Discuss July 2008

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347 participants
435 discussions

Securing serial ports - fax modems
by James B. Byrne 25 Jul '08

25 Jul '08

I have already deployed a fax server and am about to deploy a backup system for this host at our off-site facility. It struck me that I have given no thought to securing the serial port to unauthorized access. The modem is a Multi-Tech MT5634ZBA which supports data as well as fax. So this poses the same type of risk, if not to the same degree, as an ssh or telnet port but without the availability of a firewall to throttle repeated unsuccessful connection attempts. Are there any recommendations on what should be done in this circumstance or am I fretting unduly? Regards, -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:ByrneJB@Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3

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You didn't give me some packages, so now I'm giving you some! R, TexLive, LyX, Gnumeric, etc.
by Paul Johnson 25 Jul '08

25 Jul '08

I want up-to-dateish versions of TexLive, R, gnumeric, emacs, but on a more-or-less stable base of Centos-5.2. I asked for packages in this, but got no answers. So now I've built them and will let you try them if you want. I used the source packages from Fedora 8 and 9. I wanted TexLive because many of us have jumped ship to Ubuntu Linux 8.04 and it does offer TexLive, and the compatability across systems became an issue. With Centos5.2 shipping the years-out-of-date tetex, we were seeing things compile differently across systems. Making TexLive compile and install required a re-build with a newer version of poppler, but not with the absolutely newest version of poppler. Replacing poppler required a rebuild of evince. After emerging from dependency hell, it all seems OK. I uploaded the src.rpm files for the packages that I actually had to re-configure, even in the slightest. Otherwise, everything is in Fedora 8 or Fedora 9. We use LyX to edit LaTeX, so I had to have a newer version, along with pybliographic (which required recode). We also use Emacs and auctex to edit LaTeX, so those had to be built as well. All of these packages were built on a stock Centos 5.2 system, with all components as usual EXCEPT for the ones I provide below or the packages that can be downloaded from EPEL. As far as I can tell, everything works as well as it does on Fedora, no better. Go here in your web browser to look it over. http://pj.freefaculty.org/Centos/ My PGP key is in the top directory http://pj.freefaculty.org/Centos/PaulJohnson-BinaryPackageSigningKey And under i386 you should see I've created an RPM repository. I don't have any i686 machines for which I'm doing this work, sorry. To use yum, I think you should specify the repository as [kups] name=Extra Packages for Centos Linux 5 - $basearch baseurl=http://pj.freefaculty.org/Centos/$basearch enabled=1 gpgcheck=1 Here is a package list (look under i386/kups/packages). R-2.7.0-5Centos5.2pj..