NTP 시간 동기화 환경 설정하기 – Linux, windows

Windows

 C:\\>net time /setsntp:\”192.168.123.199 192.168.123.200\”
 명령을 잘 실행했습니다.
 
C:\\>net time /querysntp
 현재 SNTP 값: 192.168.123.199 192.168.123.200
 

명령을 잘 실행했습니다.
 

C:\\>
 

Linux

 [root@NODE01 modules]# cat /etc/ntp.conf
 server 172.18.56.45
 driftfile /etc/ntp/drift
 multicastclient
 broadcastdelay 0.008
 authenticate no
 keys /etc/ntp/keys
 trustedkey 65535
 requestkey 65535
 controlkey 65535

 [root@NODE01 modules]# cat /etc/ntp/
 drift keys ntpservers step-tickers

[root@NODE01 modules]# cat /etc/ntp/drift
7.467

 [root@NODE01 modules]# cat /etc/ntp/keys
 #
 # PLEASE DO NOT USE THE DEFAULT VALUES HERE. Pick your own, or remote
 # systems might be able to reset your clock at will. Note also that
 # ntpd is started with a -A flag, disabling authentication, that
 # will have to be removed as well.
 #
 #65535 M akey
 #1 M pass

 [root@NODE01 modules]# cat /etc/ntp/ntpservers
clock.redhat.com
 clock2.redhat.com

 [root@NODE01 modules]# cat /etc/ntp/step-tickers
172.18.56.45

 [root@NODE01 modules]# ntpq -p
 remote refid st t when poll reach delay offset jitter
 ==============================================================================
 *NODEFM01 LOCAL(0) 11 u 56 64 377 0.134 -4.611 2.989
 POSCO NTP Server
 192.168.123.199
 192.168.123.200
 
[root@NODE01 modules]# cat /etc/ntp.conf
 server 192.168.123.199
 restrict 192.168.123.199 mask 255.255.255.255 nomodify notrap noquery
 server 192.168.123.200
 restrict 192.168.123.200 mask 255.255.255.255 nomodify notrap noquery

 [root@NODE01 modules]# cat /etc/ntp/step-tickers
 192.168.123.199
 192.168.123.200

 [root@NODE01 modules]# /etc/init.d/ntpd restart
 Shutting down ntpd: [ OK ]
 ntpd: Synchronizing with time server: [ OK ]
 Starting ntpd: [ OK ]

 [root@NODE01 modules]# ntpq -p
 remote refid st t when poll reach delay offset jitter
 ==============================================================================
 192.168.123.199 .GPS. 1 u 2 64 1 6.532 0.422 0.001
 192.168.123.200 .GPS. 1 u 1 64 1 6.743 0.632 0.001