【云+社区年度征文】院长手把手教学，编写一个简单的yaml文件，包含两个容器

vim pod.yaml

apiVersion: v1
kind: Pod
metadata:
  name: myapp-pod
  labels:
    app: myapp
    version: v1
spec:
  containers:
    - name: yz-nginx
      imagePullPolicy: IfNotPresent
      image: nginx:1.17
    - name: yz-tomcat
      image: tomcat:7.0
      imagePullPolicy: IfNotPresent

[root@k8s-master ~]# kubectl create -f pod.yaml 
pod "myapp-pod" create

[root@k8s-master ~]# kubectl get pods -o wide
NAME                         READY   STATUS    RESTARTS   AGE     IP             NODE        NOMINATED NODE   READINESS GATES
myapp-pod                    2/2     Running   0          49s     10.244.3.82    k8s-node2   <none>           <none>
mysql-rc-jjsmp               1/1     Running   2          48d     10.244.1.72    k8s-node1   <none>           <none>
mysql-rc-lc22m               1/1     Running   2          52d     10.244.2.80    k8s-node3   <none>           <none>
mysql-rc-nkdrh               1/1     Running   2          48d     10.244.3.65    k8s-node2   <none>           <none>
nginx-app-756ffb5cc8-52hdh   1/1     Running   0          4d16h   10.244.2.98    k8s-node3   <none>           <none>
nginx-app-756ffb5cc8-bgcbh   1/1     Running   0          4d16h   10.244.2.100   k8s-node3   <none>           <none>
nginx-app-756ffb5cc8-smztw   1/1     Running   0          4d16h   10.244.3.73    k8s-node2   <none>           <none>

[root@k8s-master ~]# kubectl describe pods myapp-pod
Name:         myapp-pod
Namespace:    default
Priority:     0
Node:         k8s-node2/42.51.227.115
Start Time:   Sat, 21 Nov 2020 06:48:21 +0000
Labels:       app=myapp
              version=v1
Annotations:  Status:  Running
IP:           10.244.3.82
IPs:
  IP:  10.244.3.82
Containers:
  nginx:
    Container ID:   docker://4558d744ecf6f2bbd71a12a3100aaec0399d712b184003c2282ae302aca00b74
    Image:          nginx:1.17
    Image ID:       docker-pullable://nginx@sha256:6fff55753e3b34e36e24e37039ee9eae1fe38a6420d8ae16ef37c92d1eb26699
    Port:           <none>
    Host Port:      <none>
    State:          Running
      Started:      Sat, 21 Nov 2020 06:48:22 +0000
    Ready:          True
    Restart Count:  0
    Environment:    <none>
    Mounts:
      /var/run/secrets/kubernetes.io/serviceaccount from default-token-hvlcv (ro)
  tomcat:
    Container ID:   docker://0bd6264ec5feedc18e8f7b504f45b6aed91bfd49153f9e328dcd784b46c50f0c
    Image:          tomcat:7.0
    Image ID:       docker-pullable://tomcat@sha256:82efd0fb784cc17f95080ce194c65b9e1277b5c8448b5f29e5072ad5581f64bf
    Port:           <none>
    Host Port:      <none>
    State:          Running
      Started:      Sat, 21 Nov 2020 06:49:02 +0000
    Ready:          True
    Restart Count:  0
    Environment:    <none>
    Mounts:
      /var/run/secrets/kubernetes.io/serviceaccount from default-token-hvlcv (ro)
Conditions:
  Type              Status
  Initialized       True 
  Ready             True 
  ContainersReady   True 
  PodScheduled      True 
Volumes:
  default-token-hvlcv:
    Type:        Secret (a volume populated by a Secret)
    SecretName:  default-token-hvlcv
    Optional:    false
QoS Class:       BestEffort
Node-Selectors:  <none>
Tolerations:     node.kubernetes.io/not-ready:NoExecute for 300s
                 node.kubernetes.io/unreachable:NoExecute for 300s
Events:
  Type    Reason     Age        From                Message
  ----    ------     ----       ----                -------
  Normal  Scheduled  <unknown>  default-scheduler   Successfully assigned default/myapp-pod to k8s-node2
  Normal  Pulled     65s        kubelet, k8s-node2  Container image "nginx:1.17" already present on machine
  Normal  Created    65s        kubelet, k8s-node2  Created container nginx
  Normal  Started    65s        kubelet, k8s-node2  Started container nginx
  Normal  Pulling    65s        kubelet, k8s-node2  Pulling image "tomcat:7.0"
  Normal  Pulled     25s        kubelet, k8s-node2  Successfully pulled image "tomcat:7.0"
  Normal  Created    25s        kubelet, k8s-node2  Created container tomcat
  Normal  Started    25s        kubelet, k8s-node2  Started container tomcat