Pods¶

This is the smallest deployable unit in Kubernetes.

Sample: nginx.yml

apiVersion: v1
kind: Pod
metadata:
  labels:
  name: nginx-storage
spec:
  containers:
    - image: nginx
      name: nginx

To run this pod use the apply command.

kubectl apply -f nginx.yml

If we modify the nginx.yml file further and try to apply it again (when the old pod is still running with the same name), it won't work.

apiVersion: v1
kind: Pod
metadata:
  labels:
  name: nginx-storage
spec:
  containers:
    - image: nginx
      name: nginx
    - image: busybox
      name: busybox
      command: ["/bin/sh", "-c"]
      arg: ["sleep 1000"]

First, delete the old pod and then apply the changes.

Pods¶

References:¶