配置NTP-server
环境:
[root@LNMP~]#cat/etc/redhat-release CentOSrelease6.5(Final) [root@LNMP~]#uname-r 2.6.32-431.el6.x86_64 [root@LNMP~]#uname-m x86_64
安装NTP软件:
[root@LNMP~]#yuminstall-yntp
检查远程ntp服务器是否可用:
[root@LNMP~]#ntpdate-qntp5.aliyun.com server182.92.12.11,stratum2,offset-0.011808,delay0.03224 20Apr21:15:37ntpdate[3429]:adjusttimeserver182.92.12.11offset-0.011808sec
配置ntp服务之前,先手动同步一下时间:
[root@LNMP~]#ntpdatentp5.aliyun.com
编辑NTP配置文件:(文件位置在/etc/ntp.conf,编辑前备份)
[root@LNMP~]#cp/etc/ntp.conf/etc/ntp.conf.ori [root@LNMP~]#vim/etc/ntp.conf restrict192.168.22.0mask255.255.255.0nomodifynotrap serverntp1.aliyun.com serverntp2.aliyun.com serverntp3.aliyun.com serverntp4.aliyun.com serverntp5.aliyun.com serverntp6.aliyun.com serverntp7.aliyun.com #UndisciplinedLocalClock.Thisisafakedriverintendedforbackup #andwhennooutsidesourceofsynchronizedtimeisavailable. #外部时间服务器不可用时,以本地时间作为时间服务 server127.127.1.0#localclock fudge127.127.1.0stratum10
把之前的参数注释掉:
#server0.centos.pool.ntp.orgiburst #server1.centos.pool.ntp.orgiburst #server2.centos.pool.ntp.orgiburst #server3.centos.pool.ntp.orgiburst
检查服务状态:
[root@LNMP~]#netstat-lntup|grepntp udp00192.168.22.134:1230.0.0.0:*1186/ntpd udp00127.0.0.1:1230.0.0.0:*1186/ntpd udp000.0.0.0:1230.0.0.0:*1186/ntpd udp00fe80::20c:29ff:fe51:259b:123:::*1186/ntpd udp00::1:123:::*1186/ntpd udp00:::123:::*1186/ntpd
[root@LNMP~]#ntpq-p remoterefidsttwhenpollreachdelayoffsetjitter ============================================================================== *time5.aliyun.co10.137.38.862u1812563779.293-1.9901.154 +120.25.115.1910.137.38.862u13825637745.598-1.9241.010 +120.25.115.2010.137.38.862u15725637745.795-1.7131.113 -time4.aliyun.co10.137.38.862u24725637745.650-5.1362.278 -time6.aliyun.co10.137.38.862u625637774.0538.7283.008 LOCAL(0).LOCL.10l128m6400.0000.0000.000
ntpstat 命令查看时间同步状态,这个一般需要5-10分钟后才能成功连接和同步。所以,服务器启动后需要稍等下。
[root@LNMP~]#ntpstat synchronisedtoNTPserver(182.92.12.11)atstratum3 timecorrecttowithin30ms pollingserverevery256s
如果服务器当前时间和远程ntp服务器时间相差很多或者服务器时间比远程ntp服务器时间要快的话,那么服务器是不会与远程ntp服务器同步时间的
需要在ntp.conf中加上一行参数:
tinkerpanic0
将同步的时间与硬件时钟进行同步:
[root@LNMP~]#vim/etc/sysconfig/ntpd 添加一行 SYNC_HWCLOCK="yes" 保存退出,重启ntp服务
至此,NTP-server时间服务器配置完成!
配置内网NTP-client
首先需要安装NTPD服务,然后配置为自启动(与NTP-Server完全一样)。然后找其中一台配置/etc/ntp.conf文件,配置完成验证通过后,拷贝到其他客户端机器,直接使用即可。
[root@Proxy~]#grep-Ev'#'/etc/ntp.conf driftfile/var/lib/ntp/drift restrict127.0.0.1 restrict-6::1 server192.168.22.134 restrict192.168.22.134nomodifynotrapnoquery fudge127.127.1.0stratum10 includefile/etc/ntp/crypto/pw keys/etc/ntp/keys
将同步的时间与硬件时钟进行同步:
[root@Proxy~]#vim/etc/sysconfig/ntpd 添加一行: SYNC_HWCLOCK="yes" 保存退出,重启ntp服务。
检查ntp服务状态:
[root@Proxy~]#netstat-lntup|grepntp udp00192.168.22.136:1230.0.0.0:*2833/ntpd udp00127.0.0.1:1230.0.0.0:*2833/ntpd udp000.0.0.0:1230.0.0.0:*2833/ntpd udp00fe80::20c:29ff:feff:3bf5:123:::*2833/ntpd udp00::1:123:::*2833/ntpd udp00:::123:::*2833/ntpd [root@Proxy~]#ntpq-p remoterefidsttwhenpollreachdelayoffsetjitter ============================================================================== 192.168.22.134173.255.246.133u2064170.21824.1950.084 *LOCAL(0).LOCL.10l2464170.0000.0000.000 [root@Proxy~]#ntpstat synchronisedtoNTPserver(192.168.22.134)atstratum4 timecorrecttowithin53ms pollingserverevery128s原文链接:https://www.f2er.com/centos/377863.html