Pomelo Lee workspace

#!/bin/bash
. /etc/profile
restart() {
  /opt/cloudera/parcels/presto/bin/launcher restart &
}
pid=$(ps -ef |grep PrestoServer |grep -v "grep"| awk '{print $2}')
if [[ `expr match "$pid" "[0-9][0-9]*$"` == 0 ]];
then
    echo "-----------------------------------------"
    echo $(date +"%y-%m-%d %H:%M:%S") >> /web/apps/presto/presto_monitor.log
    restart
    echo "Presto crash，restart finish." >> /web/apps/presto/presto_monitor.log
fi
 
#做定时任务监控后自动重启
 
*/10 * * * * sh /web/apps/presto/presto_monitor.sh
 
##编辑定时任务新增
crontab -e 
 
# 重启crond
systemctl reload crond
systemctl restart crond
 
# 查看当前用户定时任务
crontab -l
 
# 通过日志查看是否生效
tail -100 /var/log/cron