{"id":845,"date":"2018-06-26T09:56:06","date_gmt":"2018-06-26T00:56:06","guid":{"rendered":"https:\/\/pigletstory.co.kr\/620-2\/"},"modified":"2018-06-26T09:56:06","modified_gmt":"2018-06-26T00:56:06","slug":"620-2","status":"publish","type":"post","link":"https:\/\/pigletstory.co.kr\/?p=845","title":{"rendered":"# RHEL, CentOS\uc5d0\uc11c ntp \uc11c\ubc84 \uc124\uc815\ud558\uae30(\uc0ac\uc124\ub9dd \ub0b4\ubd80 \uc11c\ubc84\ub4e4\uc758 \uc2dc\uac04 \ub3d9\uae30\ud654) #"},"content":{"rendered":"
\n


<\/b><\/p>\n

RHEL, CentOS\uc5d0\uc11c ntp \uc11c\ubc84 \uc124\uc815\ud558\uae30(\uc0ac\uc124\ub9dd \ub0b4\ubd80 \uc11c\ubc84\ub4e4\uc758 \uc2dc\uac04 \ub3d9\uae30\ud654)<\/b><\/span><\/p>\n


<\/b><\/p>\n


<\/b><\/p>\n


<\/b><\/p>\n

\uc0ac\uc124\ub9dd \ub0b4\ubd80 \uc11c\ubc84\ub4e4\uc758 \uc2dc\uac04 \ub3d9\uae30\ud654\ub97c \uc704\ud574\uc11c, ntp \uc11c\ubc84 \ub370\ubaac\uc744 \uc0ac\uc6a9\ud558\ub294 \ubc29\ubc95\uc785\ub2c8\ub2e4.<\/b><\/span><\/p>\n


<\/b><\/p>\n

\uba3c\uc800 \uc2dc\uac04\uc758 \uae30\uc900\uc774 \ub418\ub294 \uc11c\ubc84\ub97c \uc120\uc815\ud569\ub2c8\ub2e4. \uc608\ub85c \uadf8 \uc11c\ubc84\uac00 192.168.100.15 \ub77c\uace0 \ud569\ub2c8\ub2e4.<\/b><\/span><\/p>\n

\uadf8\ub9ac\uace0, \uac01 \uc11c\ubc84\ub4e4\uc774 192.168.100.x\u00a0 \ub124\ud2b8\uc6cc\ud06c\uc5d0 \uc18d\ud574\uc788\ub2e4\uace0 \uac00\uc815\ud569\ub2c8\ub2e4.<\/b><\/span><\/p>\n


<\/b><\/p>\n

\uc81c\uc77c \uc6b0\uc120\uc801\uc73c\ub85c \ubaa8\ub4e0 \uc11c\ubc84\uc5d0 ntp \ub370\ubaac\uc744 \uc124\uce58\ud558\uc5ec\uc57c \ud569\ub2c8\ub2e4.<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

[root@localhost ~]# yum install ntp<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

Loaded plugins: dellsysid, fastestmirror<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

Loading mirror speeds from cached hostfile<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

\u00a0* base: centos.tt.co.kr<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

\u00a0* extras: centos.tt.co.kr\uce58<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

\u00a0* updates: centos.tt.co.kr<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

base\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0| 2.1 kB\u00a0 \u00a0 \u00a000:00\u00a0 \u00a0 \u00a0<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

dell-omsa-indep\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 | 1.9 kB\u00a0 \u00a0 \u00a000:00\u00a0 \u00a0 \u00a0<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

dell-omsa-specific\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0| 1.9 kB\u00a0 \u00a0 \u00a000:00\u00a0 \u00a0 \u00a0<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

extras\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0| 2.1 kB\u00a0 \u00a0 \u00a000:00\u00a0 \u00a0 \u00a0<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

updates\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 | 1.9 kB\u00a0 \u00a0 \u00a000:00\u00a0 \u00a0 \u00a0<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

updates\/primary_db\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0| 588 kB\u00a0 \u00a0 \u00a000:00\u00a0 \u00a0 \u00a0<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

Setting up Install Process<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

Resolving Dependencies<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

–> Running transaction check<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

—> Package ntp.x86_64 0:4.2.2p1-9.el5.centos.2.1 set to be updated<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

–> Finished Dependency Resolution<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n


