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# yum install ntp
»òÕß´Ó°²×°Å̲éÕÒ ntp µÄrpm °ü°²×°
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# crontab -e
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*/15 * * * * ntpdate 210.72.145.44
210.72.145.44 ΪÖйú¹ú¼ÒÊÚʱÖÐÐÄ·þÎñÆ÷µØÖ·£¬ÕâÑù¸Ã»ú¾Í¿ÉÒÔÓë¹ú¼ÒÊÚʱÖÐÐĽøÐÐͬ²½ÁË¡£
Òª¼ÜÉè±¾µØʱ¼ä·þÎñÆ÷£¬Ö»ÐèÒªÐÞ¸Ä /etc/ntp.confÎļþÀïµÄ¼¸¸ö¼òµ¥µÄÅäÖþͿÉÒÔÁË£¬ÒÔÏÂÊÇÎÒÌí¼ÓµÄÅäÖãº
#add by Liu Li
server 210.72.145.44 prefer
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server 218.21.130.42
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restrict 192.168.100.0 mask 255.255.255.0
nomodify
(ÔÊÐíÄÚÍøͨѶ
)
restrict 0.0.0.0 mask 0.0.0.0 nomodify
notrap noquery notrust
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¹ýÀ´¸üÐÂʱ¼ä
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ΪÁËʹNTP·þÎñ¿ÉÒÔÔÚϵͳÒýµ¼µÄʱºò×Ô¶¯Æô¶¯£¬Ö´ÐУº
# chkconfig ntpd on
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# /etc/init.d/ntpd start
# /etc/init.d/ntpd stop
# /etc/init.d/ntpd restart
½«Í¬²½ºÃµÄʱ¼äдµ½CMOSÀï
vi /etc/sysconfig/ntpd
SYNC_HWCLOCK=yes
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# pgrep ntpd
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# ntpq -p
ÓÃntpstat Ò²¿ÉÒԲ鿴һЩͬ²½×´Ì¬£¬ÓÃnetstat -ntlup²é¿´¶Ë¿ÚʹÓÃÇé¿ö£¡
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# crontab -e
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*/15 * * * * ntpdate ·þÎñÆ÷¶ËIP¡£
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