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DoS Attack
by John Hinton 14 Oct '05

14 Oct '05

Yesterday, I had a DoS attack on a php/mysql webpage which uses a lot of resources. I have learned today, as a for instance, in the last hour, about 3000 requests for that page were made by 610 different servers, mostly from 'odd' places... China, Russia, Poland, Turkey... the usual suspects from my experience. The bottom line is this... I hit server loads of 142 yesterday!!! And the server never crashed! Yeah, it might as well have been dead, but it wasn't. Yes, some things shut down temporarily... but the machine never went down. This is a remote server, about an hour away.. It took about 20 minutes for my mysqld stop command to execute, but with time it did respond! I'm extremely impressed by this and just wanted to pass this 'trivia' along. EL rocks! Best, John Hinton

4 7

rpmbuild a kernel module
by Craig White 14 Oct '05

14 Oct '05

We've been down this path before and I got things working but am not self-sufficient which is where I would like to be. Problem is new kernel 2.6.9-22 and I need 2 modules installed that aren't part of the RHEL kernels. 1 - megaraid for older non-supported megaraid cards. I have the source and can compile the modules and make them work no problem. We have archives in the mail list for that. 2 - appletalk - previously, it was suggested that I get the module from esmith which I did and it has worked fine but they have yet to update to the new kernel (which they will undoubtedly do). So I have the source for their 2.6.9-11 appletalk kernel module but I am not knowledgeable enough to make this work... # rpmbuild --rebuild /root/kernel-module- appletalk-0.0.1-2_2.6.9_11.EL.src.rpm Installing /root/kernel-module-appletalk-0.0.1-2_2.6.9_11.EL.src.rpm warning: user slords does not exist - using root warning: group slords does not exist - using root error: line 20: Tag takes single token only: Release: 2_package kernel_sourcecode is not installed (do I have to boot to 2.6.9-22 first?) and I'm thinking that if it were possible to isolate the appletalk code, I could simply make the module as I do with megaraid but I can't figure out where it's kept or if it can be isolated... # ls -l /usr/src/kernels/2.6.9-11.EL-i686/ total 336 drwxr-xr-x 24 root root 4096 Aug 22 14:01 arch drwxr-xr-x 4 root root 4096 Aug 22 14:01 crypto drwxr-xr-x 45 root root 4096 Aug 22 14:01 drivers drwxr-xr-x 54 root root 4096 Aug 22 14:01 fs drwxr-xr-x 15 root root 4096 Aug 22 14:01 include drwxr-xr-x 2 root root 4096 Aug 22 14:01 init drwxr-xr-x 2 root root 4096 Aug 22 14:01 ipc drwxr-xr-x 3 root root 4096 Aug 22 14:01 kernel drwxr-xr-x 4 root root 4096 Aug 22 14:01 lib -rw-r--r-- 1 root root 42211 Jun 8 15:41 Makefile drwxr-xr-x 2 root root 4096 Aug 22 14:01 mm -rw-r--r-- 1 root root 162245 Jun 8 15:41 Module.symvers drwxr-xr-x 33 root root 4096 Aug 22 14:01 net drwxr-xr-x 10 root root 4096 Aug 22 14:01 scripts drwxr-xr-x 3 root root 4096 Aug 22 14:01 security drwxr-xr-x 15 root root 4096 Aug 22 14:01 sound drwxr-xr-x 2 root root 4096 Aug 22 14:01 usr If there is someone who can direct me to either rebuild the src rpm for the kernel-appletalk module or isolate the source code so I can simply make the module, I would appreciate it. Thanks Craig -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.

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Way to hide the mouse on X or move it off screen - solved
by Jerry Geis 13 Oct '05

13 Oct '05

I found the unclutter package for mandrake. works nice. All, I am looking for a command to hide the mouse on X or move it to the side of the screen. Is there such a command? THanks Jerry

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Newbie Questions
by Benjamin Smith 13 Oct '05

13 Oct '05

Recent convert from WhiteBox, a few questions What is the difference between CentOS 4.2 and "4"? Is this like the Whitebox "respin"? Are updates/packages for 4.2 applicable across all the "4" series of releases? -Ben -- "The best way to predict the future is to invent it." - XEROX PARC slogan, circa 1978