<\/b><\/p>\n


<\/b><\/p>\n


<\/b><\/p>\n

Dependencies Resolved<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n


<\/b><\/p>\n


<\/b><\/p>\n


<\/b><\/p>\n

============================================================================================<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

\u00a0Package\u00a0 \u00a0 \u00a0 \u00a0 Arch\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Version\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0Repository\u00a0 \u00a0 \u00a0 \u00a0Size<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

============================================================================================<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

Installing:<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

\u00a0ntp\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 x86_64\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 4.2.2p1-9.el5.centos.2.1\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 base\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 1.3 M<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n


<\/b><\/p>\n


<\/b><\/p>\n


<\/b><\/p>\n

Transaction Summary<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

============================================================================================<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

Install\u00a0 \u00a0 \u00a0 \u00a01 Package(s)<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

Upgrade\u00a0 \u00a0 \u00a0 \u00a00 Package(s)<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n


<\/b><\/p>\n


<\/b><\/p>\n


<\/b><\/p>\n

Total download size: 1.3 M<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

Is this ok [y\/N]: y<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

Downloading Packages:<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

ntp-4.2.2p1-9.el5.centos.2.1.x86_64.rpm\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 | 1.3 MB\u00a0 \u00a0 \u00a000:00\u00a0 \u00a0 \u00a0<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

Running rpm_check_debug<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

Running Transaction Test<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

Finished Transaction Test<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

Transaction Test Succeeded<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

Running Transaction<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

\u00a0 Installing\u00a0 \u00a0 \u00a0: ntp\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 1\/1\u00a0<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n


<\/b><\/p>\n


<\/b><\/p>\n


<\/b><\/p>\n

Installed:<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

\u00a0 ntp.x86_64 0:4.2.2p1-9.el5.centos.2.1<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

\uc124\uce58\uac00 \uc644\ub8cc\ub418\uc5c8\uc73c\uba74, ntp \uad00\ub828 \uc124\uc815\uc744 \ud558\uba74 \ub429\ub2c8\ub2e4.<\/b><\/span><\/p>\n

\uae30\uc874\uc5d0 \uc790\ub3d9\uc73c\ub85c \uc124\uce58\ub418\ub294 \/etc\/ntp.conf \uc5d0\uc11c \uc77c\ubd80\ub9cc \uace0\uce58\uba74 \ub429\ub2c8\ub2e4.<\/b><\/span><\/p>\n


<\/b><\/p>\n

\uc0ac\uc124\ub9dd\ub0b4\uc5d0\uc11c \uc2dc\uac04\uc758 \uae30\uc900\uc774 \ub418\ub294 \uc608\ub85c 192.168.100.15 \ubc88 \uc11c\ubc84\ub294 \/etc\/ntp.conf \ud30c\uc77c\uc5d0\uc11c \ub2e4\uc74c \ubd80\ubd84\ub9cc \uc218\uc815\ud558\uc5ec \uc124\uc815\ud569\ub2c8\ub2e4.<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

# Hosts on local network are less restricted.<\/b><\/span><\/p>\n

\u00a0#restrict 192.168.1.0 mask 255.255.255.0 nomodify notrap<\/b><\/span><\/p>\n

\u00a0restrict 192.168.100.0 mask 255.255.255.0 nomodify notrap # \ub85c\uceec \uc11c\ubc84\ub4e4\uc774 \uc2dc\uac04 \uc815\ubcf4\ub97c \uac00\uc838\uac08 \uc218 \uc788\ub3c4\ub85d, \uc811\uadfc\uc81c\ud55c\uc744 \ud480\uc5b4\uc90d\ub2c8\ub2e4.<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

# Use public servers from the pool.ntp.org project.<\/b><\/span><\/p>\n

\u00a0# Please consider joining the pool (http:\/\/www.pool.ntp.org\/join.html).<\/b><\/span><\/p>\n

\u00a0#server 0.rhel.pool.ntp.org\u00a0 # \uae30\uc874\uc5d0 \uc124\uc815\ub41c server \ub4e4\uc744 \ubaa8\ub450 \uc0ac\uc6a9\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.<\/b><\/span><\/p>\n

#server 1.rhel.pool.ntp.org\u00a0 # \uc624\uc9c1 \uc790\uccb4 \uc2dc\uc2a4\ud15c\uc758 \ud074\ub7ed\ub9cc\uc744 \uc2dc\uac04\uc73c\ub85c \uc0ac\uc6a9\ud569\ub2c8\ub2e4. (\uc774 \uc11c\ubc84\uac00 \uae30\uc900\uc774\ubbc0\ub85c,)<\/b><\/span><\/p>\n

