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CentOS-6 reboots
by James B. Byrne 26 Oct '15

26 Oct '15

I am now in receipt of an update to qemu-img and qemu-kvm. My practice up to now has been to restart the virtual host after applying qemu updates. This in turn implies that all of the virtual guests on that host also will need restarting since suspending them takes much, much longer than a restart. The issue of whether or not the requirement to reboot servers based on CentOS was increasing or not was recently raised. My question then: Is a restart of the host following applying these updates actually necessary? If not then what is the procedure to get them to take effect on existing virtual guests? -- *** e-Mail is NOT a SECURE channel *** Do NOT transmit sensitive data via e-Mail 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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semi-OT: HW
by m.roth＠5-cent.us 26 Oct '15

26 Oct '15

Running CentOS 6.7, on an older HP DL580 G5. We've got a Dell 12-bay RAID box plugged into a PERC H800 (aka LSI Liberator) that we put in the HP, and that works fine. We've got a new RAID (a JetStor), and are trying to plug it in. The layout is that the Dell RAID is dual-pathed DAS. Each PERC has two DAS ports. We've got the Dell RAID in the top port of each PERC. I *thought* I could just plug the new RAID, which also has two ports, into the bottom two ports on the PERC. TRied rescanning the SCSI bus, /sys/class/scsi_host/host[0-5]/scan, with no apparent sight of the new RAID. Can I do this the way I've got it, or do I need to daisy-chain the new RAID through the old RAID? mark

3 5

virt-manager
by John R Pierce 26 Oct '15

26 Oct '15

so... I've been tinkering with KVM again. my desktop is windows, the linux server is remote, so I have a ssh X tunnel running, and XMing running locally, and launch virt-manager. opens fine, shows the VM I created some time ago. I select that VM (which is running centos 6), and 'open', a window opens for a few seconds, then blam, virt-manager exits before I can click on the 'details' lightbulb. if I run virt-manager --debug, I get the following output after clicking on 'open'... 2015-10-22 16:08:36,377 (engine:471): window counter incremented to 2 2015-10-22 16:08:36,379 (console:1150): Starting connect process for proto=vnc trans=None connhost=localhost connuser=None connport=None gaddr=127.0.0.1 gport=5900 gsocket=None 2015-10-22 16:08:36,381 (console:378): VNC connecting to localhost:5900 2015-10-22 16:08:37,009 (console:1061): Viewer connected [xcb] Extra reply data still left in queue [xcb] This is most likely caused by a broken X extension library [xcb] Aborting, sorry about that. python: xcb_io.c:576: _XReply: Assertion `!xcb_xlib_extra_reply_data_left' failed. Aborted (core dumped) -- john r pierce, recycling bits in santa cruz

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Crash in gnome-terminal on New Profile
by Leonard den Ottolander 26 Oct '15

26 Oct '15

Hi, Anyone else seeing this? C7 Gnome Desktop, opened a gnome-terminal, click File -> New Profile and gnome-terminal-server gets killed. Regards, Leonard. -- mount -t life -o ro /dev/dna /genetic/research

2 2

how to unrar
by Michael Hennebry 25 Oct '15

25 Oct '15

I'm looking for a means to unrar some files. Google keeps giving references to rmpforge which I'm told I ought not use. Any other ideas? I'm running centos 6. -- Michael hennebry(a)web.cs.ndsu.NoDak.edu "Sorry but your password must contain an uppercase letter, a number, a haiku, a gang sign, a heiroglyph, and the blood of a virgin." -- someeecards

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Re: PHP version not enough for developers
by Nicholas Geovanis 24 Oct '15

24 Oct '15

Yamaban wrote: >The mess we have now, is not the work of just one change. >What was the rationale to get udev into boot? -- Handling the ever >changing mess of plugable, switchable hardware. Not born and bred >for servers, but for mobiles (phones, tablets, laptops). >Who was the one that decided that "one-size-fits-all" and put that >into server environment? IMHO agreed. I believe that there is a perceived convergence of "needs" between (call it...) more-mobile personal linux and _virtualised_ server linux. If we can create a linux VM in under 5 minutes, "we" expect that it will boot-up without the sys admin's intervention. Then "we" expect that we can migrate it to newer hardware without manual reconfiguration. But returning to PHP: If apps are developed without real separation between user interface and back-end, then the back-end will be victimised by the relative and inherent instability of the front-end. The web servers then really become part of the front-end and must be handled as such. I would argue that this lack of separation between front-end and web server is a feature of the WWW and its protocols, we cannot escape it. So no surprise that most data centers leave the web servers outside or mostly-outside the network perimeter.

