Discuss

discuss@lists.centos.org

2 participants
34758 discussions

Not Responding To TCP Connections
by hkclark＠gmail.com 07 May '06

07 May '06

I have a CentOS 3 box that appears to be having problems where a TCP SYN comes into port 80 for an Apache Tomcat web application, but the rest of the TCP "3-way handshake" isn't happening. When the error occurs, I always see this pattern in tcpdump: * A TCP SYN comes in from the client * ~3.25 second later I get another TCP SYN from the client * ~6.5 seconds after that I get a third and final SYN before the client gives up * No TCP ACKs are returned to the client to continue the 3-way handshake The box is accepting lots of connections on lots of different ports and everything else seems to be working, but I'm occassionally getting these errors on port 80 for the last few weeks (the box has been up for a while). Has anyone else run into anything similar to this? Am I correct in saying that the Linux kernel, not java and/or Tomcat, handles the TCP stack, including the 3-way handshake? If so, getting past the 3-way handshake should have nothing to do with Java or Tomcat... IOW, this issue must have something to do with the OS, right? Suggestions welcome on this strange issue! Thanks!

2 1

RE: [CentOS] bind problem
by Mike Kercher 06 May '06

06 May '06

centos-bounces(a)centos.org <> scribbled on Saturday, May 06, 2006 7:06 AM: > On Fri, 2006-05-05 at 14:01 -0500, Mike Kercher wrote: >> >>> -----Original Message----- >>> From: centos-bounces(a)centos.org >>> [mailto:centos-bounces@centos.org] On Behalf Of Adam Breaux >>> Sent: Friday, May 05, 2006 1:57 PM >>> To: CentOS mailing list >>> Subject: Re: [CentOS] bind problem >>> >>> How about updating the serial number in the zone on the > source server? >>> >> >> That's the only place I increment the serial is on the > master server. >> I shouldn't ever have to touch the zone files on the slave. >> >> Mike >> _______________________________________________ > > Are you running selinux on this box ... that can effect > change permissions. > > Also sometimes bind-chroot can cause issues if you are not > setup correctly ... though it looks like you don't have that > installed from your previous e-mails. selinux is not running on either machine, nor is bind-chroot. THe odd thing is that deleting the zone file on the slave will initiate an AXFR. I can see the notifications are received in /var/log/messages, just nothing happens after that. Mike

1 0

Yum Update Question
by John Hinton 06 May '06

06 May '06

I have asked myself over the years... just what happens during the update process? For instance, the latest updates included updates to php. I'm wondering if apache is restarted or reloaded to read the new php updates? More broadly... if this is done, is it done pretty much for every interrelated update, I guess with the exception of kernel updates? Thanks for all the hard work. Best, John Hinton

3 5

RE: [CentOS] bind problem
by Mike Kercher 06 May '06

06 May '06

> -----Original Message----- > From: centos-bounces(a)centos.org > [mailto:centos-bounces@centos.org] On Behalf Of Adam Breaux > Sent: Friday, May 05, 2006 1:57 PM > To: CentOS mailing list > Subject: Re: [CentOS] bind problem > > How about updating the serial number in the zone on the source server? > That's the only place I increment the serial is on the master server. I shouldn't ever have to touch the zone files on the slave. Mike

2 1

CentOS-announce Digest, Vol 15, Issue 3
by centos-announce-request＠centos.org 06 May '06

