玄箱HGメモ / Debian / NTP導入

玄箱HGメモ/Debian/NTP導入

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Debian NTP導入 †

NTPクライアントを導入します。

NTP導入 †

管理者権限(管理者アカウント参照)で作業する必要があります。

KAGUYA:~# aptitude install ntp[ENTER]

NTP導入画面(例)

Reading Package Lists... Done
Building Dependency Tree
Reading extended state information
Initializing package states... Done
Reading task descriptions... Done
The following NEW packages will be automatically installed:
  libreadline5 readline-common
The following packages have been kept back:
  adduser apt apt-utils aptitude base-files base-passwd bash bsdmainutils
  bsdutils console-common console-data console-tools cpio cron debconf
  debconf-i18n debianutils dhcp-client dpkg dselect e2fslibs e2fsprogs
  fileutils findutils ftp gcc-3.3-base gettext-base grep groff-base gzip
  hostname ifupdown info initscripts iptables klogd libacl1 libattr1
  libblkid1 libcomerr2 libconsole libdb1-compat libdb3 libdb4.2 libgcc1
  libgdbm3 libldap2 liblocale-gettext-perl liblockfile1 liblzo1
  libpam-modules libpam-runtime libpam0g libpcre3 libpopt0 libsasl2 libss2
  libstdc++2.10-glibc2.2 libstdc++5 libtext-charwidth-perl
  libtext-iconv-perl libtext-wrapi18n-perl libuuid1 libwrap0 login
  logrotate make makedev man-db manpages modconf modutils mount nano
  ncurses-base ncurses-bin net-tools netbase netkit-ping nvi passwd
  pciutils perl perl-base perl-modules powerpc-utils procps psmisc sed
  shellutils sysklogd sysv-rc sysvinit tar tasksel tcpd telnetd textutils
  util-linux whiptail yaboot zlib1g
The following NEW packages will be installed:
  libreadline5 ntp readline-common
0 packages upgraded, 3 newly installed, 0 to remove and 102 not upgraded.
Need to get 542kB of archives. After unpacking 1462kB will be used.
Do you want to continue? [Y/n/?] 

Y[ENTER]

Writing extended state information... Done
Get:1 ftp://ftp.dti.ad.jp stable/main readline-common 5.2-2 [50.6kB]
Get:2 ftp://ftp.dti.ad.jp stable/main libreadline5 5.2-2 [133kB]
Get:3 ftp://ftp.dti.ad.jp stable/main ntp 1:4.2.2.p4+dfsg-2 [358kB]
Fetched 542kB in 4s (121kB/s)
Selecting previously deselected package readline-common.
(Reading database ... 9250 files and directories currently installed.)
Unpacking readline-common (from .../readline-common_5.2-2_all.deb) ...
Replacing files in old package libreadline4 ...
Selecting previously deselected package libreadline5.
Unpacking libreadline5 (from .../libreadline5_5.2-2_powerpc.deb) ...
Selecting previously deselected package ntp.
Unpacking ntp (from .../ntp_1%3a4.2.2.p4+dfsg-2_powerpc.deb) ...
Setting up readline-common (5.2-2) ...

Setting up libreadline5 (5.2-2) ...

Setting up ntp (4.2.2.p4+dfsg-2) ...
Starting NTP server: ntpd.

Reading Package Lists... Done
Building Dependency Tree
Reading extended state information
Initializing package states... Done
Reading task descriptions... Done
KAGUYA:~#

玄箱/HGをリブートします。

NTP設定 †

途中で設定画面が出なかったのでNTPサーバーの設定をします。

NTPサーバーとしてserver ntp.nict.jpとserver ntp.nasa.govを追加してみます。
追加するNTPサーバーはお好みでどうぞ。

元のファイルはとりあえず残しておきます。
KAGUYA:~# cp -p /etc/ntp.conf /etc/ntp.conf._org[ENTER]

KAGUYA:~# vi /etc/ntp.conf[ENTER]

/etc/ntp.confの例

# /etc/ntp.conf, configuration for ntpd

driftfile /var/lib/ntp/ntp.drift
statsdir /var/log/ntpstats/

statistics loopstats peerstats clockstats
filegen loopstats file loopstats type day enable
filegen peerstats file peerstats type day enable
filegen clockstats file clockstats type day enable

# You do need to talk to an NTP server or two (or three).
#server ntp.your-provider.example

以下の2行を追加

server ntp.nict.jp
server ntp.nasa.gov

# pool.ntp.org maps to more than 300 low-stratum NTP servers.
# Your server will pick a different set every time it starts up.
#  *** Please consider joining the pool! ***
#  *** <http://www.pool.ntp.org/join.html> ***
server 0.debian.pool.ntp.org iburst
server 1.debian.pool.ntp.org iburst
server 2.debian.pool.ntp.org iburst
server 3.debian.pool.ntp.org iburst

# By default, exchange time with everybody, but don't allow configuration.
# See /usr/share/doc/ntp-doc/html/accopt.html for details.
restrict -4 default kod notrap nomodify nopeer noquery
restrict -6 default kod notrap nomodify nopeer noquery

# Local users may interrogate the ntp server more closely.
restrict 127.0.0.1
restrict ::1

# Clients from this (example!) subnet have unlimited access,
# but only if cryptographically authenticated
#restrict 192.168.123.0  mask  255.255.255.0 notrust

# If you want to provide time to your local subnet, change the next line.
# (Again, the address is an example only.)
#broadcast 192.168.123.255

# If you want to listen to time broadcasts on your local subnet,
# de-comment the next lines. Please do this only if you trust everybody
# on the network!
#disable auth
#broadcastclient

設定を有効にするために面倒なので玄箱/HGをリブートします。

NTP確認 †

設定の確認をします。
管理者権限(管理者アカウント参照)で作業する必要があります。

KAGUYA:~# ntpq -p[ENTER]

NTP設定確認画面(例)

      remote           refid      st t when poll reach   delay   offset  jitter
 ==============================================================================
 *ntp-b3.nict.go. .NICT.           1 u   34   64  377   34.625  -82.813  15.662
 +ntp-nasa.arc.na .GPS.            1 u   35   64  377  152.041  -83.593  14.923
  211.19.56.138   133.243.238.164  2 u   25   64  277   39.956  -81.657  16.139
 +ntp.kiba.net    3.245.216.189    2 u   35   64  377   29.947  -99.371  25.926
 +sylph.white-voi 150.26.2.66      2 u   33   64  377   37.266  -87.793  17.399
KAGUYA:~#

追加したNTPサーバーっぽい文字列(nictとnasa)が出ているので良しということで。

作業終了です。
以降の作業を行わない場合は管理者アカウント終了してtelnet切断します。

コメント †