NTPによる時刻同期
rc.confに設定追加
/etc/defaults/rc.conf から、設定ファイルをコピーする。
# grep ntpd_ /etc/defaults/rc.conf >> /etc/rc.conf
ntpd_conf="NO"をYESに変更。
# vi /etc/rc.conf ntpd_enable="YES" # Run ntpd Network Time Protocol (or NO). ntpd_program="/usr/sbin/ntpd" # path to ntpd, if you want a different one. ntpd_config="/etc/ntp.conf" # ntpd(8) configuration file ntpd_sync_on_start="NO" # Sync time on ntpd startup, even if offset is high ntpd_flags="-p /var/run/ntpd.pid -f /var/db/ntpd.drift"
/etc/ntp.confを作成
# vi /etc/ntp.conf server 210.173.160.27 # ntp1.jst.mfeed.ad.jp server 210.173.160.57 # ntp2.jst.mfeed.ad.jp server 210.173.160.87 # ntp3.jst.mfeed.ad.jp
ntpdateコマンドで同期
# ntpdate 210.173.160.27
ntpd起動
# /etc/rc.d/ntpd start Starting ntpd.
同期確認
# ntpq -p
同期中
remote refid st t when poll reach delay offset jitter ============================================================================== ntp1.jst.mfeed. 210.173.160.56 2 u 7 64 3 18.523 -9.362 0.171 ntp2.jst.mfeed. 210.173.160.56 2 u 7 64 3 18.486 -9.268 1.219 ntp3.jst.mfeed. 210.173.160.86 2 u 5 64 3 19.010 -9.754 0.704
同期完了(左端に*が付けば完了)
remote refid st t when poll reach delay offset jitter ============================================================================== *ntp1.jst.mfeed. 210.173.176.251 2 u 196 256 17 17.467 -16.066 1.981 +ntp2.jst.mfeed. 210.173.160.86 2 u 195 256 17 17.337 -14.714 2.458 +ntp3.jst.mfeed. 210.173.160.56 2 u 194 256 17 16.943 -16.279 2.428
