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trouble booting install CD on old machine
by Keith Keller 15 Sep '11

15 Sep '11

Hi all, I'm having a bit of an issue booting the full 5.7 install CD on an older machine. I downloaded the ISOs earlier today, checked the sha1sums, and burned the CDs with no reported errors. But when I try to boot, the isolinux banner comes up quickly, but then instead of the boot prompt, I get a completely blank screen. After 30-60 seconds, I get a message in purple, the exact wording I don't recall, but something like "can't boot, please restart". Many years ago I put CentOS 4 on this machine, so I know it can boot CD media, and earlier today I booted an older UBCD, so I know that it can successfully boot from CD at the present time. (I didn't have time to test the CD I burned in another box; I will do that next time I have the CD.) What other options do I have for getting 5.7 on this box? I have a few ideas: --do some troubleshooting with the 5.7 CD. I don't really know how to go about this, and there's no guarantee it'll end up with being able to boot in the end. --perhaps an older CentOS 5 ISO will work better? Testing this will be fairly quick but is not sure to work. --remove the system disk, put it into another system that is known to boot the 5.7 CD, install there, then put the disk back. This could be somewhat time consuming (the machine is in a rack, and the system drive is buried in the chassis, not hot-swappable), but is pretty sure to work. --try to boot from USB. As I said, it's an old box, so I'm not sure it supports booting over USB media. There were no "boot from USB" options in the BIOS; I could try to flash the firmware, but that seems excessive for this sort of issue. Other thoughts/suggestions? Any ideas why I'd be seeing this particular boot behavior? It's not something I've seen before; either booting fails before even reaching isolinux, or the kernel panics on finding some exotic and/or broken piece of hardware. --keith -- kkeller(a)wombat.san-francisco.ca.us

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Re: [CentOS] [CentOS-announce] Release for CentOS-5.7 i386 and x86_64
by Always Learning 15 Sep '11

15 Sep '11

On Wed, 2011-09-14 at 00:33 +0100, Karanbir Singh wrote: > We are pleased to announce the immediate availability of CentOS-5.7 for > i386 and x86_64 Architectures. Thank you for all the hard dedicated work. -- With best regards, Paul. England, EU.

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distro pkg update messages only email lists or website too?
by R - elists 15 Sep '11

15 Sep '11

greetings are distro pkg update messages only email lists or website too? i see that CentOS 5 kernel stuff is pushed 2x in past coupla days and just wanna make sure what differences are... or was it just a move from CR to mainline difference and upgrading same things again? - rh

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Error in updating to 5.7
by Alain Péan 15 Sep '11

15 Sep '11

Hi all, I have a Dell server, CentOS 5.6 64 bits, on which I configured the CR repository. I just tried to update to 5.7, and had this error : # yum update .... http://mirror.centos.org/centos/5/cr/x86_64/repodata/filelists.sqlite.bz2: [Errno 14] HTTP Error 404: Not Found Trying other mirror. Error: failure: repodata/filelists.sqlite.bz2 from cr: [Errno 256] No more mirrors to try. You could try using --skip-broken to work around the problem You could try running: package-cleanup --problems package-cleanup --dupes rpm -Va --nofiles --nodigest The program package-cleanup is found in the yum-utils package. My repolist is this one : # yum repolist Loaded plugins: dellsysid, fastestmirror, refresh-updatesd Loading mirror speeds from cached hostfile * addons: distrib-coffee.ipsl.jussieu.fr * base: distrib-coffee.ipsl.jussieu.fr * epel: fr2.rpmfind.net * extras: centos.crazyfrogs.org * updates: centos.crazyfrogs.org repo id repo name status addons CentOS-5 - Addons enabled: 0 base CentOS-5 - Base enabled: 3535 cr CentOS-5 - CR enabled: 573 dell-omsa-indep Dell OMSA repository - Hardware independent enabled: 719 dell-omsa-specific Dell OMSA repository - Hardware specific enabled: 2 epel Extra Packages for Enterprise Linux 5 - x86_64 enabled: 6700 extras CentOS-5 - Extras enabled: 233 updates CentOS-5 - Updates enabled: 150 repolist: 11912 Other information : # cat /etc/redhat-release CentOS release 5.6 (Final) # uname -a Linux xxxxxxx 2.6.18-274.el5 #1 SMP Fri Jul 22 04:43:29 EDT 2011 x86_64 x86_64 x86_64 GNU/Linux Does anybody has an idea why I have this error ? Thanks for the help. -- ========================================================== Alain Péan - LPP/CNRS Administrateur Système/Réseau Laboratoire de Physique des Plasmas - UMR 7648 Observatoire de Saint-Maur 4, av de Neptune, Bat. A 94100 Saint-Maur des Fossés Tel : 01-45-11-42-39 - Fax : 01-48-89-44-33 ==========================================================