#server 2.rhel.pool.ntp.org<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

192.168.100.15 \ubc88 \uc11c\ubc84\ub294 \ud604\uc7ac \uc0ac\uc124\ub9dd\uc758 \uae30\uc900 \uc2dc\uac04\uc774 \ub418\ub294 \uc11c\ubc84\uc774\ubbc0\ub85c, \uc624\uc9c1 \uc790\uccb4 \uc2dc\uc2a4\ud15c\uc758 \ud074\ub7ed\ub9cc\uc744 \uc2dc\uac04\uc73c\ub85c \uc0ac\uc6a9\ud569\ub2c8\ub2e4. \uadf8\ub7ec\ubbc0\ub85c, \/etc\/ntp.conf \ud30c\uc77c \ub0b4\uc5d0\uc11c server \ub77c\ub294 \ubb38\uad6c\ub294 \uc720\uc77c\ud558\uac8c \ub2e4\uc74c \ud55c \uc904\ub9cc \uc874\uc7ac\ud558\uc5ec\uc57c \ud569\ub2c8\ub2e4.<\/b><\/span><\/p>\n

server\u00a0 127.127.1.0\u00a0 \u00a0 \u00a0# local clock<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

\ub2e4\uc74c\uc73c\ub85c, 192.168.100.x \ub124\ud2b8\uc6cc\ud06c\uc5d0 \uc874\uc7ac\ud558\ub294 \ub2e4\ub978 \uc11c\ubc84\ub4e4\uc740 \uae30\uc900 \uc2dc\uac04 \uc11c\ubc84\ub85c 192.168.100.15 \uc11c\ubc84\ub97c \uc0ac\uc6a9\ud558\ubbc0\ub85c, \/etc\/ntp.conf \ud30c\uc77c\uc5d0\uc11c \ub2e4\uc74c \ubd80\ubd84\ub9cc \uc218\uc815\ud558\uc5ec \uc124\uc815\ud569\ub2c8\ub2e4.<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

# Use public servers from the pool.ntp.org project.<\/b><\/span><\/p>\n

\u00a0# Please consider joining the pool (http:\/\/www.pool.ntp.org\/join.html).<\/b><\/span><\/p>\n

\u00a0#server 0.rhel.pool.ntp.org\u00a0 # \uae30\uc874\uc5d0 \uc124\uc815\ub41c server \ub4e4\uc744 \ubaa8\ub450 \uc0ac\uc6a9\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.<\/b><\/span><\/p>\n

\u00a0#server 1.rhel.pool.ntp.org<\/b><\/span><\/p>\n

\u00a0#server 2.rhel.pool.ntp.org<\/b><\/span><\/p>\n

\u00a0server 192.168.100.15\u00a0 # \uc0ac\uc124\ub9dd\ub0b4 \uc2dc\uac04 \uae30\uc900 \uc11c\ubc84\ub97c \uc9c0\uc815\ud569\ub2c8\ub2e4.<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

\uae30\uc900 \uc2dc\uac04 \uc11c\ubc84\uc778 192.168.100.15 \uc11c\ubc84\uc640 192.168.100.x \ub124\ud2b8\uc6cc\ud06c\uc5d0 \uc874\uc7ac\ud558\ub294 \ub2e4\ub978 \uc11c\ubc84\ub4e4\uc758 \uc124\uc815\uc774 \ub2e4\ub978 \uac83\uc740 \uae30\uc900 \uc11c\ubc84\ub97c \uc81c\uc678\ud55c \ub2e4\ub978 \uc11c\ubc84\ub4e4\uc740 \ubcc4\ub3c4\ub85c \uc2dc\uac04 \uc815\ubcf4\ub97c \ub2e4\ub978 \ucabd\uc5d0 \uc904 \ud544\uc694\uac00 \uc5c6\uae30 \ub54c\ubb38\uc785\ub2c8\ub2e4.( \uae30\uc900 \uc11c\ubc84\uc640 \ub3d9\uc77c\ud558\uac8c, \uc811\uadfc\uc81c\ud55c\uc744 \ud480\uc5b4\uc918\uc11c \ub610 \ub2e4\ub978 \uae30\uc900 \uc2dc\uac04 \uc11c\ubc84\ub85c \uc0ac\uc6a9\ud560 \uc218\ub3c4 \uc788\uc2b5\ub2c8\ub2e4\ub9cc, \uad00\ub9ac\uc790\uc758 \uc120\ud0dd\uc5d0 \ub530\ub974\uba74 \ub429\ub2c8\ub2e4.)<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

