2018-09-27【如何写服务自启】

1.例子：如何给java服务实现自启动。解决机器重启后保持服务正常。
获取java服务的路径

image.png

2.编写启动脚本
这里可以写代码或者文字

 #!/bin/sh
# chkconfig: 2345 90 90
# Description: {{ app }} service                                                        

. /etc/init.d/functions

export HOME
source /etc/profile
PATH=$PATH:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
HYBRID_APP_HOME=/usr/local/services/{{ app }}/
cd ${HYBRID_APP_HOME}
function start() {
/bin/bash ${HYBRID_APP_HOME}/bin/startup.sh
if [ $? -eq 0 ];then
    action "Starting {{ app }} Server" /bin/true
else
    action "Starting {{ app }} Server" /bin/false
fi
PID=`ps -ef | grep '{{ app }}' | egrep -v 'grep' | awk '{print $2}'`
echo $PID > /var/run/{{ app }}.pid
}

function stop() {
    /bin/bash ${HYBRID_APP_HOME}/bin/shutdown.sh
   if [ $? -eq 0 ];then
       action "Starting {{ app }} Server" /bin/true
   else
       action "Starting {{ app }} Server" /bin/false
   fi
}

function status() {
    PID=`ps -ef | grep '{{ app }}' | egrep -v 'grep' | awk '{print $2}'`
    if [ $PID ];then
        echo -e "{{ app }} \033[32mRunning\033[0m (PID:$PID)..."
    else
        echo -e "{{ app }}\033[31m Not running\033[0m..."   
    fi
}

case "$1" in
  start)
     start
     ;;
  stop)
     stop
     ;;
  restart)
     $0 stop
     $0 start
     ;;
  status)
     status
     ;;
  *)
     echo "Usage: service {{ app }} {start|stop|restart|status}"
     exit 1
esac

exit 0

3.把相应的路径写上。放到/etc/ini.d下

image.png

4.执行

chkconfig --add cas
/sbin/chkconfig cas on

即可