Discuss June 2013

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152 participants
130 discussions

IPv4 192.168.71.1 'leaks out onto WAN.
by James B. Byrne 07 Jun '13

07 Jun '13

Arch = x86_64 OS = CentOS-6.4 (centos) with all updates applied to date. On our gateway host eth0 is the WAN access and eth1 is the LAN. I wish to activate the address 192.185.71.1 on eth1. The ifcfg-eth1:192071 file contains this: NAME="" BOOTPROTO=none MACADDR="" IPV6INIT=no DEVICE=eth1:192071 NETMASK=255.255.255.0 MTU="" BROADCAST=192.168.71.255 ONPARENT=no IPADDR=192.168.71.1 NETWORK=192.168.71.0 ONBOOT=no When I try ifup to activate the address then I see this: # ifup eth1:192071 Error, some other host already uses address 192.168.71.1. I investigated what that host could be using nmap -v -APn 192.168.71.1/32 and discovered that my gateway host is allowing 192.168.71.0 out through eth0 onto the WAN (and presumably anything else that it originates). Presently we masquerade 192.168.0.0/16 in a NAT POSTROUTING chain which handles the internal hosts seeking addresses on the WAN. However, I am unsure of how to handle the gateway itself. Is this situation best handled by a permanent route reflecting 192.168 to eth1 only? Or, is it handled better by an addition to the OUTPUT chain in the NAT IPTable? Or, is the best method something else entirely of which I am unaware? Any suggestions? -- *** 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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Unable to ping google... but can ping bing...
by Yves S. Garret 07 Jun '13

07 Jun '13

Hello all, this is what happens when I attempt to ping both search engines: http://bin.cakephp.org/view/168484871 One has 100% packet loss, the other none. Here is my route -n: http://bin.cakephp.org/view/219711338 Also, this is my iptables -L output: http://bin.cakephp.org/view/2102713387 This is a 64-bit virtual machine running on Azure, OpenLogic CentOS 6.3. If more info is needed, I'll gladly provide it, but I don't understand why I can't ping google... very weird...

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Can someone explain this?
by Robert Heller 07 Jun '13

07 Jun '13

Installed version of doxygen (stock CentOS 5.9): Name : doxygen Relocations: (not relocatable) Version : 1.4.7 Vendor: CentOS Release : 2 Build Date: Mon 11 Jun 2012 04:50:22 AM EDT Install Date: Fri 07 Jun 2013 12:14:55 PM EDT Build Host: builder10.centos.org Group : Development/Tools Source RPM: doxygen-1.4.7-2.src.rpm Size : 6518061 License: GPL Signature : DSA/SHA1, Mon 11 Jun 2012 07:12:14 AM EDT, Key ID a8a447dce8562897 URL : http://www.stack.nl/~dimitri/doxygen/index.html Summary : A documentation system for C/C++. Description : Doxygen can generate an online class browser (in HTML) and/or a reference manual (in LaTeX) from a set of documented source files. The documentation is extracted directly from the sources. Doxygen can also be configured to extract the code structure from undocumented source files. Updated version I built (I need the newer version for a project I am working on): Name : doxygen Relocations: (not relocatable) Version : 1.7.4 Vendor: Dimitri van Heesch Release : 1 Build Date: Thu 07 Mar 2013 03:35:19 PM EST Install Date: (not installed) Build Host: sauron.deepsoft.com Group : Development/Tools Source RPM: doxygen-1.7.4-1.src.rpm Size : 12551071 License: GNU General Public License Signature : DSA/SHA1, Thu 07 Mar 2013 03:44:05 PM EST, Key ID 2c1dec90653a4d80 Packager : Robert Heller <heller(a)deepsoft.com> URL : http://www.stack.nl/~dimitri/doxygen/index.html Summary : A documentation system for C/C++. Description : Doxygen can generate an online class browser (in HTML) and/or a reference manual (in LaTeX) from a set of documented source files. The documentation is extracted directly from the sources. Doxygen can also be configured to extract the code structure from undocumented source files. This is what rpm -hUv /extra/heller/src/RPMS/x86_64/doxygen-1.7.4-1.x86_64.rpm tells me: Preparing... ################################################## package doxygen-1.4.7-2.x86_64 (which is newer than doxygen-1.7.4-1.x86_64) is already installed So a package built in June of *last year*, with an lower version number is newer than a package built in March of this year? In which universe is RPM living in? -- Robert Heller -- 978-544-6933 / heller(a)deepsoft.com Deepwoods Software -- http://www.deepsoft.com/ () ascii ribbon campaign -- against html e-mail /\ www.asciiribbon.org -- against proprietary attachments

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Strange messages after installing Quad-core processor
by Robert Heller 07 Jun '13