\uc124\uc815\uc774 \uc644\ub8cc\ub418\uc5c8\uc73c\uba74, ntpd \uc11c\ube44\uc2a4\ub97c \uc2dc\uc791\uc2dc\ud0a4\uace0, \ub9e4 \uc2dc\uc2a4\ud15c\uc774 \uc2dc\uc791\ub420 \ub54c\ub9c8\ub2e4 \uad6c\ub3d9\ub418\ub3c4\ub85d \uc124\uc815\ud569\ub2c8\ub2e4.<\/b><\/span><\/p>\n

[root@localhost ~]# service ntpd start<\/b><\/span><\/p>\n

\u00a0[root@localhost ~]# chkconfig ntpd on<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

ntpd \uc11c\ube44\uc2a4\uac00 \uc815\uc0c1\uc801\uc73c\ub85c \ub3d9\uc791\ud558\ub294\uc9c0\ub97c \ud655\uc778\ud569\ub2c8\ub2e4.<\/b><\/span><\/p>\n

[root@localhost ~]# ps -ef |grep ntp<\/b><\/span><\/p>\n

\u00a0ntp\u00a0 \u00a0 \u00a0 23483\u00a0 \u00a0 \u00a01\u00a0 0 14:24 ?\u00a0 \u00a0 \u00a0 \u00a0 00:00:00 ntpd -u ntp:ntp -p \/var\/run\/ntpd.pid -g<\/b><\/span><\/p>\n

\u00a0root\u00a0 \u00a0 \u00a024326 23151\u00a0 0 15:10 pts\/12\u00a0 \u00a000:00:00 grep ntp<\/b><\/span><\/p>\n

\u00a0[root@localhost ~]#\u00a0<\/b><\/span><\/p>\n


<\/b><\/p>\n

ntpd \uc11c\ube44\uc2a4\uac00 \uc2dc\uac04\uc744 \uc815\uc0c1\uc801\uc73c\ub85c \ub3d9\uae30\ud654\ud558\uace0 \uc788\ub294 \uc5ec\ubd80\ub294 \ub2e4\uc74c\uacfc \uac19\uc774 \ud655\uc778\ud569\ub2c8\ub2e4.<\/b><\/span><\/p>\n

\uae30\uc900 \uc2dc\uac04 \uc11c\ubc84\uc778 192.168.100.15 \uc11c\ubc84\ub294 \ub3d9\uae30\ud654 \uc815\ubcf4\ub97c \uc790\uae30 \uc790\uc2e0\ubfd0\uc774\ubbc0\ub85c, \uacb0\uacfc\uac00 \ub2e4\uc74c\uacfc \uac19\uc774 \ub098\ud0c0\ub098\uace0,<\/b><\/span><\/p>\n

\u00a0[root@localhost ~]# ntpq -pn<\/b><\/span><\/p>\n

\u00a0 \u00a0 \u00a0 remote\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0refid\u00a0 \u00a0 \u00a0 st t when poll reach\u00a0 \u00a0delay\u00a0 \u00a0offset\u00a0 jitter<\/b><\/span><\/p>\n

\u00a0==============================================================================<\/b><\/span><\/p>\n

\u00a0*127.127.1.0\u00a0 \u00a0 \u00a0.LOCL.\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 10 l\u00a0 \u00a019\u00a0 \u00a064\u00a0 377\u00a0 \u00a0 0.000\u00a0 \u00a0 0.000\u00a0 \u00a00.001<\/b><\/span><\/p>\n

\u00a0[root@localhost ~]#\u00a0<\/b><\/span><\/p>\n


<\/b><\/p>\n

192.168.100.x \ub124\ud2b8\uc6cc\ud06c\uc5d0 \uc874\uc7ac\ud558\ub294 \ub2e4\ub978 \uc11c\ubc84\ub4e4\uc740 \uae30\uc900 \uc2dc\uac04 \uc11c\ubc84\uc778 192.168.100.15 \uc11c\ubc84\ub97c \ucc38\uc870\ud558\uace0 \uc788\uae30 \ub54c\ubb38\uc5d0, \ub2e4\uc74c\uacfc \uac19\uc774 \uacb0\uacfc\uac00 \ucd9c\ub825\ub429\ub2c8\ub2e4.<\/b><\/span><\/p>\n

