Networking :: NTPD - No Server Suitable For Synchronization Found
Mar 29, 2011
I am having a situation with an NTPD server.
Code:
remote refid st t when poll reach delay offset jitter
plesk2.datacent .INIT. 16 u - 64 0 0.000 0.000 0.000
91.198.87.118.b .INIT. 16 u - 64 0 0.000 0.000 0.000
core.fr.zeroloo .INIT. 16 u - 64 0 0.000 0.000 0.000
178-26-105-100- .INIT. 16 u - 64 0 0.000 0.000 0.000
and it remains so no matter how long I wait...
Hoping to get better results with ntpdate, I stopped NTPS and tried :
Code:
# ntpdate ntp.skynet.be
29 Mar 09:12:26 ntpdate[4715]: no server suitable for synchronization found
# ntpdate -ud ntp.skynet.be
29 Mar 09:14:02 ntpdate[4814]: ntpdate 4.2.4p4@1.1520-o Sun Nov 22 16:14:35 UTC 2009 (1)
transmit(195.13.23.5)
receive(195.13.23.5) .....
I am running Debian Lenny 64b, and every packages are totally updated. I have 25 identical servers. And there is just one giving me this problem. From what I see, it is not a connection/FW issue since ntpdate get replies from the ntp server (ntp.skynet.be is my isp's stratum 2 ntp server).
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Jan 8, 2010
I cant get ntpd to synchronize with the ntp servers. I have a CentOS 5.3 32 bit Virtual Machine. I'm in USA on Pacific Standard Time. Here's all configuration and other important information for troubleshooting. Is there anything wrong with my config? btw, I used wireshark to look at the UDP packets - I dont get any responses from any of the servers back. I only see requests going out from my server, but no response. Is this a firewall Issue? If it is, then do I need to just enable UDP port 123 on the firewall?
[Code]...
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Nov 2, 2010
I can't update my ubuntu clock with my server. If i run the command ntpdate domain.local, it gives me this erro (no server suitable for synchronization found) if i run the command nslookup domain.local it works well and found my server
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May 18, 2010
i had tried several restrict options and disabling the slackware "no serve to anyone" default. i want the slackware system to host the ntp server for other devices to sync with so im not so hard on the remote ntp servers.
Code:
# Sample /etc/ntp.conf: Configuration file for ntpd.
#
[code]....
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Jan 22, 2010
I have started ntpd service with chkconfig ntpd on .When i execute : ntpdate 0.pool.ntp.org , then i get error :
No suitable server for synchronization .
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Jun 28, 2010
I'd like to get the 13.0 "synchronized to <time server>, stratum <stratum>" messages back on 13.1.
- On 13.0, running ntpd 4.2.4p8, reassuring messages appeared in /var/log/messages like "synchronized to 211.233.84.186, stratum 2".
- On 13.1, running ntpd 4.2.6p1, there are no messages in /var/log/messages to confirm that time is being synchronised.
rc.ntpd on both starts ntpd with the same options. /etc/ntp.conf is identical on both, a "get it working and then make it secure" version:
Code:
cat /etc/ntp.conf | grep -E -v '^$|^#' cat /etc/ntp.conf | grep -E -v '^$|^#'
server in.pool.ntp.org
server asia.pool.ntp.org
server 127.127.1.0
fudge 127.127.1.0 stratum 10
driftfile /etc/ntp/drift
According to Linux Home Networking, synchronization can be checked using ntpq -p. This shows synchronization is working. I would prefer to see that confirmation in /var/log/messages without having to run a command manually to check it. How to get the old messages back?
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Apr 1, 2010
I am facing issue in ntp, it is getting killed frequently. see below error; # /etc/init.d/ntpd status ntpd dead but pid file exists After starting service it is works fine but again after sometimes it get in dead postition.
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Mar 30, 2011
My initial installation is for 10.4 (desktop). I've configured the package manager with my proxy information under the network tab. Downloads are attempted but none are successful. example error:Failed to fetch [URL]
I can download the example above via the firefox browser on the same machine configured with the same proxy.
