Discuss September 2019

discuss@lists.centos.org

107 participants
76 discussions

NFS Server on Centos 7.6.1810 dying without reason
by Erick Perez - Quadrian Enterprises 07 Sep '19

07 Sep '19

Good morning, in order to post proper documentation, what logs (or log level) do I need to troubleshoot a Centos 7.6.1810 3.10.0-957.27.2.el7.x86_64 tha tis running a NFS server on top LVM on top of XFS on top of VDO on top of MDAM on a 6 SSD disk RAID6 ? This physical NFS server is servign 2 NFS v4.2 shares to 2 physical KVM virtualization hosts. When remote NFS clients start doing intensive stuff (massive writes) , the NFS server crashes and sometimes make the Linux server reboot. form KVM side this is all I get: hvm002 kernel: nfs: server 10.10.10.2 not responding, timed out thanks --------------------- Erick ---------------------

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CUPS job handling
by hw 06 Sep '19

06 Sep '19

Hi, is it somehow possible to make CUPS automatically redirect jobs, and following jobs, away from printers which can not print them to other printers that can print them until the printers that couldn't print them are again able to print them? Like I have a bunch of label printers which are all the same, and all of which are prone to run out of labels or out of ribbon every now and then. It can take hours or even days before someone can refill a printer. Hence it would be very useful if CUPS could be told something like "if printer A doesn't print, move its current job to printer B and divert all new jobs sent to A to printer B instead until A prints again". What exactly happens when a printer that is member of a class can not print a job that was sent to the class? Will the unprintable job be automatically moved to another member of the same class, or will it only be aborted and never printed? With a class of two printers and one of them running out of labels, /var/log/cups/error_log only holds: ... [Job 174733] Stopping unresponsive job. What does this mean? Has the job been printed or not? Has it been printed after I refilled the printer?

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oval support for centos
by Sep0lkit 06 Sep '19

06 Sep '19

We use oval to check the system vulnerability. Redhat offer official oval(https://www.redhat.com/security/data/oval/), and it works well on redhat. There is no official centos oval, and using redhat oval on centos got false results. centos is based redhat, so I wrote a script fetch redhat oval files and convert it to useful for centos. And I push the oval to my github: https://github.com/Sep0lkit/oval-for-el Everyone interested in this can try to use it and tell me it works correctly or not.

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CentOS 8 will be released soon?
by Turritopsis Dohrnii Teo En Ming 05 Sep '19

05 Sep '19

Good afternoon from Singapore, According to the CentOS 8 build timeline, everything has been completed except release work. Does this mean CentOS 8 will be released soon? https://wiki.centos.org/About/Building_8 -----BEGIN EMAIL SIGNATURE----- The Gospel for all Targeted Individuals (TIs): [The New York Times] Microwave Weapons Are Prime Suspect in Ills of U.S. Embassy Workers Link: https://www.nytimes.com/2018/09/01/science/sonic-attack-cuba-microwave.html ******************************************************************************************** Singaporean Mr. Turritopsis Dohrnii Teo En Ming's Academic Qualifications as at 14 Feb 2019 [1] https://tdtemcerts.wordpress.com/ [2] https://tdtemcerts.blogspot.sg/ [3] https://www.scribd.com/user/270125049/Teo-En-Ming -----END EMAIL SIGNATURE-----

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nextcloud-client currently not installable from EPEL in CentOS7
by Kay Diederichs 02 Sep '19

