Discuss September 2017

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128 participants
123 discussions

System shutdown on OOM
by Thomas Plant 26 Sep '17

26 Sep '17

Hello all, had an issue on with a virtualmachine on XenServer 7.0 yesterday. It is a Centos 7.4.1708 and in a OOM situation it just shut down. No kernel panic where I could see a message, but it just turned itself off. All I could see in the /var/log/messages was the following: ------------------------------------------------------------------------ Sep 24 03:11:08 hostname xe-daemon: Running CollectDisk ... Sep 24 03:11:21 hostname kernel: httpd invoked oom-killer: gfp_mask=0x280da, order=0, oom_score_adj=-1000 Sep 24 03:11:22 hostname kernel: httpd cpuset=/ mems_allowed=0 Sep 24 03:11:22 hostname kernel: CPU: 0 PID: 31557 Comm: httpd Not tainted 3.10.0-514.21.1.el7.x86_64 #1 Sep 24 03:11:22 hostname kernel: Hardware name: Xen HVM domU, BIOS 4.6.1-xs125300 05/09/2016 Sep 24 03:11:22 hostname kernel: ffff88000d9eb000 0000000023d5076e ffff8800120f3a78 ffffffff81686f13 Sep 24 03:11:22 hostname kernel: ffff8800120f3b08 ffffffff81681ebe ffffffff812aee5b ffff88003bf85910 Sep 24 03:11:22 hostname kernel: ffff88003bf85928 ffffffff00000206 fbfeefff00000000 0000000000000007 Sep 24 03:11:22 hostname kernel: Call Trace: Sep 24 03:11:22 hostname kernel: [<ffffffff81686f13>] dump_stack+0x19/0x1b Sep 24 03:11:22 hostname kernel: [<ffffffff81681ebe>] dump_header+0x8e/0x225 Sep 24 03:11:22 hostname kernel: [<ffffffff812aee5b>] ? cred_has_capability+0x6b/0x120 Sep 24 03:11:22 hostname kernel: [<ffffffff8113d203>] ? delayacct_end+0x73/0xb0 Sep 24 03:11:22 hostname kernel: [<ffffffff81184cfe>] oom_kill_process+0x24e/0x3c0 Sep 24 03:11:22 hostname kernel: [<ffffffff8118479d>] ? oom_unkillable_task+0xcd/0x120 ------------------------------------------------------------------------ Anybody seen this before? Is there a way to configure it so that it does a reboot instead of a shutdown? Greetings, Thomas

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VNC into CentOS 7.4
by Jerry Geis 26 Sep '17

26 Sep '17

When I VNC into 7.4 everything is fine until I run vmplayer (VMware). The vmplayer runs but when I type on the console for vmplayer which is also running a centos image I get multiple key presses - sometimes. Its not everytime - but enough to be annoying. How do I take care of that ? Jerry

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gtk3 update causing havoc
by Paul Johnson 25 Sep '17

25 Sep '17

On my lab systems, the automatic updates were failing because of the problems with ipod libraries from EPEL being in the way. It turns out that was a good thing, because when I "fixed" it, a massive set of packages was updated, including the new gtk3. These packages are the ones causing problems, I think. gtk3-3.22.10-4.el7.x86_64 gtk3-devel-3.22.10-4.el7.x86_64 In the release notes, there is mention of the "giant icon" problem and how to fix that. We understand that part. The bad problem I see now is that Emacs and Chromium-browser, which rely on gtk3 don't work properly anymore. In Emacs, the symptom is that the ribbon of buttons under the pull down menu will no longer show. In Chromium, the buttons and other widget things on the top are an ugly yellow distortion. I've recompiled the Emacs that comes with EL7, as well as 24.5, and the Emacs behaves the same way, no buttons show. The buttons are invisible, but still there. If you click in there, you can get lucky. Do you see it too in Emacs? I see some posts that say the Gnome themes don't work any more with GTK and those themes should have been deprecated by the gtk3 packages. I don't think the theme is the cause because I see same problem in both Gnome and XFCE4 desktops. I see it also if I SSH into the machine and run emacs forwarded over X11. I just realized that on Ubuntu I'm running gtk-3.22.11 with Emacs 24.5 and the icons do show. Maybe there is a change in the compiler flag for Emacs that I'm missing. pj -- Paul E. Johnson http://pj.freefaculty.org Director, Center for Research Methods and Data Analysis http://crmda.ku.edu To write to me directly, please address me at pauljohn at ku.edu.