\u00a0[root@Server1 etc]# ntpq -pn<\/b><\/span><\/p>\n

\u00a0 \u00a0 \u00a0 remote\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0refid\u00a0 \u00a0 \u00a0 st t when poll reach\u00a0 \u00a0delay\u00a0 \u00a0offset\u00a0 jitter<\/b><\/span><\/p>\n

\u00a0==============================================================================<\/b><\/span><\/p>\n

\u00a0*192.168..100.15\u00a0 LOCAL(0)\u00a0 \u00a0 \u00a0 \u00a0 11 u\u00a0 \u00a047\u00a0 \u00a064\u00a0 377\u00a0 \u00a0 0.156\u00a0 \u00a016.448\u00a0 14.100<\/b><\/span><\/p>\n

\u00a0 127.127.1.0\u00a0 \u00a0 \u00a0.LOCL.\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 10 l\u00a0 \u00a040\u00a0 \u00a064\u00a0 377\u00a0 \u00a0 0.000\u00a0 \u00a0 0.000\u00a0 \u00a00.001<\/b><\/span><\/p>\n

\u00a0[root@Server1 etc]#\u00a0<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

\u00a0\ub0b4\ubd80 \ub124\ud2b8\uc6cc\ud06c\ub85c \ubcd1\ub82c \ud30c\uc77c \uc2dc\uc2a4\ud15c\uc744 \uad6c\ucd95\ud558\uc600\ub294\ub370;; \uac01\uac01 \uc11c\ubc84 \uc2dc\uac04\uc774 \uc81c\uac01\uac01\uc774\ub77c..\ub85c\uadf8 \ubd84\uc11d\uc2dc \uc5d0\ub85c\uc810\uc774 \ubc1c\uc0dd\ud558\uc5ec…<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

\uc0bd\uc9c8 \uc2dc\uc791\ud568…<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

\uc778\ud130\ub137\uacfc \ub0b4\ubd80 \ub124\ud2b8\uc6cc\ud06c\uc5d0 \ubaa8\ub450 \uc5f0\uacb0\ub41c client\ud558\ub098\ub97c \ub9cc\ub4e4\uc5b4\uc11c \uc791\uc5c5\ud558\uba74 \ub41c\ub2e4.<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

1. \uc218\ub3d9\uc73c\ub85c \uc11c\ubc84 time \ubcc0\uacbd\ud558\uae30\u00a0<\/b><\/span><\/p>\n


<\/b><\/p>\n

date -s “10:34:00 Jan 27, 2011”<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

[root@loss1 ~]# date<\/b><\/span><\/p>\n

Thu Jan 27 19:33:12 KST 2011<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

[root@loss1 ~]# date -s “10:34:00 Jan 27, 2011”<\/b><\/span><\/p>\n

Thu Jan 27 10:34:00 KST 2011<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

[root@loss1 ~]# date<\/b><\/span><\/p>\n

Thu Jan 27 10:34:01 KST 2011<\/b><\/span><\/p>\n

\u00a0\u00a0<\/b><\/span><\/p>\n

2. \ub0b4\ubd80\uc5d0 ntp\uc11c\ubc84 \uad6c\ucd95<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

[root@lclient1 storage]# cat \/etc\/ntp.conf\u00a0<\/b><\/span><\/p>\n

restrict default ignore<\/b><\/span><\/p>\n

restrict 127.0.0.1\u00a0<\/b><\/span><\/p>\n

multicastclient<\/b><\/span><\/p>\n

restrict 192.168.2.0 mask 255.255.255.0 nomodify notrap<\/b><\/span><\/p>\n

server ntp.postech.ac.kr<\/b><\/span><\/p>\n

server 127.127.1.0<\/b><\/span><\/p>\n

fudge 127.127.1.0 straturm 10<\/b><\/span><\/p>\n

driftfile \/var\/lib\/ntp\/drift<\/b><\/span><\/p>\n

broadcastdelay 0.008<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

\u00a0\u00a0<\/b><\/span><\/p>\n

restrict\ub294 \uc561\uc138\uc2a4 \uc81c\uc5b4<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

