编辑Crontab

crontab -e

按i进行编辑

*/1 * * * * /root/monitor.sh     # 每分钟运行一遍monitor.sh脚本
0 5 * * * /sbin/reboot           # 每天凌晨5点自动重启服务器
*/1 * * * * /root/monitor.sh     # 每分钟运行一遍monitor.sh脚本
0 5 * * * /sbin/reboot           # 每天凌晨5点自动重启服务器

 

重启服务

systemctl restart crond

monitor.sh

#!/bin/sh
echo "==================start monitor==============="
#define  commonprocessnum
commonprocessnum=1
#define sleeptime,4 miniutes
sleeptime=30
#iternal
internal=5

#3 define pypath
pypath='/data/centos_env/run_exe'


#monitor the othe process whether has run
#while ((  1 < 11 ))
#do

   # 3 check the ptps and if no running then start the  prcess
    gfid=`ps -ef | grep -i feature-extract |grep -v 'grep'| wc -l`
    if [ ${gfid} -ge ${commonprocessnum} ]; then
       sleep 1 
    else 
       cd $pypath
        ./feature-extract &
       sleep ${internal}
       echo "=========3 start the feature-extract process " 
    fi



    #sleppzzz
    sleep ${sleeptime}
#done