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CentOS 5.6 to 5.7 upgrade
by Sorin Srbu 15 Sep '11

15 Sep '11

Hi all, Almost wish I had something more exciting to say regarding the 5.6 to 5.7 upgrade, but it just worked flawlessly. Physical as well as virtual machines. Thanks CentOS-team for your good work! -- BW, Sorin ----------------------------------------------------------- # Sorin Srbu [Sysadmin, Systems Engineer] # Dept of Medicinal Chemistry, Phone: +46 (0)18-4714482 >3 rings> GSM # Div of Org Pharm Chem, Mobile: +46 (0)701-718023 # Box 574, Uppsala University, Fax: +46 (0)18-4714482 # SE-751 23 Uppsala, Sweden Visit: BMC, Husargatan 3, D5:512b # Web: http://www.orgfarm.uu.se ----------------------------------------------------------- # () ASCII ribbon campaign - Against html E-mail # /\ http://www.asciiribbon.org # # This message was not sent from an iProduct! # # MotD follows: # "God, root, what is difference?" -Pitr from http://www.userfriendly.org/cartoons/pitr/

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Yum update to 5.7 unexpected results
by b.j. mcclure 14 Sep '11

14 Sep '11

I have a couple machines running 5.6 fully updated from cr repo. When I did 'yum update' this morning it found 8 updates: centos-release-5-7.el5 centos-release-notes-5.7-0 ghostscript 8.70-6.el5_7.3 nspr 4.8.8-1.el5_7 nss 3.12.10-4.el5 nss-tools 3.12.10-4.el5 ntp-4.2.2p1-15.el5 initscripts-8.45.38-2.el5 However yum reported 404 on everything but ntp and initscripts. I installed ntp and initscripts individually and yum continued to report 404 on the rest of the updates on both machines. One machine i386, the other x86_64. I did a 'yum clean all' followed by 'yum update' and it installed centos-release and centos-release-notes but not nss, nss-tools, ghostscript or nspr updates. []# cat /etc/redhat-release CentOS release 5.7 (Final) []# rpm -q nss nss-tools ghostscript nspr nss-3.12.8-4.el5_6 nss-tools-3.12.8-4.el5_6 ghostscript-8.70-6.el5 nspr-4.8.6-1.el5_5 Both machines had identical results and appear to be fully updated to 5.7 but with at least four packages not updated. I don't think this is an intended result. Any thoughts much appreciated. B.J. CentOS Linux release 6.0 (Final)

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Run commands automatically when bringing up/down network interfaces?
by Edward Morbius 14 Sep '11

14 Sep '11

I'm looking for a capability similar to Debian/Ubuntu's pre/post up/down network commands capability. The problem: we've got a colo in which hosts talk directly to the hosting provider's router (through a bridging firewall) and hence our hosts MAC addresses are cached by the router. We should be able to solve this by pinging the router directly when bringing up the interface, rather than waiting (a day) for the router's ARP cache to expire. Yes, this means we're switching which hosts respond to a specific IP address, yes, we have to do this periodically. An alternative would be to remap the MAC address, though pinging the router seems cleaner, and the MAC remap would /still/ have to run when the interface is brought up/down. -- Dr. Ed Morbius Chief Scientist / Philologist / Robot Wrangler / Powerplant Operator Krell Power Systems Unlimited

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TIP for broken ARIN whois
by Always Learning 14 Sep '11

14 Sep '11

This works for me on Centos 5.6. It may assist newcomers to the Linux world of Centos. whois 51.51.51.51 produces a normal and conventional display of data. However since ARIN, the North American registrar of IP addresses, "modernised" its WHOIS processing, a query to whois 64.64.64.64 will produce a one line summary of possible matches, which always includes ARIN, but omits the details we used to receive before ARIN implemented its much criticised "improved" service. A one line script solves it for me (but only for ARIN network entries). #!/bin/bash whois -h whois.arin.net n + $1 I call my script .arin .arin 64.64.64.64 produces a normal output. Paul.

