ntp gps

About NTPNTP ( networktime Protocol UTC 0.1ms In most places on the Internet its accuracy can be achieved 1-50ms . NTP The server is using NTP the protocol provides time synchronization services. NTP Server InstallationView system comes with NTP[Email protected] ~]# Rpm-qa ntpntp-4.2.6p5-5.el6.centos.x86_64If

[Excellent] NTP clock synchronization creation process The two host host1 and host2 are used for clock synchronization. host1 is the clock source, host2 is the client, OS Version: v5.1 actions on host1: 1. Edit the/etc/hosts file and add the host2 address. 2. edit/etc/NTP. CONF file, add a line peer 127.127

NTP Service time synchronizationTurn off firewalls and SELinux or turn on all firewall services[Email protected] ~]# firewall-cmd --set-default-zone=trusted NTP service[[email protected] ~]# yum–y install NTP[email protected] ~]# cat /etc/ntp. conf //Modify configuration file //define native sync time w

Work needs ah, need to transplant open source NTP to arm926 platform.(1) Now Source: http://www.ntp.org/downloads.htmlI'm under version: 4.2.8P1(2) Unzip and place it where you like.(3) Read the Readme file carefully and follow the steps it says to start compiling(4) configuration./configure, you can add some parameters, I use a script to do this process:#!/bin/bash. /configure cc=/opt/sourcery-arm-201203/bin/arm-none-linux-gnueabi-gcc cppflags=-i/hom

1. Extract the source code to /USR/LOCAL/SRCCd/usr/local/srcTar-zxvf/root/ntp-4.2.4p7.tar.gz2. View readme/instll filecdntp-4.2.4p7/Moreinstall3.generate The makefile file, specifying that it will be installed in the/USR/LOCAL/NTP directory in the future. If not specified, it is installed to the/usr/local directory by default . ./configure--help|more Viewing the parameters available at compile time./configu

Test machine: CentOS 6.5ipaddr=192.168.1.229Rqm-qa |grep NTPNot installed, first installedYum-y Intall NTPConfiguration file LocationVim/etc/ntp.confDriftfile/var/lib/ntp/drift #这个代表上层服务与本机主板时钟之间时间差别记录在这个文件里Restrict #管理权限Restrict default kod nomodify notrap nopeer noquery #拒绝IPV4用户restrict-6 default kod nomodify notrap nopeer noquery #拒绝IPV6用户The parameters are as follows:Ignore: Turn off all NTP Online Ser

1. Determine that two hosts are in the same network segment and can ping each other. (Change the server type to NTP.) To do this, follow these steps: A. Click Start, click Run, type regedit, and then click OK. B. Locate and click the following registry subkey: Hkey_local_machinesystemcurrentcontrolsetservicesw32timeparameterstype C. In the right pane, right-click Type, and then click Modify. D. Type NTP

Reprint Address: HTTP://HI.BAIDU.COM/MESSUP/ITEM/4FCB2533A1553020B2C0C5F2 Because just contact Linux, so many places do not understand. At first, there was a problem-time synchronization. So the internet search for a relevant article, and finally sorted out the idea of synchronization success, take out to share. = = This row is the following text: First of all, need to have a win system machine to do NTP server, which requires a software to prov

On the basis of the Linux system after installation--based on CentOS (5.8/6.4)--we mentioned how to automatically update the server time at timed intervals. Also mentioned, when the number of intranet machines, if all go to the public network NTP server synchronization time is there will be delay. Of course, this is not just the only meaning of deploying an NTP server. With the network scale and network ap

The installation of the NTP server on centos 5.6 requires time synchronization between some services and multiple machines in the experiment. Therefore, the prerequisites for building NTP are as follows: 1. install the ntp service yum install ntp. I *-y2, modify/etc/ntp. con

NTP synchronization server timeCurrently, the NTP service is not widely used. Recently, a DB2 cluster has some requirements on time consistency, So I thought about NTP. Although timed can also be used, it is only valid for broadcast domains, NTP is more powerful. Configuration:First, select a server as the calibratio

Tags: Internet server packet traffic For the first time since the O M, the problem of server paralysis due to attacks has been solved. All the solutions are handled by feeling the stones and crossing the river. This experience also gave me a security lesson. At ten o'clock A.M. on the 14th, all services running on the server were paralyzed, and the Internet could not be accessed and the server could not be remotely logged on. The IDC confirmed that the server Nic traffic was abnormal and the

Network Time Protocol (NTP) is a network protocol used for Packet Exchange to synchronize the clock of two computers. NTP uses UDP port 123 as the transport layer. It is used to offset the impact of variable latency. NTP is one of the oldest network protocols in use (started before January 1, 1985 ). NTP was initially

NTP Service setup under Linux(CentOS)1. installationCentOS NTP service. If you are unsure whether you have installed ntp The package can be ordered rpm – QA|GREPNBSP;NTPNBSP; check it out. If not installed, you can use the command YUMNBSP;INSTALLNBSP;NTP Install, you can also from centos Installation d

The Global Positioning System (positioning System,gps) is a medium-range circular orbiting satellite navigation system that provides accurate positioning, speed measurement and high precision time standards for the vast majority of the Earth's surface (98%). GPS is widely used in military, logistics, geography, mobile phones, digital cameras, aviation and other fields, has a very powerful function. Android

This article describes the PHP calculation of Baidu map Two GPS coordinates of the distance between the method. Share to everyone for your reference. The implementation methods are as follows: Copy Code code as follows: /** * Calculate the distance between two coordinates (m) * @param float $fP 1Lat starting point (latitude) * @param float $fP 1Lon starting point (longitude) * @param float $fP 2Lat end point (latitude) * @param floa

First you need to know the GPS coordinate system. The GPS coordinate system follows the WGS-84 standard, under which the GPS chip can emit different packet formats. The GPS data can be classified into Gpgga, Gpgsa, GPGSV, GPRMC and so on, according to the different frame-frame head of the data. These frame headers iden

GPS Debug Record: 1, access to GPS data is not complete, log information as follows: W/locationmanagerservice (392): Dropping incomplete Location:location[gps 22.563652,113.866384 acc=??? t=?!? et=+3m15s512ms alt=128.724 W/locationmanagerservice (392): Dropping incomplete Location:location[gps 22.563652,113.866384 acc=

To meet the needs of all business personnel and make full use of your ArcGIS platform resources, at the same time, it is very difficult to design a mobile solution that can be efficiently used on popular mobile device platforms. Location is very important. It may make or destroy a GIS application, depending on the plotting function you want to do. When you are thinking about a smartphone or tablet application, one of the first problems to be clarified is: How accurate is

This is a creation in Article, where the information may have evolved or changed. Disclaimer: This article only from the technical point of view to explore the game defects, any organization and individuals may not use the content of this article to engage in illegal activities, please do not spread or use the loopholes mentioned in this article, otherwise the consequences. Pokemon Go is a recent popular AR and lbs based collection to the game, the old IP called for a ticket player. The game is