Discuss April 2013

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168 participants
148 discussions

Cents OS from Bash Shell
by Adekoya Adekunle 26 Apr '13

26 Apr '13

I want to know the right command to type from a bash shell so that i can 1) Check the version of my cent os 2) Check all the open ports (tcp and udp) on my machine 3) Open a specific port say port 3306 so that a telnet request from a remote machiene can be accepted 4) Disable the effect of 3 above in case I want to Thanks in anticiaption of your kind responses to the questions above.

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Re: [CentOS] Cents OS from Bash Shell
by Phil Dobbin 25 Apr '13

25 Apr '13

On 04/26/2013 12:40 AM, Reindl Harald wrote: > > > Am 26.04.2013 01:35, schrieb Phil Dobbin: >> How odd. On my 64-bit CentOS 6.3, 'lsb_release -a' returns: >> >> 'bash: lsb_release: command not found' >> >> Works on Debian 6.0.5 & Ubuntu 12.04.2 & 12.10. >> >> The CentOS distro is a cloud server image if that makes any difference >> although I wouldn't have thought so > > and what says "rpm -qa | grep lsb"? > > redhat-lsb.i686 : LSB base libraries support for CentOS > redhat-lsb.x86_64 : LSB base libraries support for CentOS > redhat-lsb-compat.i686 : LSB package split dependency compat helper > redhat-lsb-compat.x86_64 : LSB package split dependency compat helper > redhat-lsb-core.i686 : LSB base libraries support for CentOS > redhat-lsb-core.x86_64 : LSB base libraries support for CentOS > redhat-lsb-graphics.i686 : LSB graphics libraries support for CentOS > redhat-lsb-graphics.x86_64 : LSB graphics libraries support for CentOS > redhat-lsb-printing.i686 : LSB printing libraries support for CentOS > redhat-lsb-printing.x86_64 : LSB printing libraries support for CentOS > Point taken. Nothing. I'll install them now. Cheers, Phil... -- currently (ab)using CentOS 5.9 & 6.4, Debian Squeeze & Wheezy, Fedora Beefy, Spherical & That Damn Cat, Lubuntu 12.10, OS X Snow Leopard & Ubuntu Precise, Quantal & Raring GnuPG Key : http://www.horse-latitudes.co.uk/publickey.asc

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Upgrading 6.3 to 6.4 "kdump: mkdumprd: failed to make kdump initrd" should I be concerned?
by P J 25 Apr '13

25 Apr '13

Howdy, Running a round of updates from 6.3 to 6.4 and I'm seeing the following on all the servers. Want to make sure I'm not going to end up with a kernel panic if I reboot into the new kernel or have any other issues. Apr 22 11:10:21 www kdump: kexec: unloaded kdump kernel Apr 22 11:10:21 www kdump: stopped Apr 22 11:10:21 www kdump: mkdumprd: failed to make kdump initrd Apr 22 11:10:21 www kdump: failed to start up, config file incorrect I've never touched kdump.conf, or really used kdump at all.. /etc/kdump.conf shows: #raw /dev/sda5 #ext4 /dev/sda3 #ext4 LABEL=/boot #ext4 UUID=03138356-5e61-4ab3-b58e-27507ac41937 #net my.server.com:/export/tmp #net user(a)my.server.com path /var/crash core_collector makedumpfile -c --message-level 1 -d 31 #core_collector scp #core_collector cp --sparse=always #extra_bins /bin/cp #link_delay 60 #kdump_post /var/crash/scripts/kdump-post.sh #extra_bins /usr/bin/lftp #disk_timeout 30 #extra_modules gfs2 #options modulename options #default shell #debug_mem_level 0 #force_rebuild 1 #sshkey /root/.ssh/kdump_id_rsa Thanks in advance for any help or feedback. -PJ

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DIMM problem
by m.roth＠5-cent.us 25 Apr '13