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Way to hide the mouse on X or move it off screen
by Jerry Geis 13 Oct '05

13 Oct '05

All, I am looking for a command to hide the mouse on X or move it to the side of the screen. Is there such a command? THanks Jerry

1 0

SRPMS for kernel with centos 4.2
by Jerry Geis 13 Oct '05

13 Oct '05

Where can I download the source for the kernel? http://mirrors.jtlnet.com/centos/4.2/os/i386/ I dont see it in the above mirror? THanks,

3 2

RE: [CentOS] CentOS-4.2 is Released for i386, x86_64, ia64, s390, s390x and alpha architectures
by Colht, Charles 13 Oct '05

13 Oct '05

Will PPC support follow? Specifically P5? Thanks for the hard work. -----Original Message----- From: centos-bounces(a)centos.org [mailto:centos-bounces@centos.org] On Behalf Of Johnny Hughes Sent: Thursday, October 13, 2005 4:15 AM To: CentOS-Announce Cc: CentOS ML Subject: [CentOS] CentOS-4.2 is Released for i386, x86_64, ia64, s390,s390x and alpha architectures The CentOS development team is pleased to announce the availability of CentOS-4.2 in the following architectures: i386 - This distribution supports AMD (K6, K7, Thunderbird, Athlon, Athlon XP, Sempron), Pentium (Classic, Pro, II, III, 4, Celeron, M, Xeon), VIA (C3, Eden, Luke, C7) processors. x86_64 - This distribution supports AMD (Athlon 64, Opteron) and Intel Pentium (Xeon EM64T) processors. ia64 - This distribution supports Intel Itanium2 processors. s390 - This distribution supports IBM S/390 processors. s390x - This distribution supports IBM Z-Series servers. alpha - This distribution supports the DEC Alpha processor. There may be a separate release announcement for individual architectures. -------------------------------------------------------------------- Current CentOS 4 users may upgrade by using up2date or yum and the normal upgrade process using the following commands: yum upgrade or up2date -u -------------------------------------------------------------------- The CentOS specific release notes for this upgrade are available here: http://mirror.centos.org/centos/4/os/i386/RELEASE-NOTES-en.html Documentation for CentOS 4 (including upstream release notes) is available here: http://mirror.centos.org/centos/4/docs/ You may download the installation CD or DVD ISOs via bittorrent from this link: http://mirror.centos.org/centos/4/isos/ CD ISOs may also be downloaded via publicly available external mirrors: http://www.centos.org/mirrors/ -------------------------------------------------------------------- Major changes in this version of CentOS include: 1. Upgraded yum. Yum has been upgraded to version 2.4.x, which adds a sqlite database backend for local metadata storage. This allows yum updates to be much faster than they were previously. The following packages are added or upgraded to facilitate the new yum: createrepo, centos-yumconf, sqlite, sqlite-devel, python-elementtree, python-sqlite, python-urlgrabber, yum. 2. SystemTap. CentOS-4.2 contains a technology preview release of SystemTap. SystemTap is a dynamic system profiling framework. SystemTap is only included as a preview, and should not be used in production at this time. Please see the SystemTap website for more information: http://sourceware.org/systemtap/ 3. Updated and added packages. There is a list of all packages either added or upgraded since CentOS 4.1 in the upstream release notes, please see the upstream release notes for your architecture for CentOS-4.2 on the CentOS documentation page: http://mirror.centos.org/centos/4/docs/ -------------------------------------------------------------------- ISSUES: There is a known issue upstream when upgrading x86_64 servers. The issue seems to be related to the new audit and kernel packages when performing an upgrade. If you first install the new kernel and audit packages, then reboot and upgrade the rest of the packages, it seems to minimize this problem. Please see this bug report: http://bugs.centos.org/view.php?id=1037 -------------------------------------------------------------------- To stay current with CentOS: Visit our website at http://www.centos.org Join the CentOS mailing list at: http://lists.caosity.org/mailman/listinfo/centos Join various team members on IRC at irc.freenode.net #centos -------------------------------------------------------------------- Note: It may take a couple days for some of the mirrors to catch up. -------------------------------------------------------------------- Enjoy, The CentOS Team *********************************************************************************** This transmittal may contain confidential information intended solely for the addressee. If you are not the intended recipient, you are hereby notified that you have received this transmittal in error; any review, dissemination, distribution or copying of this transmittal is strictly prohibited. If you have received this communication in error, please notify us immediately by reply or by telephone (collect at 907-564-1000) and ask to speak with the message sender. In addition, please immediately delete this message and all attachments. Thank you. ACS

