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Problem with SSHD update.
by James B. Byrne 07 Jan '11

07 Jan '11

This morning I applied the 13 or so new updates to my servers. On one of them the ssh service and clients stopped working immediately after the update. I restarted the server in anticipation that there might be some instability introduced by updating on a system with active ssh connections. However, this has not cleared the problem. The packages in question are: openssh.i386 0:4.3p2-41.el5_5.1 openssh-askpass.i386 0:4.3p2-41.el5_5.1 openssh-clients.i386 0:4.3p2-41.el5_5.1 openssh-server.i386 0:4.3p2-41.el5_5.1 The error I am getting when attempting to start the sshd service is this: Starting sshd: Auto configuration failed 6486:error:0E065068:configuration file routines:STR_COPY:variable has no value:conf_def.c:629:line 207 [FAILED] Can anyone reading this inform me as to what this means, what the likely cause is, and how it may be repaired? I have webmin access to the server and, as it is inside our firewall I can probably enable telnet to get a terminal window do carry out modifications. But I need to know what it is that I need to modify. Alternatively, can anyone point me to a reference regarding removing the current version of openssh and reverting to the prior version, which worked with presumably the same user configuration that the present version does not accept. The only references that I can find respecting this error message are all several years old and some of them suggest that their is a problem with accessing or using /dev/random or /dev/urandom. This matter is somewhat urgent. I have temporarily routed essential ssh connections through a spare host but the box affected sits in front of our legacy systems providing secure access to them as their native OSs and telecom protocols do not support encryption. It is very important that the SSHD service be restored on this host as soon as is possible. Any help with this is gratefully appreciated. -- *** 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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Multiple LUN support
by Abilio Carvalho 07 Jan '11

07 Jan '11

I have Centos 5.2 and am trying to set up my first tape loader, a Quantum SuperLoader 3. My "cat /proc/scsi/scsi" outputs the following: Attached devices: Host: scsi0 Channel: 00 Id: 00 Lun: 00 Vendor: transtec Model: PV610F16R1C Rev: 373I Type: Direct-Access ANSI SCSI revision: 05 Host: scsi1 Channel: 00 Id: 01 Lun: 00 Vendor: HP Model: Ultrium 3-SCSI Rev: D22D Type: Sequential-Access ANSI SCSI revision: 03 Host: scsi1 Channel: 00 Id: 05 Lun: 00 Vendor: HP Model: Ultrium 4-SCSI Rev: B54Z Type: Sequential-Access ANSI SCSI revision: 05 It is my understanding that there should be TWO devices for the loader, one for the tape drive and one for itself. From reading around, it seems that it's lacking Multiple LUM support. My question is, are more recent versions of CentOS enabling that by default? Either compiling kernel modules or doing a full upgrade of the system are "big" jobs in my case, but I'd prefer the upgrade if 5.5 works out of the box. Or do I really need to recompile kernel, enable max_lums in modprobe.conf, etc? Thank you Abe ********************************************************************** 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 by Clearswift for the presence of computer viruses. www.clearswift.com **********************************************************************

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Configuring printers in CentOS 5
by Glenn Eychaner 07 Jan '11

07 Jan '11

Could someone please explain to me how to best configure printers in CentOS 5? I've been trying to configure a new printer, which is served by a Mac Mini: If I open a web browser at localhost:631, or "system-configure-printers" and I configure the new printer as an IPP printer, it winds up in a list of "Remote printers", and once it winds up there I can't seem to delete the printer or change the settings at all. If I try using the system-config-printers interface, it's all greyed out; if I try using CUPS, it actually tries to connect to CUPS on the Mini! In order to delete it, I have to manually revert the /etc/cups files and restart the cups printing system in system-config-services. I just don't understand printer configuration on Linux. On the Macs, it's just plug and go. Why does CentOS have to make it so confusing? -G. -- Glenn Eychaner (geychaner(a)lco.cl) Telescope Systems Programmer, Las Campanas Observatory

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SELinux - way of the future or good idea but !!!
by Alison 07 Jan '11

