Discuss May 2015

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140 participants
131 discussions

Using Mariadb databases from old server
by Timothy Murphy 01 Jun '15

01 Jun '15

I'm running CentOS-7, but I left some MySQL databases on my old CentOS-6.5 partition which I'd like to retrieve. I assume they are contained in the file /var/lib/mysql/ibdata1 ? Could I just copy this file to /var/lib/mysql in CentOS-7? Or is there some way Mariadb or phpMyAdmin can import mysql databases from a server that is no longer running? -- Timothy Murphy gayleard /at/ eircom.net School of Mathematics, Trinity College, Dublin

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gcc34 from centos 6 install on CentOS 7
by Jerry Geis 30 May '15

30 May '15

is there any issue with installing the compat-gcc34 package from centos 6 on centos 7 ? Thanks, jerry

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Re: [CentOS] EPEL metalink offline?
by Richard 30 May '15

30 May '15

------------ Original Message ------------ > Date: Friday, May 29, 2015 11:08:50 PM +0200 > From: Tim <lists(a)kiuni.de> > > Hey guys, > > is EPEL metalink offline? > > Could not get metalink > https://mirrors.fedoraproject.org/metalink?repo=epel-7&arch=x86_64 > error was 14: curl#6 - "Could not resolve host: > mirrors.fedoraproject.org" > > Everything else works for me. > > Regards > Tim This works fine for me, and the DNS for mirrors.fedoraproject.org looks fine too -- points to the cname wildcard.fedoraproject.org., which resolves to 8 A-records, with 60sec TTLs (for my US/east coast location). Did you check to see what your DNS is showing? - Richard

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VNC Server Centos 7 specify window manager
by samphar 30 May '15

30 May '15

I have a simple question, how do I specify a gnome session with VNc Server. I correctly setup up the connections but when I log in all I get is a blue screen with a checkbox in the upper left corner saying "Accept clipboard from viewers". My guess is that I am loading generuc X11 by default. How do I specify in the etc/systemd/system/vncserver@:4.service file that I want it to load gnome? I tried editing my .vnc/xstartup file but that seems to have no effect. my xstartup file #!/bin/sh exec gnome-session & ~

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EPEL metalink offline?
by Tim 29 May '15

29 May '15

Hey guys, is EPEL metalink offline? Could not get metalink https://mirrors.fedoraproject.org/metalink?repo=epel-7&arch=x86_64 error was 14: curl#6 - "Could not resolve host: mirrors.fedoraproject.org" Everything else works for me. Regards Tim

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Getting Megaraid Software Manager Installed On CentOS 7
by Kirk Bocek 29 May '15

29 May '15

Well I'm pleased that my raid card post brought all the enthusiasts out of the woodwork. So who has installed LSI's MSM software under CentOS 7? I've downloaded the linux-x64 package from: http://www.lsi.com/products/raid-controllers/pages/megaraid-sas-9361-8i.aspx Extracted the files and run "install.csh -a". This installs vivaldiframeworkd under /etc/rc.d/init.d and that runs fine. I can access the host from a Windows install of MSM just fine. What seems to missing is the monitoring software. I think the run-time script is called mr_monitor. It doesn't seem to be installed. Attempts to configure monitor alerts from Windows returns "monitor is unreachable." Does anyone have any idea what is going on?

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Re: [CentOS] CentOS 7 selinux policy bug
by Daniel J Walsh 29 May '15

29 May '15

On 05/29/2015 09:20 AM, m.roth(a)5-cent.us wrote: > Hi, folks, > > CentOS 7.1. Selinux policy, and targetted, updated two days ago. > > May 28 17:02:41 <servername> python: SELinux is preventing /usr/bin/bash > from execute access on the file /usr/bin/bash.#012#012***** <...> > May 28 17:02:45 <servername> python: SELinux is preventing /usr/bin/bash > from execute access on the file /usr/bin/uname.#012#012***** <...> > May 28 17:02:45 <servername> python: SELinux is preventing /usr/bin/uname > from execute_no_trans access on the file /usr/bin/uname.#012#012***** > <...> > May 28 17:02:47 <servername> python: SELinux is preventing /usr/bin/bash > from execute access on the file /usr/bin/mailx.#012#012***** <...> > > I did do an ll =Z /usr/bin, and everything looks correct > (system_u:object_r:bin_t:s0). Given that, looks to me like a policy bug. > No? Yes? File a bug report? > > mark > > -- > selinux mailing list > selinux(a)lists.fedoraproject.org > https://admin.fedoraproject.org/mailman/listinfo/selinux What is the avc that you are seeing? ausearch -m avc -ts recent

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CentOS 7 selinux policy bug
by m.roth＠5-cent.us 29 May '15

