镜像：
vi dockerfile FROM 10.0.0.11:5000/nginx:1.13 ADD . /usr/share/nginx/html vi .dockerignore dockerfile docker build -t xiaoniao:v1 . docker run -d -p 88:80 xiaoniao:v1
jenkins：
使用jenkins环境变量 BUILD_ID 修改构建后脚本为 docker build -t 10.0.0.11:5000/xiaoniao:v$BUILD_ID . docker push 10.0.0.11:5000/xiaoniao:v$BUILD_ID
构建一个deployment命令：
kubectl run xiaoniao --image=10.0.0.11:5000/xiaoniao:v1 --replicas=2 --record
提供一个端口访问，即创建一个svc，执行对应deployment：
kubectl expose deployment xiaoniao --port=80 --type=NodePort
版本更新，更新镜像：
kubectl set image deploy xiaoniao xiaoniao=10.0.0.11:5000/xiaoniao:v3
查看历史版本：
kubectl rollout history deployment xiaoniao
版本回滚：
kubectl rollout undo deploy xiaoniao #回退到上一版本 kubectl rollout undo deploy nginx --to-revision=1 #回退到指定1记录
jenkins实现版本升级：
if [ $GIT_PREVIOUS_SUCCESSFUL_COMMIT == $GIT_COMMIT ];then
echo "no change，skip build"
exit 0
else
echo "git pull commmit id not equals to current commit id trigger build"
docker build -t 10.0.0.11:5000/xiaoniao:v$BUILD_ID .
docker push 10.0.0.11:5000/xiaoniao:v$BUILD_ID
kubectl -s 10.0.0.11:8080 set image deploy xiaoniao xiaoniao=10.0.0.11:5000/v$BUILD_ID
fi
