Discuss June 2020

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103 participants
87 discussions

MATE 1.20 test build for CentOS 7 available
by Greg Bailey 14 Oct '21

14 Oct '21

Hi everyone, There's been discussions in the past about updating MATE RPMs in EPEL-7: https://bugzilla.redhat.com/show_bug.cgi?id=1436260 https://lists.centos.org/pipermail/centos/2019-August/173154.html (and lots of others...) As a proof-of-concept, I've written some scripts that clone specific commits from the Fedora master branches, and then runs a tool to re-apply RPM scriptlets that are required by EL7 but removed from the Fedora .spec files. The scripts are available at: https://github.com/gebailey/mate-rpms/tree/master/1.20/el7 There's also instructions there if you want to try upgrading to MATE 1.20 w/o rebuilding them yourself. If these packages work for others, perhaps we can revisit the idea of updating the epel7 branches of the Fedora git repos and submitting an official update. There's nothing here (yet) about building MATE 1.22 (which might require a newer gcc for EL7), or building anything on CentOS 8, but thought the CentOS 7 users might find this helpful. -Greg

6 17

LibreOffice locking up
by H 07 Nov '20

07 Nov '20

I am running LibreOffice 5.3.6.1 under the latest update of CentOS 7 and the Mate desktop. Not infrequently LibreOffice Calc locks up and I have to force close the application. Altough the spreadsheet is rather large I would not consider it complex. This has been going on for some time and I am curious if the bug might be in LibreOffice or if there is some interaction with the Mate desktop that might be responsible. Both CentOS, LibreOffice and Mate have been regularly updated from the standard repositories for a long time. Does anyone else have the same problem?

6 11

CentOS7 and NFS
by Patrick Bégou 28 Aug '20

28 Aug '20

Hi, I need some help with NFSv4 setup/tuning. I have a dedicated nfs server (2 x E5-2620 8cores/16 threads each, 64GB RAM, 1x10Gb ethernet and 16x 8TB HDD) used by two servers and a small cluster (400 cores). All the servers are running CentOS 7, the cluster is running CentOS6. Time to time on the server I get: kernel: NFSD: client xxx.xxx.xxx.xxx testing state ID with incorrect client ID And the client xxx.xxx.xxx.xxx freeze whith: kernel: nfs: server xxxxx.legi.grenoble-inp.fr not responding, still trying kernel: nfs: server xxxxx.legi.grenoble-inp.fr OK kernel: nfs: server xxxxx.legi.grenoble-inp.fr not responding, still trying kernel: nfs: server xxxxx.legi.grenoble-inp.fr OK There is a discussion on RedHat7 support about this but only open to subscribers. Other searches with google do not provide useful information. Do you have an idea how to solve these freeze states ? More generally I would be really interested with some advice/tutorials to improve NFS performances in this dedicated context. There are so many [different] things about tuning NFS available on the web that I'm a little bit lost (the opposite of the previous question). So if some one has "the tutorial"...;-) Thanks Patrick

7 14

After update to 8 (2004) ... system is unbootable - UEFI Secure boot
by Leon Fauster 13 Aug '20

13 Aug '20

Hi all, I updated a Dell XPS laptop from CentOS 8.1 (1911) to 8.2 (2004). Installed kernels are kernel-4.18.0-147.5.1.el8_1.x86_64 kernel-4.18.0-147.8.1.el8_1.x86_64 kernel-4.18.0-193.6.3.el8_2.x86_64 Unfortunately I can not boot into the latest kernel-4.18.0-193.6.3.el8_2.x86_64. After grub2 screen I only see following line: EFI stub: UEFI Secure Boot is enabled Booting into the older kernel is still possible. The above line appears and after that the normal kernel output scrolls over the screen (rhgb quiet disabled). Is the new kernel correctly signed? What can I do? -- Thanks Leon

3 7

Brother HL-L2360DW printing quality
by H 23 Jul '20

23 Jul '20

I have the above printer but have not been able to resolve issues with the printing quality in CentOS 7. The test page prints fine but when I print PDF-documents, most recently using Chinese fonts, it is lacking and the pages very hard to read. The settings in the Mate Cups configuration panel are fine and set to 600 dpi, the settings in the printer menu are all OK yet it prints more like maybe 150 or even 75 dpi. Any suggestion what might be wrong?