> 22-Jul-2008 08:01 25.5M R-debuginfo-2.7.0-5C..> 22-Jul-2008 08:02 5.8M R-devel-2.7.0-5Cento..> 22-Jul-2008 08:04 93k aiksaurus-1.2.1-15.i..> 22-Jul-2008 08:03 350k aiksaurus-debuginfo-..> 22-Jul-2008 08:03 283k aiksaurus-devel-1.2...> 22-Jul-2008 08:03 6k aiksaurus-gtk-1.2.1-..> 22-Jul-2008 08:03 39k aiksaurus-gtk-devel-..> 22-Jul-2008 07:59 5k cairo-1.6.4-1.i386.rpm 17-Jul-2008 07:23 554k cairo-debuginfo-1.6...> 22-Jul-2008 07:59 904k cairo-devel-1.6.4-1...> 22-Jul-2008 08:02 168k dkms-openafs-1.4.7-1..> 22-Jul-2008 08:00 958k dvipdfm-0.13.2d-30Ce..> 22-Jul-2008 08:00 135k dvipng-1.9-30Centos5..> 22-Jul-2008 08:00 103k emacs-22.2-4Centos5...> 22-Jul-2008 08:01 2.0M emacs-auctex-11.85-8..> 22-Jul-2008 08:09 500k emacs-auctex-doc-11...> 22-Jul-2008 08:09 1.0M emacs-auctex-el-11.8..> 17-Jul-2008 22:31 355k emacs-common-22.2-4C..> 22-Jul-2008 08:03 19.3M emacs-debuginfo-22.2..> 22-Jul-2008 08:00 4.6M emacs-el-22.2-4Cento..> 22-Jul-2008 08:01 11.0M emacs-nox-22.2-4Cent..> 22-Jul-2008 08:00 1.7M evince-2.20.1-1Cento..> 22-Jul-2008 07:59 1.2M evince-debuginfo-2.2..> 22-Jul-2008 08:03 1.1M gnome-doc-utils-0.12..> 22-Jul-2008 08:09 275k gnome-doc-utils-styl..> 22-Jul-2008 08:09 123k gnome-icon-theme-2.1..> 22-Jul-2008 08:09 3.4M gnumeric-1.8.2-2Cent..> 22-Jul-2008 08:03 11.7M gnumeric-debuginfo-1..> 22-Jul-2008 08:02 5.9M gnumeric-devel-1.8.2..> 22-Jul-2008 08:05 102k goffice-0.6.2-1Cento..> 22-Jul-2008 08:03 1.4M goffice-debuginfo-0...> 22-Jul-2008 08:04 1.8M goffice-devel-0.6.2-..> 22-Jul-2008 08:00 301k info-4.11-5.i386.rpm 22-Jul-2008 08:01 166k kmod-openafs-1.4.7-1..> 22-Jul-2008 08:10 228k kpathsea-2007-30Cent..> 22-Jul-2008 08:04 113k kpathsea-devel-2007-..> 22-Jul-2008 07:58 177k libRmath-2.7.0-5Cent..> 22-Jul-2008 08:01 93k libRmath-devel-2.7.0..> 22-Jul-2008 07:59 121k libgsf-1.14.8-1Cento..> 17-Jul-2008 23:08 126k libgsf-debuginfo-1.1..> 22-Jul-2008 08:01 416k libgsf-devel-1.14.8-..> 22-Jul-2008 07:59 123k libgsf-gnome-1.14.8-..> 22-Jul-2008 08:04 15k libgsf-gnome-devel-1..> 22-Jul-2008 08:03 9k libgsf-python-1.14.8..> 22-Jul-2008 07:59 17k lyx-1.5.5-1.i386.rpm 22-Jul-2008 08:04 9.4M lyx-debuginfo-1.5.5-..> 22-Jul-2008 08:02 31.7M lzma-4.32.0-0.6.beta..> 22-Jul-2008 08:04 69k lzma-debuginfo-4.32...> 22-Jul-2008 08:02 207k lzma-devel-4.32.0-0...> 22-Jul-2008 08:00 6k lzma-libs-4.32.0-0.6..> 22-Jul-2008 08:05 20k mendexk-2.6e-30Cento..> 22-Jul-2008 08:05 44k openafs-1.4.7-1.1Cen..> 22-Jul-2008 08:00 3.2M openafs-authlibs-1.4..> 22-Jul-2008 08:00 186k openafs-authlibs-dev..> 22-Jul-2008 08:02 226k openafs-client-1.4.7..> 22-Jul-2008 08:02 508k openafs-compat-1.4.7..> 22-Jul-2008 08:02 14k openafs-debuginfo-1...> 22-Jul-2008 08:04 12.7M openafs-debuginfo-1...