25 Apr '13

Hey, folks, I've got an HP Proliant DL580 G5 throwing ECC errors. This is annoying, since a) it's all new as of a few months ago, and b) it's *fully* populated. The two things I need to figure out are a) *which* DIMM it is, and b) is it mirrored; if so, which *other* DIMM needs to come out until we get replacements from the OEM. Here's one of many, all identical, from dmesg: EDAC MC0: CE row 12, channel 1, label "": Corrected error (Branch=0, Channel 1), DRAM-Bank=2 RD RAS=8218 CAS=500, CE Err=0x10000, Syndrome=0x6cad8e02(Correctable Patrol Data ECC)) I see the Bank=2, so I assume that's the first riser board on the left; but I can't identify which of the four (?) DIMMs on it is the problem. I've been googling, and skimming useless manuals, and have just been trying to look under /sys/devices/system/edac/mc/mc0/. I see ce_count there showing thousands; but all of the ce_count files under csrow[0-7] show zero. Clues, anyone? mark

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hard drive question - WD red
by m.roth＠5-cent.us 25 Apr '13

25 Apr '13

I see a really good price, and better for quantity, for 3TB drives. Now, I've been down on WD for a couple of years, since I found that they'd protected certain h/d parms from being changed (like TLER). The ones I'm looking at are the Red, which seems to be a new color (at least to me), and one technical review I've read says that they're intended for NAS, etc, and you can adjust those parms. They're *not* supposed to be "enterprise" or server grade, but it sounds like they'd work with RAID. Anyone know anything about them? mark, checking before I buy

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Getting confirmation for power button
by Vanhorn, Mike 25 Apr '13

25 Apr '13

Using CentOS 5.8: Currently on my workstations, when I press the power button the computer immediately does a 'shutdown -h now' (per /etc/acpid/events/power.conf). Is there a way to change it so that a confirmation dialog comes up, rather than an immediate shutdown? I assume that I am going to need to change that power.conf file to tell some program that the power button's been pressed, rather than making a call to shutdown, but I haven't been able to figure out what program to which I need to make a call. Thanks! --- Mike VanHorn Senior Computer Systems Administrator College of Engineering and Computer Science Wright State University 265 Russ Engineering Center 937-775-5157 michael.vanhorn(a)wright.edu http://www.cecs.wright.edu/~mvanhorn/

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CentOS-announce Digest, Vol 98, Issue 13
by centos-announce-request＠centos.org 25 Apr '13

