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Lustre 2.7.0
by Ben Archuleta 22 Dec '15

22 Dec '15

Hello All, I need to get a Lustre 2.7.0 system running from scratch and I was wondering if anyone knows what the most current version of CentOS with Lustre support is server-wise. As I poke around the documentation it looks like CentOS 6.3, 6.4, and possibly 6.5 are supported. Regards, Ben J. Archuleta Systems Staff Center for Advanced Research Computing (CARC)

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CentOS and typical usage
by Alice Wonder 21 Dec '15

21 Dec '15

I share some of the frustration with Fedora developers "not listening" but I don't share all of the frustration. As far as customizing CentOS / Fedora for server vs desktop vs laptop vs whatever, to me that is a moot issue. In the server environment you almost certainly are using a virtual machine, and to use a virtual machine you create an image. Set up the image how you want and be done with it, you can then deploy it thousands of times and it is set up the way you need it. I typically use the default image provided by Linode - it is a good image for a server, just remember to install the yum-cron package and enable the firewall. I was one of the systemd haters initially but now I don't have an issue with it. Yes it is different than what I learned, but once I stopped yelling at the kids to get off my damn lawn, it wasn't that hard to figure out what I needed to do to get systemd to work for me instead of me working against it. Gnome is the only place where I have serious issue with the direction Fedora is going. I loved Gnome 2 but hate Gnome 3 with a passion. I tried to love it, but I just can't. They took away my vertical scroll bars. I understand most people scroll with a mouse wheel, but it is really hard to do that from my T series thinkpads. The solution they gave me in the forums involved needing to write some CSS stuff - no gui checkbox, I had to create a CSS file. And even that didn't fully work, some applications still didn't have scroll bars. Apparently that's because they weren't "ported" to the newer gtk or something. But if that's the case, where adding the CSS won't bring the scroll thing back, then they shouldn't lose it. Fonts - they look horrible to me in Gnome 3 and no setting I could figure out made them look good. Graphics - moving stuff around the desktop really taxed my built-in video, what use to be smooth was often choppy, especially on my Thinkpad T410. Totem - for the life of me I couldn't figure out how to get it to not be full screen. Switched to mate and all those issues instantly went away. Gnome3 I think is an area where the Fedora developers are refusing to listen, but that isn't really an issue because they do package Mate and Mate is in EPEL so I can install it in CentOS and be done with it. But things like systemd, wireless drivers, etc. - there, I don't think there is a good argument because it is easy to set up a system and make an image that you then use as your base for creating new VMs for the server. As someone who uses CentOS on the desktop quite a bit, I am glad that RHEL / CentOS does pay attention to the needs of use desktop users. I use to use CentOS on the server and Fedora on the desktop, and then, RHEL/CentOS as a server OS made sense to me. But Fedora is too bleeding edge for my liking now, and CentOS is the Linux distribution I recommend for desktop use. So no, I don't think it should target servers at the expense of the desktop users. Just my two cents, don't mean to stir the pot, just giving my opinion.

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CentOS-7.2 USB stick problem
by Timothy Murphy 21 Dec '15

21 Dec '15

I've installed CentOS-7-x86_64-LiveKDE-1503.iso and CentOS-7-x86_64-LiveKDE-1511.iso on two USB sticks. The first boots up in 90 seconds, but the second takes almost 7 minutes. (I'm talking about the time until my laptop becomes usable.) After 5 minutes a small window comes up saying it cannot save bookmarks because it does not have permission in the required directory. I assume the delay is a timeout, perhaps due to SELinux? Once it has started up it seems to run properly. I wondered if anyone else has encountered this? I'll try installing the minimal version of CentOS-7.2 on the USB stick and see if that is better. -- Timothy Murphy gayleard /at/ eircom.net School of Mathematics, Trinity College, Dublin

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Centos DVD -
by Bob Goodwin 21 Dec '15

21 Dec '15

I have been trying to run Centos 6 and 7 in virtualbox on this Fedora23 computer. Actually I also tried Scientific Linux and a DVD copy of Fedora 21 XFCE Live that I had on hand. The Fedora21 works as expected but I seem to be missing something in Centos and Scientific Linux. They boot and run with a text screen but startx reports "command not found" and a ping to other than localhost, reports network unreachable. So I assume I am missing something. The virtualbox version is 5.0.10 r104061. And Centos was downloaded a few days ago and should be the latest available. Any help is appreciated, Bob -- Bob Goodwin - Zuni, Virginia, USA http://www.qrz.com/db/W2BOD box10 FEDORA-23/64bit LINUX XFCE POP3

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/bin/nmcli and connection names
by Eugene Vilensky 21 Dec '15

21 Dec '15

Hi, I haven't been to find this (NetworkManager) change documented. On: CentOS Linux release 7.1.1503 (Core) $ /bin/nmcli con NAME UUID TYPE DEVICE ens32 7629e52d-bd42-4cd5-a424-8c58e7e0bf37 802-3-ethernet ens32 On: CentOS Linux release 7.2.1511 (Core) $ /bin/nmcli con NAME UUID TYPE DEVICE System ens32 0c299aec-b628-4168-b3c7-5b00951f5eb8 802-3-ethernet ens32 The string "System " is part of the NAME. What might be my options to understand upstream's reasoning for this change and any possible workaround?