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CentOS-announce Digest, Vol 79, Issue 5
by centos-announce-request＠centos.org 14 Sep '11

14 Sep '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. Release for CentOS-5.7 i386 and x86_64 (Karanbir Singh) ---------------------------------------------------------------------- Message: 1 Date: Wed, 14 Sep 2011 00:33:50 +0100 From: Karanbir Singh <kbsingh(a)centos.org> Subject: [CentOS-announce] Release for CentOS-5.7 i386 and x86_64 To: CentOS Announcements List <centos-announce(a)centos.org> Message-ID: <4E6FE85E.5080703(a)centos.org> Content-Type: text/plain; charset=ISO-8859-1 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 We are pleased to announce the immediate availability of CentOS-5.7 for i386 and x86_64 Architectures. CentOS-5.7 is based on the upstream release EL 5.7 and includes packages from all variants including Server and Client. All upstream repositories have been combined into one, to make it easier for end users to work with. This is just an announcement email, not the release notes. The Release Notes for CentOS-5.7 can be found on-line at : http://wiki.centos.org/Manuals/ReleaseNotes/CentOS5.7 and everyone is encouraged to look through them once. Also worth browsing through are the CentOS FAQs at http://wiki.centos.org/FAQ +++++++++++++++++++++++ Upgrading from CentOS-5.6 ( or CentOS-5.0/5.1/5.2/5.3/5.4/5.5): If you are already running CentOS-5.6 or an older CentOS-5 distro, all you need to do is update your machine via yum by running : 'yum update' Running 'yum list updates' before doing the update is recommended, so you can get a list of packages that are going to be updated. To check you are indeed on CentOS-5.7, run : 'rpm -q centos-release' and that should return: 'centos-release-5-7.el5.centos.1' If you are running CentOS-5.6 and have the CR repo enabled, a simple 'yum update' will still move your machine to 5.7. But since the CR repo already contained all the 5.7 updates, there will only be a handful of rpms that need to be installed for the 5.6 to 5.7 upgrade. If you are not running the CR repo, we highly encourage everyone to install and run this repository on their machines. More details on the CR repo can be found online at http://wiki.centos.org/AdditionalResources/Repositories/CR +++++++++++++++++++++++ Downloading CentOS-5.7 for new installs: When possible, consider using torrents to run the downloads. Not only does it help the community and keeps mirrors from running up high bandwidth bills, in most cases you will find its also the fastest means to download the distro. There are currently over a hundred people seeding CentOS-5 and it's possible to get upto 100mbps downloads via these torrents. - -- Via BitTorrent : CD: http://mirror.centos.org/centos/5.7/isos/i386/CentOS-5.7-i386-bin-1to8.torr… http://mirror.centos.org/centos/5.7/isos/x86_64/CentOS-5.7-x86_64-bin-1to8.… DVD: http://mirror.centos.org/centos/5.7/isos/i386/CentOS-5.7-i386-bin-DVD.torre… http://mirror.centos.org/centos/5.7/isos/x86_64/CentOS-5.7-x86_64-bin-DVD.t… md5sum's for these torrent files: 8e29e525f45c4a7b3a963cc01ec3459a CentOS-5.7-i386-bin-1to8.torrent 32c9e0826b50d6be44823523be403c7f CentOS-5.7-x86_64-bin-1to8.torrent 795d6c11b5ef8907653360af52b9f317 CentOS-5.7-i386-bin-DVD.torrent 04c563f2c838bf6b255fcc5fcc18cf66 CentOS-5.7-x86_64-bin-DVD.torrent sha1sum's for these torrent files: 8a945ba89b03328480fde20eaa0b638ceb7f4509 CentOS-5.7-i386-bin-1to8.torrent b1a18ba25e77543c4df9078dfafba990fbd58601 CentOS-5.7-x86_64-bin-1to8.torrent d3c4ed0d14fe1873bbcee931224e5e8819f779dc CentOS-5.7-i386-bin-DVD.torrent 302850dd4f9a8198b303f872c83a5a16ec1c40c2 CentOS-5.7-x86_64-bin-DVD.torrent While torrent files will do their own content checks, and only the right torrent will register and download from torrent.centos.org - its very important for your own security