[Galaxy Kirin V10] [server] set time synchronization of intranet server

Method 1：ntp The way

step 1： Server configuration

# yum  install  -y  ntp ntpdate

# vim /etc/ntpd.conf  

# systemctl restart ntpd

step 2： Client configuration

# yum  install  -y  ntp ntpdate

If there is firewall configuration, it needs to be opened udp 123 port

# firewall-cmd --permanent --add-port=123/udp

# firewall-cmd --reload

# vim /etc/ntpd.conf   // The original server Field comments and add the following configuration

# systemctl restart ntpd

# ntpq  -p    // View synchronization status , At the front * The sign indicates that the synchronization was successful , If there is no need to wait

Method 2：chrony The way

Server configuration ：

# yum install chrony  -y   //sp2 The server comes with

# vim  /etc/chrony.conf

If there is firewall configuration, it needs to be opened udp 123 port

# firewall-cmd --permanent --add-port=123/udp

# firewall-cmd --reload

Client configuration ：

# yum install chrony  -y   //sp2 The server comes with

# vim  /etc/chrony.conf

# systemctl restart chronyd

# chronyc  sources  -v     // View synchronization status , front ^* The beginning indicates that the synchronization is normal

 

The way 3：crond+ntpdate The way

In a way 2 After configuration , Clients can also use timed tasks , Specify synchronization period

# ntpdate  192.168.1.150   // Manual sync

# vim /etc/crontab   // Join a scheduled task

*/10 * * * * /usr/sbin/ntpdate  192.168.1.21 && hwclock -w