linux ntp client

noquery noserve#restrict-6 default kod nomodify notrap nopeer noquery noserve#restrict 127.0.0.1#restrict cn.pool.ntp.org kod nomodify notrap nopeer noquery#restrict 0.cn.pool.ntp.org kod nomodify notrap nopeer noquery#restrict 192.168.0.0 Mask 255.255.255.0 notrap nomodify#server cn.pool.ntp.org prefer #指定网络上的NTP server#server 0.cn.pool.ntp.org #指定网络上的NTP Server#还可以通过上面的设置只对192.168.0.0/24 This network seg

Client#broadcast 224.0.1.1 AutoKey # Multicast Server#multicastclient 224.0.1.1 # Multicast Client#manycastserver 239.255.254.254 # Manycast Server#manycastclient 239.255.254.254 AutoKey # manycast Client# undisciplined Local Clock. This was a fake driver intended for backup# and when no outside source of synchronized time is available.Server 127.127.1.0 # Local

#broadcast 192.168.1.255 AutoKey # broadcast Server#broadcastclient # broadcast Client#broadcast 224.0.1.1 autokey # multicast Server#multicastclient 224.0.1.1 # multicast Client#manycastserver 239.255.254.254 # manycast server#manycastclient 239.255.254.254 Auto Key # Manycast client# Enable Public key cryptography. #cryptoincludefile/etc/

Article Title: Considerations for NTP service configuration in Linux. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. In the standard configuration of

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 synchronization, it can provide high accuracy time correction (lan is less than the standard difference between 1 milliseconds, wan on dozens of milliseconds), and can be ref

use the UTC clock configuration file/etc/localtime the time profile on the local side, the timezone specified in the clock will be/usr/share/zoneinfo/Copy the time profile in the/etc/localtimeCommon directives:/bin/date for the modification and display of Linux software time/sbin/hwclock is used to modify and display the BIOS time, usually after modifying the system time with date, and then using Hwclock to synchronize to the BIOS./usr/sbin/ntpdate

Iburst #注释掉默认的ntp服务器#server 2.centos.pool.ntp.org Iburst#server 3.centos.pool.ntp.org Iburst#broadcast 192.168.1.255 AutoKey # Broadcast Server#broadcastclient # Broadcast Client#broadcast 224.0.1.1 AutoKey # Multicast Server#multicastclient 224.0.1.1 # Multicast Client#manycastserver 239.255.254.254 # Manycast Server#manycastclient 239.255.254.254 AutoKey # man

Linux NTP service configuration for Oracle RAC tutorial, ntprac When installing Oracle 11g RAC, We need to configure the ntp service. There are many ways to configure the clock synchronization mode when using virtual machines. You can use the clock synchronization feature provided by vmware or directly use a local node as the time server. This article describes

:11:24 ntpdate[3619]: Step time server 192.168.157.142 offset 54910.952135 sec[[Email protected] ~]# DateWed Mar 15:11:32 CST 2015The Ntpstat command indicates the state of the connection between the native and upper-level servers650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/5B/75/wKiom1UJMTXAfChkAACItkaspBg523.jpg "style=" float: none; "Title=" Captures 2. PNG "alt=" Wkiom1ujmtxafchkaacitkaspbg523.jpg "/>The ntpq-p command shows the status of the time synchronization in detail650)

to the font, not the ntp package [Oracle @ node1 ~] $ Ssh node 2 rpm-qa | grep ntp Ntp-4.2.2p1-9.el5_4.1 Chkfontpath-1.10.1-1.1 # This is related to the font, not the ntp package 3. Edit the ntp. conf file of the two nodes. [Oracle @ node1 ~] $ Su-root Password: [Root @ no

One, NTP server (ip:192.168.1.101) Installation: Yum install-y NTP Firewall allowed: iptables-a input-i $EXTIF-P udp-s 192.168.1.0/24--dport 123-j ACCEPT Configuration: vim/etc/ntp.confRestrict 192.168.1.0 mask 255.255.255.0 nomodify notrapServer before # Remove Start:/ETC/INIT.D/NTPD startChkconfig ntpd on Observation: Ntpq-p or Ntpstat Second,

NTP server is used for LAN time synchronization. You can ensure that all servers in the LAN are synchronized with the time server. Some applications require a higher time-to-live nature. Requirements must be unified time, so the configuration of the time server is important.The internet has a lot of time servers. For example, there is a free NTP server with Fudan University: Ntpdate ntp.fudan.edu.cn. Nanjin

For server operations, we need to pay special attention to several issues1, for the e-commerce platform, the first is the time problem, so we first want the server time of the regular synchronizationNTP Server Build- upNTP ( Network Time Protocol Time Network protocol)currently used by NTP almost all of them . NTPv3 by RFC1305 Document Descriptionsecond-level accuracy SNTP ( Simple Network Time protocol ) by RFC2030 DescriptionNTP belongs to the Appli

Configure NTP time synchronization on Linux with a break operation step, sorted as follows: 1. Install packages (on server and client): The code is as follows Copy Code Yum Install NTP 2. Server-side configurationFor example:First, the server IP address is set to: 192.168.146.110

NTP upgrade, upgrade Redhat is very smooth, after the upgrade will default overwrite the original file, restart the service, use NTPD--version to view the verification, can upgrade SuSE Linux but found errors frequently, the following is my upgrade encountered some problems, After the summary hope to have and I met the same mistake of the parents can be used as a reference:I. Due to the vulnerability of

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

the NTP server on the update time.(PS: The above contents refer to the Baidu Encyclopedia)installation of an NTP server:1 Installing NTP:[email protected] ~]# yum install-y ntp[[email protected] ~]# ntpdate time.nist.gov2 NTP server configuration:(1) Modify the ntp.conf con

Linux NTP server-side configuration:1) Setting the/etc/ntp.conf configuration file[Email protected] etc]# vi/etc/ntp.conf# For more information on this file, see the "the Man pages"# ntp.conf (5), NTP_ACC (5), Ntp_auth (5), Ntp_clock (5), Ntp_misc (5), Ntp_mon (5).Driftfile/var/lib/ntp/drift# Permit time synchronization with We time source, but does not# permit t

, non-NTP package [Oracle@node1 ~]$ ssh node2 Rpm-qa | grep NTP ntp-4.2.2p1-9.el5_4.1 chkfontpath-1.10.1-1.1 #这个是和字体有关, non-NTP package 3, edit the two-node ntp.conf file [Oracle@node1 ~]$ Su-root Password: [Root@node1 ~]# vi/etc/ntp.conf #New NTP server added by Rob

=/usr--bindir=/usr/sbin--sysconfdir=/etc--enable-linuxcaps-- With-lineeditlibs=readline--docdir=/usr/share/doc/ntp-4.2.8p9--enable-all-clocks--enable-parse-clocks-- Enable-clockctl make make install[Email protected] ~]# ntpntpd ntpdate ntpdc ntp-keygen ntpq ntptime ntptrace ntp-wait4. Create a configuration file[Email protected] ~]# cp/etc/init.d/ntpd.bak/etc/