07 Jan '11

Hi, total newbie on CentOS. Just firing up an install of 5.5 on a development webserver. Installed Webmin, Awstats, PHPMyAdmin and Drupal successfully. Yet to work on Sendmail and Samba. SELinux in enforcing mode, reporting "SELinux preventing ifconfig (ifconfig_t) "read write" to /var/webminsessiondb.pag (var_t)". Googled the error message without real success in finding fix - bug reports showing. Question is whether worth pursuing as SELinux is the way of the future. Or is SELinux a good idea that never really made it's way into the sun. Thoughts please. Alison PS. Semi-retired. Cut my teeth as sys prog on RSX11-M systems eons ago.

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Tar so slow! Is there anything faster?
by Dotan Cohen 07 Jan '11

07 Jan '11

I need to tar up a good 100 GiB of files, but tar is progressing at a rate of about 1 MiB per second. Is there something, anything, faster? Thanks! -- Dotan Cohen http://gibberish.co.il http://what-is-what.com

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Graphing System Load MRTG
by Matt 07 Jan '11

07 Jan '11

I check system load like so: [root@server cron.daily]# w 10:07:33 up 4 days, 15:01, 2 users, load average: 4.22, 3.17, 3.09 I would like to to graph the 3.17 5 minute average with MRTG. Anyone know of some examples of doing this?

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centos 5.5 install + intel raid
by aurfalien＠gmail.com 06 Jan '11

06 Jan '11

Hi all, Installing 5.5 on a fresh system having an Intel RAID. My 2 drives are configured as a mirror within the Intel BIOS. When starting my install, Anaconda throws an exception. After a brief goog, I see one possible fix is - at the install prompt, type; linux text nodmraid This is fine and all but Centos sees 2 disks at this point rather then 1 which is what I thought the Intel RAID controller would present to the OS. I am pretty much tarded when it comes to installs as I usually boot of a DVD, enter some choices based on requirements and off I go. I once compiled a network driver into the initrd and remade my boot disk but that seems beyond me now. Any help is greatly appreciated. - aurf

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Re: [CentOS] Centos 5.5 - Kernel Panic while booting.
by David Latham 06 Jan '11