ignore \ubaa8\ub4e0 \ud328\ud0b7\uc744 \uac70\ubd80<\/b><\/span><\/p>\n

noquery ntpq \uc758 \ucffc\ub9ac\ub97c \ubb34\uc2dc<\/b><\/span><\/p>\n

nomodify\u3000\uc0c1\ud0dc \ud655\uc778\uc744 \ubb34\uc2dc<\/b><\/span><\/p>\n

noserve\u3000\uc2dc\uac04 \ub3d9\uae30 \uc694\uad6c\ub97c \uac70\ubd80<\/b><\/span><\/p>\n

notrust\u3000\uc2e0\ub8b0\ud558\uc9c0 \uc54a\ub294 \ud638\uc2a4\ud2b8 \uac70\ubd80<\/b><\/span><\/p>\n

notrap\u3000\ud328\ud0b7 \uac70\ubd80<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

\ubc14\ub85c client\uc5d0\uc11c \ub3d9\uae30\uba85\ub839\uc744 \ud558\uba74 \uc544\ub798\uc640 \uac19\uc774 \uc5d0\ub7ec\uac00 \ub098\uc628\ub2e4.<\/b><\/span><\/p>\n

\u00a0<\/b><\/span><\/p>\n

[root@loss22 ~]# ntpdate 192.168.2.102<\/b><\/span><\/p>\n

27 Jan 14:47:28 ntpdate[9295]: no server suitable for synchronization found<\/b><\/span><\/p>\n

[root@loss22 ~]# ntpdate 192.168.2.102<\/b><\/span><\/p>\n

27 Jan 14:47:52 ntpdate[9296]: no server suitable for synchronization found<\/b><\/span><\/p>\n

[root@loss22 ~]# ntpdate 192.168.2.102<\/b><\/span><\/p>\n


<\/b><\/p>\n

\u00a0<\/b><\/span><\/p>\n

ntpd \uc11c\ubc84\ub97c \uc2dc\uc791\ud558\uace0,, \uc57d 5\ubd84\uc815\ub3c4\uac00 \uc9c0\ub09c\ud6c4\uc5d0 client\uc5d0\uc11c \ud14c\uc2a4\ud2b8 \ud560\uac83…\uc65c 5\ubd84\uc778\uc9c0\ub294..\ub098\ub3c4 \ubaa8\ub984.. \uad6c\uae00\ub9c1 \uac80\uc0c9 \uacb0\uacfc\uac00 \uadf8\ub7ec\ud568..\u314e\u314e<\/b><\/span><\/p>\n

\u00a0\u00a0<\/b><\/span><\/p>\n

27 Jan 15:37:08 ntpdate[9297]: step time server 192.168.2.102 offset 2209.858796 sec<\/b><\/span><\/p>\n

[root@loss22 ~]# ntpdate 192.168.2.102<\/b><\/span><\/p>\n

27 Jan 15:37:14 ntpdate[9298]: adjust time server 192.168.2.102 offset -0.000024 sec<\/b><\/span><\/p>\n

[root@loss22 ~]# ntpdate 192.168.2.102<\/b><\/span><\/p>\n

27 Jan 15:37:15 ntpdate[9299]: adjust time server 192.168.2.102 offset 0.000005 sec<\/b><\/span><\/p>\n


<\/b><\/div>\n

<\/p>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"

