chrony

• CentOS7 からの標準 NTP デーモン

• 設定ファイル

  • /etc/chrony.conf

• 動作確認状況

  # chronyc sources
  210 Number of sources = 4
  MS Name/IP address         Stratum Poll Reach LastRx Last sample
  ===============================================================================
  ^- v157-7-152-213.z1d1.stati     2   6   177    26  +1114us[+1114us] +/-   28ms
  ^- time.platformnine.com         3   9   377   370  +1090us[+1479us] +/-   79ms
  ^- x.ns.gin.ntt.net              2   9   377   142  +3367us[+3367us] +/-   77ms
  ^* 60-56-214-78f2.kns1.eonet     1  10   377   308  +1275us[+1668us] +/- 6210us
  

• システムクロックのパフォーマンス表示

  # chronyc tracking
  Reference ID    : CBB28749 (hit-bridge.com)
  Stratum         : 3
  Ref time (UTC)  : Mon Dec 31 07:56:17 2018
  System time     : 0.000001603 seconds fast of NTP time
  Last offset     : +0.000156628 seconds
  RMS offset      : 0.001750106 seconds
  Frequency       : 0.522 ppm fast
  Residual freq   : +0.064 ppm
  Skew            : 5.581 ppm
  Root delay      : 0.011160635 seconds
  Root dispersion : 0.020527933 seconds
  Update interval : 0.7 seconds
  Leap status     : Normal