pod 狀態

CrashLoopBackOff： 容器退出，kubelet正在將它重啟
InvalidImageName： 無法解析鏡像名稱
ImageInspectError： 無法校驗鏡像
ErrImageNeverPull： 策略禁止拉取鏡像
ImagePullBackOff： 正在重試拉取
RegistryUnavailable： 連接不到鏡像中心
ErrImagePull： 通用的拉取鏡像出錯
CreateContainerConfigError： 不能創建kubelet使用的容器配置
CreateContainerError： 創建容器失敗
m.internalLifecycle.PreStartContainer  執行hook報錯
RunContainerError： 啟動容器失敗
PostStartHookError： 執行hook報錯 
ContainersNotInitialized： 容器沒有初始化完畢
ContainersNotReady： 容器沒有準備完畢 
ContainerCreating：容器創建中
PodInitializing：pod 初始化中 
DockerDaemonNotReady：docker還沒有完全啟動
NetworkPluginNotReady： 網絡插件還沒有完全啟動

YAML配置文件管理對象
對象管理：
# 創建deployment資源
kubectl create -f nginx-deployment.yaml
# 查看deployment
kubectl get deploy
# 查看ReplicaSet
kubectl get rs
# 查看pods所有標簽
kubectl get pods --show-labels
# 根據標簽查看pods
kubectl get pods -l app=nginx
# 滾動更新鏡像
kubectl set image deployment/nginx-deployment nginx=nginx:1.11
或者
kubectl edit deployment/nginx-deployment
或者
kubectl apply -f nginx-deployment.yaml
# 實時觀察發布狀態：
kubectl rollout status deployment/nginx-deployment
# 查看deployment歷史修訂版本
kubectl rollout history deployment/nginx-deployment
kubectl rollout history deployment/nginx-deployment --revision=3
# 回滾到以前版本
kubectl rollout undo deployment/nginx-deployment
kubectl rollout undo deployment/nginx-deployment --to-revision=3
# 擴容deployment的Pod副本數量
kubectl scale deployment nginx-deployment --replicas=10
# 設置啟動擴容/縮容
kubectl autoscale deployment nginx-deployment --min=10 --max=15 --cpu-percent=80

# 刪除清理：
kubectl delete -f nginx-deployment.yaml
kubectl delete -f nginx-service.yaml

基本管理：
# 創建pod資源
kubectl create -f pod.yaml
# 查看pods
kubectl get pods pod-test
# 查看pod描述
kubectl describe pod pod-test
# 替換資源
kubectl replace -f pod.yaml -force
# 刪除資源
kubectl delete pod pod-test

apiVersion: apps/v2
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  replicas: 2
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx:1.10
        ports:
        - containerPort: 80

apiVersion: v1
kind: Service
metadata:
  labels:
    run: nginx
  name: nginx
  namespace: default
spec:
  ports:
  - port: 88
    targetPort: 80
  selector:
    app: nginx

apiVersion: v1
kind: Pod
metadata:
  name: pod-test
  labels:
     os: centos
spec:
  containers:
  - name: hello
    image: centos:7
    env:
    - name: Test
      value: "123456"
    command: ["bash","-c","while true;do date;sleep 1;done"]
  restartPolicy: OnFailure

apiVersion: v1
kind: Pod
metadata:
  name: pod-test1
  labels:
     test: centos
spec:
  containers:
  # 第一個容器
  - name: hello-write
    image: centos:7
    command: ["bash","-c","for i in {1..1000};do echo $i >> /data/hello;sleep 1;done"]
  # 第二個容器
  - name: hello-read
    image: centos:7
    command: ["bash","-c","for i in {1..1000};do cat $i >> /data/hello;sleep 1;done"]
    volumeMounts:
      - name: data
        mountPath: /data
  # 數據卷
  volumes:
  - name: data
    hostPath:
      path: /data

apiVersion: v1
kind: Pod
metadata:
  name: nginx-pod
  labels:
    app: nginx
spec:
  containers:
  - name: nginx
    image: nginx:1.10
    ports:
    - name: http
      containerPort: 80
      hostIP: 0.0.0.0
      hostPort: 80
      protocol: TCP
   - name: https
     containerPort: 443
     hostIP: 0.0.0.0
     hostPort: 443
     protocol: TCP