07 Jun '13

After installing a Phenom II X4 processor (replacing a single core Semperon) I am getting these messages on the console and in dmesg: Warning Timer ISR/2: Time went backwards: delta=-250135996 delta_cpu=13864004 shadow=1355887856733 off=870052783 processed=1357008044419 cpu_processed=1356744044419 0: 1357004044419 1: 1356696044419 2: 1356744044419 3: 1356696044419 printk: 41 messages suppressed. Warning Timer ISR/1: Time went backwards: delta=-59982686 delta_cpu=4017314 shadow=1360903191494 off=777060324 processed=1361740044419 cpu_processed=1361676044419 0: 1361740044419 1: 1361676044419 2: 1361676044419 3: 1361656044419 printk: 44 messages suppressed. Warning Timer ISR/1: Time went backwards: delta=-1411977595 delta_cpu=480022405 shadow=1365903272832 off=72983745 processed=1367388044419 cpu_processed=1365496044419 0: 1367384044419 1: 1365496044419 2: 1365552044419 3: 1365552044419 printk: 46 messages suppressed. Warning Timer ISR/3: Time went backwards: delta=-131987583 delta_cpu=56012417 shadow=1370651436789 off=820810871 processed=1371604044419 cpu_processed=1371416044419 0: 1371600044419 1: 1371444044419 2: 1371444044419 3: 1371416044419 printk: 31 messages suppressed. Warning Timer ISR/2: Time went backwards: delta=-27979896 delta_cpu=20020104 shadow=1375888162629 off=588093398 processed=1376504044419 cpu_processed=1376456044419 0: 1376504044419 1: 1376460044419 2: 1376456044419 3: 1376456044419 printk: 47 messages suppressed. Warning Timer ISR/1: Time went backwards: delta=-207976755 delta_cpu=60023245 shadow=1380903513990 off=672744302 processed=1381784044419 cpu_processed=1381516044419 0: 1381784044419 1: 1381516044419 2: 1381516044419 3: 1381500044419 printk: 49 messages suppressed. Warning Timer ISR/2: Time went backwards: delta=-628613448 delta_cpu=135386552 shadow=1384888283123 off=959350632 processed=1386476044419 cpu_processed=1385712044419 0: 1386476044419 1: 1385624044419 2: 1385712044419 3: 1385712044419 printk: 60 messages suppressed. Warning Timer ISR/2: Time went backwards: delta=-559977270 delta_cpu=240022730 shadow=1390888386502 off=47871477 processed=1391496044419 cpu_processed=1390696044419 0: 1391496044419 1: 1390820044419 2: 1390696044419 3: 1390696044419 The machine *appears* to be running fine. Are these messages something I need to worry about? I am running Xen and kernel 2.6.18-348.3.1.el5xen on the DOM0 (host) VM under CentOS 5.9. I just popped in the new processor -- should I have changed a BIOS setting or something? Boot params: title CentOS (2.6.18-348.3.1.el5xen) root (hd0,0) kernel /xen.gz-2.6.18-348.3.1.el5 dom0_mem=3072M module /vmlinuz-2.6.18-348.3.1.el5xen ro root=/dev/mapper/sauron-c5root 8250.nr_uarts=8 xencons=off max_loop=32 irqpoll module /initrd-2.6.18-348.3.1.el5xen.img -- Robert Heller -- 978-544-6933 / heller(a)deepsoft.com Deepwoods Software -- http://www.deepsoft.com/ () ascii ribbon campaign -- against html e-mail /\ www.asciiribbon.org -- against proprietary attachments

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CentOS-announce Digest, Vol 100, Issue 4
by centos-announce-request＠centos.org 07 Jun '13