06 Jan '11

Hi, When I make DVDs of Centos and any others for that matter, I take the following steps: 1. Find an official torrent if possible. (Centos has torrents for the DVD. Unfortunately no Jigdo so far as I know.) 1.1 Torrents come with checksums and the torrent app I use will check the downloaded file against the checksums. Otherwise find a stable mirror close to where you are for better speed. 1.2 If you cant get a torrent find out if the distro vendors offer any other options. IE: Jigdo, zsync etc. etc. I usually try for one of these before going for a strait FTP download. FTP downloads often fail and are not always recoverable in the event of an interruption. Jigdo is my favourite as each and every package and file is downloaded and verified and then the DVD image (.iso) made up from all the packages. It is basically a self checking system and has proven to be very reliable. 2. Once the file is downloaded do a binary checksum using the official checksums found on the vendors homepage or mirror you downloaded from. Information on how to call sha512sum or any checksum tool to make it do a binary level checksum can be found in the man pages. (sha512sum -b filename.iso) I always go for the largest checksum algorithm provided. IE: SHA512SUM if available otherwise SHA256SUM, SHA1SUM or as a last resort MD5SUM. If this passes proceed to step 3. 3. Burning the DVD. This step is the trickiest part to get right. 3.1. Find **reliable** media. Always choose DVD-R. Go with a named brand. I usually go for spindles of 50 or less. I have found that the 100 unit spindles get a bit heavy on the ones at the bottom and I am unsure of the effect shipping and handling has on them. 3.2. Use the following wodim command: "/usr/bin/wodim dev=/dev/sr0 driveropts=burnfree fs=14M speed=4 -dao ${ISO_FILENAME}" where /dev/sr0 is your DVD device and ${ISO_FILENAME} is your iso you are trying to burn. to burn the DVD at the slowest possible speed your DVD burner will go for. Use DISK AT ONCE (dao) to write the whole file in one go. Wodim will close the disk session after burning. I know nothing about using windows tools to burn DVDs as I do this on Linux. 4. Check the media against the official checksum you used in step 2. Here are my steps for doing this. Again this has to be done right. Sometimes you will get different results if you try to simply call sha512sum -b /dev/sr0 where /dev/sr0 is your DVD drive. 4.1. Use the isoinfo tool to retreive the blocksize and blockcount of the DVD you are checking. (/usr/bin/isoinfo -d -i /dev/sr0 where /dev/sr0 is your DVD device.) 4.2. Use dd to read the disk using the correct blocksize and blockcount settings and pipe through the checksum tool. IE: "/bin/dd if=/dev/sr0 bs=${blocksize} count=${blockcount} conv=notrunc,noerror status=noxfer | sha512sum -b" where ${blocksize} and ${blockcount} are the numbers you retrieved from using isoinfo. conv=notrunc,noerror come from another post I found once. So far so good... The dd man page explains that notrunc means do not truncate the output file and noerror means continue after read errors. status=noxfer is just to keep the whole thing a little quieter by not displaying transfer statistics. You can play with these settings if you like. They have done me fine for over 400 burns since I started doing this over 2 years ago. This will produce a checksum you can visually compare with the official checksum you retrieved from the mirrors to confirm if your disk is good. I do not know of a better way, without actually installing the OS, of verifying that the media is good. I have all this scripted so complete all these steps every time I ship a DVD to any customer who orders one. Best regards David Latham http://www.thelinuxcdstore.com > Message: 1 > Date: Mon, 03 Jan 2011 13:37:17 -0500 > From: "Lisandro Grullon" <lgrullon(a)CityTech.Cuny.Edu> > Subject: Re: [CentOS] Centos 5.5 - Kernel Panic while booting. > To: <amyagi(a)gmail.com> > Cc: centos(a)centos.org > Message-ID: <4D21D10D020000890000F53B(a)email2.citytech.cuny.edu> > Content-Type: text/plain; charset="us-ascii" > > This was very helpful Akemi...I was loading centos in two other identical servers today and was having such a hard time loading it from DVD, DVD appears to be crashing, I even re-downloaded the image 3 times from three different mirrors and burn them with different applications (Nero, Roxio, and poweriso), worse case scenario it must be something with the Memorex DVD Media. Anyway, after two hours of trying I decided to do a network install and everything went flawless. Good to have many options, Centos rocks! > >>>> Akemi Yagi 12/17/10 8:13 PM >>> > On Fri, Dec 17, 2010 at 5:11 PM, Lisandro Grullon > wrote: >> Akemi, >> I went through the different mirrors and was unable to locate the ISO as it >> is stated as deprecated or unsupported, is there any plans to fix this issue >> in 5.6 or rather 6.x release. It appears that the latest build from Centos >> was built back in may, lots of bugs have emerge since them including this >> one relating to a kernel panic. Please advise in the location of 5.4, i am >> willing to try it. > > It's here: > > http://vault.centos.org/5.4/ > > Akemi > >

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Compiling thunderbird
by lhecking＠users.sourceforge.net 06 Jan '11