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OpenSSL and OpenSSH on CentOS (FIPS enabled)
by Ning Liu (niliu2) 24 Oct '15

24 Oct '15

Hi experts, Current I am doing FIPS gap analysis for our product, can someone help to have a look my questions? Our product is server running under CentOS 6.x, and according to the upstream (RedHat) document, CentOS can be configured to FIPS mode: https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/ht… And according to the CentOS forum, if we enabled FIPS mode on CentOS, then OpenSSL will also be in FIPS mode https://www.centos.org/forums/viewtopic.php?t=9078 Questions: (1) Is that true for OpenSSL ? (2) How about OpenSSH, since we are using SSH for administration, but there is not too much document mentioning OpenSSH Vs. FIPS. But looks like REDHAT already takes care of OpenSSH: https://www.redhat.com/en/about/press-releases/red-hat-completes-fips-1402-… Can I assume that OpenSSH is in FIPS mode when CentOS is in FIPS mode ? Regards, Ning Liu

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CentOS-announce Digest, Vol 128, Issue 8
by centos-announce-request＠centos.org 24 Oct '15

24 Oct '15

Send CentOS-announce mailing list submissions to centos-announce(a)centos.org To subscribe or unsubscribe via the World Wide Web, visit https://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 qemu-kvm-ev from Virtualization SIG (Karanbir Singh) 2. Release for Software Collections SIG content (Karanbir Singh) ---------------------------------------------------------------------- Message: 1 Date: Fri, 23 Oct 2015 16:50:25 +0100 From: Karanbir Singh <kbsingh(a)centos.org> To: CentOS Announcements List <centos-announce(a)centos.org> Subject: [CentOS-announce] Release for qemu-kvm-ev from Virtualization SIG Message-ID: <562A5741.1050404(a)centos.org> Content-Type: text/plain; charset=utf-8 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I am pleased to announce the immediate availability of qemu-kvm-ev stack for CentOS Linux 7/x86_64. This release is delivered by the work done in the CentOS Virtualization Special Interest Group. In order to use this qemu-kvm version, on an updated CentOS Linux 7/x86_64 machine, you should run: yum install centos-release-qemu-ev yum install qemu-kvm-ev This will bring in all the dependencies needed, including the updated qemu-img tools. This stack is curated as a part of the CentOS Virtualization SIG. You can find more details about this group, including the technologies they are bring to CentOS at their page https://wiki.centos.org/SpecialInterestGroup/Virtualization . This group meetings every alternate Tuesday in #centos-devel on irc.freenode.net, details for the meetings can be found on their SIG pag e. We welcome participation in this group from anyone interested in virtualization and technologies associated with it. Feel free to drop into our list at https://lists.centos.org/mailman/listinfo/centos-virt and say hi. Thanks to Sandro Bonazzola from the oVirt team for building and maintaining this qemu-kvm-ev stack. - -- Karanbir Singh, Project Lead, The CentOS Project +44-207-0999389 | http://www.centos.org/ | twitter.com/CentOS GnuPG Key : http://www.karan.org/publickey.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQEcBAEBAgAGBQJWKldBAAoJEI3Oi2Mx7xbtb3gIAIIF7If9daApI0cZtRPCLNC+ fz6FPpWd/OyBOkyXHFtREp32voR16eq0EMowW8P+mLAB5YJ6iauMfv7vDTHJWAnw n3/x2MSHMsSiRCUUDnLAJHBqqJ4X1YUsNkbHE/f+Vb7AF9w2fuQE7BBUJsjGY5tQ 9V1SIkVSdzaYy2tps7Y6b9iHBk5zpMiWnFdMKfW/QTSoLp9wpi+0jlwx7aebHRAK y1tEIljDEgwSF85IkGkNtah1LGjhiB1J4aseewjKw2azsQ1z41fh4MFnujvPXSbj 40aJoRDcLvtXtaHB5dMMXOeMFkaki4iJxH5GV3H32sGfrLm+7ZuH3n397rfuAvk= =aU1U -----END PGP SIGNATURE----- ------------------------------ Message: 2 Date: Fri, 23 Oct 2015 16:59:11 +0100 From: Karanbir Singh <kbsingh(a)centos.org> To: CentOS Announcements List <centos-announce(a)centos.org> Subject: [CentOS-announce] Release for Software Collections SIG content Message-ID: <562A594F.4020704(a)centos.org> Content-Type: text/plain; charset=utf-8 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 The Software Collections SIG group is pleased to announce a way of Software Collections packages availability for CentOS Linux users. The Software Collections packages have been build in CentOS Build System [1] and will be available soon on CentOS mirrors. Collections will be released in stacks, as we test and validate them. With Software Collections provided by SCLo SIG, users of CentOS Linux as well as other SIG groups in the CentOS ecosystem will be able to use the latest versions of popular application stacks, databases or other content mainly focused on developers. And they are able to do this without any impact to the system versions already installed on their machine. The SCLo SIG is not only meant to include packages rebuilt from Software Collections that have been made available in Red Hat Software Collections (RHSCL), but it is also meant to include updated content or collections that are not part of the RHSCL portfolio at all. So far, the collections rebuilt by SCLo SIG from RHSCL are devassist09, devtoolset-3, git19, httpd24, mariadb55, maven30, mongodb24, mysql55, nginx14, nginx16, nodejs010, perl516, php54, php55, postgresql92, python27, python33, rh-java-common, rh-mariadb100, rh-mongodb26, rh-mysql56, rh-passenger40, rh-perl520, rh-php56, rh-postgresql94, rh-python34, rh-ror41, rh-ruby22, ror40, ruby193, ruby200, thermostat1 and v8314. With Software Collections that are not part of RHSCL (so far sclo-vagrant1 collection), both CentOS Linux and RHEL users will be provided by content that is not available on those platforms otherwise. Getting started with Software collections: On an updated CentOS Linux 7/x86_64 machine run: yum install centos-release-scl This will enable the right repositories, and bring any metadata needed to validate the content. Learn more about Software Collections concepts at: http://softwarecollections.org/ You can find information on the SIG at https://wiki.centos.org/SpecialInterestGroup/SCLo this includes howto get involved and help with the effort. [1]: http://cbs.centos.org - -- Karanbir Singh, Project Lead, The CentOS Project +44-207-0999389 | http://www.centos.org/ | twitter.com/CentOS GnuPG Key : http://www.karan.org/publickey.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQEcBAEBAgAGBQJWKllPAAoJEI3Oi2Mx7xbtRL8H/2Xt2FVKc+z+GIv8FOZmujRv ou9OqR6UxusgWBPVBaIZ3HTTaVYRkbzt7VpbGcsbxeA6q98LyAonCOn1hoZv+d1x SaItfkDIbz7e4lln7YUvrgfuKlNAZ7kzTXGY301VndZQRV/jU3sf4JuUR9upO9qx J8jkKS+/1g0QP0LRATCafHlDd9PbIirASOmHcc47GyPQRD+683ulwiE7ADFw1gbP CTVlGnXzxnFoJGGO9ZKhV9L374nWMVBqOqIF7oGddrrQ2rmSzI8P7InVjv8cMXVa 78f54x/E7/0jBJe4S0T4Wgy6uHo7y2Al8hto3DOktXnUofaOxZ6v9kGA32Svlpc= =ace6 -----END PGP SIGNATURE----- ------------------------------ _______________________________________________ CentOS-announce mailing list CentOS-announce(a)centos.org https://lists.centos.org/mailman/listinfo/centos-announce End of CentOS-announce Digest, Vol 128, Issue 8 ***********************************************

