Discuss May 2017

discuss@lists.centos.org

112 participants
94 discussions

C6 Module Keys
by Ken Smith 21 May '17

21 May '17

Hello, As part of testing an alternative module I saved the original module and copied the test one in. The test was done and I put the original module back. Now the original module is not loading at startup and doing it manually I get the error WARNING: Error inserting {Module name & path } Required key not available. And in /var/log/messages shortly after boot I can see kernel: ksign: Installing public key data Loading keyring - Added public key D9FDC491F0A38D91 - User ID: CentOS (Kernel Module GPG key) and I also see ksign: module signed with unknown public key - signature keyid: 6aa10540a705b299 ver=4 Module signed with unknown public key Logged when I try to manually load the original module. Has something not loaded at startup? Or what??? Puzzled - any ideas Thanks Ken -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.

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yum error
by vychytraly . 21 May '17

21 May '17

Hello friends, today I encountered this issue on one of the centos machines, yesterday everything seemed woking normally: $ sudo yum update There was a problem importing one of the Python modules required to run yum. The error leading to this problem was: lIbgscaPi_krb .co.2: cannot open shared object file: No such file or directory Please install a package which provides this module, or verify that the module is installed correctly. It's possible that the above module doesn't match the current version of Python, which is: 2.7.5 (default, Nov 6 2016, 00:28:07) [GCC 4.8.5 20150623 (Red Hat 4.8.5-11)] If you cannot solve this problem yourself, please go to the yum faq at: http://yum.baseurl.org/wiki/Faq Im sure I did not overwrite any of the python packages, since I have protectbase configured. Please do you know what could be the problem? Thank you very much and have a nice day vychytraly

3 4

Google-chrome-stable
by Rob Kampen 21 May '17

21 May '17

Over the last week or so I have noticed that chrome fails to load pages - in fact even the setup pages do not load. Blow away the ~/.config/google-chrome/ files and restart Seems to work for a little while - then stops again - no other pages load. I have done the cleanup of the .config/google-chrome directory and then with the fresh session tried both with my google account and without any account - same result. I have just done an update in the hope it may fix things so now running Version 58.0.3029.110 (64-bit) What is going on? Firefox is working just fine. [rkampen@robsc7 google-chrome]$ rpm -qa |grep google google-chrome-stable-58.0.3029.110-1.x86_64 google-crosextra-caladea-fonts-1.002-0.4.20130214.el7.noarch google-crosextra-carlito-fonts-1.103-0.2.20130920.el7.noarch Any suggestions appreciated.

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get pdftk into (or from) a repo
by ken 20 May '17

20 May '17

pdftk used to be in a repo... or maybe it still is, but I don't know which one. Anyone know?

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[OT] how to give ssh options to rdist
by Gianluca Cecchi 19 May '17

19 May '17

Hello, I'm trying to configure rdist over ssh so that it connects at target side as a particular user. I'm using CentOS 7.3 on both ends (I also tested with Fedora 25 with the same behavor) So I create at source side the file ~/.ssh/config under mysourceuser home Host targetsrv.localdomain.local HostName targetsrv.localdomain.local User mytargetuser Then, connected as mysourceuser user on local server $ ssh targetsrv.localdomain.local mytargetuser(a)targetsrv.localdomain.local's password: So far so good as expected. But if I create a small distfile to distribute a file on targetsrv.localdomain.local and execute rdist on it, I receive the prompt of mysourceuser password, not mytargetuser one.... $ rdist -P /usr/bin/ssh -f ./distfile distrotest mysourceuser(a)targetsrv.localdomain.local's password: It seems the config file is not honored. I tried different combinations but none worked eg creating a wrapper script that runs ssh -F config_file "$@" I can workaround the problem using inside the distfile "mytargetuser(a)targetsrv.localdomain.local" instead of "targetsrv.localdomain.local" , this way it works. But I would like to avoid it if possible as I have a distfile with many entries and variables as destination hosts target. Any help appreciated Thanks, Gianluca

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Re: [CentOS] What's Next
by Eugene Poole 19 May '17

19 May '17

I read somewhere that the PCIe issue is indicative of some other hardware (PCIe SSD; etc) not working correctly. Also, the 4.10 kernel is not the kernel out of the box. In a environment with 10 or more servers do you really want a custom kernel? How do you maintain all of these custom kernels (i.e. is a different kernel required for a HP Gen 8 server different than a HP Gen 9 server?)? I've learned my lesson from using the FOSS HPLIP HP printer driver - every time the kernel is updated you have to re-install the driver... TIA -- Eugene Poole Woodstock, Georgia