02 Sep '19

Dear all, after enabling the EPEL repository, [root@localhost ~]# yum install nextcloud-client in a freshly installed and updated CentOS 7.6 machine gives Loaded plugins: fastestmirror, langpacks Loading mirror speeds from cached hostfile * base: centos.bio.lmu.de * epel: ftp.uni-stuttgart.de * extras: centos.schlundtech.de * updates: mirror1.hs-esslingen.de Resolving Dependencies --> Running transaction check ---> Package nextcloud-client.x86_64 0:2.3.3-1.el7 will be installed --> Processing Dependency: nextcloud-client-libs(x86-64) = 2.3.3-1.el7 for package: nextcloud-client-2.3.3-1.el7.x86_64 --> Processing Dependency: libQt5WebKitWidgets.so.5(Qt_5)(64bit) for package: nextcloud-client-2.3.3-1.el7.x86_64 --> Processing Dependency: libQt5Solutions_LockedFile-2.4.so.1()(64bit) for package: nextcloud-client-2.3.3-1.el7.x86_64 --> Processing Dependency: libQt5Solutions_SingleApplication-2.6.so.1()(64bit) for package: nextcloud-client-2.3.3-1.el7.x86_64 --> Processing Dependency: libQt5WebKit.so.5()(64bit) for package: nextcloud-client-2.3.3-1.el7.x86_64 --> Processing Dependency: libQt5WebKitWidgets.so.5()(64bit) for package: nextcloud-client-2.3.3-1.el7.x86_64 --> Processing Dependency: libnextcloudsync.so.0()(64bit) for package: nextcloud-client-2.3.3-1.el7.x86_64 --> Processing Dependency: libocsync.so.0()(64bit) for package: nextcloud-client-2.3.3-1.el7.x86_64 --> Processing Dependency: libqt5keychain.so.1()(64bit) for package: nextcloud-client-2.3.3-1.el7.x86_64 --> Running transaction check ---> Package nextcloud-client-libs.x86_64 0:2.3.3-1.el7 will be installed ---> Package qt5-qtwebkit.x86_64 0:5.9.1-2.el7 will be installed --> Processing Dependency: qt5-qtbase(x86-64) = 5.9.7 for package: qt5-qtwebkit-5.9.1-2.el7.x86_64 --> Processing Dependency: qt5-qtdeclarative(x86-64) = 5.9.7 for package: qt5-qtwebkit-5.9.1-2.el7.x86_64 --> Processing Dependency: libQt5Positioning.so.5(Qt_5)(64bit) for package: qt5-qtwebkit-5.9.1-2.el7.x86_64 --> Processing Dependency: libQt5Qml.so.5(Qt_5)(64bit) for package: qt5-qtwebkit-5.9.1-2.el7.x86_64 --> Processing Dependency: libQt5Quick.so.5(Qt_5)(64bit) for package: qt5-qtwebkit-5.9.1-2.el7.x86_64 --> Processing Dependency: libQt5Quick.so.5(Qt_5_PRIVATE_API)(64bit) for package: qt5-qtwebkit-5.9.1-2.el7.x86_64 --> Processing Dependency: libQt5Sensors.so.5(Qt_5)(64bit) for package: qt5-qtwebkit-5.9.1-2.el7.x86_64 --> Processing Dependency: libQt5WebChannel.so.5(Qt_5)(64bit) for package: qt5-qtwebkit-5.9.1-2.el7.x86_64 --> Processing Dependency: libQt5Positioning.so.5()(64bit) for package: qt5-qtwebkit-5.9.1-2.el7.x86_64 --> Processing Dependency: libQt5Qml.so.5()(64bit) for package: qt5-qtwebkit-5.9.1-2.el7.x86_64 --> Processing Dependency: libQt5Quick.so.5()(64bit) for package: qt5-qtwebkit-5.9.1-2.el7.x86_64 --> Processing Dependency: libQt5Sensors.so.5()(64bit) for package: qt5-qtwebkit-5.9.1-2.el7.x86_64 --> Processing Dependency: libQt5WebChannel.so.5()(64bit) for package: qt5-qtwebkit-5.9.1-2.el7.x86_64 ---> Package qtkeychain-qt5.x86_64 0:0.7.0-1.el7 will be installed --> Processing Dependency: qtkeychain(x86-64) = 0.7.0-1.el7 for package: qtkeychain-qt5-0.7.0-1.el7.x86_64 ---> Package qtlockedfile-qt5.x86_64 0:2.4-20.20150629git5a07df5.el7 will be installed ---> Package qtsingleapplication-qt5.x86_64 0:2.6.1-28.el7 will be installed --> Running transaction check ---> Package qt5-qtdeclarative.x86_64 0:5.9.2-1.el7 will be installed --> Processing Dependency: libQt5XmlPatterns.so.5(Qt_5)(64bit) for package: qt5-qtdeclarative-5.9.2-1.el7.x86_64 --> Processing Dependency: libQt5XmlPatterns.so.5()(64bit) for