chrony

説明 [#nb70c4e6]

CentOS7標準のchronyのインストール手順です。

インストール [#o62f7499]

 # yum install chrony
 # yum list installed | grep chrony
 chrony.x86_64                      1.29.1-1.el7.centos                 @base
 # cd /etc/
 # cp -p /etc/chrony.conf /etc/chrony.org
 # vim /etc/chrony.conf
 + #server 0.centos.pool.ntp.org iburst
 + #server 1.centos.pool.ntp.org iburst
 + #server 2.centos.pool.ntp.org iburst
 + #server 3.centos.pool.ntp.org iburst
 + server ntp.jst.mfeed.ad.jp iburst
 # systemctl start chronyd.service
 # systemctl status chronyd.service
 chronyd.service - NTP client/server
 Loaded: loaded (/usr/lib/systemd/system/chronyd.service; enabled)
 Active: active (running) since 火 2015-07-14 16:13:50 JST; 5s ago 

同期確認 [#l676128e]

 # chronyc sources
 210 Number of sources = 1
 MS Name/IP address         Stratum Poll Reach LastRx Last sample
 ===============================================================================
 ^* ntp3.jst.mfeed.ad.jp          2   6    77    29  -7069ns[ -103us] +/-  122ms

自動起動設定 [#z33e5088]

 # systemctl list-unit-files | grep chronyd
 chronyd.service                             disabled
 # systemctl enable chronyd.service 
 # systemctl list-unit-files | grep chronyd
 chronyd.service                             enabled