基于Chrony时间同步
服务端
安装chrony
yum install -y chrony启动服务并且加入开机自启
systemctl enable chronyd.service && systemctl restart chronyd.service && systemctl status chronyd.service编辑配置文件
vim /etr/chrony.conf# Use public servers from the pool.ntp.org project.
# Please consider joining the pool (http://www.pool.ntp.org/join.html).
#pool 2.rocky.pool.ntp.org iburst
server 176.0.250.31 iburst
# Record the rate at which the system clock gains/losses time.
driftfile /var/lib/chrony/drift
# Allow the system clock to be stepped in the first three updates
# if its offset is larger than 1 second.
makestep 1.0 3
# Enable kernel synchronization of the real-time clock (RTC).
rtcsync
# Enable hardware timestamping on all interfaces that support it.
#hwtimestamp *
# Increase the minimum number of selectable sources required to adjust
# the system clock.
#minsources 2
# Allow NTP client access from local network.
allow 176.0.0.0/16
allow 192.168.10.0/24
allow 10.10.100.0/24
allow 63.0.0.0/16
#qhtest
allow 72.0.0.251
# Serve time even if not synchronized to a time source.
local stratum 10
# Specify file containing keys for NTP authentication.
keyfile /etc/chrony.keys
# Get TAI-UTC offset and leap seconds from the system tz database.
leapsectz right/UTC
# Specify directory for log files.
logdir /var/log/chrony
# Select which information is logged.
#log measurements statistics tracking设置系统时区
timedatectl set-timezone Asia/Shanghai重启服务
systemctl restart chronyd.service强制同步时钟
chronyc -a makestep客户端
安装chrony
yum install -y chrony启动服务并且加入开机自启
systemctl enable chronyd.service && systemctl restart chronyd.service && systemctl status chronyd.service编辑配置文件
vim /etr/chrony.conf# Use public servers from the pool.ntp.org project.
# Please consider joining the pool (http://www.pool.ntp.org/join.html).
#pool 2.rocky.pool.ntp.org iburst
server 176.0.250.1 iburst
server 176.0.250.2 iburst
# Record the rate at which the system clock gains/losses time.
driftfile /var/lib/chrony/drift
# Allow the system clock to be stepped in the first three updates
# if its offset is larger than 1 second.
makestep 1.0 30000
# Enable kernel synchronization of the real-time clock (RTC).
rtcsync
# Enable hardware timestamping on all interfaces that support it.
#hwtimestamp *
# Increase the minimum number of selectable sources required to adjust
# the system clock.
#minsources 2
# Allow NTP client access from local network.
#allow 192.168.0.0/16
# Serve time even if not synchronized to a time source.
#local stratum 10
# Specify file containing keys for NTP authentication.
keyfile /etc/chrony.keys
# Get TAI-UTC offset and leap seconds from the system tz database.
leapsectz right/UTC
# Specify directory for log files.
logdir /var/log/chrony
# Select which information is logged.
#log measurements statistics tracking重启服务
systemctl restart chronyd.service启用NTP时间同步
timedatectl set-ntp yes常用命令
查看时间同步源
chronyc sources -v查看时间同步源状态
chronyc sourcestats -v校准时间服务器
chronyc tracking查看硬件时间
hwclock将硬件时间设置成和软件时间一样的
hwclock --systohc