Pod 실행

1. nginx Pod 생성

   kubectl run nginx \\
       --generator=run-pod/v1 \\
       --image=nginx \\
       --port=80
   

   pod/nginx created
   

2. pod 확인

   kubectl get pods
   

   NAME    READY   STATUS    RESTARTS   AGE
   nginx   1/1     Running   0          45s
   

3. replicaset 확인

   kubectl get replicasets
   

   No resources found.
   

4. deployments 확인

   kubectl get deployments
   

   No resources found.
   

5. pod 제거

   kubectl delete pod nginx
   

   pod "nginx" deleted
   

Deployment 생성

1. nginx Deployment 생성

   kubectl run nginx \\
       --image=nginx \\
       --port=80
   

   deployment.apps/nginx created
   

2. pod 확인

   kubectl get pods
   

   NAME                     READY   STATUS    RESTARTS   AGE
   nginx-57867cc648-bxqfz   1/1     Running   0          24s
   

3. replicaset 확인

   kubectl get replicasets
   

   NAME               DESIRED   CURRENT   READY   AGE
   nginx-57867cc648   1         1         1       54s
   

4. deployments 확인

   kubectl get deployments
   

   NAME    READY   UP-TO-DATE   AVAILABLE   AGE
   nginx   1/1     1            1           67s
   

현재 리소스 확인

1. 노드 확인

   kubectl get nodes
   

2. Pod 확인

   kubectl get pods
   

3. Deployment 확인

   kubectl get deployments
   

4. Service 확인

   kubectl get services
   

디버깅

1. deployment 상세 정보 확인

   kubectl describe deployments nginx
   

   Name:                   nginx
   Namespace:              default
   CreationTimestamp:      Fri, 22 Feb 2019 13:52:43 +0000
   Labels:                 run=nginx
   Annotations:            deployment.kubernetes.io/revision: 1
   Selector:               run=nginx
   Replicas:               1 desired | 1 updated | 1 total | 1 available | 0 unavailable
   StrategyType:           RollingUpdate
   MinReadySeconds:        0
   RollingUpdateStrategy:  25% max unavailable, 25% max surge
   Pod Template:
     Labels:  run=nginx
     Containers:
      nginx:
       Image:        nginx
       Port:         80/TCP
       Host Port:    0/TCP
       Environment:  <none>
       Mounts:       <none>
     Volumes:        <none>
   Conditions:
     Type           Status  Reason
     ----           ------  ------
     Available      True    MinimumReplicasAvailable
     Progressing    True    NewReplicaSetAvailable
   OldReplicaSets:  <none>
   NewReplicaSet:   nginx-57867cc648 (1/1 replicas created)
   Events:
     Type    Reason             Age    From                   Message
     ----    ------             ----   ----                   -------
     Normal  ScalingReplicaSet  4m26s  deployment-controller  Scaled up replica set nginx-57867cc648 to 1