got a centos5.2 web/database server thats on a public coloc, its dmesg fills up with TCP: Treason uncloaked! Peer 82.135.195.32:64905/8032 shrinks window 354477433:354478918. Repaired. TCP: Treason uncloaked! Peer 82.135.195.32:64905/8032 shrinks window 354477433:354478918. Repaired. TCP: Treason uncloaked! Peer 82.135.195.32:64905/8032 shrinks window 354477433:354478918. Repaired. TCP: Treason uncloaked! Peer 84.158.80.177:61931/8032 shrinks window 3243223020:3243237180. Repaired. TCP: Treason uncloaked! Peer 84.158.80.177:61931/8032 shrinks window 3243227520:3243237180. Repaired. TCP: Treason uncloaked! Peer 84.158.80.177:61931/8032 shrinks window 3243232020:3243237180. Repaired. I know thats because of random bogosity coming in from the internet, and I really don't care. can I suppress that from filling up the dmesg buffer so I can see more important things like scsi soft errors?
On Thu, 25 Sep 2008 02:15:01 -0700 John R Pierce <pierce at hogranch.com> wrote:> I know thats because of random bogosity coming in from the internet, and > I really don't care. can I suppress that from filling up the dmesg > buffer so I can see more important things like scsi soft errors?Block the ip addresses where it's coming from with iptables or something. -- MELVILLE THEATRE ~ Melville Sask ~ http://www.melvilletheatre.com DRY CLEANER BUSINESS FOR SALE ~ http://www.canadadrycleanerforsale.com
on 9-25-2008 2:15 AM John R Pierce spake the following:> got a centos5.2 web/database server thats on a public coloc, its dmesg > fills up with > > > TCP: Treason uncloaked! Peer 82.135.195.32:64905/8032 shrinks window > 354477433:354478918. Repaired. > TCP: Treason uncloaked! Peer 82.135.195.32:64905/8032 shrinks window > 354477433:354478918. Repaired. > TCP: Treason uncloaked! Peer 82.135.195.32:64905/8032 shrinks window > 354477433:354478918. Repaired. > TCP: Treason uncloaked! Peer 84.158.80.177:61931/8032 shrinks window > 3243223020:3243237180. Repaired. > TCP: Treason uncloaked! Peer 84.158.80.177:61931/8032 shrinks window > 3243227520:3243237180. Repaired. > TCP: Treason uncloaked! Peer 84.158.80.177:61931/8032 shrinks window > 3243232020:3243237180. Repaired. > > I know thats because of random bogosity coming in from the internet, and > I really don't care. can I suppress that from filling up the dmesg > buffer so I can see more important things like scsi soft errors?Don't you love some of the more "interesting" messages from the kernel? I'm surprised they didn't use "Here be dragons"! -- MailScanner is like deodorant... You hope everybody uses it, and you notice quickly if they don't!!!! -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 250 bytes Desc: OpenPGP digital signature URL: <http://lists.centos.org/pipermail/centos/attachments/20080925/fb66d3dc/attachment-0001.sig>
On Thu, 25 Sep 2008 11:22:24 -0700 Scott Silva <ssilva at sgvwater.com> wrote:> Don't you love some of the more "interesting" messages from the kernel?While amusing, if you read up a bit on what the error message is actually telling you, you will find that it really is a pretty good short-form description of the issue. -- MELVILLE THEATRE ~ Melville Sask ~ http://www.melvilletheatre.com DRY CLEANER BUSINESS FOR SALE ~ http://www.canadadrycleanerforsale.com
