Kubernetes: Create Pod by kubectl command

This post shows how to create pods on Kubernetes cluster by kubectl command.
You hardly create pods by command directly, but rarely use such as on a test.

Contents

Create pod
Delete pod

Create pod

(1) Run the following command to create a pod on a kubernetes cluster.

kubectl run app1 --image=user/app1 --port=8080 --restart=Never

--image : container image
-- port : listener port of container
--restart :
  - Always (Default): Create a Deployment
  - OnFailure: Create a Job
  - Never: Create a normal Pod

It shows the following.

pod/app1 created

(2) Run the following command to confirm created pod.

kubectl get pods

It shows the following.

NAME   READY    STATUS     RESTARTS    AGE
app1   1/1      Running    0           5m14s

(3) Run the following command to confirm the node on which the pod works and pod’s ip address.

kubectl get pods -o wide

It shows the following

NAME   READY    STATUS     RESTARTS    AGE      IP           NODE     NOMINATED NODE    READINESS GATES
app1   1/1      Running    0           5m14s    10.45.0.3    node1    <none>            <none>

NOTE: If you create a pod according to this post, you can access the above ip address 10.45.0.3 from only within the cluster.

Delete pod

Run the following command to delete a pod.

kubectl delete pod app1

It shows the following.

pod "app1" deleted

That’s about it.