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7.4 network issues
by Alice Wonder 25 Sep '17

25 Sep '17

Two onboard nics, Intel, eno1 and eno2 If either of them is set to onboot then network won't start. one error message says :bad vendor preset disabled Another error message (in red) says Failed to start LSB If I can find a USB key there is an updated kmod-wl src.rpm that *may* bring up my wifi, but I am not sure I have access to a USB key at the moment. The motherboard is supermicro and the onboard nics are Intel which I thought were well supported, but I do remember going from 7.2 to 7.3 on a server IPv6 was bricked because of changes to how the /sbin/ifconfig scripts were configured. This one (is a xeon, server board, but its my desktop) I think started life as 7.2 and was at 7.3 before this update - in case there's a similar issue with incompatibilities with config file after update. I've not used the nics before, always just used wifi. What's the secret to getting them to connect via dhcp onboot at least long enough to try and get the broadcom wifi working again? -- -=- Sent my from my laptop, may not be able to respond timely

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Bricked my system
by Alice Wonder 25 Sep '17

25 Sep '17

Updated to CentOS 7.4 No wifi. The wifi was using wl-something driver that had third party firmware but it wasn't seen. Attempted to get network with ethernet from the mobo to router but it wouldn't come up. So I rebuilt the wl-whatever kernel module and installed the updated version built against the newer kernel. Now when attempting to boot it gets stuck at "i8042 no controller found" and stops. That message is always there, either lack of serial port or lack of PS/2 ports - I forget - but the boot now hangs there. It's caused by the wl-whatever kmod update I tried trying to get network back, but I can't remove that rpm if I can't boot. Help. -- -=- Sent my from my laptop, may not be able to respond timely

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yum groupinstall vs. yum group install
by Nicolas Kovacs 25 Sep '17

25 Sep '17

Hi, Is there a difference between 'yum groupinstall' and 'yum group install'? As far as I can tell, # yum groupinstall "X Window System" and # yum group install "X Window System" get me the same result. Just curious. Niki -- Microlinux - Solutions informatiques durables 7, place de l'église - 30730 Montpezat Web : http://www.microlinux.fr Mail : info(a)microlinux.fr Tél. : 04 66 63 10 32

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Re: [CentOS] [Slightly OT] Use CentOS to create a bootable Mac OS X DVD from dmg file?
by Nicolas Kovacs 25 Sep '17

25 Sep '17

Le 23/09/2017 à 19:36, Remik.ca a écrit : > If you are just upgrading, you don't need to burn any DVDs. Just mount the dmg and run the included installer. > > You'd only need to burn the DVD if you wanted to wipe the MBP and do a clean install. > > Or - use Recovery Mode and do entire macOS installation over the internet, no boot DVDs required, just internet access (wired of wifi). It will download the OS files directly from Apple servers and install on the local machine. > file:///home/kikinovak/ISO/CentOS/CentOS-7-x86_64-LiveKDE-1708 Long story short, I can't seem to upgrade this thing. But the good news is, I've booted a few Linux Live CDs, and I think I'll just replace Mac OS X with CentOS 7, if possible. Anyone here with experience on installing CentOS on a MacBook Pro? This model is from 2009. As far as I know (correct me if I'm wrong), Apple hardware always uses EFI. What can I expect? Flawless installation or countless hours of suffering due to completely unexpected problems? Cheers, Niki -- Microlinux - Solutions informatiques durables 7, place de l'église - 30730 Montpezat Web : http://www.microlinux.fr Mail : info(a)microlinux.fr Tél. : 04 66 63 10 32

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upgrade or install to Centos 7.4.1708
by Pete Geenhuizen 25 Sep '17

25 Sep '17

I upgraded from 7.3 to 7.4 over the weekend. Everything went well except that I can't login because the screen is black with a cursor. If reboot boot the 7.3 kernel 3.10.0-514.26.2.el7.x86_64 kernel everything works just fine, so my guess is that there's a kernel issue with the hardware, specifically the Skylake processor. Has anyone else run into this problem and if so can how I resolve the problem other than using the previous kernel? ASUSTeK COMPUTER INC. Z170M-PLUS VGA compatible controller: Intel Corporation HD Graphics 530 (rev 06) Intel(R) Core(TM) i5-6600K CPU @ 3.50GHz Skylake Any help with this would be greatly appreciated. Pete -- Unencumbered by the thought process. -- Click and Clack the Tappet brothers -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.