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strange system outage
by Larry Martell 18 May '17

18 May '17

I have a CentOS 7 system that I run a home grown python daemon on. I run this same daemon on many other systems without any incident. On this one system the daemon seems to die or be killed every day around 3:30am. There is nothing it its log or any system logs that tell me why it dies. However in /var/log/messages every day I see something like this: May 10 03:35:58 localhost pure-ftpd: (tool(a)xx.xx.xx.xx) [NOTICE] /usrMay 10 03:57:57 localhost pure-ftpd: (tool(a)xx.xx.xx.xx) [NOTICE] /usr/local/motor/data//B31/today/Images/CP0982436.00C_T6PH8_M0-R_1/T6PH8_M0-RN_TT6PH8_M0-R_P4_M1_FX-1_FY4_RR1_TR1_Ver3.jpg uploaded (90666 bytes, 8322.34KB/sec) Notice how the message that was being printed at 03:35:58 is truncated mid-message and the next message is at 03:57:57 – there are always messages like around the time when the daemon dies. What could be going on here?

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Re: [CentOS] Centos 7 and MAC address munging
by m.roth＠5-cent.us 18 May '17

18 May '17

Subject: Re: [CentOS] Centos 7 and MAC address munging Date: Thu, 18 May 2017 06:22:21 +0100 From: James Hogarth <james.hogarth(a)gmail.com> > > On 17 May 2017 8:53 pm, <m.roth(a)5-cent.us> wrote: > >> Odd situation: I've mentioned before that I have several users for whom I >< have to spoof the MAC address, due to a software license. Now, I've got >> net.ifnames=0 biosdevname=0 on the grub2 command line, and I've got the >> spoofed MAC address in /etc/sysconfig/network-sctipts/ifcfg-eth0. > >> But he had a serious problem - X froze, and he thought to reboot, rather >> than call me. It came up with the actual MAC. I tried a number of things, >> including reboots, but the only thing that worked was systemctl stop >> NetworkManager, ifdown eth0, then ifup eth0, then start NetworkMangler, >> and all was good. > >> Yeah, I know, afterwards, I remembered I should have use nmcli.... > >> But the real question is *why* did it fail on the reboot. I find no clues >> in dmesg, or messages, or boot.log. > >> Clues for the poor? > > Is this box fully updated? I ask as the NM since 7.3 has different > behaviour from release due to rebasing. Mostly. Running 3.10.0-514.10.2.el7.x86_64, and yum tells me nothing marked for update (that's ignoring that we have exclude=kernel* *xorg* *nvid* kmod* in yum.conf) > > What does `nmcli con sh eth0 | grep clone` tell you? > 802-3-ethernet.cloned-mac-address: and the spoofed MAC address. > It's that property you need to set. Sorry, I don't understand the above sentence. What property - 802-3-ethernet.cloned-mac-address? And this is on top of ifcfg-eth0, and all the rest? mark

1 0

Best practices for copying lots of files machine-to-machine
by ken 18 May '17

18 May '17

An entire filesystem (~180g) needs to be copied from one local linux machine to another. Since both systems are on the same local subnet, there's no need for encryption. I've done this sort of thing before a few times in the past in different ways, but wanted to get input from others on what's worked best for them. One consideration is that the source filesystem contains quite a few hardlinks and symlinks and of course I want to preserve these, and preserve all timestamps and ownerships and permissions as well. Maintaining the integrity of this metadata and the integrity of the files themselves if of course the top priority. Speed is also a consideration, but having done this before, I find it even more important to have a running progress report or log so I can see how the session is proceeding and approximately how much longer it will be until finished... and too to see if something's hung up. One other consideration: There isn't much disk space left on the source machine, so creating a tar file, even compressed, isn't an option. What relevant methods have you been impressed by?

7 10

plymouth themes problem
by Fred Smith 18 May '17

18 May '17

Hi all! I was playing with plymouth themes on a c7 box. I found a page on redhat, in their rhel7 documentation that describes how to change to a different plymouth screen: plymouth-set-default-theme --list to find out what themes are installed. then I installed the remaining bunch the yum had available. so then installing one by doing plymouth-set-default-theme <theme name> dracut -f as documented on the aforementioned page, followed by a reboot produces NO plymouth splash screen. not even if I revert to the system default theme (the "charge" theme). Anybody know what I'm overlooking here? thanks! Fred -- ---- Fred Smith -- fredex(a)fcshome.stoneham.ma.us ----------------------------- The Lord detests the way of the wicked but he loves those who pursue righteousness. ----------------------------- Proverbs 15:9 (niv) -----------------------------

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Discuss May 2017