2 1

rrd compilation on Centos
by James Bond 13 Oct '05

13 Oct '05

Hi, i am trying to compile the latest version of orca source code on CentOS 4.0 system running amd64 bit processor. I am getting the following error: make[5]: Entering directory `/usr/local/src/orca-snapshot-r407/packages/rrdtool-1.0.49/perl-shared' cp RRDs.pm blib/lib/RRDs.pm cp ntmake.pl blib/lib/ntmake.pl /usr/bin/perl /usr/lib/perl5/5.8.5/ExtUtils/xsubpp -typemap /usr/lib/perl5/5.8.5/ExtUtils/typemap RRDs.xs > RRDs.xsc && mv RRDs.xsc RRDs.c gcc -c -I.. -I../src -I../gd1.3 -D_REENTRANT -D_GNU_SOURCE -DDEBUGGING -fno-strict-aliasing -pipe -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -I/usr/include/gdbm -DHAVE_CONFIG_H -O2 -g -pipe -m64 -DVERSION=\"1.000491\" -DXS_VERSION=\"1.000491\" -fPIC "-I/usr/lib64/perl5/5.8.5/x86_64-linux-thread-multi/CORE" -DPERLPATCHLEVEL=8 RRDs.c In file included from ../src/rrd_tool.h:24, from RRDs.xs:13: ../config.h:191:1: warning: "VERSION" redefined <command line>:7:1: warning: this is the location of the previous definition Running Mkbootstrap for RRDs () chmod 644 RRDs.bs rm -f blib/arch/auto/RRDs/RRDs.so gcc -shared RRDs.o -L../src/.libs/ -lrrd_private -lm -o blib/arch/auto/RRDs/RRDs.so /usr/bin/ld: ../src/.libs//librrd_private.a(parsetime.o): relocation R_X86_64_32 against `a local symbol' can not be used when making a shared object; recompile with -fPIC ../src/.libs//librrd_private.a: could not read symbols: Bad value collect2: ld returned 1 exit status make[5]: *** [blib/arch/auto/RRDs/RRDs.so] Error 1 make[5]: Leaving directory `/usr/local/src/orca-snapshot-r407/packages/rrdtool-1.0.49/perl-shared' what should i do to fix this problem and get it working? Thanks, James _________________________________________________________________ The new MSN Search Toolbar now includes Desktop search! http://toolbar.msn.co.uk/

5 4

Should I and can I upgrade GTK+/PyGTK?
by Dave Gutteridge 13 Oct '05

13 Oct '05

I'm trying out different music players. One that looks promising is called Quod Libet: http://www.sacredchao.net/quodlibet I downloaded the tar file and attempted to install it. I got this message: [dave@localhost quodlibet-0.13.1]$ ./quodlibet.py E: You need GTK+ 2.6 and PyGTK 2.6 or greater. E: You have GTK+ 2.4.13 and PyGTK 2.4.0. E: Please upgrade GTK+/PyGTK. I tried a YUM update, but it didn't say anything about new versions of GTK or PyGTK. What am I not understanding about this situation? Dave

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Re: [CentOS] way to keep program in memory
by Brian T. Brunner 13 Oct '05

13 Oct '05

Would 'man 2 mlock' help? Brian Brunner brian.t.brunner(a)gai-tronics.com (610)796-5838 >>> geisj(a)pagestation.com 10/12/05 05:47PM >>> Is there a way to specify that program X should be kep in memory and not swap it out? I have a program that takes some time to load and as long as you keep using it its responsive but if after sometime its not in use and now I use it it has a slow response till it gets swapped back in. The box in question has 1 GIG ram and its not running much else just this program really. Just looking for a way to keep it in RAM. Thanks, Jerry _______________________________________________ CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos ******************************************************************* This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This footnote also confirms that this email message has been swept for the presence of computer viruses. www.hubbell.com - Hubbell Incorporated

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