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EFI netboot to kickstart install
by Grant Street 23 Oct '15

23 Oct '15

Hello All Up until now we have been using standard PXE boot to do kick start installs of centos boxes. With recent machines however they come by default as EFI boot. We can set them to legacy but I would like to solve this before this option goes away. Just wondering if anyone has any experience setting up a net boot server that can be used to kickstart EFI machines? Thanks Grant

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USB audio issues with 6.7
by John R Pierce 23 Oct '15

23 Oct '15

hmmm. my associate needs a USB sound thing in his stack... its always worked before, but when I brought him up on a new system with 6.7, the device is recognized.... usb 1-1: New USB device found, idVendor=08bb, idProduct=2704 usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 usb 1-1: Product: USB Audio DAC usb 1-1: Manufacturer: Burr-Brown from TI usb 1-1: configuration #1 chosen from 1 choice usb 1-1: ctrl urb status -75 received input: Burr-Brown from TI USB Audio DAC as /devices/pci0000:00/0000:00:01.2/usb1/1-1/1-1:1.2/input/input3 generic-usb 0003:08BB:2704.0001: input,hidraw0: USB HID v1.00 Device [Burr-Brown from TI USB Audio DAC ] on usb-0000:00:01.2-1/input2 and it shows up as... $ aplay -l **** List of PLAYBACK Hardware Devices **** card 0: I82801AAICH [Intel 82801AA-ICH], device 0: Intel ICH [Intel 82801AA-ICH] Subdevices: 1/1 Subdevice #0: subdevice #0 card 1: DAC [USB Audio DAC], device 0: USB Audio [USB Audio] Subdevices: 1/1 Subdevice #0: subdevice #0 but when he tries to connect to it, like with this test command... $ mpg123 -a hw:1,0 /audio/36790.mp3 Playing MPEG stream 1 of 1: 36790.mp3 ... [alsa.c:118] error: initialize_device(): cannot set hw params [audio.c:643] error: failed to open audio device [mpg123.c:547] error: failed to reset audio device: Broken pipe and I noted some kernel errors in dmesg... usb 1-1: cannot submit urb 0, error -22: internal error usb 1-1: cannot submit urb 0, error -22: internal error usb 1-1: cannot submit urb 0, error -22: internal error reading a random forum thread found via googling that error suggested someone else had this problem with 6.7 and reverted. I was running $ uname -a Linux kfat.com 2.6.32-573.7.1.el6.x86_64 #1 SMP Tue Sep 22 22:00:00 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux So, reverting to a older kernel fixed this, and it works fine. $ uname -a Linux kfat.com 2.6.32-431.17.1.el6.x86_64 #1 SMP Wed May 7 23:32:49 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux (I had a 6.5 rpm handy). any clues? Linux audio has always been a big black box to me. -- john r pierce, recycling bits in santa cruz

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