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Dealing with MS Outlook winmail.dat on Linux mail server
by Valeri Galtsev 21 Dec '15

21 Dec '15

Dear All, Does someone do anything on your Linux (or UNIX) mail servers to convert darn proprietary MS Outlook winmail.dat attachments your users may receive (occasionally if lucky) into readable e-mail format. I know quick answer to my question (good quick answer would probably be: just trash them). Still, being involuntarily immersed into corporate world (even at Educational institution), I'd like to know what clever and wise people do. I can refer my users to some free online converters and get over with that. The only thing that makes me think about potentially investing more effort into dealing with this garbage is: google mail just seamlessly shows users such e-mails with all contents. And I'm really reluctant to quietly outsource services we were providing on our servers to google. Thanks in advance for all your advises and input. Valeri ++++++++++++++++++++++++++++++++++++++++ Valeri Galtsev Sr System Administrator Department of Astronomy and Astrophysics Kavli Institute for Cosmological Physics University of Chicago Phone: 773-702-4247 ++++++++++++++++++++++++++++++++++++++++

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Re: [CentOS] [CentOS-announce] Announcing release for MariaDB 5.5 and 10.0 on CentOS Linux 6 x86_64 SCL
by Always Learning 21 Dec '15

21 Dec '15

On Mon, 2015-12-21 at 17:20 +0100, Honza Horak wrote: > I am pleased to announce the immediate availability of versions 5.5 and > 10.0 of the MariaDB server on CentOS Linux 6 x86_64, delivered via a > Software Collection (SCL) built by the SCLo Special Interest Group > (https://wiki.centos.org/SpecialInterestGroup/SCLo) What is the difference (for C6 usage) between RH/C SCL's version of Maria 10 and that offered directly from Maria ? Thanks. -- Regards, Paul. England, EU. England's place is in the European Union.

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boost-openmpi problems in 7.2
by Pete Biggs 21 Dec '15

21 Dec '15

After the 7.2 upgrade boost-openmpi-1.53.0-25 was installed, along with openmpi-1.10.0-10. The old openmpi was then replaced with compat- openmpi16-1.6.4-10. All fine. Except boost-openmpi has a dependency on the old libmpi.so.1 and the new openmpi has libmpi.so.12: # ldd libboost_mpi-mt.so.1.53.0 linux-vdso.so.1 => (0x00007ffe8c182000) libboost_serialization-mt.so.1.53.0 => /lib64/libboost_serialization-mt.so.1.53.0 (0x00007f39da4d2000) libmpi.so.1 => not found libmpi_cxx.so.1 => /usr/lib64/openmpi/lib/libmpi_cxx.so.1 (0x00007f39da2b6000) librt.so.1 => /lib64/librt.so.1 (0x00007f39da0ae000) libstdc++.so.6 => /lib64/libstdc++.so.6 (0x00007f39d9da5000) libm.so.6 => /lib64/libm.so.6 (0x00007f39d9aa3000) libgcc_s.so.1 => /lib64/libgcc_s.so.1 (0x00007f39d988d000) libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f39d9670000) libc.so.6 => /lib64/libc.so.6 (0x00007f39d92af000) libmpi.so.12 => /usr/lib64/openmpi/lib/libmpi.so.12 (0x00007f39d8fcc000) libopen-rte.so.12 => /usr/lib64/openmpi/lib/libopen-rte.so.12 (0x00007f39d8d4f000) libopen-pal.so.13 => /usr/lib64/openmpi/lib/libopen-pal.so.13 (0x00007f39d8aac000) libdl.so.2 => /lib64/libdl.so.2 (0x00007f39d88a8000) libutil.so.1 => /lib64/libutil.so.1 (0x00007f39d86a4000) libhwloc.so.5 => /lib64/libhwloc.so.5 (0x00007f39d8476000) /lib64/ld-linux-x86-64.so.2 (0x00007f39da987000) libnuma.so.1 => /lib64/libnuma.so.1 (0x00007f39d8269000) libpciaccess.so.0 => /lib64/libpciaccess.so.0 (0x00007f39d805f000) libxml2.so.2 => /lib64/libxml2.so.2 (0x00007f39d7cf6000) libz.so.1 => /lib64/libz.so.1 (0x00007f39d7adf000) liblzma.so.5 => /lib64/liblzma.so.5 (0x00007f39d78ba000) We have tried switching to using compat-openmpi - but then the programs don't find the boost library. There are other ways around it (setting the LD_LIBRARY_PATH variable or putting in symlinks so things are found), but they seem to throw segfaults with the code. Presumably this is just a packaging/compiling error - is there anyway to trigger an update for the boost-openmpi package? Pete

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AUTO: Sergio Luis Chavarria Cisneros is out of the office (returning 26/12/2015)
by slchavarria＠iusacell.com.mx 21 Dec '15

21 Dec '15

I am out of the office until 26/12/2015. Estaré ausente de la oficina, para cualquier apoyo que necesites favor de contactar a Edson Cota Email: edson.cota(a)nextel.com.mx Note: This is an automated response to your message "CentOS Digest, Vol 131, Issue 21" sent on 12/21/2015 6:00:02 AM. This is the only notification you will receive while this person is away. “Este mensaje y cualquier archivo que se adjunte al mismo es propiedad de GRUPO IUSACELL y podría contener información privada y privilegiada para uso exclusivo del destinatario. Si usted ha recibido esta comunicación por error, no está autorizado para copiar, retransmitir, utilizar o divulgar este mensaje ni los archivos adjuntos. En este caso por favor notifique inmediatamente al remitente por este mismo conducto. Gracias.”

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does centos have this grub2 issue?
by Wes James 21 Dec '15

21 Dec '15

I saw this today: http://linux.slashdot.org/story/15/12/16/040223/0-day-grub2-authentication-… I installed a grub2 update in 7.2 yesterday. Did the update fix this? -wes

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