148422597X Kubernetes Management Design Patterns [Vohra 2017-01-29] {E559F6BB}

Testing the Cluster
Chapter 1 ■ Kubernetes on AWS
Next, we will test the Kubernetes cluster. First, we need to add the directory path in which the Kubernetes
binaries are installed to the environment variable PATH.
export PATH=/home/ec2-user/kubernetes/platforms/linux/amd64:$PATH
Subsequently echo the PATH environment variable as shown in Figure 1-25.
Figure 1-25. Setting the PATH environment variable
To test the cluster, run a Docker image such as the nginx image to create three pod replicas:
kubectl run nginx --image=nginx --replicas=3 --port=80
List the pods:
kubectl get pods
List the deployments:
kubectl get deployments
Create a service of type LoadBalancer for the deployment:
kubectl expose deployment nginx --port=80 --type=LoadBalancer
List the services:
kubectl get services
List the pods across the cluster
kubectl get pods –o wide
If Kubernetes has installed correctly, all the previous commands should run correctly and generate the
output to indicate that a pod cluster has been created, as shown in Figure 1-26.
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