that an md5/sha1sum check is done on the .torrent file itself, and ensure that only the torrent.centos.org tracker is being used. Sha1sum's are more secure than md5's. Whenever possible, use sha1sum's instead of md5. - -- Via direct download: Due to bandwidth considerations the CentOS Project does not publish ISOs directly from our network machines. However direct downloads are available from external mirrors over http, ftp and rsync. A geoip based list is available at http://isoredirect.centos.org/centos/5/isos/ to give you the best predictable match ( and only lists mirrors that are updated already, so you don't need to waste time looking for a sync'd mirror ) Some mirrors also publish DVD images that can be downloaded directly. Refer to the mirrors list page at http://www.centos.org/mirrors for more details Mirrors that offer DVDs are clearly marked on the page. +++++++++++++++++++++++ sha1sum for these ISOS: i386: 6acbf1db3f4dce6dce7df15c54394a7cef6c3a7d CentOS-5.7-i386-bin-1of8.iso 241e5ea801b449ff59191c620db0a6b00b4aaaf5 CentOS-5.7-i386-bin-2of8.iso 0955c2029c1839b1e3601bb4238a2cd6c84e9aca CentOS-5.7-i386-bin-3of8.iso 7e094a60e2ddb7904e425487b8c4936e464f10a5 CentOS-5.7-i386-bin-4of8.iso 3eb0ee0b146140c4ef812d69fbc8712da1c0661d CentOS-5.7-i386-bin-5of8.iso 31b689247da34a58119b91821b13f70424e85a16 CentOS-5.7-i386-bin-6of8.iso 468eb403bd111c77e47bf31693c544ecba2fac97 CentOS-5.7-i386-bin-7of8.iso 18a43be42e159bf37deb87ce8636930ba7856f75 CentOS-5.7-i386-bin-8of8.iso e0eab4dd77c3ecc73080428beaa4ffe28984dc4b CentOS-5.7-i386-bin-DVD-1of2.iso 29158f1fc82022164a1617ce625bce4cee2480e7 CentOS-5.7-i386-bin-DVD-2of2.iso 3155e9f36dfccda5ce6cb1d60d07972b69ee6f0f CentOS-5.7-i386-netinstall.iso x86_64: cb01b0fa28367e6179a6498c52e014c43188ca86 CentOS-5.7-x86_64-bin-1of8.iso fb76b1bdf39d0130fc774c086e26da4a36584ce4 CentOS-5.7-x86_64-bin-2of8.iso d0f56df3c0756649f8068fac81c1402784fc506e CentOS-5.7-x86_64-bin-3of8.iso 1c7c77100b30c6fec3ad824bc25526a48417d3df CentOS-5.7-x86_64-bin-4of8.iso 79f8dd2de38455418aae2eaa4a404314d0c3cfa7 CentOS-5.7-x86_64-bin-5of8.iso 1d387fbfaf380c30ea90753c8311bf961e0f8394 CentOS-5.7-x86_64-bin-6of8.iso 324540e8266bdb10649e07f27f1717342a3e66c4 CentOS-5.7-x86_64-bin-7of8.iso 88c23f2d2dd78607e48041dc764ee6e6c1c11104 CentOS-5.7-x86_64-bin-8of8.iso 53be2b60dfebeded1d5a0a81cab2845579a952eb CentOS-5.7-x86_64-bin-DVD-1of2.iso 60a0e6093230c50f2d18730106ec5b8b3a200aa3 CentOS-5.7-x86_64-bin-DVD-2of2.iso a50f28edeb6835ecb478406de1568993a128f208 CentOS-5.7-x86_64-netinstall.iso +++++++++++++++++++++++ md5sum for these ISOS: i386: dc856604d09a3b6777aa1bb512a1935f CentOS-5.7-i386-bin-1of8.iso 6c6bfc2e10c3e801783ff1c5597f46dc CentOS-5.7-i386-bin-2of8.iso 49589116dccf75fbd9649ec7fb3b99b4 CentOS-5.7-i386-bin-3of8.iso 27261f30d80d91673dfb4bbf1f4aa3f5 CentOS-5.7-i386-bin-4of8.iso 2bb5e1bf2aa6a783e36337e713f92437 CentOS-5.7-i386-bin-5of8.iso c3ae081765767c8e5a63f809502c1004 CentOS-5.7-i386-bin-6of8.iso 83c55db138f03302f68c3d5364ca5e73 CentOS-5.7-i386-bin-7of8.iso 8b28bf769035010a2142e73a408705ff CentOS-5.7-i386-bin-8of8.iso f64544635a0e1198899eb756072622f5 CentOS-5.7-i386-bin-DVD-1of2.iso 048110b6c42ac84c1cf8408b75202e16 CentOS-5.7-i386-bin-DVD-2of2.iso 11222d9134cdfc101f6f91fe544254c9 CentOS-5.7-i386-netinstall.iso x86_64: 53d5f304659a9191da45e0ccb1f661f7 CentOS-5.7-x86_64-bin-1of8.iso 9620981e376f04d1473f7dc13937cf9b CentOS-5.7-x86_64-bin-2of8.iso b2d3bab3cef53da372bf95a3ac0ef16b CentOS-5.7-x86_64-bin-3of8.iso 09328f8fe5b0165b170dcdf1d4875edd CentOS-5.7-x86_64-bin-4of8.iso 0d1a88ca346e29018c3215edd34df1d1 CentOS-5.7-x86_64-bin-5of8.iso 166d128cb7256b388bbb31b49f690e3e CentOS-5.7-x86_64-bin-6of8.iso 9950dfb79e42dc42ef2b38da7580f9db CentOS-5.7-x86_64-bin-7of8.iso 5f6c110adacacaf83a43d73e5bda0ce1 CentOS-5.7-x86_64-bin-8of8.iso 55eadec0a6e87c5f2883f734d43fdb58 CentOS-5.7-x86_64-bin-DVD-1of2.iso d123b70711c8222364c0ea9a5e4a11e7 