K8S 细节

https://kubernetes.io/zh/docs/reference/kubectl/overview/

https://kubernetes.io/zh/docs/reference/kubectl/overview/#%E8%B5%84%E6%BA%90%E7%B1%B B%E5%9E%8B

https://kubernetes.io/zh/docs/reference/kubectl/overview/#%E6%A0%BC%E5%BC%8F%E5%8C%9 6%E8%BE%93%E5%87%BA

https://kubernetes.io/zh/docs/reference/kubectl/overview/#%E7%A4%BA%E4%BE%8B-%E5%B8% B8%E7%94%A8%E6%93%8D%E4%BD%9C

https://kubernetes.io/docs/reference/generated/kubectl/kubectl-commands

 

 

 

 获取部署的tomcat6的yml定义信息

kubectl create deployment tomcat6 --image=tomcat:6.0.53-jre8 --dry-run -o yaml

 

 将配置信息重定向到tomcat6.yaml中（会将上面的信息写入到创建tomcat6.yml中）

kubectl create deployment tomcat6 --image=tomcat:6.0.53-jre8 --dry-run -o yaml > tomcat6.yaml

 

 

应用文件创建

kubectl apply -f tomcat6.yaml 

此时我们发现创建出了三个副本

 

 

我们同样可以获取 pod 的yaml信息  然后输出到文件yaml中

kubectl expose deployment tomcat6 --port=80 --target-port=8080 --type=NodePort --dry-run -o yaml

kubectl expose deployment tomcat6 --port=80 --target-port=8080 --type=NodePort --dry-run -o yaml > tomcat6service.yaml

 

获取pod信息

kubectl get pod tomcat6-5f7ccf4cb9-frqgh -o yaml

kubectl get pod tomcat6-5f7ccf4cb9-frqgh -o yaml > mypod.yaml

vi mypod.yaml

apiVersion: v1
kind: Pod
Metadata:
  labels:
    app: tomcat6-new
  name: tomcat6-new
  namespace: default
spec:
  containers:
  - image: tomcat:6.0.53-jre8
    imagePullPolicy: IfNotPresent
    name: tomcat-new
  - image: Nginx
    imagePullPolicy: IfNotPresent
    name: Nginx-new

kubectl apply -f mypod.yaml