25 Apr '13

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-2013:0771 Moderate CentOS 6 curl Update (Johnny Hughes) 2. CESA-2013:0770 Important CentOS 6 java-1.6.0-openjdk Update (Johnny Hughes) 3. CESA-2013:0771 Moderate CentOS 5 curl Update (Johnny Hughes) 4. CESA-2013:0770 Important CentOS 5 java-1.6.0-openjdk Update (Johnny Hughes) 5. CESA-2013:0769 Low CentOS 5 glibc Update (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Wed, 24 Apr 2013 21:39:40 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CESA-2013:0771 Moderate CentOS 6 curl Update To: centos-announce(a)centos.org Message-ID: <20130424213940.GA11041(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2013:0771 Moderate Upstream details at : https://rhn.redhat.com/errata/RHSA-2013-0771.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: a7ee4d657c518a9b7e61bae23d6332346098a66af7c3dec13313ca784e53648e curl-7.19.7-36.el6_4.i686.rpm 0afd8862088bb8ff0e38e74d120540e8d171f62542c0b85beeb97252676b84b9 libcurl-7.19.7-36.el6_4.i686.rpm 8b89ac354749cb5598c27fe4d98b361dc3db529f620254b62a832a9f04e9d60a libcurl-devel-7.19.7-36.el6_4.i686.rpm x86_64: dbb9c9e3c49fc4dc24797b9ca159e5057b33f8b2ec2e8a1dd359eda3f4577762 curl-7.19.7-36.el6_4.x86_64.rpm 0afd8862088bb8ff0e38e74d120540e8d171f62542c0b85beeb97252676b84b9 libcurl-7.19.7-36.el6_4.i686.rpm dfba02d2a3a90cfbe815f140704d57ddddcf1a8257e6c55c87a416908335bc99 libcurl-7.19.7-36.el6_4.x86_64.rpm 8b89ac354749cb5598c27fe4d98b361dc3db529f620254b62a832a9f04e9d60a libcurl-devel-7.19.7-36.el6_4.i686.rpm c62471a0478f79523c89e1a2f8196cc90a62191602233a65603653f957f811fe libcurl-devel-7.19.7-36.el6_4.x86_64.rpm Source: 5f01b037f638cb8777802968db12584ed450265fd469820e81203e9a2507d4dd curl-7.19.7-36.el6_4.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 2 Date: Wed, 24 Apr 2013 21:40:25 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CESA-2013:0770 Important CentOS 6 java-1.6.0-openjdk Update To: centos-announce(a)centos.org Message-ID: <20130424214025.GA11173(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2013:0770 Important Upstream details at : https://rhn.redhat.com/errata/RHSA-2013-0770.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: f0e4f5abc8fedd6049cbb1ab6e317cac11b3296b26ae1d9f58b297bddb7386c8 java-1.6.0-openjdk-1.6.0.0-1.61.1.11.11.el6_4.i686.rpm 7db7a4cdaae3401e023dbab6b6234c93bdc0b2be55f7b7eec04f9b1af7e8934a java-1.6.0-openjdk-demo-1.6.0.0-1.61.1.11.11.el6_4.i686.rpm 2249e1fa98dd5ce90ab84fdefea3e3a384b24ef5139578fd8f8f95dbbddcfaaf java-1.6.0-openjdk-devel-1.6.0.0-1.61.1.11.11.el6_4.i686.rpm 7e30bb8802ea40548ec644296601dd7a07e848d7a1e6173899ccae658f208071 java-1.6.0-openjdk-javadoc-1.6.0.0-1.61.1.11.11.el6_4.i686.rpm 34cffdbbdc8751405ca247d454ec168f8671d6aba939c45706343bdd759a0824 java-1.6.0-openjdk-src-1.6.0.0-1.61.1.11.11.el6_4.i686.rpm x86_64: 5773697374ad4c8594fca201b13116178ade74cb61fddbbb27ace06eaa299603 java-1.6.0-openjdk-1.6.0.0-1.61.1.11.11.el6_4.x86_64.rpm b3ddab1c0a6af4d72e3e884ff765f3bf9aa47623b6036ddef61755e99180886d java-1.6.0-openjdk-demo-1.6.0.0-1.61.1.11.11.el6_4.x86_64.rpm 679db4e355fda845b55ecfa49f0c3a217f1f45aaed2ecc3328677641c9b1d51a java-1.6.0-openjdk-devel-1.6.0.0-1.61.1.11.11.el6_4.x86_64.rpm a6d3bd05ed71a5ed821560ce21aa2373404696268860ed053121700fc57f5730 java-1.6.0-openjdk-javadoc-1.6.0.0-1.61.1.11.11.el6_4.x86_64.rpm 210a1a166fcc874bc5d69ba7de5326fe038a4bf4d4e20b2f0cc543a4f48ae829 java-1.6.0-openjdk-src-1.6.0.0-1.61.1.11.11.el6_4.x86_64.rpm Source: 08373e3935516488a8e8147f07343422147843a7e37ad7390a7f08f4e1fefc0b java-1.6.0-openjdk-1.6.0.0-1.61.1.11.11.el6_4.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 3 Date: Wed, 24 Apr 2013 20:52:14 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CESA-2013:0771 Moderate CentOS 5 curl Update To: centos-announce(a)centos.org Message-ID: <20130424205214.GA7754(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2013:0771 Moderate Upstream details at : https://rhn.redhat.com/errata/RHSA-2013-0771.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 0823086dc15665444fe2911729dc7d26a0de1a6567ba179806e250da70a23616 curl-7.15.5-16.el5_9.i386.rpm 7c1c018454062a5fe2c1cbc2dd11e744bdb68d6f0a5ca8727653a759eff59f31 curl-devel-7.15.5-16.el5_9.i386.rpm x86_64: 0823086dc15665444fe2911729dc7d26a0de1a6567ba179806e250da70a23616 curl-7.15.5-16.el5_9.i386.rpm a52f6ab24fdf5040f471acdf4ea76539ff89b9df174e48382f5a1f86cf32df8c curl-7.15.5-16.el5_9.x86_64.rpm 7c1c018454062a5fe2c1cbc2dd11e744bdb68d6f0a5ca8727653a759eff59f31 curl-devel-7.15.5-16.el5_9.i386.rpm dc5e6a872c3e6919b4ef2f4f7374468adb73a1d78344bf703ed6ab2b73c81a61 curl-devel-7.15.5-16.el5_9.x86_64.rpm Source: 53052af3134267c0de03fba15a91f07f7bcabb5122dc9c1c20d9a684594aee57 curl-7.15.5-16.el5_9.