06 Jan '11

I'm following this thread here http://www.centos.org/modules/newbb/viewtopic.php?topic_id=23749&forum=38 to build an rpm for thunderbird 3.1.6/3.1.7 from source. While it works well on i386, compilation fails for x86_64. Any advice how to fix the spec file? ... rm -f libthebes.so c++ -fno-rtti -fno-exceptions -Wall -Wpointer-arith -Woverloaded-virtual -Wsynth -Wno-ctor-dtor-privacy -Wno-non-virtual-dtor -Wcast-align -Wno-invalid-offsetof -Wno-long-long -pedantic -fno-strict-aliasing -fshort-wchar -pthread -pipe -DNDEBUG -DTRIMMED -Os -g -pipe -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -I/usr/src/redhat/BUILD/thunderbird-3.1.7/comm-1.9.2/objdir-tb/mozilla/dist/include/cairo -I/usr/include/gtk-2.0 -I/usr/lib64/gtk-2.0/include -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/pango-1.0 -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -I/usr/include/freetype2 -I/usr/include/libpng12 -I/usr/include/gtk-unix-print-2.0 -I/usr/include/pango-1.0 -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -I/usr/include/freetype2 -fPIC -shared -Wl,-z,defs -Wl,-h,libthebes.so -o libthebes.so cairo-xlib-utils.o woff.o gfxASurface.o gfxAlphaRecovery.o gfxBlur.o gfxContext.o gfxImageSurface.o gfxFont.o gfxFontMissingGlyphs.o gfxFontTest.o gfxFontUtils.o gfxMatrix.o gfxPath.o gfxPattern.o gfxPlatform.o gfxPlatformFontList.o gfxRect.o gfxSkipChars.o gfxTextRunCache.o gfxTextRunWordCache.o gfxUserFontSet.o gfxPangoFonts.o gfxXlibSurface.o gfxPlatformGtk.o gfxGdkNativeRenderer.o gfxPDFSurface.o gfxPSSurface.o gfxFontconfigUtils.o gfxFT2FontBase.o gfxFT2Utils.o nsUnicodeRange.o -lpthread -Wl,-rpath,/usr/lib64/thunderbird-3.1 -Wl,-rpath-link,/usr/src/redhat/BUILD/thunderbird-3.1.7/comm-1.9.2/objdir-tb/mozilla/dist/bin -Wl,-rpath-link,/usr/lib ../../../gfx/cairo/cairo/src/libmozcairo.a ../../../gfx/cairo/libpixman/src/libmozlibpixman.a -L/usr/lib64 -lXrender -lfreetype -lfontconfig /usr/src/redhat/BUILD/thunderbird-3.1.7/comm-1.9.2/objdir-tb/mozilla/dist/lib/libunicharutil_s.a -L/usr/src/redhat/BUILD/thunderbird-3.1.7/comm-1.9.2/objdir-tb/mozilla/dist/bin -lxpcom -lxpcom_core -L/usr/src/redhat/BUILD/thunderbird-3.1.7/comm-1.9.2/objdir-tb/mozilla/dist/lib -lplds4 -lplc4 -lnspr4 -lpthread -ldl -lz ../../../gfx/qcms/libmozqcms.a ../../../gfx/ots/src/libmozots.a -L/lib64 -lpangoft2-1.0 -lpango-1.0 -lgobject-2.0 -lgmodule-2.0 -ldl -lglib-2.0 -lz -L/usr/lib64 -lX11 -L/lib64 -lgtk-x11-2.0 -latk-1.0 -lgdk-x11-2.0 -lgdk_pixbuf-2.0 -lm -lpangocairo-1.0 -lpango-1.0 -lcairo -lgobject-2.0 -lgmodule-2.0 -ldl -lglib-2.0 -lasound -ldl -lm /usr/bin/ld: gfxUserFontSet.o: relocation R_X86_64_PC32 against `ots::Process(ots::OTSStream*, unsigned char const*, unsigned long, bool)' can not be used when making a shared object; recompile with -fPIC /usr/bin/ld: final link failed: Bad value collect2: ld returned 1 exit status --------------------------------------------------------------- This message and any attachments may contain Cypress (or its subsidiaries) confidential information. If it has been received in error, please advise the sender and immediately delete this message. ---------------------------------------------------------------

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CentOS-announce Digest, Vol 71, Issue 1
by centos-announce-request＠centos.org 06 Jan '11