29 May '15

Hi, folks, CentOS 7.1. Selinux policy, and targetted, updated two days ago. May 28 17:02:41 <servername> python: SELinux is preventing /usr/bin/bash from execute access on the file /usr/bin/bash.#012#012***** <...> May 28 17:02:45 <servername> python: SELinux is preventing /usr/bin/bash from execute access on the file /usr/bin/uname.#012#012***** <...> May 28 17:02:45 <servername> python: SELinux is preventing /usr/bin/uname from execute_no_trans access on the file /usr/bin/uname.#012#012***** <...> May 28 17:02:47 <servername> python: SELinux is preventing /usr/bin/bash from execute access on the file /usr/bin/mailx.#012#012***** <...> I did do an ll =Z /usr/bin, and everything looks correct (system_u:object_r:bin_t:s0). Given that, looks to me like a policy bug. No? Yes? File a bug report? mark

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Booting back into CentOS-6
by Timothy Murphy 29 May '15

29 May '15

I'm currently running CentOS-7, but I'd like to re-boot into CentOS-6.5 which I have on another partition. Although this OS is in the grub list when I boot, if I try to run it I get a segfault. I guess this is something to do with the change from grub to grub2? In any case, I'm wondering if there is any simple way of booting into both CentOS-6 and CentOS-7? -- Timothy Murphy gayleard /at/ eircom.net School of Mathematics, Trinity College, Dublin

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Re: [CentOS] Booting back into CentOS-6
by philburt stortsky 29 May '15