07 Jun '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. CEBA-2013:0902 CentOS 5 gfs2-utils Update (Johnny Hughes) 2. CEBA-2013:0906 CentOS 6 libXcursor FASTTRACK Update (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Thu, 6 Jun 2013 14:55:49 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CEBA-2013:0902 CentOS 5 gfs2-utils Update To: centos-announce(a)centos.org Message-ID: <20130606145549.GA20506(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2013:0902 Upstream details at : https://rhn.redhat.com/errata/RHBA-2013-0902.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: b87816b3a9f7e2296a4f37734f4022008924477a37b3a2c925c248e02c700c8a gfs2-utils-0.1.62-37.el5_9.i386.rpm x86_64: e3548e06b31f7e8b87a2c22e279d60d5898b08d7aefb65606d25ee4dc532dd95 gfs2-utils-0.1.62-37.el5_9.x86_64.rpm Source: 8b7e25caef270f80995f79f421e2afa56f4e5afb8279c7e4690cc3dac9d64105 gfs2-utils-0.1.62-37.el5_9.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 2 Date: Thu, 6 Jun 2013 16:01:40 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CEBA-2013:0906 CentOS 6 libXcursor FASTTRACK Update To: centos-announce(a)centos.org Message-ID: <20130606160140.GA59929(a)n04.lon1.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2013:0906 Upstream details at : https://rhn.redhat.com/errata/RHBA-2013-0906.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 9f34fead8e4cafae4a3c63134448db911816b7dd53ddab99eae1b4c4398571cf libXcursor-1.1.13-6.20130524git8f677eaea.el6.i686.rpm c96c55d2aa63c35e8b688122efc2701ac394a0b85a9f60887d9e717566805d91 libXcursor-devel-1.1.13-6.20130524git8f677eaea.el6.i686.rpm x86_64: 9f34fead8e4cafae4a3c63134448db911816b7dd53ddab99eae1b4c4398571cf libXcursor-1.1.13-6.20130524git8f677eaea.el6.i686.rpm e315a89c6be5a9c3e3f843877d36f283462fefeb5db92b5817e4115950924a30 libXcursor-1.1.13-6.20130524git8f677eaea.el6.x86_64.rpm c96c55d2aa63c35e8b688122efc2701ac394a0b85a9f60887d9e717566805d91 libXcursor-devel-1.1.13-6.20130524git8f677eaea.el6.i686.rpm 935fdc954cee2ca37933d6a0c977fdc8003cbc69222e35915b3575b9ff51c813 libXcursor-devel-1.1.13-6.20130524git8f677eaea.el6.x86_64.rpm Source: 46d5159f52f6bdfb6a677b57fa91ca81510eb7f43a5de74ebf92ed0d60cf9ba0 libXcursor-1.1.13-6.20130524git8f677eaea.el6.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 100, Issue 4 ***********************************************

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Facebook group needs help with newbie member questions
by Ljubomir Ljubojevic 07 Jun '13

07 Jun '13

Hi all. A represent Official CentOS group on Facebook: https://www.facebook.com/groups/2371797727/ Recently we have grown to 3.240+ members, and it looks like we are now more visible since we reached 3000+ members. In last 7 days we had 131 new members ~19 per day, mostly newbie's with problems. Since I am only active admin/knowledgeable person in the group, I am under big load. Karanbir and Ralph try to help, but I am mostly alone "out there" So if any of you are willing to answer to newbie questions and maybe add to our howto documents, you are more then welcome. Be warned that it is imperative to be polite to them, since Facebook users are more spoiled then others, but I think it is one of the best way to popularize CentOS among the newbie population that is deciding what distro to choose for it's main distro. Just sending them to wiki, forums or here is not really an option since most of them will not bother with registering, they would most likely just find some inadequate howto on the net, mainly not even for rpm distro but explaining how to manually download and compile packages :-/ Again, I believe that grooming newbie's on Facebook can be great for CentOS popularization, since General Linux group has 36.000+ members (and 244 new members in last 7 days at the moment). I can not offer you admin status, but those well known to CentOS team can be promoted by Karanbir. -- -- Ljubomir Ljubojevic (Love is in the Air) PL Computers Serbia, Europe StarOS, Mikrotik and CentOS/RHEL/Linux consultant

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selinux
by m.roth＠5-cent.us 07 Jun '13

07 Jun '13

Two issues: first, I've noticed a number of times that selinux is there, which we usually have in permissive, but setroubleshoot is *not* installed. Is there be some kind of dependency or group that it should be part of that's missing? I don't see why I need to manually install it.... Second - and I thought I knew the answer to this, but guess I don't - I see AVC's in the log file, but no sealerts - how do I start it up to give me them in messages? I see auditd is running.... mark

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Cert RHCSA
by Fidel Dominguez 07 Jun '13

07 Jun '13

Hello everyone I'm already on the training to get the certification on RHCSA. and I wondered if someone has a guide or something else from where to study. Thks Fidel Dominguez

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Cannot get Centrino N 6200 wireless NIC to work Cento 6.4
by Selwyn Schultz Sr 06 Jun '13

06 Jun '13

I installed Centos 6.4 on my laptop and neither of the network interfaces will work. When I boot up to windows both the wired and the wireless network interfaces work. I have attached dmesg output for the wireless card. Reading through the messages it appears that OS cannot talk to the NIC. -- Selwyn Schultz selwynsr(a)gmail.com c. 616-836-8896

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Network performance issue on CentOS 6 KVM
by linuxsupport 06 Jun '13

06 Jun '13

Hi All, I am using CentOS 6.4 on 4 servers, guests are also CentOS 6.4 Network is setup using virtio, and vhost, this works well but sometime I see connection issue from application to DB. I found that sometimes latency increases from 0.200 ms approx to 123ms or even more sometimes, this happens only for 1-2 packets but keep happening after sometime. CPU load remains under 1, CPU usages is around 20-30%. If I ping from host machine to host machine then there is consistent latency, this only happens when ping from a guest machine to either other guest machines or a host machine. Did anyone face similar issue?

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Discuss June 2013