I've tried changing servers, other hacks, but no change in results. I suspect its a proxy issue, but I don't see how. I did provide the credentials in the http authentication window that my reverse proxy requires.when I try to change servers, I get this message: No suitable download server was found
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May 27, 2010
I'm running NetWare SLES 10 sp3 with OES2 sp2. I was working with the folks at Novell to resolve an iPrint Print Manager problem.
During the process they wanted to perform a packet capture using tcpdump. While logged in as the root user the error no suitable device was found, and I received no data at all. This server is running on a VMWare Center. On other SLES 10 sp3 systems (residing on that same VMWre Center), tcpdump captures packets just fine. I inherited all of these servers, so I wasn't here during the initial build, but I'd make the guess that they were configured similarly. On a Server that I built recently, tcpdump works fine. On two of my Servers it does not, and gives the mentioned error.
It's not that big a deal, otherwise the Servers are communicating and working just fine. But, I'd like to get it working just because it's supposed to work. Students are off for the summer, so I have time to play.
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Mar 30, 2011
[root@espeed log]# /etc/init.d/ntpd start
Starting ntpd: ntpd: error while loading shared libraries: libm.so.6: cannot open shared object file: No such file or directory
[root@espeed log]# ldd /usr/sbin/ntpd
linux-gate.so.1 => (0x00786000)
libm.so.6 => /lib/libm.so.6 (0x0059d000)
[code]....
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Nov 28, 2010
I was given a computer that has the Ubuntu operating system installed I was able to at least get online with it. I tried to upgrade it (don't know what version was installed on it) using the Update Manager. When the computer restarted I got two error messages:
Error no suitable mode found
Error unknown command "terminal"
The system then went on through the Ubuntu logo screen but then I got a black screen. I couldn't get the computer to do anything. How to at least restore the computer back to its previous state before trying to upgrade.
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Dec 8, 2009
I just installed fedora12 with seLinux active and OpenOffice:
Code:
# rpm -qa | grep openoffice
openoffice.org3-base-3.1.1-9420.i586
[code]....
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May 3, 2010
Just did an upgrade from 9.10 to 10.04 through the update manager and now I can't boot into the OS. I receive these two errors:
error: no suitable mode found.
error: unknown command 'terminal'.
After these two errors. Screen flashes with the red/white loading circles and Ubuntu logo. After that just goes into a black screen.
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Jan 7, 2011
I am trying to install wine in ubuntu 8.04. While installation getting the error 'No suitable package flex found'. I tried to find out flex package in adobe as well as other sites. unable to find out.
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Mar 22, 2010
I am trying to synchronize the time of my VM server with ntpd. I have the following configuration. And in the /etc/ntp.conf, I have the following line:
restrict default ignore
restrict 127.0.0.1.
server time1.server
server time2.server
Whenever I have this line, the erver is not able to synchronize its time... So far as I understood, this line prevents other servers using this machine as a time server. And the second line says to allow localhost to use as time server. But why do I need to use its own time server when I have specified to use time1.server and time2.server ? ( firewall for tcp and udp ports 123 is open)
However, when I replace the first line of the configuration with the following line, it works. restrict default kod nomodify notrap noquery But with this, i am allowing other servers to use this server a ntp (which I wouldn't like to). Why this machine tries to use ntp server of its own (to snyc time) and why it is not working though i have the entry "restrict 127.0.0.1" ??
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Feb 10, 2011
NTPD on Fedora 14.
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Jan 21, 2010
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How do I solve this problem?
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Sep 1, 2010
ntpd startup fails during boot.Does startup just fine manually from command line once it's booted though. Any suggestions what I might adjust?
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Jun 6, 2010
What configuration options in /etc/ntp.conf do I have to set to allow other computers to receive time from a ntpd server? I've tried removing "nopeers" and "noquery" from the restrict lines, but I can't see anything on port 123.
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Mar 15, 2010
How will configure ntpd server? I tried to do it but I am used to get synchronize failed error.
