shell stop|start|restart

参考

1、shell脚本start、stop、restart_爱学习 爱分享的博客-CSDN博客

2、echo 拼接字符串：https://www.csdn.net/tags/OtTacg1sMTc5MS1ibG9n.html

3、字符串判空：

shell判断字符串为空的方法-linux运维-PHP中文网

 

1、学一下while read line 

这个命令对于批量关闭某些进程的遍历很有用

[root@lhy-05 prometheus]# docker ps | awk '{print $1}'
CONTAINER
44b52fb4239d
6c167d8bf4e0
5ab159dab98c
[root@lhy-05 prometheus]# 

查找运行的容器并输出容器id 

str="-test"
docker ps | awk '{print $1}' | while read pid
do
tmp=${pid}${str}
echo ${tmp}
done

[root@lhy-05 prometheus]# sh test.sh 
CONTAINER-test
44b52fb4239d-test
6c167d8bf4e0-test
5ab159dab98c-test
[root@lhy-05 prometheus]# 

2、学一下查找某个进程是否存在

查看Prometheus启动的容器是否存在

[root@lhy-05 prometheus]# cat test.sh 
container_id=`docker ps | grep prometheus |  awk '{print $1}'`
if [ -n "${container_id}" ];then
  echo ${container_id}
else
  echo "prometheus进程不存在"
fi

3、stop|start|restart

需求：写个shell脚本，只允许输入start，stop和restart参数，实现Prometheus docker容器的启动停止和重启功能

[root@lhy-05 prometheus]# cat run.sh 
#!/bin/bash
start(){
 docker start prometheus
}
 
stop(){  
 container_id=`docker ps | grep prometheus | awk '{print $1}'`
 if [ -z "${container_id}" ];then
    echo "dockerprometheus is not running"
 else
    docker stop ${container_id}
 fi
}
 
case "$1" in  
start)  
start  
;;  
stop)  
stop  
;;    
restart)  
stop  
start  
;;  
*)  
echo 'Only param {start|stop|restart} is supported'
exit 1  
;;  
esac