> 22-Jul-2008 08:10 4.2M openafs-devel-1.4.7-..> 22-Jul-2008 07:59 946k openafs-docs-1.4.7-1..> 22-Jul-2008 08:04 3.4M openafs-kernel-sourc..> 22-Jul-2008 08:02 971k openafs-kpasswd-1.4...> 22-Jul-2008 08:04 104k openafs-krb5-1.4.7-1..> 22-Jul-2008 08:01 132k openafs-server-1.4.7..> 22-Jul-2008 08:01 1.7M pixman-0.10.0-1.i386..> 22-Jul-2008 08:01 75k pixman-debuginfo-0.1..> 17-Jul-2008 07:22 274k pixman-devel-0.10.0-..> 22-Jul-2008 08:04 10k poppler-0.6.2-1Cento..> 22-Jul-2008 08:03 3.1M poppler-debuginfo-0...> 22-Jul-2008 07:59 3.2M poppler-devel-0.6.2-..> 22-Jul-2008 08:00 232k poppler-qt-0.6.2-1Ce..> 22-Jul-2008 08:01 28k poppler-qt-devel-0.6..> 22-Jul-2008 08:02 12k poppler-qt4-0.6.2-1C..> 22-Jul-2008 08:04 143k poppler-qt4-devel-0...> 22-Jul-2008 08:05 22k poppler-utils-0.6.2-..> 17-Jul-2008 18:08 79k pybliographer-1.2.11..> 22-Jul-2008 08:09 851k python-bibtex-1.2.4-..> 22-Jul-2008 07:58 38k python-bibtex-debugi..> 22-Jul-2008 08:00 90k recode-3.6-26Centos5..> 22-Jul-2008 08:02 839k recode-debuginfo-3.6..> 22-Jul-2008 08:02 1.2M recode-devel-3.6-26C..> 22-Jul-2008 08:04 13k teckit-2.2.1-3.i386.rpm 22-Jul-2008 08:02 322k teckit-debuginfo-2.2..> 22-Jul-2008 08:02 599k teckit-devel-2.2.1-3..> 22-Jul-2008 08:01 501k tex-preview-11.85-8C..> 22-Jul-2008 08:08 53k texinfo-4.11-5.i386.rpm 22-Jul-2008 07:59 841k texinfo-debuginfo-4...> 17-Jul-2008 22:20 676k texinfo-tex-4.11-5.i..> 22-Jul-2008 07:59 135k texlive-2007-30Cento..> 22-Jul-2008 08:03 1.9M texlive-afm-2007-30C..> 22-Jul-2008 08:04 45k texlive-context-2007..> 22-Jul-2008 08:04 54k texlive-debuginfo-20..> 22-Jul-2008 08:03 8.3M texlive-doc-2007-30C..> 22-Jul-2008 08:01 37k texlive-dvips-2007-3..> 22-Jul-2008 08:03 186k texlive-dviutils-200..> 22-Jul-2008 07:59 286k ecd texlive-east-asian-2..> 22-Jul-2008 08:00 384k texlive-latex-2007-3..> 22-Jul-2008 07:59 76k texlive-texmf-2007-2..> 22-Jul-2008 08:09 3.5M texlive-texmf-afm-20..> 22-Jul-2008 08:09 6.2M texlive-texmf-contex..> 22-Jul-2008 08:08 3.1M texlive-texmf-doc-20..> 22-Jul-2008 08:09 185M texlive-texmf-dvips-..> 22-Jul-2008 08:09 388k texlive-texmf-east-a..> 22-Jul-2008 08:08 800k texlive-texmf-errata..> 22-Jul-2008 08:08 4k texlive-texmf-errata..> 22-Jul-2008 08:09 4k texlive-texmf-errata..> 22-Jul-2008 08:08 3k texlive-texmf-errata..> 17-Jul-2008 19:24 4k texlive-texmf-errata..> 22-Jul-2008 08:09 4k texlive-texmf-errata..> 22-Jul-2008 08:08 4k texlive-texmf-errata..> 22-Jul-2008 08:09 4k texlive-texmf-errata..> 22-Jul-2008 08:09 4k texlive-texmf-errata..> 22-Jul-2008 08:08 3k texlive-texmf-fonts-..> 22-Jul-2008 08:08 56.6M texlive-texmf-latex-..> 22-Jul-2008 08:08 6.2M texlive-texmf-xetex-..> 22-Jul-2008 08:08 227k texlive-utils-2007-3..> 17-Jul-2008 19:00 213k texlive-xetex-2007-3..> 17-Jul-2008 19:00 2.9M -- Paul E. Johnson Professor, Political Science 1541 Lilac Lane, Room 504 University of Kansas

