CentOS7 使用chrony搭建集群中的时间同步服务

一、集群环境:

  系统:CentOS7-minimal

  集群中的两台主机ip:10.132.226.103/24  10.132.226.104/24

二、CentOS7中时间相关命令timedatectl例子介绍:

  1.查看主机中的时间信息:timedatectl

1 [root@controller ~]# timedatectl
2       Local time: Tue 2018-07-24 00:27:53 CST
3   Universal time: Mon 2018-07-23 16:27:53 UTC
4         RTC time: Tue 2018-07-24 00:27:53
5        Time zone: Asia/Shanghai (CST, +0800)
6      NTP enabled: yes
7 NTP synchronized: yes         //NTP时间同步开启
8  RTC in local TZ: yes
9       DST active: n/a

  2.查看可获取的时区:timedatectl list-timezones

1 [root@controller ~]# timedatectl list-timezones
2 Africa/Abidjan
3 Africa/Accra
4 Africa/Addis_Ababa
5 ........

  3.设置本地时区:timedatectl set-timezone Asia/Shanghai

1 # timedatectl set-timezone Asia/Shanghai

  4.设置时间日期等:

1 [root@controller ~]# timedatectl set-time "2018-07-19 18:08:08"
2 [root@controller ~]# timedatectl set-time "2018-07-19"
3 [root@controller ~]# timedatectl set-time "18:08:08"

  5.将硬件时钟设置为本地时区:

1 [root@controller ~]# timedatectl set-local-rtc 1

  6.将硬件时钟设置为协调世界时(UTC):

[root@controller ~]# timedatectl set-local-rtc 0

 三、安装配置chrony

  1.主节点安装:

1 [root@controller ~]# yum install -y chrony

 

    2.主节点配置:编辑 /etc/chrony.conf文件

[root@controller ~]# vim /etc/chrony.conf

# Use public servers from the pool.ntp.org project.
# Please consider joining the pool (http://www.pool.ntp.org/join.html).
#以下0.centos.pool.ntp.org等为远程时间同步服务器可自行更改
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  
#~~~~~~~~~~~省略若干~~~~~~~~#
# Allow NTP client access from local network.
#allow 192.168.0.0/16
#修改!!!
#此处添加子节点的IP
allow 10.132.226.104/24
#~~~~~~~~~~~省略若干~~~~~~~~#

  3.主节点重启NTP服务

1 [root@controller ~]# systemctl enable chronyd.service
2 [root@controller ~]# systemctl start chronyd.service

  4.子节点安装:

1 [root@compute1 ~]# yum install -y chrony

  5.子节点配置:编辑 /etc/chrony.conf文件

 1 [root@compute1 etc]# vim /etc/chrony.conf
 2 
 3 # Use public servers from the pool.ntp.org project.
 4 # Please consider joining the pool (http://www.pool.ntp.org/join.html).
 5 #修改 把其他远程同步节点全部注释,并添加主节点ip或者hosts
 6 #server 0.centos.pool.ntp.org iburst
 7 #server 1.centos.pool.ntp.org iburst
 8 #server 2.centos.pool.ntp.org iburst
 9 #server 3.centos.pool.ntp.org iburst
10 server controller iburst

四、验证同步服务是否搭建成功:

  1.使用命令 chronyc sources

1 [root@compute1 etc]# chronyc sources
2 210 Number of sources = 1
3 MS Name/IP address         Stratum Poll Reach LastRx Last sample               
4 ===============================================================================
5 ^* controller                    3   6   377    22  -5232us[-6125us] +/-   47ms

    注意:如果controller前为^? 可能是主节点防火墙开启,导致子节点无法进行时间同步。

  可以也可以通过timedatectl命令查看:

1 [root@compute1 etc]# timedatectl
2       Local time: Mon 2018-07-23 23:41:49 CST
3   Universal time: Mon 2018-07-23 15:41:49 UTC
4         RTC time: Mon 2018-07-23 23:41:49
5        Time zone: Asia/Shanghai (CST, +0800)
6      NTP enabled: yes
7 NTP synchronized: yes           //此处如果为no说明NTP时钟为开启
8  RTC in local TZ: yes
9       DST active: n/a

  解决方法:关闭主节点防火墙

 

 

 

 

posted @ 2018-07-24 01:04  这个昵称得改  阅读(1895)  评论(0编辑  收藏  举报