io/ssl-redirect: "false"
   spec:
     rules:
     - http:
         paths:
         - path: /
           backend:
             serviceName: nginx
             servicePort: 80

6. Curl it via localhost

   curl localhost:8081/

2. via NodePort

1. Create a cluster, mapping the port 30080 from worker-0 to localhost:8082

   k3d create --publish 8082:30080@k3d-k3s-default-worker-0 --workers 2

   • Note: Kubernetes' default NodePort range is 30000-32767

... (Steps 2 and 3 like above) ...

1. Create a NodePort service for it with kubectl apply -f

   apiVersion: v1
   kind: Service
   metadata:
     labels:
       app: nginx
     name: nginx
   spec:
     ports:
     - name: 80-80
       nodePort: 30080
       port: 80
       protocol: TCP
       targetPort: 80
     selector:
       app: nginx
     type: NodePort

2. Curl it via localhost curl localhost:8082/

#ref
https://github.com/rancher/k3d/blob/master/docs/examples.md

Examples

Expose services

1. via Ingress

In this example, we will deploy a simple nginx webserver deployment and make it accessible via ingress.
Therefore, we have to create the cluster in a way, that the internal port 80 (where the traefik ingress controller is listening on) is exposed on the host system.

1. Create a cluster, mapping the ingress port 80 to localhost:8081

   k3d create --api-port 6550 --publish 8081:80 --workers 2

   k3d create --publish 8081:80 --workers 2

   • Note: --api-port 6550 is not required for the example to work. It's used to have k3s's API-Server listening on port 6550 with that port mapped to the host system.

2. Get the kubeconfig file

   export KUBECONFIG="$(k3d get-kubeconfig --name='k3s-default')"

3. Create a nginx deployment

   kubectl create deployment nginx --image=nginx

4. Create a ClusterIP service for it

   kubectl create service clusterip nginx --tcp=80:80

5. Create an ingress object for it with kubectl apply -f
   Note: k3s deploys traefik as the default ingress controller

   apiVersion: extensions/v1beta1
   kind: Ingress
   metadata:
     name: nginx
     annotations:
       ingress.kubernetes.io/ssl-redirect: "false"
   spec:
     rules:
     - http:
         paths:
         - path: /
           backend:
             serviceName: nginx
             servicePort: 80

6. Curl it via localhost

   curl localhost:8081/

2. via NodePort

1. Create a cluster, mapping the port 30080 from worker-0 to localhost:8082

   k3d create --publish 8082:30080@k3d-k3s-default-worker-0 --workers 2

   • Note: Kubernetes' default NodePort range is 30000-32767

... (Steps 2 and 3 like above) ...

1. Create a NodePort service for it with kubectl apply -f

   apiVersion: v1
   kind: Service
   metadata:
     labels:
       app: nginx
     name: nginx
   spec:
     ports:
     - name: 80-80
       nodePort: 30080
       port: 80
       protocol: TCP
       targetPort: 80
     selector:
       app: nginx
     type: NodePort

2. Curl it via localhost
   curl localhost:8082/