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How to detect whether running on VMware?
by tony＠softins.clara.co.uk 25 Jul '08

25 Jul '08

Does anyone know how a program, script or shell user can best determine whether the machine is running on bare metal or is a VMware guest? Cheers Tony -- Tony Mountifield Work: tony(a)softins.co.uk - http://www.softins.co.uk Play: tony(a)mountifield.org - http://tony.mountifield.org

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Re: [CentOS] Re: 6TB SCSI RAID vs. Centos
by Tim Nelson 25 Jul '08

25 Jul '08

I'm using a Dell PERC 5/i with the drives configured as simple volumes (aka no hardware RAID). I beleive the PERCs are based on an LSI MegaRAID chipset/controller... Tim Nelson Systems/Network Support Rockbochs Inc. (218)727-4332 x105 ----- Original Message ----- From: "Milt Mallory" <milt(a)topix.net> To: "CentOS mailing list" <centos(a)centos.org> Sent: Friday, July 25, 2008 12:39:07 PM GMT -06:00 US/Canada Central Subject: RE: [CentOS] Re: 6TB SCSI RAID vs. Centos What SCSI controller are you using? -----Original Message----- From: centos-bounces(a)centos.org [mailto:centos-bounces@centos.org] On Behalf Of Tim Nelson Sent: Thursday, July 24, 2008 7:05 PM To: CentOS mailing list Subject: Re: [CentOS] Re: 6TB SCSI RAID vs. Centos I'll second that... we recently put a system online with over 3TB of storage. The only way to create a storage medium that large was to use a gpt disk label and use parted to do the partitioning. mkfs had no problems formatting the partition and it's been working properly for quite some time now. Tim Nelson Systems/Network Support Rockbochs Inc. (218)727-4332 x105 ----- Original Message ----- From: "Scott Silva" <ssilva(a)sgvwater.com> To: centos(a)centos.org Sent: Thursday, July 24, 2008 5:56:47 PM GMT -06:00 Guadalajara / Mexico City / Monterrey Subject: [CentOS] Re: 6TB SCSI RAID vs. Centos on 7-24-2008 3:42 PM Milt Mallory spake the following: > I have an Infortrend RAID box I'd like to see as one big 6TB partition, > but I only can get 2.2TB partitions to work. I was trying to do this > with an Adaptec controller but apparently they are only (any of them) 48 > bits wide. Does anybody have a working system for SCSI/Centos over 2.2TB? > > Did you try creating GPT partitions with parted? Fdisk won't do it. -- MailScanner is like deodorant... You hope everybody uses it, and you notice quickly if they don't!!!! _______________________________________________ CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos _______________________________________________ CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos _______________________________________________ CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos

2 1

Re: [CentOS] Re: 6TB SCSI RAID vs. Centos
by Ross S. W. Walker 25 Jul '08

25 Jul '08

There is another way too, make the disk a raw PV (no partition table) and use LVM. LVM can handle PVs up to 2^64 in size. Then when creating LVs you only have to worry about what the max file system size is. -Ross ----- Original Message ----- From: centos-bounces(a)centos.org <centos-bounces(a)centos.org> To: CentOS mailing list <centos(a)centos.org> Sent: Thu Jul 24 22:04:42 2008 Subject: Re: [CentOS] Re: 6TB SCSI RAID vs. Centos I'll second that... we recently put a system online with over 3TB of storage. The only way to create a storage medium that large was to use a gpt disk label and use parted to do the partitioning. mkfs had no problems formatting the partition and it's been working properly for quite some time now. Tim Nelson Systems/Network Support Rockbochs Inc. (218)727-4332 x105 ----- Original Message ----- From: "Scott Silva" <ssilva(a)sgvwater.com> To: centos(a)centos.org Sent: Thursday, July 24, 2008 5:56:47 PM GMT -06:00 Guadalajara / Mexico City / Monterrey Subject: [CentOS] Re: 6TB SCSI RAID vs. Centos on 7-24-2008 3:42 PM Milt Mallory spake the following: > I have an Infortrend RAID box I’d like to see as one big 6TB partition, > but I only can get 2.2TB partitions to work. I was trying to do this > with an Adaptec controller but apparently they are only (any of them) 48 > bits wide. Does anybody have a working system for SCSI/Centos over 2.2TB? > > Did you try creating GPT partitions with parted? Fdisk won't do it. -- MailScanner is like deodorant... You hope everybody uses it, and you notice quickly if they don't!!!! _______________________________________________ CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos _______________________________________________ CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos ______________________________________________________________________ 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.