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 4 Date: Wed, 24 Apr 2013 20:56:24 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CESA-2013:0770 Important CentOS 5 java-1.6.0-openjdk Update To: centos-announce(a)centos.org Message-ID: <20130424205624.GA7918(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2013:0770 Important Upstream details at : http://rhn.redhat.com/errata/RHSA-2013-0770.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 7b5f6f30bceffad70d7d2da2911aa559e2cd8cccb13dff64a69274d8295ae12f java-1.6.0-openjdk-1.6.0.0-1.40.1.11.11.el5_9.i386.rpm c035d2713a216e32467f2625f4b1e6997f369c4dc605d3a8270fab9a5622d948 java-1.6.0-openjdk-demo-1.6.0.0-1.40.1.11.11.el5_9.i386.rpm 8cf45396eddade803c234422d4cfabd101f74c1925d9ff9c6f4b55a2d1ffb472 java-1.6.0-openjdk-devel-1.6.0.0-1.40.1.11.11.el5_9.i386.rpm bd3ef2b30d647ab81a9821cf9698ce2fa90425cf8bf4c04eb98b768ac7062949 java-1.6.0-openjdk-javadoc-1.6.0.0-1.40.1.11.11.el5_9.i386.rpm f1e1479b4bec6efea7d3ad204c04826f2c22abe9ea95af82b5e94b79543049ea java-1.6.0-openjdk-src-1.6.0.0-1.40.1.11.11.el5_9.i386.rpm x86_64: e014c499dd894ac13e8cc80b15f1956942308059d4c9052a2070fa66c8fa3ed7 java-1.6.0-openjdk-1.6.0.0-1.40.1.11.11.el5_9.x86_64.rpm 856b860fd1ac7313da97e7f3badd4d8c89ace40d845e3c53a1c873558ae19fce java-1.6.0-openjdk-demo-1.6.0.0-1.40.1.11.11.el5_9.x86_64.rpm 175de3bf35b5d5b8056fca134c9a7ffdb42382c73088a255e83d9255d93b38df java-1.6.0-openjdk-devel-1.6.0.0-1.40.1.11.11.el5_9.x86_64.rpm 03f3d8403a834907eaaf853e14ec90f2659ed104ea50e0d979377dd9eb798e53 java-1.6.0-openjdk-javadoc-1.6.0.0-1.40.1.11.11.el5_9.x86_64.rpm 19d223fb9421c693a0a175bd78ea874e131ea7b92ed1084f9d5e16b79963db65 java-1.6.0-openjdk-src-1.6.0.0-1.40.1.11.11.el5_9.x86_64.rpm Source: 3924dde4c77371a2cc1f774733801e9a3c6a032f1eb090233a2818bed5b70304 java-1.6.0-openjdk-1.6.0.0-1.40.1.11.11.el5_9.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 5 Date: Wed, 24 Apr 2013 21:58:40 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CESA-2013:0769 Low CentOS 5 glibc Update To: centos-announce(a)centos.org Message-ID: <20130424215840.GA11387(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2013:0769 Low Upstream details at : https://rhn.redhat.com/errata/RHSA-2013-0769.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: d0d14824cdf608570ead3bdef8dd4e320c6d1a6b57b7c48b47f48c1c58968629 glibc-2.5-107.el5_9.4.i386.rpm 84a7629fe51a9ca0ad28fbbfbfb8a86bfd261aca1bf3e6e8010f73c5bed94c7d glibc-2.5-107.el5_9.4.i686.rpm 7c065848df215d97d249b2e47597b6b25f5112bdf4943811a71f96159ea35474 glibc-common-2.5-107.el5_9.4.i386.rpm 56f53d7f9b24cfc3897d515173688a87d507c95fadc7e4b7836d91a855ef4264 glibc-devel-2.5-107.el5_9.4.i386.rpm 09fefecf1e5f7954cddb58617033b1bbfc9ce8b366c57db58abd53aec7783c12 glibc-headers-2.5-107.el5_9.4.i386.rpm 9cc58c97e06b0ce97f8e6950e3b6789cf958c0b9647a38d09d4d535cbbf60b0c glibc-utils-2.5-107.el5_9.4.i386.rpm 9f1797efbad47dcb2a741fb33fc3f0d27cff1a1f4e6e801c2a0265f678c72a4e nscd-2.5-107.el5_9.4.i386.rpm x86_64: 84a7629fe51a9ca0ad28fbbfbfb8a86bfd261aca1bf3e6e8010f73c5bed94c7d glibc-2.5-107.el5_9.4.i686.rpm b731b929e823707aea8c9d22839b98207fae231facb4e2424ac98c2847d71b9f glibc-2.5-107.el5_9.4.x86_64.rpm fc8ce28321d041dd4f62204bd8b66e668767114abb71d98886f27a9a37cd4a55 glibc-common-2.5-107.el5_9.4.x86_64.rpm 56f53d7f9b24cfc3897d515173688a87d507c95fadc7e4b7836d91a855ef4264 glibc-devel-2.5-107.el5_9.4.i386.rpm 7314d2717b75d45dae1b8542ba7bf8b7d5dc6e5c61a68f3a9e7e025d5bba546a glibc-devel-2.5-107.el5_9.4.x86_64.rpm 6c16a8e1c611f54244fd80eef86155feb3c57e6c09d73fded857ca57f50af6d4 glibc-headers-2.5-107.el5_9.4.x86_64.rpm ef93816047585e81a693b34db46539ebe4eb84c6391dae03e83f3fe062f61a7e glibc-utils-2.5-107.el5_9.4.x86_64.rpm 65ae9daedf0b8388c5ac27038993a83c3fbcb7152894965d16b4105e945b5659 nscd-2.5-107.el5_9.4.x86_64.rpm Source: 905c8c41659c8e020f6f602232dfc9d1f8424e966a6ebc4300037d713ae47e9c glibc-2.5-107.el5_9.4.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #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 98, Issue 13 ***********************************************