3 7

C8 - KVM on bridge on VLAN on team issues.
by Lamar Owen 22 Jul '20

22 Jul '20

As part of my initial KVM host on C8 deployment, I decided to set up some HA features on the new host, specifically NIC teaming. Teaming seems to be bond++ of a sort, so I thought I would at least try it. So here's the scenario: 1.) Server with two gigabit ethernet ports, two Cisco switches. 2.) During install, used the 'Server with GUI' group and added the virtualization packages. 3.) During install, set up team0 to include the two gig-e ports set up active-backup (two switches). 4.) During install, set up three bridges, with the slave devices being VLANs pointed to the team0 subinterfaces (using VLANs 68, 101, and 302; 101 is to be the management bridge for the host, with guests on all three VLANs). So, for instance, bridge101 has a slave that is VLAN101 that points to team0.101 with a VLAN ID of 101. The bridge101 interface has a manual IP address, but bridge68 and bridge302 do not (IPv4 disabled; IPv6 Ignore) 5.) After reboot, the bridge101 interface comes up, and I successfully connect to the host, since the install is 8.1.1911, I ran a 'dnf update' up to 8.2.2004, which went well, then I successfully set up and used cockpit, cockpit-bridge, cockpit-machines, again over the IP address on bridge101. Ok, now that the base connectivity is working: 1.) Connect to the host (traffic on bridge101 over team0.101) using virt-manager on my laptop and install a C8 guest, with the network pointed to bridge302, and a manual IP address. 2.) After reboot of guest, there is no IP connectivity to the guest's gateway on VLAN302. 3.) HOWEVER, the gateway's MAC address shows up in the host's bridge fdb for VLAN302, AND in the arp output for the guest; ALSO, the MAC address for the guest shows on the cisco switch 'show mac-address-table' output. The output of 'ip --br link' looks normal for this configuration, but there's a disconnect somewhere. So, since I see that VLAN101 is passing traffic to the bridge correctly (since the management IP is on that VLAN), I try to set up a guest on VLAN101; no dice, no work, but the management IP still works fine. So, does anyone here have a working setup with KVM guests connecting to bridges using 802.1q VLANs on top of a team? Or even on top of a bond (I can reinstall and set it up as a bond easily enough, using active-backup, as far as I know; and, yes, I would reinstall the host from scratch to do this).

4 8

RPMFusion and NVIDIA driver problem
by Alessandro Baggi 01 Jul '20

01 Jul '20

Hi list, I'm on C8.1 and I'm trying to install NVIDIA driver from rpmfusion-nonfree repository but it returns: package kmod-nvidia-3:440.82-2.el8.x86_64 requires kmod-nvidia-4.18.0-147.el8.x86_64 >= 3:440.82-2.el8, but none of the providers can be installed - conflicting requests - nothing provides kernel < 4.18.0-148.el8 needed by kmod-nvidia-4.18.0-147.el8.x86_64-3:440.82-2.el8.x86_64 (try to add '--skip-broken' to skip uninstallable packages or '--nobest' to use not only best candidate packages) and uname -r returns: 4.18.0-193.6.3.el8_2.x86_64 Seems that RPMFusion needs an update. Waiting for this there is a way to install this package without fall in problems? Thank you in advance.

2 5

fdisk boot partition
by Jerry Geis 01 Jul '20

01 Jul '20

I am trying to use CentOS 8 host to boot an image (OS X) that I created using dd. First I tried fdisk -l image_file.img - all looks good so I did fdisk image_file.img - this works - but seems in CentOS 8 fdisk there is no longer a toggle bootable flag option. How do I do that ? Thanks, Jerry

4 3

what's the advantage of NetworkManager for server?
by d tbsky 01 Jul '20

01 Jul '20

Hi: I always use network-scripts to start network at EL7. NetworkManager is not as good as network scripts under that OS. but now EL8 said that network-scripts is depreciated. I wonder if I should still use network-scripts to start network? I am afraid there will be new bugs for the network-scripts, like systemd service unit dependency. although it is solid at EL7.

4 4

krb5 update => Database module does not match KDC version
by lejeczek 30 Jun '20

30 Jun '20

Hi everybody As a word of caution - make sure you are prepared for some trouble when upgrading krb5 packages to version 1.18.2-2.el8. FreeIPA brakes with: ...krb5kdc[554972](Error): Database module does not match KDC version - while initializing database for realm XX.YY

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Discuss June 2020