I had a small project that was completely self-developed. I thought it was a very simple NTP service. I had to spend more than two hours on it (I used to work on O M and didn't pay too much attention to it, therefore, this technology is easy to use.) record here to avoid wasting time in the future.
In the target environment, five Linux centos 6.3 servers are used as the synchronization
1. "The NTP socket is on use, exiting" error appears. The reason for this is that the system NTPD server is running and can be via PS aux | grep ntpd View, if you still want to manually synchronize time, you must first stop the service, the command is:service ntpd stop or/etc/init.d/ntpd stop2. Npdate time.windows.com or ntpdate us.pool.ntp.org will be able to s
By David Davis CCIE, MCSE + I, scsa | more from David Davis CCIE, MCSE + I, scsa | published: 5/26/05Category: Home | audience: Networking Communications
Takeaway:It's critical that all devices on an organization's network display the accurate time and date. if they don't, things can go wrong in a hurry. david Davis explains why Cisco devices need to use Network Time Protocol (
server.
NTPQ-P queries the NTP server in the network and displays the current relationship between the NTP server and the superior NTP server.
[Root@c64-
Preface a time error occurred on a self-managed server, which caused a problem in the display time of mail sending, here we will take the time to record the process of building an NTP server. The Network
IOS NTP implementation to reject the association . Routers that run Cisco IOS can being unable to synchronize to an NTP server if it's a Windows system that runs the W32Time s Ervice. If the server is not a synchronized, the routers is not a able to transmit to and receive packets from the
Use NTP in CentOS7 for Time Synchronization1. NTP Clock Synchronization Methods
NTP has two clock synchronization modes in linux: Direct synchronization and smooth synchronization:Direct SynchronizationUse the ntpdate command to synchronize and directly change the time. If t
Network Time Protocol (NTP) is used to synchronize the system time of different hosts on the network. All hosts you manage can synchronize their time with a specified time server called an NTP
I. Introduction
Network Time Protocol (NTP) is used to synchronize time between the distributed time server and the client. NTP is transmitted Based on UTP packets. The UDP port used is 123.
# hwclock -systohccn.pool.ntp.org is a public NTP server located in China to synchronize your time (If your time is different from the server's time cut, you may not be able to synchronize time or even execute commands such as su
First, build preparation1. Determine your time zone#date命令可以查看当前系统时间, China's time zone is CST. To configure the time zone using the Tzselect command 650) this.width=650; "border=" 0 "src="/e/u261/themes/default/images/spacer.gif "style= " Backgroun D:url ("/e/u261/lang/zh-cn/images/localimage.png") no-repeat center;border:1px solid #ddd; "alt=" Spacer.gif "/>Co
following the previous section of Ubuntu configuration OpenStack One: Configure the host environment, continue to synchronize for installation time, and configure OpenStack's package source and install database Maridb. (The full text is done by hand-built and)First section connecting the configuration host environment http://www.cnblogs.com/skylarzhan/p/7702078.htmlOne, the installation time synchronization
1th. NTP time server Setup 1.1ntp Introduction NTP (networktime Protocol, Network Time Protocol) is a protocol that is used to synchronize the time of each computer in a network. Its purpose is to synchronize the computer clock t
Installing NTP
wget http://www.eecis.udel.edu/~ntp/ntp_spool/ntp4/ntp-4.2/ntp-4.2.6p3.tar.gz
Tar ntp-4.2.6p3.tar.gz
CD NTP-4.2.6P3
./configure--PREFIX=/USR/LOCAL/NTP--enable-all-clo
Build an NTP server in Linux
BackgroundWhen there are too many servers, it is a big problem whether the time is accurate or not. Although this problem is always ignored, it is necessary to unify the time. The following describes how to configure the Linux time
Experiment environment for configuring NTP server under RHEL6: [root@www.linuxidc.com ~] # Cat/etc/RedHat-releaseRedHatEnterpriseLinuxServerrelease6.0 (Santiago) [root@www.linuxidc.com ~] # Uname-r2.6.32-71.el6.x86_64 I. Principle of NTP service 1. Principle N
NTP server con
Target Environment,3DeskCentOS 6.6, a set asNTPDServices and external publicNTPService synchronization time, as well as the intranetNTPDservers, and other machines do time synchronization with this service. 650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/57/FC/wKioL1Sl4kbg5vAhAADo9wtkxQY205.jpg "title=" 1.jpg " alt= "Wkiol1sl4kbg5vahaado9wtkxqy205.jpg" style= "padding:0px;margin:0px;vertical-alig
CentOS NTP server installation and configuration
BackgroundWhen there are too many servers, it is a big problem whether the time is accurate or not. Although this problem is always ignored, it is necessary to unify the time. The following describes how to configure the Linux time
Linux Time synchronization Server SetupNTP(Network Time Protocol) is used to make the computerTime Synchronizationudp protocol 123 The port provides services externally, it can make the computer to its server or clock source (such as quartz clock, gps and so on to do time
To ensure consistency within the cluster, the NTP time synchronization server needs to be configured, using the China National Time Service Center clock synchronization server, p address 210.72.145.44. So each machine in the cluster is synchronized with the 210.72.145.44 clo
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