1、简单介绍

2、服务安装

2.1、安装服务

apt install chrony

2.2、参数配置

sed -i  's@server@#server@g' /etc/chrony.conf

echo -e  "server ntpupdate.tencentyun.com iburst" >> /etc/chrony.conf

# Use public servers from the pool.ntp.org project.

# Please consider joining the pool (http://www.pool.ntp.org/join.html).

# servers

server ntpupdate.tencentyun.com 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 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

# Specify directory for log files.

logdir /var/log/chrony

# Select which information is logged.

#log measurements statistics tracking

3、开始同步

3.1、设置时区

timedatectl set-timezone Asia/Shanghai

3.2、开启ntp同步

timedatectl set-ntp yes

3.3、开始同步

systemctl restart chrony

chronyc sources

root@l:/data/liu/git/zgj_toutiao# systemctl restart chrony

root@l:/data/liu/git/zgj_toutiao# chronyc sources

210 Number of sources = 5

MS Name/IP address         Stratum Poll Reach LastRx Last sample              

===============================================================================

^? 169.254.0.79                  2   6     1     2    -26us<span class="token punctuation">[  -26us<span class="token punctuation">] +/-   22ms

^? 169.254.0.80                  2   6     1     1  +1309ns<span class="token punctuation">[+1309ns<span class="token punctuation">] +/-   26ms

^? 169.254.0.81                  2   6     1     1   -103us<span class="token punctuation">[ -103us<span class="token punctuation">] +/-   28ms

^? 169.254.0.82                  2   6     1     1    +62us<span class="token punctuation">[  +62us<span class="token punctuation">] +/-   39ms

^? 169.254.0.83                  2   6     1     1   -356us<span class="token punctuation">[ -356us<span class="token punctuation">] +/-   37ms