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Spamassassin as root and pyzor
by Hywel Richards 25 Jul '08

25 Jul '08

I've just set up a new mailserver using Centos5.2 (sendmail+clamav-milter+spamass-milter). I'm using the spamass-milter package from rpmforge (spamass-milter-0.3.1-1.el5.rf). I notice that the default setup is to run it as root. I set up my previous mailserver on Centos4, and I can't remember if I did anything special, but on that machine it runs as user "sa-milt". Is it safe/recommended to run spamass-milter as root? Does it in fact shed the root privileges or something like that when it actually does some processing anyway? Are there good reasons why I should leave it run as root (besides it being the least effort option)? I found a few discussions on this topic on the web but I have ended up confused and would appreciate some advice. Ideally I would like a link to a webpage entitled "How I learnt to stop worrying and run spamass-milter as root". Also, a related question: is it worth installing pyzor, or will spamassassin on its own be enough? I ask because pyzor doesn't seem to be in any of the main repositories. Thanks in advance, Hywel.

3 3

Missing SDLT600's
by Daniel Bird 25 Jul '08

25 Jul '08

Hi All, I have a CentOS5.2 server using a Qlogic QLE220 HBA, connected to Quantum DX30 and M1800 libraries via a Qlogic SANbox 5600 switch. I've installed the latest (v8.02.14) drivers from Qlogic for the HBA The issue I have is I am missing 2 of the 4 SDLT drives provided by the M1800 Library. The DX30 provides 6 drives, which are listed in dmesg and assigned /dev/st0->5. I would expect the SDLT's to be st6->10 but I only see up to st7 and dmesg only lists 2 Using the QLoigic SAN Surfer software all the LUN's/devices are visible to the host. FYI, I also have an old Sun220R connected to this same switch with a qlogic card; Solaris 9 has no trouble seeing all LUNs and devices. I've "googled" for a fair while and have not see anything that helps. My FC knowledge on CentOS is limited so any help with troubleshooting this would be greatly appreciated. TIA Dan

2 4

need content of /etc/redhat-release
by mcclnx mcc 25 Jul '08

25 Jul '08

Can anyone tell me what inside /etc/redhat-release? Our application wil check it and not accept "CENTOS ...". what I need are: 1. REDHAT 5.2 (X86_64) 2. REDHAT 4.6 (X86_64) Thanks. _______________________________________________________________________________________________________ 總會在某些時刻，突然想起舊情人？他現在過得還好嗎？ http://sev.search.yahoo.net

9 10

Native Command Queueing
by Matt 24 Jul '08

24 Jul '08

Is there anyway to enable NCQ on CentOS 4.6? I guess anouther question is on a somewhat high activity mail server with a single SATA2 drive will it do any good? Matt

5 10

POOR: results using 'dig +short porttest.dns-oarc.net TXT'
by Larry Vaden 24 Jul '08

24 Jul '08

What are the likely cockpit errors involved when getting POOR results when running this test on an updated CentOS 5.2? Kind regards/ldv [root@shell ~]# dig +short porttest.dns-oarc.net TXT z.y.x.w.v.u.t.s.r.q.p.o.n.m.l.k.j.i.h.g.f.e.d.c.b.a.pt.dns-oarc.net. "a.b.c.d is POOR: 26 queries in 1.3 seconds from 1 ports with std dev 0.00"

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