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Sep 24, 2010
Time synchronization with ntp 3 mins delay from client and server
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Oct 25, 2010
I'm looking for a write one, read many file synchronization, file system or similar technique. In fact I want a to imitate a zfs_send/zfs_receive similar behaviour on Linux. My requirements are pure local (or in terms of distributed file systems: rack-aware) file handling with remote synchronization. Some random features/requirements I want to achieve are (I use the terms file and "file system" here interchangeable, as I don't care wheter I have to synchronize file based or use full file system supporting that):
Access on files from a specific host is pure local, i.e. the node has a full copy of a file, no parts are distributed. Read and write access is local, the remote side gets synchronized with write changes only Write changes on the remote side are non-blocking and asynchronous No need for concurrent file access, concurrent, distributed locking and so on Every file is changed by a single node only, other nodes have read access The file "owner", thus the node allowed to write files must be changeable Similar techniques (some as technology concept, not usable for me) exist, among those DRBD, MySQL Replication or even pure rsync.
I don't care whether I'm referring to a pure local solution (i.e. between two block devices) or a client/server mode. DRBD won't fit because its a peer to peer solution, I need to synchronize a lot of clients with a central storage through that way where DRBD just mirrors from peer to peer among two nodes and doesn't allow another node to take over the role of the primary node (i.e. node A is master, storage B secondary, I want to change to a thrid node C which becomes master and receives hence a full update from storage B.
Just as a guess, I'd make a local LVM volume on every node where write access happens. In the same time there exists a iSCSI target with multipath to a remote hosts which is shared with every node, again providing a clustered LVM. So I'd need to synchronize a local LVM volume with a remote LVM image. The question is just by which technique I could achieve that (i.e. as RAID 0, where every read and write goes to one node only and doesn't wait the other node to succeed). I could achieve this with rsync by a cyclic push to the remote host, but the problem is, that rsync isn't block based thus I'd need to synchronize every time the whole file, not only changes.
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Mar 14, 2011
I work on Linux Regression testing and I am writing a script to automate(shell scripting) the netperf tool when I need to determine the performance(throughput) of agent and client(individually) and I shall be running a shell script on (lets say) client first. But how to obtain the synchronization between them both as I need to execute a command even in board(agent) side to get the script going.
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Jan 21, 2011
I am running a centOS 5.5 server and can't synchronize with time servers via ntpd. My server sits behind a firewall with only port 80 open and I suspect this is the issue. Do I need to open other ports to connect to the time servers at [URL]?
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Apr 12, 2010
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The mail server would get connected to my online mail server from where it would fetch up emails and keep it here something like what mdaemon does in windows. And also send emails from this machine using smtp and pop3. How to do this kind of config and the best mail server
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Mar 7, 2010
I have been trying to learn iSCSI from google but there is one main point that remains unclear. Is iSCSI suitable to move data between IP of [URL] and IP of [URL] rather than between 192.168.xxx.xxx and 192.168.xxx.xxy?
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Jun 26, 2011
one thing I'm not quite certain about is suitable limit rates for SYN, LOG & ping flood prevention. I suppose it depends a bit on traffic, as well as bandwidth. However, I don't want to limit the former. FWIW, I expect about as much traffic as a country road in the middle of nowhere, and my bandwidth for requests is 15 Mbps (Don't laugh. Content delivery is a pathetic 2 Mbps. That's a residential cable connection for ya...)Of all the tutorials/examples, I chose to go with Rusty Russel's limits, though they're dated 2002. Thus an excerpt of my firewall "script":
Code:
#!/bin/sh
# Saved in /etc/init.d, runlevels 2 3 4 5
[code]...
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Jun 29, 2010
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Jul 14, 2011
I have a set of machines on a disconnected network. Periodically, one of the machines connects to the internet and synchronizes its time with a time server that is not known until the connection is established. (The machine queries a central command server for the address of the time server it should synchronize to.)
I then use a custom tool to do some calculations to call adjtimex() and adjust the clock so that it runs fairly accurately.
I know ntpd is supposed to be able to handle disconnected networks but I thought you had to preconfigure the servers in the configuration file.
My intent is to run ntpd on this machine (without configured "server"s) so that it can serve time to the internal network. (Periodic synchronization using ntpdate from the internal machine to the bridge machine.)
The problem: ntpd wants to fuss with the values I set using adjtimex(). I want it to quit thinking it needs to adjust the clock and just serve time to the internal network. (Maybe I have a GPS time source hooked directly to the machine!)
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Apr 3, 2010
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