Linux Learning Log day2 part0--building NTP service for time management

Simple hands-on operation

The machine's system time synchronization is very important, otherwise it may be a big deal.

Realize:

Yum-y Install NTP

Put NTP services on each machine

Vim/etc/ntp.conf

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Use # to comment out the system default server, add a custom server

Server hostname/Domain iburst

Note the iburst at the end

The host synchronizes with the asia.pool.ntp.org, and the other machines synchronize with the host, so that the time of each machine is synchronized.

Systemctl start Ntpdsystemctl Enable NTPD

Done

NOTES: Several commands about the time

Timedatectl

View time Details

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Universal Time (UTC): International Unified Clock

RTC Time: Realtime clock. Specifies a hardware clock, typically a special circuit on the motherboard, dedicated for recording time, battery-powered, not affected by the server's turn off, the operating system is turned off

Tzselect

Modify Time zone

Ntpq-p

ntpq-p Querying the NTP server in the network while showing the relationship between the client and each server

This article is from the "Cry" blog, please be sure to keep this source http://antistand.blog.51cto.com/12146661/1861182

Linux Learning Log day2 part0--building NTP service for time management