Edit the configuration file for Linux NTP installation and configuration service

Linux NTP is a commonly used software for computer gamers. Then I will study and study Linux NTP in depth. Here I will discuss with you how to use Linux NTP, hoping to help you. About Time Service

/Etc/Linux NTP. conf System-config-date Network Time Protocol (Linux NTP, Network Time Protocol) is used to synchronize all of its client clock services. The Linux NTP server synchronizes the clock of the local system with a public Linux NTP server and then serves as a time host so that all clients on the local network can synchronize the clock.

The biggest benefit of clock synchronization is the data in the log files on the relevant system. If you use the central log host to centrally manage logs in the network, the log results will better reflect the real situation. In a network that synchronizes the clock, the centralized performance monitoring and service monitoring systems can reflect system information in real time, and the system administrator can quickly detect and solve system errors.

Install and configure the Linux NTP service

The following describes the simple configuration of the Linux NTP server: Generally, the Linux release will contain the Linux NTP package. If your system is not installed, run the rpm command to install the package, the following uses the fedora core 6 system as an example to configure a time server:

 
 

  
  
[root@supersun.biz root]# rpm -ivh Linux NTP-4.2.2p1-3.i386.rpm   
  
  
warning: Linux NTP-4.2.2p1-3.i386.rpm: V3 DSA signature: NOKEY, key ID db42a60e  
  
  
Preparing... ########################################### [100%]  
  
  
1:Linux NTP ########################################### [100%] 
 
 

Edit the configuration file/etc/Linux NTP. conf

 
 

  
  
restrict default nomodify notrap noquery  
  
  
restrict 127.0.0.1   
  
  
restrict 192.168.1.0 mask 255.255.255.0 nomodify notrap  
  
  
restrict 192.168.0.0 mask 255.255.255.0 nomodify notrap  
  
  
server 0.asia.pool.Linux NTP.org  
  
  
server 1.asia.pool.Linux NTP.org  
  
  
server 2.asia.pool.Linux NTP.org  
  
  
server 3.asia.pool.Linux NTP.org  
  
  
server 127.127.1.0  
  
  
fudge 127.127.1.0 stratum 10 
 
 

The ITALIC part is the part I added. It sets the Intranet address of the two network segments of the time server and the external time server. Now we will give a brief explanation of the configuration: the first line of restrict, default defines the default access rules, nomodify prohibits remote hosts from modifying the local server configuration, notrap rejects special Linux NTPdq To Capture messages, noquery rejects the btodq/Linux NTPdc query. The query here is the server status query ).

The last two lines of the configuration file are used to provide the time service for the client at the local time when the server is out of contact with the public time server. Port Linux NTP uses udp protocol. Remember to open port 123.

Start Linux NTPD

Start the Linux NTPd daemon: configure the service Linux NTPd start client to run periodic tasks as root: [root @ supersun root] # crontab-e

Add the following content and update the time every 15 minutes: */15 ***** Linux NTPdate Linux NTP. supersun. the Linux NTPdate command in biz is included in the Linux NTP package. Check whether the system is installed.

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