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Running your first containers in Kubernetes
Ok, you've run one of the getting started guides and you have successfully turned up a Kubernetes cluster. Now what? This guide will help you get oriented to Kubernetes and running your first containers on the cluster.
Running a container (simple version)
Assume that ${KUBERNETES_HOME} points to the directory where you installed the kubernetes directory.
Once you have your cluster created you can use ${KUBERNETES_HOME/kubernetes/cluster/kubectl.sh to access
the kubernetes api.
The kubectl.sh line below spins up two containers running
Nginx running on port 80:
kubectl run-container my-nginx --image=nginx --replicas=2 --port=80
Once the pods are created, you can list them to see what is up and running:
kubectl get pods
To stop the two replicated containers:
kubectl stop rc my-nginx
Exposing your pods to the internet.
On some platforms (for example Google Compute Engine) the kubectl command can integrate with your cloud provider to add a public IP address for the pods, to do this run:
kubectl expose rc nginx --port=80 --create-external-load-balancer
This should print the service that has been created, and map an external IP address to the service.
Next: Configuration files
Most people will eventually want to use declarative configuration files for creating/modifying their applications. A simplified introduction is given in a different document.