守护进程

1.创建shell脚本

touch /data/image/deamon.sh
vi /data/image/deamon.sh

　　拷贝脚本

#!/bin/bash

test(){
        while true
        do
                echo `date`  >> /data/image/log.txt
                sleep 5                    
        done

　　　　 #source /etc/profile
　　　　 #java -jar /data/image-storage-application-1.0.0.jar --spring.profiles.active=vlad1-test >>/data/log/storage1/java.txt  2>&1　
}


case $1 in
start)
        path="/root/shouhu.pid"
        if [ -f $path ]; then
                pid=`cat /data/image/deamon.pid`
                echo "pid $pid running..."
        else
                test & 
                echo $! > /data/image/deamon.pid
                echo "running $!..." 
        fi
        ;;
stop)
        pid=`cat /data/image/deamon.pid`
		if [ -z pid  ]
		then
			kill -9 $pid
			echo "stop $pid..."
			rm -rf /data/image/deamon.pid
        
		fi
       ;;
restart)
        path="/data/image/deamon.pid"
        if [ -f "$path" ];then
                pid=`cat /data/image/deamon.pid`
                kill -9 $pid
                echo " stop $pid..."
                rm -rf /data/image/deamon.pid

                test &
                echo $! > /data/image/deamon.pid
                echo " restart $!..."
        else
                echo "not run..."
                test &
                echo $! > /data/image/deamon.pid
                echo "run $!..."
        fi 
        ;;
status)
        path="/data/image/deamon.pid"
        if [ -f $path ];then
                pid=`cat /data/image/deamon.pid`
                echo "$pid running..."
        else
                echo "not running..."
        fi
        ;;
*)
        echo "Usage:{start|stop|restart|status}"
        ;;

esac

　　2.修改文件为可执行

chmod +x deamon.sh

　　3.到/usr/lib/systemd/system下创建test-deamon.service

       CentOS 7的服务systemctl脚本存放在：/usr/lib/systemd/，有系统（system）和用户（user）之分，需要开机不登陆就能运行的程序，存在系统服务里，即：/usr/lib/systemd/system目录下。每一个服务以.service结尾，一般会分为3部分：[Unit]、[Service]和[Install]

[Unit]  
Description=way test 
After=network.target  
   
[Service]  
Type=forking  
PIDFile=/data/image/deamon.pid  
ExecStart=/data/image/deamon.sh  start
ExecReload=/data/image/deamon.sh  restart
ExecStop=/data/image/deamon.sh  stop
PrivateTmp=true  
Restart=on-failure
RestartSec=1s
   
[Install]  
WantedBy=multi-user.target

　　

4.启动守护线程

systemctl enable test-deamon.service

#查看状态
systemctl status test-deamon.service

启动
systemctl start  test-deamon.service

　　5.验证杀掉进程是否跑起来

 

 

docker容器需要加上 

--privileged=true 和 /usr/sbin/init

docker run -i -t -d --privileged=true  -v /usr/local/cpp/matching${index}:/usr/local/cpp/matching -v /data/Image-Storage-Application${index}:/data/Image-Storage-Application${index} -v /data/log/storage${index}:/data/log/storage${index} -p ${port}:${port} --network=arcloud_net --link eureka:eureka-server --name=vlad1 yangzhiran/images-pretty:1.0.0 /usr/sbin/init

　　

 

 

参考：

 

systemd - CentOS 7进程守护&监控

 

centos7用shell创建守护进程，并设置为系统服务，开机自动启动