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Re: [CentOS] vmplayer for linux 12.5.7 on CentOS 7.4 (Jerry Geis)
by pro alias 24 Sep '17

24 Sep '17

The answer is to recompile the source tarball with a patch which appeared at: https://communities.vmware.com/message/2686431?tstart=0#2686431 generously provided by https://communities.vmware.com/people/dariusd . Tried it and it works swimmingly.

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more selinux problems ...
by hw 24 Sep '17

24 Sep '17

Hi, how do I allow lighttpd access to a directory like this: dr-xrwxr-x. lighttpd example unconfined_u:object_r:samba_share_t:s0 files_articles I tried to create and install a selinux module, and it didn´t work. The non-working module can not be removed, either: semodule -r lighttpd-files_articles.pp libsemanage.semanage_direct_remove_key: Unable to remove module lighttpd-files_articles.pp at priority 400. (No such file or directory). semodule: Failed! Currently, only read access is required. Write access may be required later. type=AVC msg=audit(1506168999.456:2350): avc: denied { getattr } for pid=28956 comm="lighttpd" path="/srv/data/files_articles/C3E3FC7C-6ABE-11E6-9BF7-9CD580EF3FB5" dev="sde" ino=22694488368 scontext=system_u:system_r:httpd_t:s0 tcontext=unconfined_u:object_r:samba_share_t:s0 tclass=file type=SYSCALL msg=audit(1506168999.456:2350): arch=c000003e syscall=4 success=yes exit=0 a0=55eea817ec80 a1=7ffe668ef300 a2=7ffe668ef300 a3=7ffe668ef270 items=0 ppid=1 pid=28956 auid=4294967295 uid=996 gid=994 euid=996 suid=996 fsuid=996 egid=994 sgid=994 fsgid=994 tty=(none) ses=4294967295 comm="lighttpd" exe="/usr/sbin/lighttpd" subj=system_u:system_r:httpd_t:s0 key=(null) type=AVC msg=audit(1506168999.456:2351): avc: denied { open } for pid=28956 comm="lighttpd" path="/srv/data/files_articles/C3E3FC7C-6ABE-11E6-9BF7-9CD580EF3FB5" dev="sde" ino=22694488368 scontext=system_u:system_r:httpd_t:s0 tcontext=unconfined_u:object_r:samba_share_t:s0 tclass=file type=SYSCALL msg=audit(1506168999.456:2351): arch=c000003e syscall=2 success=yes exit=9 a0=55eea817ec80 a1=0 a2=3e a3=7ffe668ef270 items=0 ppid=1 pid=28956 auid=4294967295 uid=996 gid=994 euid=996 suid=996 fsuid=996 egid=994 sgid=994 fsgid=994 tty=(none) ses=4294967295 comm="lighttpd" exe="/usr/sbin/lighttpd" subj=system_u:system_r:httpd_t:s0 key=(null) type=AVC msg=audit(1506168723.591:2342): avc: denied { read } for pid=28956 comm="lighttpd" name="C3E3FC7C-6ABE-11E6-9BF7-9CD580EF3FB5" dev="sde" ino=22694488368 scontext=system_u:system_r:httpd_t:s0 tcontext=unconfined_u:object_r:samba_share_t:s0 tclass=file type=SYSCALL msg=audit(1506168723.591:2342): arch=c000003e syscall=2 success=no exit=-13 a0=55eea817ec80 a1=0 a2=3e a3=7ffe668ef2a0 items=0 ppid=1 pid=28956 auid=4294967295 uid=996 gid=994 euid=996 suid=996 fsuid=996 egid=994 sgid=994 fsgid=994 tty=(none) ses=4294967295 comm="lighttpd" exe="/usr/sbin/lighttpd" subj=system_u:system_r:httpd_t:s0 key=(null) Why isn´t there a simple way to allow access to files as needed? Being like this, selinux is entirely unmanagable. Does it even do any more good than it keeps getting in the way?

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Discuss September 2017