NTP配置内网中集群机器的时间同步

[huiyunltd@hadoop-senior ~]$ rpm -qa|grep ntp[huiyunltd@hadoop-senior ~]$ sudo vim /etc/ntp.confrestrict 192.168.8.0 mask 255.255.252.0 nomodify notrap#server 0.centos.pool.ntp.org#server 1.centos.pool.ntp.org#server 2.centos.pool.ntp.orgserver  127.127.1.0     # local clockfudge   127.127.1.0 stratum 10  [huiyunltd@hadoop-senior ~]$ sudo vim /etc/sysconfig/ntpd# Drop root to id 'ntp:ntp' by default.SYNC_HWCLOCK=yesOPTIONS="-u ntp:ntp -p /var/run/ntpd.pid -g"[huiyunltd@hadoop-senior ~]$ sudo service ntpd start[huiyunltd@hadoop-senior ~]$ sudo service ntpd status[huiyunltd@hadoop-senior ~]$ sudo service ntpd status[huiyunltd@hadoop-senior ~]$ sudo chkconfig ntpd on[huiyunltd@hadoop-senior ~]$ sudo chkconfig --list|grep ntpdntpd             0:off   1:off   2:on    3:on    4:on    5:on    6:off[huiyunltd@hadoop-senior02 ~]$ sudo crontab -e0-59/10 * * * * /usr/sbin/ntpdate hadoop-senior.huiyunltd.com[huiyunltd@hadoop-senior ~]$ sudo date -s 2017-06-23[huiyunltd@hadoop-senior ~]$ sudo date -s 13:02:10