package: qt5-qtdeclarative-5.9.2-1.el7.x86_64 ---> Package qt5-qtlocation.x86_64 0:5.9.2-1.el7 will be installed ---> Package qt5-qtsensors.x86_64 0:5.9.2-1.el7 will be installed ---> Package qt5-qtwebchannel.x86_64 0:5.9.2-1.el7 will be installed ---> Package qt5-qtwebkit.x86_64 0:5.9.1-2.el7 will be installed --> Processing Dependency: qt5-qtbase(x86-64) = 5.9.7 for package: qt5-qtwebkit-5.9.1-2.el7.x86_64 --> Processing Dependency: qt5-qtdeclarative(x86-64) = 5.9.7 for package: qt5-qtwebkit-5.9.1-2.el7.x86_64 ---> Package qtkeychain.x86_64 0:0.7.0-1.el7 will be installed --> Processing Dependency: libQtCore.so.4()(64bit) for package: qtkeychain-0.7.0-1.el7.x86_64 --> Processing Dependency: libQtDBus.so.4()(64bit) for package: qtkeychain-0.7.0-1.el7.x86_64 --> Running transaction check ---> Package qt.x86_64 1:4.8.7-3.el7_6 will be installed --> Processing Dependency: qt-settings for package: 1:qt-4.8.7-3.el7_6.x86_64 ---> Package qt5-qtwebkit.x86_64 0:5.9.1-2.el7 will be installed --> Processing Dependency: qt5-qtbase(x86-64) = 5.9.7 for package: qt5-qtwebkit-5.9.1-2.el7.x86_64 --> Processing Dependency: qt5-qtdeclarative(x86-64) = 5.9.7 for package: qt5-qtwebkit-5.9.1-2.el7.x86_64 ---> Package qt5-qtxmlpatterns.x86_64 0:5.9.2-1.el7 will be installed --> Running transaction check ---> Package qt-settings.noarch 0:19-23.8.el7.centos will be installed ---> Package qt5-qtwebkit.x86_64 0:5.9.1-2.el7 will be installed --> Processing Dependency: qt5-qtbase(x86-64) = 5.9.7 for package: qt5-qtwebkit-5.9.1-2.el7.x86_64 --> Processing Dependency: qt5-qtdeclarative(x86-64) = 5.9.7 for package: qt5-qtwebkit-5.9.1-2.el7.x86_64 --> Finished Dependency Resolution Error: Package: qt5-qtwebkit-5.9.1-2.el7.x86_64 (epel) Requires: qt5-qtbase(x86-64) = 5.9.7 Installed: qt5-qtbase-5.9.2-3.el7.x86_64 (@anaconda) qt5-qtbase(x86-64) = 5.9.2-3.el7 Error: Package: qt5-qtwebkit-5.9.1-2.el7.x86_64 (epel) Requires: qt5-qtdeclarative(x86-64) = 5.9.7 Available: qt5-qtdeclarative-5.9.2-1.el7.x86_64 (base) qt5-qtdeclarative(x86-64) = 5.9.2-1.el7 Error: Package: qt5-qtwebkit-5.9.1-2.el7.x86_64 (epel) Requires: qt5-qtdeclarative(x86-64) = 5.9.7 Installing: qt5-qtdeclarative-5.9.2-1.el7.x86_64 (base) qt5-qtdeclarative(x86-64) = 5.9.2-1.el7 You could try using --skip-broken to work around the problem You could try running: rpm -Va --nofiles --nodigest [root@localhost ~]# The culprit appears to be the current qt5-qtwebkit-5.9.1-2 from EPEL. A workaround is: downloading and installing qt5-qtwebkit-5.9.1-1 (from https://archive.fedoraproject.org/pub/archive/epel/7/x86_64/Packages/ ) lets the installation succeed. However, /etc/yum.conf then needs exclude=qt5-qtwebkit I think this is is due to the fact that EPEL is synchronized with RedHat (which has version 7.7), but CentOS is still at 7.6 This type of problem has bitten us a couple of times (mostly with ElRepo and the NVidia kmod and driver) - whenever a CentOS update was not yet ready, but the corresponding RedHat point release was out. ElRepo seems to have an elegant solution for this solution - yum-plugin-elrepo . Is there anything like that available for EPEL ? thanks, Kay

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Mailbox for Sysadmin
by Administrator 01 Sep '19

01 Sep '19

Good day Administrator, Every self-respecting Admin should have a mailbox in worthy domain. Do you have it already? If no - go to https://nox11.com choose one and start new life If you aren't interested accept apology for spam. --- Cheers admin(a)nox11.com

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Discuss September 2019