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Re: [CentOS] r-x and r-x.
by Johan Vermeulen 25 Apr '13

25 Apr '13

:-) In this context " I ' run your backup when.... verzonden m.b.v Android vandaar de beknoptheid. John R Pierce <pierce(a)hogranch.com>schreef: >On 4/25/2013 3:57 AM, James Hogarth wrote: >> I suspect there is no boolean to allow what you want so if you want selinux >> enabled you'll need to build a module - look at audit2allow and the various >> guides surrounding that for how to use > >and you wonder why people give up on selinux. 'sorry, boss.. I'll get >that TPC report out just soon as I debug this selinux audit module...' > > > >-- >john r pierce 37N 122W >somewhere on the middle of the left coast > >_______________________________________________ >CentOS mailing list >CentOS(a)centos.org >http://lists.centos.org/mailman/listinfo/centos

1 0

Anybody Else Seeing these internet spikes?
by John Hinton 25 Apr '13

25 Apr '13

Is anybody else seeing these internet spikes that seemed to come along with the WP bots? And, what are good methods for defense? It looks like they are hitting port 80 but not leaving a trace in logs. -- John Hinton 877-777-1407 ext 502 http://www.ew3d.com Comprehensive Online Solutions

2 1

Writing to a symlink on a read-only file system that land on a read-write file system
by James Pearson 25 Apr '13

25 Apr '13

We've come across a problem with 6.4 kernels that we didn't have with 6.2 kernels - which involves writing to a symlink that is on a read-only file system - but the symlink lands on a read-write file system The following shows the issue: mkdir -p /mnt/tmp mount -t tmpfs -o size=1% none /mnt/tmp rm -f /tmp/file ln -s /tmp/file /mnt/tmp/file mount -o remount,ro /mnt/tmp echo "some text" > /mnt/tmp/file On a machine with a 6.2 kernel, the above works fine - the target of the symlink (/tmp/file) is created etc. with no error But on a machine with a 6.4 kernel, the above fails with: /mnt/tmp/file: Read-only file system. Strace'ing a process that fails gives: open("/mnt/tmp/file", O_WRONLY|O_CREAT|O_TRUNC, 0666) = -1 EROFS (Read-only file system) I don't have a machine with a 6.3 kernel, so I'm not sure when the change in behaviour happened, but does anyone know as to why this change was made in the kernel? I've had a look through the kernel changelog - and the following entry mentions EROFS and read-only file systems: - [fs] vfs: prefer EEXIST to EROFS when creating on an RO filesystem (Eric Sandeen) [878091] I can't access that BZ (878091) entry - so don't know if the above is anything to do with what I'm seeing ... Thanks James Pearson

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