ubuntu同步Centos7的chrony
设置了2台ubuntu18-server同步Centos7的chrony,记录,备查。
Centos7服务端
1. $yum -y install chrony
2. $systemctl start chronyd
3. $systemctl enable chronyd
4. $cat /etc/chrony.conf #修改配置文件
# Use public servers from the pool.ntp.org project.
# Please consider joining the pool (http://www.pool.ntp.org/join.html).
#server 0.centos.pool.ntp.org iburst //用#号注释原来的源
#server 1.centos.pool.ntp.org iburst //用#号注释原来的源
#server 2.centos.pool.ntp.org iburst //用#号注释原来的源
#server 3.centos.pool.ntp.org iburst //用#号注释原来的源,共4行
server ntp.aliyun.com iburst //添加新的NTP时间源,iburst参数可以实现立即同步
server ntp.fudan.edu.cn iburst
# Allow NTP client access from local network.
allow 20.0.46.0/24 //允许20.0.46.0网段的客户端请求同步本机的时间
5. 开启网络时间同步:timedatectl set-ntp true
6. 查看NTP是否已经启用:$ timedatectl
Local time: 二 2021-01-05 11:44:03 CST
Universal time: 二 2021-01-05 03:44:03 UTC
RTC time: 二 2021-01-05 03:44:03
Time zone: Asia/Shanghai (CST, +0800)
NTP enabled: yes //这里显示yes,代表NTP已启用
NTP synchronized: yes
RTC in local TZ: no
DST active: n/a
7. 查看chrony设置开机自启是否成功:
$ sudo systemctl is-enabled chronyd
enabled //这里已经启用
Ubuntu客户端
1. $ sudo atp-get install chrony
2. $ cat /etc/chrony/chrony.conf
# Welcome to the chrony configuration file. See chrony.conf(5) for more
# See http://www.pool.ntp.org/join.html for more information.
#pool ntp.ubuntu.com iburst maxsources 4
#pool 0.ubuntu.pool.ntp.org iburst maxsources 1
#pool 1.ubuntu.pool.ntp.org iburst maxsources 1
#pool 2.ubuntu.pool.ntp.org iburst maxsources 2
server 20.0.46.24 iburst //向Centos服务器请求同步时间
3. $ sudo service chronyd status
4. $ sudo service chronyd start
5. $ sudo timedatectl set-ntp ture/yes
6. $ sudo timedatectl //查看开启状态
Local time: Tue 2021-01-05 11:55:23 CST
Universal time: Tue 2021-01-05 03:55:23 UTC
RTC time: Tue 2021-01-05 03:55:23
Time zone: Asia/Shanghai (CST, +0800)
System clock synchronized: yes
systemd-timesyncd.service active: yes
RTC in local TZ: no
7. 查看chrony设置开机自启是否成功:
$ sudo systemctl is-enabled chronyd
enabled //这里已经启用
其它用法:
1.查看 ntp_servers:chronyc sources -v
2.查看 ntp_servers 状态:chronyc sourcestats -v
3.查看 ntp_servers 是否在线:chronyc activity -v
4.查看 ntp 详细信息:chronyc tracking -v
结束。