常见的linux上的服务重启脚本

手写linux上的重启脚本，先把提纲列下

1.检查进程是否存在

存在杀死

2.备份原来的包到指定目录

3. 拉取新包，我这边为了简便，没有从jenkins slave上拿

4.启动命令

5.检查是否进程起来了

#!/bin/bash

###path
JAVA=/usr/java/jdk1.8.0_211-amd64/bin/java
APP_HOME=/opt/88bugs
APPNAME=TestPlatform.jar
APP_PARAM="--spring.config.location=${APP_HOME}/application.properties"

####check wheather the port is running, if yes kill it
PID=`ps -ef | grep ${APP_HOME}/${APPNAME} | grep -v grep | awk '{print $2}'`
echo ${PID}

if test -z ${PID}
then
	echo "进程没有启动！"

else
	echo "will shutdown this process"
	kill -9 ${PID}
	sleep 2
fi

####backuop
mv ${APP_HOME}/${APPNAME} ${APP_HOME}/backup/${APPNAME}-date +%Y%m%d%H%M%S

####deploy the war package
cp -r /opt/${APPNAME}  ${APP_HOME}/${APPNAME}

##### start the process#
nohup ${JAVA} -jar ${APP_HOME}/${APPNAME} ${APP_PARAM}  > ${APP_HOME}/catalina.out 2>&1  &

afterPID=`ps -ef | grep ${APP_HOME}/${APPNAME} | grep -v grep | awk '{print $2}'`
echo ${afterPID}
sleep 10

if test -z ${afterPID}
then
	echo "部署失败"
else
	echo "部署成功"
fi

若脚本希望既可以停止服务，又可以重启服务，

那么结构屡一下

配置环境，可供其他项目更改细节使用

获取输入，条件如果输入的是a，则执行a的方法；如果是b则执行b的方法体，什么都不是，即不是指定的指令，输出提示“您输入的指令没有对应的方法哟”

在上面的脚本上，更改些许即可

#!/bin/bash

#server 

JAVA=/usr/java/jdk1.8.0_211-amd64/bin/java
APP_HOME=/opt/88bugs
APP_NAME=TestPlatform.jar
APP_PARAM="--spring.config.location=${APP_HOME}/application.properties"

case $1 in
start)
PID=$(ps -ef | grep ${APP_NAME} | grep -v grep | awk '{print $2}')
if [ -z "$PID" ] ;then
        echo "start ${APP_NAME}"
        nohup ${JAVA} -jar ${APP_HOME}/${APP_NAME} ${APP_PARAM}  > ${APP_HOME}/catalina.out 2>&1  &
else
        echo "${APP_NAME} is running"
fi
;;

stop)
PID=$(ps -ef | grep ${APP_NAME} | grep -v grep | awk '{print $2}')
if [ -z "$PID" ] ;then
        echo "${APP_NAME} is not running"
else
        echo "stop ${APP_NAME}"
        kill -9 $PID
fi
;;

restart)
PID=$(ps -ef | grep ${APP_NAME} | grep -v grep | awk '{print $2}')
if [ -z "$PID" ] ;then
        echo "start ${APP_NAME}"
        nohup ${JAVA} -jar ${APP_HOME}/${APP_NAME} ${APP_PARAM}   > ${APP_HOME}/catalina.out 2>&1  &
else
        echo "stop ${APP_NAME}"
        kill -9 $PID
        echo "start ${APP_NAME}"
        nohup ${JAVA} -jar ${APP_HOME}/${APP_NAME} ${APP_PARAM}   > ${APP_HOME}/catalina.out 2>&1  &
fi
;;

backup)
PID=$(ps -ef | grep ${APP_NAME} | grep -v grep | awk '{print $2}')
if [ -z "$PID" ] ;then
        echo "${APP_NAME} is not running,will backup files"
	mv ${APP_HOME}/${APP_NAME} ${APP_HOME}/backup/${APP_NAME}-$(date +%Y%m%d%H%M%S)
else
        echo "stop ${APP_NAME}"
        kill -9 $PID
        echo "will backup files..."
        mv ${APP_HOME}/${APP_NAME} ${APP_HOME}/backup/${APP_NAME}-$(date +%Y%m%d%H%M%S)
fi
;;

logs)
tail -f ${APP_HOME}/catalina.out
;;

status)
PID=$(ps -ef | grep ${APP_NAME} | grep -v grep | awk '{print $2}')
if [ -z "$PID" ] ;then
        echo "${APP_NAME} is not running"
else
        echo "${APP_NAME} is running, pid $PID"
fi
;;

*)
echo "您输入的指令没有对应的方法哟"

esac