ntp time server appliance

Linux server time verification 1. View server time drift [root @ localhost ~] # Ntpdate-d pool. ntp. org3 Jun 12:23:02 ntpdate [23209]: ntpdate 4.2.2p1@1.1570-o Thu Jan 22 02:50:41 UTC 2009 (1) Looking for host pool.ntp.org and service ntphost found: round (114.80.81.13) rec

Centos7 time synchronization server It's a bit difficult today. Because of inconsistent server time, many log logs are missing during data synchronization. So. Let's talk about the time server first. Start: Method 1: simple, ef

Encounter a situation, that is, the time between multiple servers is not synchronous, and some are fast slow, this time will need to use the network,Log on to the server, enter the command date can query the server time, need to synchronize the

1. When you execute this command, ntpdate us.pool.ntp.org has an error message. Name Server cannot be used: temporary failure in name resolution 2. solution (add DNS server) VI/etc/resolv. conf Add: nameserver 8.8.4.4 3. Common NTP server addresses and IP addresses in China 2011-09-07 15:06:08210.72.145.44 (IP add

1. Select one of the servers as the benchmark server, which provides the clock service. (1) First determine if NTP exists, and if it does not exist, install it by using the following command: Yum Install NTP (2) Modify the configuration file/etc/ntp.conf in which to insert: Restrict 192.168.20.0 mask 255.255.255.0 nomodify notrap which With restrict control autho

CentOS server cluster automatic synchronization time Method There was a log that was a http://blog.csdn.net/bhq2010/article/details/8543946 for manual synchronization time This is because only a part of the LAN in our lab can access the internet. The IP address used by the server cannot access the Internet and cannot

Let me introduce the relevant tutorials The following commands need to be executed with root permission, or you will be prompted for insufficient permissions First determine if the server has ntpdate this software: Which ntpdate if not found, you will need to install a ntpdate. Use this command under Redhat, CentOS: The code is as follows Copy Code Yum Install-y NTP

Generally a slightly larger project will be deployed to several servers to do the cluster, the same application may be deployed to several servers, while the processing business must keep different servers on the same time, which requires time synchronization between servers. My approach is to:1, select one of the external network open server, with the root user

Because NTP often times out, so I wrote a simple time synchronization server, the client will synchronize the service side of the system time:Service side:#!/usr/local/python27/bin/python#coding:utf-8importtimeimportloggingimportsocketserverimport structfromdaemonizeimportDaemonizeSERVER_HOST= ' 0.0.0.0 ' server_port= 37123BUF_SIZE=1024pid= '/tmp/timeserver.pid '

-3.020089 Secondshint:somelineswereellipsized,uSe-ltoshowinfull. Do the following configuration as a time server:[[email protected] ~]# VIM/ETC/CHRONY.CONF25 # allow NTP Client access from local network.26 allow 192.168.231.0/2427 28 # Serve Time even if not synchronized to a time