29 May '15

This, IMHO, is one of the more annoying bugs with the newer GRUB (which i assume is the bootloader you are using). Specifically the newer grub can't, won't boot from a drive other than the one grub is on. suggest you revert to grub 0.97 or, if any boot loader is or can be put on the drive with the 6.5 distro you can make that drive the boot drive in the bios, which is how i do it. i.e. i just put grub on any drive i might want to boot from and install etc. with the drive i want to be able to boot to set as the boot drive in the bios. of course, depending on how you are mounting drives this may break links etc. since the bios will have different names for the drives due to the different order of the boot media list in the bios. hope that helps, it is highly annoying. "We kill when we close our eyes to poverty, affliction or infamy. We kill when, because it is easier, we countenance or pretend to approve of atrophied social, political, educational and religious institutions instead of resolutely combating them." - Hesse > Message: 13 > Date: Fri, 29 May 2015 02:23:44 +0100 > From: Timothy Murphy <gayleard(a)eircom.net> > To: centos(a)centos.org > Subject: [CentOS] Booting back into CentOS-6 > Message-ID: <mk8f30$lf1$1(a)ger.gmane.org> > Content-Type: text/plain; charset="ISO-8859-1" > > I'm currently running CentOS-7, > but I'd like to re-boot into CentOS-6.5 > which I have on another partition. > Although this OS is in the grub list when I boot, > if I try to run it I get a segfault. > I guess this is something to do with the change from grub to grub2? > > In any case, I'm wondering if there is any simple way > of booting into both CentOS-6 and CentOS-7? > > -- > Timothy Murphy > gayleard /at/ eircom.net > School of Mathematics, Trinity College, Dublin > > > > > ------------------------------ > > Message: 14 > Date: Fri, 29 May 2015 02:52:53 +0100 > From: Timothy Murphy <gayleard(a)eircom.net> > To: centos(a)centos.org > Subject: [CentOS] Using Mariadb databases from old server > Message-ID: <mk8gpm$ea1$1(a)ger.gmane.org> > Content-Type: text/plain; charset="ISO-8859-1" > > I'm running CentOS-7, but I left some MySQL databases > on my old CentOS-6.5 partition which I'd like to retrieve. > I assume they are contained in the file /var/lib/mysql/ibdata1 ? > > Could I just copy this file to /var/lib/mysql in CentOS-7? > Or is there some way Mariadb or phpMyAdmin can import mysql databases > from a server that is no longer running? > > -- > Timothy Murphy > gayleard /at/ eircom.net > School of Mathematics, Trinity College, Dublin > > > > > ------------------------------ > > Message: 15 > Date: Thu, 28 May 2015 19:55:41 -0700 > From: Gordon Messmer <gordon.messmer(a)gmail.com> > To: CentOS mailing list <centos(a)centos.org> > Subject: Re: [CentOS] New controller card issues > Message-ID: <5567D52D.5060108(a)gmail.com> > Content-Type: text/plain; charset=windows-1252; format=flowed > > On 05/28/2015 03:02 PM, Valeri Galtsev wrote: > > > > If I get you correctly you are saying that 3ware RAID cards are prone to > > hardware failures - as opposed to software RAID which is not (as it does > > not include hardware, so never has a hardware failures), right? No this is > > a joke of course. But it's the one one asked for ;-) > > Software RAID uses whatever controller the disks are connected to. > Often, that's the AHCI controller on the motherboard. And those > controllers are almost always more reliable than 3ware. Seriously. No > joke. > > > Again, I don't know your statistics: i.e. how many did you use, > > Hundreds of systems, both with 3ware and with software RAID. > > > how many > > of them died (failed as hardware). > > Not many, but some. A handful of data corruption cases (maybe 5? I > don't have logs). One BBU failure that resulted in a system that > wouldn't boot until it was removed (and a couple of hours down time > while 3ware techs worked that ticket). A couple of times when we really > wanted to move an array of disks and couldn't. > > Vs zero reliability issues with software RAID. > > > How well surge-free the power is. > > We always used trusted UPS hardware. > > > How > > well the guys who installed your cards into your boxes followed static > > discharge precautions > > Our systems were built by a professional VAR. Employees always wore > ground straps. There were other anti-static measures in place as well. > I had been to the facility. > > And I'll throw you a curveball: > > I've argued that software RAID is more reliable than 3ware cards, > specifically. In the world of ZFS and btrfs, you absolutely should not > use hardware RAID. As you mentioned earlier, hardware RAID volumes > should scan disks regularly. However, scanning only tells you if disks > have bad sectors. It can also detect data (parity) errors, but it can't > repair them. Hardware RAID cards don't have information that can tell > them which sectors are correct. ZFS and btrfs, on the other hand, > checksum their data and metadata. They can tell which sectors are > damaged in the case of corruption such as bit flips, and which sector > should be used to repair the data. > > Now, btrfs and ZFS are completely different from software RAID. I'm not > comparing the two. But hardware RAID simply has too many deficiencies > to justify its continued use. It should go away. > > > ------------------------------ > > Message: 16 > Date: Thu, 28 May 2015 21:22:45 -0700 > From: Keith Keller <kkeller(a)wombat.san-francisco.ca.us> > To: centos(a)centos.org > Subject: Re: [CentOS] New controller card issues > Message-ID: <l56l3cxekb.ln2(a)goaway.wombat.san-francisco.ca.us> > Content-Type: text/plain; charset=us-ascii > > On 2015-05-28, Valeri Galtsev <galtsev(a)kicp.uchicago.edu> wrote: > > > > I do use both LSI and 3ware. > > Both are now owned by Avago. (Not sure when that happened, last I > looked LSI was its own company.) > > > For me big advantage of 3ware is transparent > > interface. By which I mean web interface. There is command line interface > > for both and 3ware command line interface may be less confusing for me. > > I find the 3ware CLI a little clunky but easy to understand. I find the > LSI CLIs (both MegaCLI and storcli) incredibly confusing, and the GUI > interface is not intuitive (and I think doesn't expose all the > information about the controller; the Nagios LSI plugin found errors > that I could find no trace of in the GUI). > > > Sorry for long comment. I did feel 3ware deserves more respect than one > > might draw from this thread otherwise. > > Agreed; I'll share some of my experiences in another post. > > --keith > > -- > kkeller(a)wombat.san-francisco.ca.us > > > > > ------------------------------ > > Message: 17 > Date: Thu, 28 May 2015 21:36:31 -0700 > From: Keith Keller <kkeller(a)wombat.san-francisco.ca.us> > To: centos(a)centos.org > Subject: Re: [CentOS] New controller card issues > Message-ID: <fv6l3cx8ub.ln2(a)goaway.wombat.san-francisco.ca.us> > Content-Type: text/plain; charset=us-ascii > > On 2015-05-28, Valeri Galtsev <galtsev(a)kicp.uchicago.edu> wrote: > > > > Now, seriously: of more than a couple of dozens of cards I used during > > last about 13 years not a single one died on me. > > I have had a couple dozen hardware RAID controllers over the years. I > have not had the success you've had, but I've had very few hard > failures. I have had one data loss event, where a bad BBU was causing > problems with an old controller (of course I had backups, as should > everyone). I've had two other controllers just die, but replacing it > was easy, and the new controller recognized the arrays immediately. > This includes moving two different disk arrays from two different 9650s > to two different 9750s, so whoever wrote that arrays are not compatible > across different models is at least partly incorrect. > > I do also have an LSI controller, which has been fine, but it's only one > controller so it's not enough data points to draw any conclusions. I also > have an md RAID array (on a very old 3ware controller which doesn't > support RAID6), and it's also been fine. It hasn't suffered through any > major catastrophes, though I do think it's had one or two fatal kernel > panics, and once or twice had a hard reset done. It's still fine even > with a small number of really crappy "green" drives still in the array > (I learned that lesson the hard way--don't use green drives with a hardware > RAID controller!). > > --keith > > -- > kkeller(a)wombat.san-francisco.ca.us > > > > > ------------------------------ > > Message: 18 > Date: Fri, 29 May 2015 08:32:47 +0300 > From: Todor Petkov <zakk(a)online.bg> > To: CentOS mailing list <centos(a)centos.org> > Cc: Timothy Murphy <gayleard(a)eircom.net> > Subject: Re: [CentOS] Using Mariadb databases from old server > Message-ID: <62128b8c308448402a65c2b760d4d88c(a)online.bg> > Content-Type: text/plain; charset=US-ASCII; format=flowed > > On 29/05/2015 04:52 AM, Timothy Murphy wrote: > > I'm running CentOS-7, but I left some MySQL databases > > on my old CentOS-6.5 partition which I'd like to retrieve. > > I assume they are contained in the file /var/lib/mysql/ibdata1 ? > > > > Could I just copy this file to /var/lib/mysql in CentOS-7? > > Or is there some way Mariadb or phpMyAdmin can import mysql databases > > from a server that is no longer running? > > The C6 partition is part of the new server, so you are able to mount it > and copy files from it, is this correct? Have you done something with > the MariaDB or it's still clean installation? > > > > ------------------------------ > > Message: 19 > Date: Fri, 29 May 2015 09:45:24 +0200 > From: G?tz Reinicke - IT Koordinator <goetz.reinicke(a)filmakademie.de> > To: CentOS <centos(a)centos.org> > Subject: [CentOS] NSS Tools certutil buggy ? Centos 6 nss-tools-3.18.0 > Message-ID: <55681914.1040504(a)filmakademie.de> > Content-Type: text/plain; charset="utf-8" > > Hi, > > I try to add a certificate to a fresh certificate db, but the trust > attributes are not set as expected. Neither can I change tham. > > The cert/pem is valid and double checked :) > > > Any idea/suggestion? > > > certutil -N -d certdb-test > > certutil -A -n "foobar" -t "u,u,u" -d certdb-test/ -i foobar.pem > > certutil -L -d certdb-test/ > > > Certificate Nickname Trust Attributes > SSL,S/MIME,JAR/XPI > foobar ,, > > > > certutil -M -n "foobar" -t "u,u,u" -d /tmp/certdb-test/ > > > certutil -L -d certdb-test/ > > Certificate Nickname Trust Attributes > SSL,S/MIME,JAR/XPI > foobar ,, > > > > > > Thanks and regards . G?tz > > -- > G?tz Reinicke > IT-Koordinator > > Tel. +49 7141 969 82 420 > E-Mail goetz.reinicke(a)filmakademie.de > > Filmakademie Baden-W?rttemberg GmbH > Akademiehof 10 > 71638 Ludwigsburg > www.filmakademie.de > > Eintragung Amtsgericht Stuttgart HRB 205016 > > Vorsitzender des Aufsichtsrats: J?rgen Walter MdL > Staatssekret?r im Ministerium f?r Wissenschaft, > Forschung und Kunst Baden-W?rttemberg > > Gesch?ftsf?hrer: Prof. Thomas Schadt > > > ------------------------------ > > Message: 20 > Date: Fri, 29 May 2015 12:00:07 +0100 > From: Timothy Murphy <gayleard(a)eircom.net> > To: centos(a)centos.org > Subject: Re: [CentOS] Using Mariadb databases from old server > Message-ID: <mk9gro$pq3$1(a)ger.gmane.org> > Content-Type: text/plain; charset="ISO-8859-1" > > Todor Petkov wrote: > > >> I'm running CentOS-7, but I left some MySQL databases > >> on my old CentOS-6.5 partition which I'd like to retrieve. > >> I assume they are contained in the file /var/lib/mysql/ibdata1 ? > >> > >> Could I just copy this file to /var/lib/mysql in CentOS-7? > >> Or is there some way Mariadb or phpMyAdmin can import mysql databases > >> from a server that is no longer running? > > > > The C6 partition is part of the new server, so you are able to mount it > > and copy files from it, is this correct? Have you done something with > > the MariaDB or it's still clean installation? > > I did add something to Mariadb on the new CentOS-7 system, > but I don't mind deleting it and starting again. > I can mount the partition with the old mysql files on it. > Could I just copy the contents of /mnt/var/lib/mysql > to the new system? > There are files with the same name, eg ibdata1, on both systems. > Could I have an ibdata2 ? > > Any suggestions gratefully received. > > -- > Timothy Murphy > gayleard /at/ eircom.net > School of Mathematics, Trinity College, Dublin > > > > > ------------------------------ > > _______________________________________________ > CentOS mailing list > CentOS(a)centos.org > http://lists.centos.org/mailman/listinfo/centos > > > End of CentOS Digest, Vol 124, Issue 29 > *************************************** >

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Discuss May 2015