CentOS-5.7-x86_64-bin-DVD-2of2.iso 5db3d49ba7a2c56810822914fadc1edf CentOS-5.7-x86_64-netinstall.iso +++++++++++++++++++++++ Note about media: We have tried to standardise on the media between the i386 and x86_64 architectures. Each now has the same number of CD images and the same number of DVD images. CD #8 on i386 contains no rpms, and is not needed for any install type. DVD #2 on both i386 and x86_64 only contain Openoffice langpacks for languages others than english. Therefore DVD#2 is only needed when doing a desktop install, with the openoffice components selected with other than English language support. +++++++++++++++++++++++ Sources and Debuginfo packages: srpms and debuginfo packages are still making their way to the CentOS mirrors and should be online by the 20th September. We are considering changing the way we handle sources and debuginfo rpms in order to better manage publishing them and to free up mirror space. For now there will be no change to the way things are running. Any change will be communicated clearly, and we will do our best to make sure it has as little user impact as possible. +++++++++++++++++++++++ Getting Help: The best place to start when looking for help with CentOS is at the wiki ( http://wiki.centos.org/GettingHelp ) which lists various options and communities who might be able to help. If you think there is a bug in the system, do report it at http://bugs.centos.org/ - but keep in mind that the bugs system is *not* a support mechanism. Some Friendly URLs : http://www.centos.org/ http://wiki.centos.org/ http://lists.centos.org/ http://bugs.centos.org/ irc://#centos@irc.freenode.net +++++++++++++++++++++++ A big thanks to everyone who contributed towards this release, including the translation teams, the qa team, the artwork team, the CentOS Developers and all the users out there. And a special shout out to all the donors who have contributed machines, bandwidth and infrastructure towards the CentOS Project. Enjoy! - -- Karanbir Singh The CentOS Project irc: z00dax, #centos(a)irc.freenode.net -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.14 (GNU/Linux) iEYEARECAAYFAk5v6F4ACgkQqKRH3OhWKJcaigCbBoHxSLnjbKtDsSZl121WABUu nNwAn1ZjSwCKhn5uxJUK/od8bnh1A+s3 =mPjF -----END PGP SIGNATURE----- ------------------------------ _______________________________________________ CentOS-announce mailing list CentOS-announce(a)centos.org http://lists.centos.org/mailman/listinfo/centos-announce End of CentOS-announce Digest, Vol 79, Issue 5 **********************************************

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how to stop an in-progress fsck that runs at boot?
by Matt Garman 14 Sep '11

14 Sep '11

I can't seem to find the answer to this question via web search... I changed some hardware on a server, and upon powering it back on, got the "/dev/xxx has gone 40 days without being check, check forced" message. Now it's running fsck on a huge (2 TB) ext3 filesystem (5400 RPM drives no less). How can I stop this in-progress check? Ctrl-C doesn't seem to have any effect. Is the only answer to wait it out? Also, as a side question: I always do this---let my servers run for a very long time, power down to change/upgrade hardware, then forget about the forced fsck, then pull my hair out waiting for it to finish (because I can't figure out how to stop it once it starts). I know about tune2fs -c and -i, and also the last (or is it second to last?) column in /etc/fstab. My question is more along the lines of "best practices"---what are most people doing with regards to regular fsck's of ext2/3/4 filesystems? Do you just take the defaults, and let it delay the boot process by however long it takes? Disable it completely? Or do something like taking the filesystem offline on a running system? Something else? Thanks, Matt

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