RHEL, CentOS\uc5d0\uc11c ntp \uc11c\ubc84 \uc124\uc815\ud558\uae30(\uc0ac\uc124\ub9dd \ub0b4\ubd80 \uc11c\ubc84\ub4e4\uc758 \uc2dc\uac04 \ub3d9\uae30\ud654) \uc0ac\uc124\ub9dd \ub0b4\ubd80 \uc11c\ubc84\ub4e4\uc758 \uc2dc\uac04 \ub3d9\uae30\ud654\ub97c \uc704\ud574\uc11c, ntp \uc11c\ubc84 \ub370\ubaac\uc744 \uc0ac\uc6a9\ud558\ub294 \ubc29\ubc95\uc785\ub2c8\ub2e4. \uba3c\uc800 \uc2dc\uac04\uc758 \uae30\uc900\uc774 \ub418\ub294 \uc11c\ubc84\ub97c \uc120\uc815\ud569\ub2c8\ub2e4. \uc608\ub85c \uadf8 \uc11c\ubc84\uac00 192.168.100.15 \ub77c\uace0 \ud569\ub2c8\ub2e4. \uadf8\ub9ac\uace0, \uac01 \uc11c\ubc84\ub4e4\uc774 192.168.100.x\u00a0 \ub124\ud2b8\uc6cc\ud06c\uc5d0 \uc18d\ud574\uc788\ub2e4\uace0 \uac00\uc815\ud569\ub2c8\ub2e4. \uc81c\uc77c \uc6b0\uc120\uc801\uc73c\ub85c \ubaa8\ub4e0 \uc11c\ubc84\uc5d0 ntp \ub370\ubaac\uc744 \uc124\uce58\ud558\uc5ec\uc57c \ud569\ub2c8\ub2e4. \u00a0 [root@localhost ~]# yum install ntp \u00a0 Loaded … \ub354 \uc77d\uae30<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[6],"tags":[24,78,112,113,126],"class_list":["post-845","post","type-post","status-publish","format-standard","hentry","category-linux---","tag-centos-ntp","tag-linux-ntp","tag-ntp-","tag-ntp","tag-rocky-ntp"],"yoast_head":"\n# RHEL, CentOS\uc5d0\uc11c ntp \uc11c\ubc84 \uc124\uc815\ud558\uae30(\uc0ac\uc124\ub9dd \ub0b4\ubd80 \uc11c\ubc84\ub4e4\uc758 \uc2dc\uac04 \ub3d9\uae30\ud654) # - pigletstory \ube14\ub85c\uadf8<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/pigletstory.co.kr\/?p=845\" \/>\n<meta property=\"og:locale\" content=\"ko_KR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"# RHEL, CentOS\uc5d0\uc11c ntp \uc11c\ubc84 \uc124\uc815\ud558\uae30(\uc0ac\uc124\ub9dd \ub0b4\ubd80 \uc11c\ubc84\ub4e4\uc758 \uc2dc\uac04 \ub3d9\uae30\ud654) # - pigletstory \ube14\ub85c\uadf8\" \/>\n<meta property=\"og:description\" content=\"RHEL, CentOS\uc5d0\uc11c ntp \uc11c\ubc84 \uc124\uc815\ud558\uae30(\uc0ac\uc124\ub9dd \ub0b4\ubd80 \uc11c\ubc84\ub4e4\uc758 \uc2dc\uac04 \ub3d9\uae30\ud654) \uc0ac\uc124\ub9dd \ub0b4\ubd80 \uc11c\ubc84\ub4e4\uc758 \uc2dc\uac04 \ub3d9\uae30\ud654\ub97c \uc704\ud574\uc11c, ntp \uc11c\ubc84 \ub370\ubaac\uc744 \uc0ac\uc6a9\ud558\ub294 \ubc29\ubc95\uc785\ub2c8\ub2e4. \uba3c\uc800 \uc2dc\uac04\uc758 \uae30\uc900\uc774 \ub418\ub294 \uc11c\ubc84\ub97c \uc120\uc815\ud569\ub2c8\ub2e4. \uc608\ub85c \uadf8 \uc11c\ubc84\uac00 192.168.100.15 \ub77c\uace0 \ud569\ub2c8\ub2e4. \uadf8\ub9ac\uace0, \uac01 \uc11c\ubc84\ub4e4\uc774 192.168.100.x\u00a0 \ub124\ud2b8\uc6cc\ud06c\uc5d0 \uc18d\ud574\uc788\ub2e4\uace0 \uac00\uc815\ud569\ub2c8\ub2e4. \uc81c\uc77c \uc6b0\uc120\uc801\uc73c\ub85c \ubaa8\ub4e0 \uc11c\ubc84\uc5d0 ntp \ub370\ubaac\uc744 \uc124\uce58\ud558\uc5ec\uc57c \ud569\ub2c8\ub2e4. \u00a0 [root@localhost ~]# yum install ntp \u00a0 Loaded ... \ub354 \uc77d\uae30\" \/>\n<meta property=\"og:url\" content=\"https:\/\/pigletstory.co.kr\/?p=845\" \/>\n<meta property=\"og:site_name\" content=\"pigletstory \ube14\ub85c\uadf8\" \/>\n<meta property=\"article:published_time\" content=\"2018-06-26T00:56:06+00:00\" \/>\n<meta name=\"author\" content=\"woo\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\uae00\uc4f4\uc774\" \/>\n\t<meta name=\"twitter:data1\" content=\"woo\" \/>\n\t<meta name=\"twitter:label2\" content=\"\uc608\uc0c1 \ub418\ub294 \ud310\ub3c5 \uc2dc\uac04\" \/>\n\t<meta