06 May '06

Send CentOS-announce mailing list submissions to centos-announce(a)centos.org To subscribe or unsubscribe via the World Wide Web, visit http://lists.centos.org/mailman/listinfo/centos-announce or, via email, send a message with subject or body 'help' to centos-announce-request(a)centos.org You can reach the person managing the list at centos-announce-owner(a)centos.org When replying, please edit your Subject line so it is more specific than "Re: Contents of CentOS-announce digest..." Today's Topics: 1. CESA-2006:0451 Important CentOS 4 i386 xorg-x11 - security update (Johnny Hughes) 2. CESA-2006:0451 Important CentOS 4 x86_64 xorg-x11 - security update (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Fri, 05 May 2006 15:18:32 -0500 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CESA-2006:0451 Important CentOS 4 i386 xorg-x11 - security update To: CentOS-Announce <centos-announce(a)centos.org> Message-ID: <1146860312.12421.202.camel(a)myth.home.local> Content-Type: text/plain; charset="us-ascii" CentOS Errata and Security Advisory 2006:0451 https://rhn.redhat.com/errata/RHSA-2006-0451.html The following updated files have been uploaded and are currently syncing to the mirrors: i386: xorg-x11-6.8.2-1.EL.13.25.1.i386.rpm xorg-x11-deprecated-libs-6.8.2-1.EL.13.25.1.i386.rpm xorg-x11-deprecated-libs-devel-6.8.2-1.EL.13.25.1.i386.rpm xorg-x11-devel-6.8.2-1.EL.13.25.1.i386.rpm xorg-x11-doc-6.8.2-1.EL.13.25.1.i386.rpm xorg-x11-font-utils-6.8.2-1.EL.13.25.1.i386.rpm xorg-x11-libs-6.8.2-1.EL.13.25.1.i386.rpm xorg-x11-Mesa-libGL-6.8.2-1.EL.13.25.1.i386.rpm xorg-x11-Mesa-libGLU-6.8.2-1.EL.13.25.1.i386.rpm xorg-x11-sdk-6.8.2-1.EL.13.25.1.i386.rpm xorg-x11-tools-6.8.2-1.EL.13.25.1.i386.rpm xorg-x11-twm-6.8.2-1.EL.13.25.1.i386.rpm xorg-x11-xauth-6.8.2-1.EL.13.25.1.i386.rpm xorg-x11-xdm-6.8.2-1.EL.13.25.1.i386.rpm xorg-x11-Xdmx-6.8.2-1.EL.13.25.1.i386.rpm xorg-x11-xfs-6.8.2-1.EL.13.25.1.i386.rpm xorg-x11-Xnest-6.8.2-1.EL.13.25.1.i386.rpm xorg-x11-Xvfb-6.8.2-1.EL.13.25.1.i386.rpm src: xorg-x11-6.8.2-1.EL.13.25.1.src.rpm

1 0

Anybody ever done 6 monitors on one server before? :)
by Benjamin J. Weiss 06 May '06

06 May '06

My boss wants to put together a Network Operations Center, with a network monitoring server as the centerpiece. He wants that server to have 6 monitors: 4 for network monitoring tools (rrdtool, etc) and two for running commands and the like (ping, traceroute, etc). I know that with the right video card(s) you can have two monitors, but has anybody had 6? Thanks! Ben

13 14

sempron 2500+ running at 1044 cpu speed.
by Jerry Geis 06 May '06

06 May '06

I have a desktop unit with a sempron 2500+ to play with. doing "more /proc/cpuinfo" indicates cpu Mhz as1044 not the 2500 I am familiar with cpuspeed. doing ps ax | grep cpuspeed resulting in nothing. I did service cpuspeed start. No errors reported. ps ax | grep cpuspeed resulted in nothing. I was going to do "killall -SIGUSR1 cpuspeed" to attempt to get 2500+ cpu speed. I am compiling wine right now so I havent gotten back into the BIOS. Is there another way to get the FULL cpu speed. THanks, Jerry

8 9

RE: [CentOS] bind problem
by Mike Kercher 05 May '06

05 May '06

> > > > -rw------- 1 named named 552 May 5 12:28 domain.com > > > > Mike > > I didn't know you owned it!!! I will give you $100 for your > ownership rights to domain.com > > ;-> > > -- > Robert Hanson - Abba Communications *blink* :) Mike

2 1

Anaconda Exception when installing Centos SPARC
by Henry Rodriguez 05 May '06

05 May '06

I'm installing CentOS SPARC but when i think everything goes fine and finish choosing the packages i want to install i get an ANACONDA EXCEPTION: Traceback (most recent call last): File "/usr/bin/anaconda", line 1176 in intf.run (id, dispatch, configFileData) File "/local/builder/tmp/anaconda-10.1.1.25 //usr /lib/anaconda/text.py", line 510, in run Then the installation aborts. Does somebody know what could i do?, so i can continue with the installation. Thanks. --------------------------------- Love cheap thrills? Enjoy PC-to-Phone calls to 30+ countries for just 2¢/min with Yahoo! Messenger with Voice.

1 0

RE: [CentOS] bind problem
by Mike Kercher 05 May '06

05 May '06

> >> > >> > > > > The allow-transfer is defined properly. The transfer will > work *IF* I > > delete the zone file on the secondary. I am not getting a REFUSED > > error anywhere. > > > > Mike > > > > > Are permissions on the zone files and directories proper? > Particularly the user/owner? > > John Hinton /var/named permissions are: drwxr-x--- 4 named named 8192 May 5 12:22 named All of the zone files are also owned by named.named. Permissions on a zone file are: -rw------- 1 named named 552 May 5 12:28 domain.com Mike

2 1

Jump to page:

2026

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

Discuss