|Top|NTPサーバの設定（サーバの時刻同期）
”自宅サーバ”の時間を正確に合わせる為”NTPサーバ”を構築し NET上のNTPサーバ（タイムサーバ）と同期させます！
まずは・・・お約束のInstall！
# apt-get install ntp
次は設定ファイルを記述します！
# vi /etc/ntp.conf
私の場合は全ての行をコメントアウト後下記のみ有効にしました！
オリジナルをバックアップして新規で作成したほうが良いかも・・・(^_^;)
# Prohibit general access to this service.
#restrict default ignore
# Permit all access over the loopback interface.
This could
# be tightened as well, but to do so would
effect some of
# the administrative functions.
#restrict 127.0.0.1
# -- CLIENT NETWORK -------
# Permit systems on this network to synchronize
with this
# time service. Do not permit those systems
to modify the
# configuration of this service. Also, do
not use those
# systems as peers for synchronization.
# restrict 192.168.1.0 mask 255.255.255.0
notrust nomodify notrap
# --- OUR TIMESERVERS -----
# or remove the default restrict line
# Permit time synchronization with our time
source, but do not
# permit the source to query or modify the
service on this system.
# restrict mytrustedtimeserverip mask 255.255.255.255
nomodify notrap noquery
# server mytrustedtimeserverip
# --- NTP MULTICASTCLIENT ---
#multicastclient # listen on default 224.0.1.1
# restrict 224.0.1.1 mask 255.255.255.255
notrust nomodify notrap
# restrict 192.168.1.0 mask 255.255.255.0
notrust nomodify notrap
# --- GENERAL CONFIGURATION ---
#
# Undisciplined Local Clock. This is a fake
driver intended for backup
# and when no outside source of synchronized
time is available. The
# default stratum is usually 3, but in this
case we elect to use stratum
# 0. Since the server line does not have
the prefer keyword, this driver
# is never used for synchronization, unless
no other other
# synchronization source is available. In
case the local host is
# controlled by some external source, such
as an external oscillator or
# another protocol, the prefer keyword would
cause the local host to
# disregard all other synchronization sources,
unless the kernel
# modifications are in use and declare an
unsynchronized condition.
#
#server 127.127.1.0 # local clock
#fudge 127.127.1.0 stratum 10
#
# Drift file. Put this in a directory which
the daemon can write to.
# No symbolic links allowed, either, since
the daemon updates the file
# by creating a temporary in the same directory
and then rename()'ing
# it to the file.
#
server 133.100.9.2 ※ここから5行追加
server 133.41.4.2
server 133.31.30.8
driftfile /var/lib/ntp/drift
broadcastdelay 0.008
#
# Authentication delay. If you use, or plan
to use someday, the
# authentication facility you should make
the programs in the auth_stuff
# directory and figure out what this number
should be on your machine.
#
authenticate yes
#
# Keys file. If you want to diddle your server
at run time, make a
# keys file (mode 600 for sure) and define
the key number to be
# used for making requests.
#
# 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.
#
#keys /etc/ntp/keys
"自宅サーバ”の時間が大幅にずれていると同期できない為合わせておきます！
# ntpdate 133.100.9.2
1 Aug 12:23:29 ntpdate[10355]: adjust time
server 133.100.9.2 offset -0.001048sec
自動起動するように設定します！
lqqqqqqqqqu ツールを選択 tqqqqqqqqqk
x Authentication configuration
x Firewall configuration
x Mouse configuration
x Network configuration
x System services ※システムサービスを選択
x lqqqqqqqqqqqqk lqqqqqqk
x 実行ツール x x 停止 x
x mqqqqqqqqqqqqj mqqqqqqj
mqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqj
lqqqqqqqqqqqqqqqqqqu サービス tqqqqqqqqqqqqqqqqqqqk
x 自動的に起動させるサービスを指定してください。
x
x [ ] netfs
x [*] network
x [ ] nfs
x [ ] nfslock
x [ ] nscd
x [*] ntpd ※ntpdを選択
x [ ] pcmcia
x [ ] portmap
x lqqqqk lqqqqqqqqqqk
x OK x x 取り消し x
x mqqqqj mqqqqqqqqqqj
mqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqj
再起動します！
#reboot
再起動後10分ぐらい？後に時刻同期しているか確認します！
# ntpq -p
remote refid st t when poll reach delay offset
jitter
==============================================================================
*clock.nc.fukuok .GPS. 1 u 255 1024 367 33.142
-0.608 0.912 ※いずれかの行頭に＊がつけば同期しています！
+ns.hiroshima-u. z.djp.jp 3 u 264 1024 377
27.352 0.170 3.486
+sutns.sut.ac.jp sutntp.sut.ac.j 2 u 283
1024 377 12.902 0.671 0.199