name=\"twitter:data2\" content=\"2\ubd84\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/pigletstory.co.kr\\\/?p=845#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/pigletstory.co.kr\\\/?p=845\"},\"author\":{\"name\":\"woo\",\"@id\":\"https:\\\/\\\/pigletstory.co.kr\\\/#\\\/schema\\\/person\\\/d7120640ee051cf680fd1c6a5208d620\"},\"headline\":\"# RHEL, CentOS\uc5d0\uc11c ntp \uc11c\ubc84 \uc124\uc815\ud558\uae30(\uc0ac\uc124\ub9dd \ub0b4\ubd80 \uc11c\ubc84\ub4e4\uc758 \uc2dc\uac04 \ub3d9\uae30\ud654) #\",\"datePublished\":\"2018-06-26T00:56:06+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/pigletstory.co.kr\\\/?p=845\"},\"wordCount\":456,\"commentCount\":0,\"keywords\":[\"centos ntp\",\"linux ntp\",\"ntp \uc11c\ubc84\",\"ntp\uc124\uc815\",\"rocky ntp\"],\"articleSection\":[\"Linux\"],\"inLanguage\":\"ko-KR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/pigletstory.co.kr\\\/?p=845#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/pigletstory.co.kr\\\/?p=845\",\"url\":\"https:\\\/\\\/pigletstory.co.kr\\\/?p=845\",\"name\":\"# RHEL, CentOS\uc5d0\uc11c ntp \uc11c\ubc84 \uc124\uc815\ud558\uae30(\uc0ac\uc124\ub9dd \ub0b4\ubd80 \uc11c\ubc84\ub4e4\uc758 \uc2dc\uac04 \ub3d9\uae30\ud654) # - pigletstory \ube14\ub85c\uadf8\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/pigletstory.co.kr\\\/#website\"},\"datePublished\":\"2018-06-26T00:56:06+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/pigletstory.co.kr\\\/#\\\/schema\\\/person\\\/d7120640ee051cf680fd1c6a5208d620\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/pigletstory.co.kr\\\/?p=845#breadcrumb\"},\"inLanguage\":\"ko-KR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/pigletstory.co.kr\\\/?p=845\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/pigletstory.co.kr\\\/?p=845#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/pigletstory.co.kr\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"# RHEL, CentOS\uc5d0\uc11c ntp \uc11c\ubc84 \uc124\uc815\ud558\uae30(\uc0ac\uc124\ub9dd \ub0b4\ubd80 \uc11c\ubc84\ub4e4\uc758 \uc2dc\uac04 \ub3d9\uae30\ud654) #\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/pigletstory.co.kr\\\/#website\",\"url\":\"https:\\\/\\\/pigletstory.co.kr\\\/\",\"name\":\"pigletstory \ube14\ub85c\uadf8\",\"description\":\"pigletstory\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/pigletstory.co.kr\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"ko-KR\"},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/pigletstory.co.kr\\\/#\\\/schema\\\/person\\\/d7120640ee051cf680fd1c6a5208d620\",\"name\":\"woo\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"ko-KR\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/f7d07f5222a5108393f05e78f2bac1e7acbea452123f477645ad4dc5696acc36?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/f7d07f5222a5108393f05e78f2bac1e7acbea452123f477645ad4dc5696acc36?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/f7d07f5222a5108393f05e78f2bac1e7acbea452123f477645ad4dc5696acc36?s=96&d=mm&r=g\",\"caption\":\"woo\"},\"sameAs\":[\"http:\\\/\\\/129.154.62.45\"],\"url\":\"https:\\\/\\\/pigletstory.co.kr\\\/?author=1\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"# RHEL, CentOS\uc5d0\uc11c ntp \uc11c\ubc84 \uc124\uc815\ud558\uae30(\uc0ac\uc124\ub9dd \ub0b4\ubd80 \uc11c\ubc84\ub4e4\uc758 \uc2dc\uac04 \ub3d9\uae30\ud654) # - 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