Linux下为重要的进程创建监控脚本watchdog.sh

watchdog.sh

#! /bin/sh
PRO_NAME=frpc
NOW=`date  +'%Y-%m-%d %H:%M:%S'`
# while true; do
    NUM=`ps aux | grep ${PRO_NAME} | grep -v grep | wc -l `
    if [ "${NUM}" -lt "1" ]; then
        echo "${NOW} ${PRO_NAME} was dead!"
        nohup ./${PRO_NAME} -c ../etc/frpc.ini &
        echo "${NOW} restart ok!"
    elif [ "${NUM}" -gt "1" ]; then
        # 出现多个同名进程的场景，这里仅做日志记录
        echo "${NOW} ${PRO_NAME} more than 1!"
    fi
    # 检验进程是否僵死
    NUM_STAT=`ps aux | grep ${PRO_NAME} | grep -E "T|Z" | grep -v grep | wc -l`
    if [ "${NUM_STAT}" -gt "0" ]; then
        echo "${NOW} ${PRO_NAME} maybe dead!"
        killall -9 ${PRO_NAME}
        nohup ./${PRO_NAME} -c ../etc/frpc.ini &
        echo "${NOW} restart ok!"
    fi
# done

# set crontab
# watchdog for frpc
#* * * * * cd /usr/local/frpc/bin; sh watchdog.sh > watchdog.log 2>&1 &