3つのnginxを立ててみる

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx
spec:
  replicas: 3
  selector:
    matchLabels:
      app: nginx-app
  template:
    metadata:
      labels:
        app: nginx-app
    spec:
      containers:
        - name: nginx
          image: nginx:latest
          ports:
            - containerPort: 80

kubectl create -f nginx.yaml

# kubectl get deployments.apps -o wide
NAME    READY   UP-TO-DATE   AVAILABLE   AGE   CONTAINERS   IMAGES         SELECTOR
nginx   3/3     3            3           24s   nginx        nginx:latest   app=nginx-app

# kubectl get pod
NAME                     READY   STATUS    RESTARTS   AGE
nginx-59bc74c488-669ng   1/1     Running   0          9m34s
nginx-59bc74c488-csj8x   1/1     Running   0          9m34s
nginx-59bc74c488-dc2zq   1/1     Running   0          9m34s

apiVersion: v1
kind: Pod
metadata:
  name: ubuntu
spec:
  containers:
    - name: ubuntu
      image: ubuntu
      command:
        - sleep
        - infinity

# kubectl create -f ubuntu.yaml

# kubectl get pods ubuntu 
NAME     READY   STATUS    RESTARTS   AGE
ubuntu   1/1     Running   0          6m13s