kubectl create deployment mydeply1 --image nginx
kubectl create deployment mydeply2 --replicas 3 --image nginx
kubectl scale deployment mydeply1 --replicas 3

[root@k8s-master yaml]# kubectl get pod
NAME                        READY   STATUS    RESTARTS   AGE
mydeply1-6f5487cd5c-2r5x5   1/1     Running   0          107s
mydeply1-6f5487cd5c-jph7k   1/1     Running   0          107s
mydeply1-6f5487cd5c-p2tz4   1/1     Running   0          5m25s
mydeply2-569799bbc8-b259h   1/1     Running   0          3m29s
mydeply2-569799bbc8-k7c48   1/1     Running   0          3m29s
mydeply2-569799bbc8-nkxj9   1/1     Running   0          3m29s

kubectl exec -it mydeply1-6f5487cd5c-jph7k -- bash

[root@k8s-master yaml]# kubectl exec -it mydeply1-6f5487cd5c-jph7k -- bash
root@mydeply1-6f5487cd5c-jph7k:/#
root@mydeply1-6f5487cd5c-jph7k:/#
root@mydeply1-6f5487cd5c-jph7k:/# ls
bin  boot  dev  docker-entrypoint.d  docker-entrypoint.sh  etc  home  lib  lib64  media  mnt  opt  proc  root  run  sbin  srv  sys  tmp  usr  var
root@mydeply1-6f5487cd5c-jph7k:/#

kubectl expose deployment mydeply2 --name svc-deply2 --port 8080 --target-port 80 --type NodePort