ntp appliance

NTP-based multi-server time synchronization script The server updates the time every hour. The synchronization server of the server synchronizes the time every five seconds. The synchronization server does not interact with the Internet, and the synchronization time is performed by the server. Therefore, ensure that the time of each synchronization server is consistent. # Vi ud_ntp.sh #! /Bin/bashTime = 5Ip (){Echo "192.168.48.114"Echo "192.168.28.233

Time synchronization is achieved through the NTP service.1: First build local Yum source URL (http://www.cnblogs.com/zj21/p/6223462.html)2: First install NTP service[email protected] ~]# Yum install ntp-y3: Modify the NTP configuration file# For more information on this file, see the "the Man pages"# ntp.conf (5), NTP_

1: Experimental environmentPrerequisites: Virtual machine environment, Windows client, shutdown firewall, linux Server shut down firewall, turn off SELinux.Cent OS:NTP Server ip:192.168.80.134/255.255.255.0Windows 7: Client ip:192.168.80.133/255.255.255.02:NTP Service Installation① generally comes with:1 grep NTP 2 ntp-4.2. 6p5-1. el6.centos.x86_643 fontpackages-

1, the installation of NTP service, to use time synchronization, then the server and the client need to use the following command to install the NTP package[Email protected]5201351yuminstall ntp-y2, if only as a client, the configuration can be very simple, edit the/etc/ntp.conf file, comment out the default of the following default 4 lines together with our time

The computer's system time is generated by a fixed oscillation frequency in the quartz crystal oscillator circuit in the computer.Date View current time zoneVim/etc/sysconfig/clock Modifying the time zone configuration fileZone= "America/new_york"#改为Zone= "Asia/shanghai"cover/etc/localtimecp-a/usr/share/zoneinfo/asia/shanghai/etc/localtimeCp:overwrite '/etc/localtime '? YDate 111317402016 Modify system timeHwclock-w synchronizing system time to hardware timeRpm-qa |grep

The time for all nodes must be synchronized, which is usually achieved by configuring the NTP server. If the user already has a time server in the network, then all nodes can point to it, otherwise you can pick a node from the cluster as the time server and let the other nodes synchronize with it. These two methods are shown below:(1) If a time server is already in the corporate networkExample: 192.168.11.10 is an

Tags: Linux NTP linux system NTP service1, installationNTPyum-y Install NTP (Direct Yum installation can be)2 , Modify The configuration of the ntp.conf1 ) vim/etc/ntp.conf① Configuration method One: only allow The client of the 192.168.100.0 network segment to synchronize timein the restrict default Kod nomodify notrap nopeer noquery (indicates default deny

Linux uses NTP service to manage/Synchronize server time When there are multiple Web servers, and each server's time needs to be consistent, consider using NTP services. 1. Use Ntpstat to see the current status of the NTP service. #ntpstat If the output below, the description has not started, you need to set the server restart when the

' test.ping10.77.23.24:trueMaster-Side Directory Description:tree/srv/salt/# #master base directory/srv/salt/├──dev├── ntp #ntp服务目录 │├──conf #ntp服务各种配置文件存放目录 ││ ├──ntp.conf││├──ntpd││ └──step-tickers│└──init.sls #ntp服务安装的state文件 └──top.sls# Portal File 3directories,5files cattop.slsbase: ' * ':-ntp.initcatinit.sls #Na

NTP server configuration 1. NTP service Introduction NTP (network time Protocol) is a network Protocol used to synchronize computer clocks. It can synchronize time between computers and other servers or clock sources. The time server verifies the time in three ways with other time servers (1) Broadcast/Multicast this method is suitable for LAN, with low accuracy

Article Title: system time synchronization and ntp service provision. Linux is a technology channel of the IT lab in China. Some basic classification computers, such as desktop applications, Linux system management, kernel research, embedded systems, and open-source systems, will experience errors soon if they are left blank. This error is reflected in the time stamp of the email sending time, and in the posting time of your forum post. At least I hav

When the server is more, time is accurate or not, the same is a big problem. Although this problem is always overlooked, it is necessary to unify the time. Here's how to configure a Linux time server within a LAN.Configuration of the environment and requirements:Assume that in the 192.168.0.0 network segment, a Linux machine time server with IP 192.168.0.101 is needed.192.168.0.101 Server can Sisu network, can be synchronized with the more authoritative public network time serverAutomatically sy

Time synchronization in a cluster can cause big data applications to run into confusion, causing unpredictable problems, such as HBase, which hangs when time differences are too large, so in a big data cluster, the NTP service should serve as a basic service, as shown below in the CentOS 7.2 Procedures for configuring NTP services on ClustersFirst check if the NTP