LINUX time synchronization problem:
To prevent udp reflection, 123 udp is prohibited.
Centos time synchronization:
Installation: yum install -y ntpdate
Synchronization: ntpdate 27.124.10.2
View: date
Common to other linux distributions:
Installation: apt-get install ntpdate
Synchronization: ntpdate 27.124.10.2
View: date
The synchronization time will be based on the local area