06 Jan '11

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-2011:0004 Important CentOS 5 i386 kernel Update (Karanbir Singh) 2. CESA-2011:0004 Important CentOS 5 x86_64 kernel Update (Karanbir Singh) ---------------------------------------------------------------------- Message: 1 Date: Thu, 6 Jan 2011 12:23:15 +0000 From: Karanbir Singh <kbsingh(a)centos.org> Subject: [CentOS-announce] CESA-2011:0004 Important CentOS 5 i386 kernel Update To: centos-announce(a)centos.org Message-ID: <20110106122315.GA18304(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2011:0004 Important Upstream details at : https://rhn.redhat.com/errata/RHSA-2011-0004.html The following updated files have been uploaded and are currently syncing to the mirrors: ( md5sum Filename ) i386: 7b014beebd94699f73c4def3cf42904a kernel-2.6.18-194.32.1.el5.i686.rpm 182d647cbabd24ed7e55be10ac1a1ee5 kernel-debug-2.6.18-194.32.1.el5.i686.rpm aa4bd8b6980a41184a3855a3d740c069 kernel-debug-devel-2.6.18-194.32.1.el5.i686.rpm e4773418e9d6283e992581bc705c8586 kernel-devel-2.6.18-194.32.1.el5.i686.rpm 565ace179f1d13b815b6e7bab64fd96f kernel-doc-2.6.18-194.32.1.el5.noarch.rpm 3f62ab7e59436c2c70e3c19c1fb5a6fd kernel-headers-2.6.18-194.32.1.el5.i386.rpm 31aba283f0836439ba636486e25b0b99 kernel-PAE-2.6.18-194.32.1.el5.i686.rpm 3522478de8f3b8d04d1efae090b5d686 kernel-PAE-devel-2.6.18-194.32.1.el5.i686.rpm 2043535dbc092bc48b841161a85727b5 kernel-xen-2.6.18-194.32.1.el5.i686.rpm 3f72b85c494ede0281f42f44ccab7aee kernel-xen-devel-2.6.18-194.32.1.el5.i686.rpm Source: 621b12f22bfde971ac50d6fddea06c50 kernel-2.6.18-194.32.1.el5.src.rpm -- Karanbir Singh CentOS Project { http://www.centos.org/ } irc: z00dax, #centos(a)irc.freenode.net ------------------------------ Message: 2 Date: Thu, 6 Jan 2011 12:23:15 +0000 From: Karanbir Singh <kbsingh(a)centos.org> Subject: [CentOS-announce] CESA-2011:0004 Important CentOS 5 x86_64 kernel Update To: centos-announce(a)centos.org Message-ID: <20110106122315.GA18321(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2011:0004 Important Upstream details at : https://rhn.redhat.com/errata/RHSA-2011-0004.html The following updated files have been uploaded and are currently syncing to the mirrors: ( md5sum Filename ) x86_64: 956733c501183a6354ebcee2774b0c30 kernel-2.6.18-194.32.1.el5.x86_64.rpm 64f6fbdf7520e6d83dec94d8c07e4589 kernel-debug-2.6.18-194.32.1.el5.x86_64.rpm e6e7c3d69b4ed902788555979eb6da10 kernel-debug-devel-2.6.18-194.32.1.el5.x86_64.rpm f1c12f7e7c579e1362c5f6efe9d5ec15 kernel-devel-2.6.18-194.32.1.el5.x86_64.rpm af191f7f689b172db4bc1d70ee7f3988 kernel-doc-2.6.18-194.32.1.el5.noarch.rpm 4be0a1ad9335fdeb7d781fd43c3756e8 kernel-headers-2.6.18-194.32.1.el5.x86_64.rpm f3f93494d59f8b13a4b99c40a0f7a889 kernel-xen-2.6.18-194.32.1.el5.x86_64.rpm ab5c8fee67ff44dc4a5bf3cb05da2306 kernel-xen-devel-2.6.18-194.32.1.el5.x86_64.rpm Source: 621b12f22bfde971ac50d6fddea06c50 kernel-2.6.18-194.32.1.el5.src.rpm -- Karanbir Singh CentOS Project { http://www.centos.org/ } irc: z00dax, #centos(a)irc.freenode.net ------------------------------ _______________________________________________ CentOS-announce mailing list CentOS-announce(a)centos.org http://lists.centos.org/mailman/listinfo/centos-announce End of CentOS-announce Digest, Vol 71, Issue 1 **********************************************

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