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Tags: exiting execute command not and the technology share port syncerror message:Error reason analysis:Because the XNTPD is already bound to the Socket. When you run Ntpdate, it broadcasts first, and then listens on port 123.If XNTPD is running and a process is already listening on that port, it will cause ntpdate to fail to run on it. Run the following command to find the PID of the XNTPDSolution:Appears:
services to users on the Internet or in the LAN.
Okay, I 've talked about a lot of theories. Now let's practice it. It's actually very simple to set up an NTP Relay Server. Let's first package the required RPM
You can use this command to determine whether the NTP package has been installed:
[Root @ NTPser ~] # Rpm-qa
server. Note: Before you work, back up the Registry file.
1. Enter the regedit command in the Start menu and open the registry settings screen. At this time, make sure to back up the Registry file.
2. Modify the key values of the following options
HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Services \ W32Time \ TimeProviders \
Enabled in NtpServer is set
The local clock in the Xen Linux machine is by default (done) synchronized with the physical host clock, in order to change the time it uses the Sync Service for NTP, the kernel parameters must be set by the virtual machine:Shell CodeEcho 1 >/proc/sys/xen/independent_wallclock
The/etc/sysctl.conf configuration file in the virtual machine adds the following two a
This article mainly records the usual accumulation of things about NTP.In order to connect to the NTP server, the device must be connected to the network, setting a different method, Conlio here.
There are many NTP servers, but some are not. The test is 202.120.2.101, which is the Network Center NTP
is a group of NTP server clusters with six servers located at Shanghai Telecom. This service is the second free API service for API. BZ following the free SMS sending interface of http://sms.api.bz mobile mail.
Client settings:
1. the Linux server can use the ntpdate command to synchronize with the
synchronization will decrease correspondingly.Reach: This is a octal value that is used to test the connection to the server and increases the value of each successful connection.Offset: This is the most critical value, which tells us the time difference between the local machine and the server. The closer the offset is to 0, the closer we are to the server.Jitt
is actually very simple, we'll pack the rpm we need.If you have already installed an NTP package, you can use this command to determine:[Email protected] ~]# Rpm-qa | grep NTPntp-4.2.2p1-9.el5_4.1chkfontpath-1.10.1-1.1The above code indicates that an NTP package has been installed, otherwise it is installed in the following way:Code:# RPM-IVH
: * 11484/ntpd
After the restart, you have to wait a few minutes or ten minutes to synchronize time,
# Ntpdate 192.168.8.100
11 Aug 11:38:30 ntpdate [7619]: adjust time server 10.17.1.60 offset 0.000178 sec
If the test is performed immediately after the restart, the following occurs:
# Ntpdate 192.168.8.100
11 Aug 11:05:28 ntpdate [1, 7326]: no
1th Chapter ntp1.1 NTP IntroductionNTP, 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 to the World coordinated UTC, its accuracy in the LAN up to 0.1ms, in most places on the Internet its accuracy can reach 1-50ms.1.2 N
The Java code gets the NTP server time, And the java code gets the ntp
The apache commons-net package contains ntp-related implementation classes, including:
1
org.apache.commons.net.ntp.NTPUDPClient
?
1
org.apache.commons.net.ntp.TimeInfo
point the server to the master node.Server 192.168.6.3= = = Modified before = == = = Modified after = = =Node 1 (192.168.6.3):Node 2 (192.168.6.4):Node 3 (192.168.6.5):(iii) Start the NTP service, view status 1) Start the NTP service"Command" service ntpd start2) CheckSee if the N
recently, found that the company domain member user time and the domain server time is not synchronized, to achieve: 1, the domain member server and intra-domain client and domain NTP server synchronization, 2, the domain
read out by the BIOS and the BIOS is the important time basisNTP server time synchronization with the upper-level time server, so the default NTP server can not use Ntpdate, that is, n
TimeSync for VMware Tools, the virtual machine will, in some cases, and its host go to sync time, as described configure times synchronization Between Guest and Host Operating Systems. The time of this esxi virtual machine is wrong, because ESXi time is wrong. –_-| | The author runs the following
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.
based on the host time.3) solves the transfer delay during NTP server Calibration TimeUse the driftfile parameter settings:Driftfile file nameThe time spent in contacting the upper-level time server is recorded in the file after
for NTP Client1 , through the Web client log in to Vcenter server, Press to configure650) this.width=650; "title=" 10.png "src=" https://s2.51cto.com/wyfs02/M00/90/6B/wKiom1jwbF_ Wrpidaadcaa76gko598.png-wh_500x0-wm_3-wmp_4-s_1967122696.png "alt=" wkiom1jwbf_wrpidaadcaa76gko598.png-wh_50 "/ >2 , enable ESXi command Line650) this.width=650; "title=" 11.png
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