时间同步

CM
datetime-syns.sh

#!/bin/sh
# step 1:ntpd stop
/sbin/service ntpd stop
# step 2:sync datetime
/usr/sbin/ntpdate bigdata-cdh104.zc.com
# step 3:ntpd start
/sbin/service ntpd start

$ sudo chmod u+x datetime-syns.sh
$ sudo crontab -e
>>>内容
    0-59/10 * * * * /bin/sh /opt/cloudera/datetime-syns.sh