Linux NTP

1.Server　　2.QuickStart　　　　　　　　　　last

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1.Server

0.cn.pool.ntp.org
1.cn.pool.ntp.org
2.cn.pool.ntp.org
3.cn.pool.ntp.org

2.QuickStart

• 简单配置

  # Permit time synchronization with our time source, but do not
  # permit the source to query or modify the service on this system.
  restrict default nomodify notrap nopeer noquery
  
  # 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 ::1
  
  # Hosts on local network are less restricted.
  #restrict 192.168.1.0 mask 255.255.255.0 nomodify notrap
  
  restrict 172.16.36.0 mask 255.255.255.0 nomodify notrap
  restrict 192.168.0.0 mask 255.255.255.0 nomodify notrap
  
  # Use public servers from the pool.ntp.org project.
  # Please consider joining the pool (http://www.pool.ntp.org/join.html).
  server 0.cn.pool.ntp.org iburst
  server 1.cn.pool.ntp.org iburst
  server 2.cn.pool.ntp.org iburst
  server 3.cn.pool.ntp.org iburst

Demo

•  

• vmware 学习用虚拟机

  #虚拟机经常时间不准确
  #用户登录就自动调整时间
  vi .bashrc
  ntpdate 0.cn.pool.ntp.org > /dev/null &

NTP .