On Thu, Sep 25, 2008 at 5:15 AM, John R Pierce <pierce at hogranch.com> wrote:> got a centos5.2 web/database server thats on a public coloc, its dmesg fills > up with > > > TCP: Treason uncloaked! Peer 82.135.195.32:64905/8032 shrinks window > 354477433:354478918. Repaired. > TCP: Treason uncloaked! Peer 82.135.195.32:64905/8032 shrinks window > 354477433:354478918. Repaired. > TCP: Treason uncloaked! Peer 82.135.195.32:64905/8032 shrinks window > 354477433:354478918. Repaired. > TCP: Treason uncloaked! Peer 84.158.80.177:61931/8032 shrinks window > 3243223020:3243237180. Repaired. > TCP: Treason uncloaked! Peer 84.158.80.177:61931/8032 shrinks window > 3243227520:3243237180. Repaired. > TCP: Treason uncloaked! Peer 84.158.80.177:61931/8032 shrinks window > 3243232020:3243237180. Repaired. > > I know thats because of random bogosity coming in from the internet, and I > really don't care. can I suppress that from filling up the dmesg buffer so > I can see more important things like scsi soft errors?You can filter these messages to their own log when using rsyslog and its regex features. I'm not sure how much performance impact you'd take from it, but unless you're a really high-traffic site, it should be just fine. -- During times of universal deceit, telling the truth becomes a revolutionary act. George Orwell
John R Pierce wrote:> > got a centos5.2 web/database server thats on a public coloc, its dmesg > fills up with > > > TCP: Treason uncloaked! Peer 82.135.195.32:64905/8032 shrinks window > 354477433:354478918. Repaired. > TCP: Treason uncloaked! Peer 82.135.195.32:64905/8032 shrinks window > 354477433:354478918. Repaired. > TCP: Treason uncloaked! Peer 82.135.195.32:64905/8032 shrinks window > 354477433:354478918. Repaired. > TCP: Treason uncloaked! Peer 84.158.80.177:61931/8032 shrinks window > 3243223020:3243237180. Repaired. > TCP: Treason uncloaked! Peer 84.158.80.177:61931/8032 shrinks window > 3243227520:3243237180. Repaired. > TCP: Treason uncloaked! Peer 84.158.80.177:61931/8032 shrinks window > 3243232020:3243237180. Repaired. > > I know thats because of random bogosity coming in from the internet, and > I really don't care. can I suppress that from filling up the dmesg > buffer so I can see more important things like scsi soft errors?You could try turning TCP window scaling off which should stop that part of the stack from executing. How much it will affect the network performance of your box depends on the clients connecting to it... -Ross ______________________________________________________________________ This e-mail, and any attachments thereto, is intended only for use by the addressee(s) named herein and may contain legally privileged and/or confidential information. If you are not the intended recipient of this e-mail, you are hereby notified that any dissemination, distribution or copying of this e-mail, and any attachments thereto, is strictly prohibited. If you have received this e-mail in error, please immediately notify the sender and permanently delete the original and any copy or printout thereof.
Scott Silva wrote:> on 9-25-2008 2:15 AM John R Pierce spake the following: >> got a centos5.2 web/database server thats on a public coloc, its >> dmesg fills up with >> >> >> TCP: Treason uncloaked! Peer 82.135.195.32:64905/8032 shrinks window >> 354477433:354478918. Repaired. >> TCP: Treason uncloaked! Peer 82.135.195.32:64905/8032 shrinks window >> 354477433:354478918. Repaired. >> TCP: Treason uncloaked! Peer 82.135.195.32:64905/8032 shrinks window >> 354477433:354478918. Repaired. >> TCP: Treason uncloaked! Peer 84.158.80.177:61931/8032 shrinks window >> 3243223020:3243237180. Repaired. >> TCP: Treason uncloaked! Peer 84.158.80.177:61931/8032 shrinks window >> 3243227520:3243237180. Repaired. >> TCP: Treason uncloaked! Peer 84.158.80.177:61931/8032 shrinks window >> 3243232020:3243237180. Repaired. >> >> I know thats because of random bogosity coming in from the internet, >> and I really don't care. can I suppress that from filling up the >> dmesg buffer so I can see more important things like scsi soft errors? > Don't you love some of the more "interesting" messages from the kernel? > > I'm surprised they didn't use "Here be dragons"!Or revive "Don't worry, Max; everything's gonna be O.K."