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34729 discussions

Using Cgroups in CentOS-7
by Gestió Servidors 18 May '21

18 May '21

Hi, I want to limit CPUQuota and Memory using "Cgroups". After reading some documents, it seems I need to modify "user.slice" systemd file adding "CPUQuota=25%" (for example) but, after it, if I run a "stress" with other user (not "root"), stress process takes 100% CPU. I have noticed that rebooting system non-root user has % CPU limited... but also root... so is it possible to configure that limits to all users but non root? Thanks.

2 1

pam_mysql
by Emmett Culley 16 May '21

16 May '21

I am attempting to create a multiple domain email server using postfix and cyrus-imap on CentOS Stream 8. It will includes a web back end similar to cyradm. Now I am stuck on mysql or mariadb support for pam. I am not able to find a pam_mysql rpm that will install on CentOS 8. I have a previous version working on CentOS 7. On CentOS 7 I am using pam_mysql 1:0.7-0.20.rc1.fc23 and all is working and has been for a number of years. I found pam_mysql-0.8.1-0.6.fc32.x86_64.rpm, but when I attempt to install it, it says it needs libcrypt.so.1 and it appears CentOS Stream has libcrypt.so.2 Any pointers either where to find pam_mysql, or some other solutions, for CentOS Stream 8? Note that I have epel-release installed and enabled, though epel-playground is disabled, and I am using Remi's repos to install php 7.4.

3 2

CentOS 7 on a new Dell Precision
by Tony Schreiner 16 May '21

16 May '21

I am trying to install CentOS 7 on a Dell Precision 3640 and am having some driver problems. I had to use kmod-e1000e from ElReo enable networking on the: 00:1f.6 Ethernet controller [0200]: Intel Corporation Ethernet Connection (11) I219-LM [8086:0d4c] I still don't have graphics. When starting Gnome, it shows the graphic screen briefly but reverts to the text login. It has two graphics cards: 00:02.0 VGA compatible controller [0300]: Intel Corporation Device [8086:9bc5] (rev 05) 01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Lexa XT [Radeon PRO WX 3200] [1002:6981] (rev 10) lsmod shows i915 and amdgpu modules loaded but Xorg.0.log says the modules amdgpu cannot be found. Is it a version issue? Dell has a Radeon driver for RHEL 8, but not for 7. I have no xorg.conf file. [ 54.839] X.Org X Server 1.20.4 X Protocol Version 11, Revision 0 [ 54.840] Build Operating System: 3.10.0-957.1.3.el7.x86_64 [ 54.840] Current Operating System: Linux isr3c538b3kenn 3.10.0 1160.25.1.el7.x86_64 #1 SMP Wed Apr 28 21:49:45 UTC 2021 x86_64 [ 54.840] Kernel command line: BOOT_IMAGE=/vmlinuz-3.10.01160.25.1.el7.x86_64 root=/dev/mapper/centos-root ro crashkernel=auto rd.lvm.lv=centos/root rd.lvm.lv=centos/swap rhgb quiet LANG=en_US.UTF-8 [ 54.840] Build Date: 24 February 2021 09:09:20PM [ 54.840] Build ID: xorg-x11-server 1.20.4-15.el7_9 [ 54.840] Current version of pixman: 0.34.0 [ 54.840] Before reporting problems, check http://wiki.x.orgto make sure that you have the latest version. [ 54.840] Markers: (--) probed, (**) from config file, (==) default setting, (++) from command line, (!!) notice, (II) informational, (WW) warning, (EE) error, (NI) not implemented, (??) unknown. [ 54.840] (==) Log file: "/var/log/Xorg.0.log", Time: Mon May 3 14:31:21 2021 [ 54.840] (==) Using system config directory "/usr/share/X11/xorg.conf.d" [ 54.840] (==) No Layout section. Using the first Screen section. [ 54.840] (==) No screen section available. Using defaults. [ 54.840] (**) |-->Screen "Default Screen Section" (0) [ 54.840] (**) | |-->Monitor "<default monitor>" [ 54.840] (==) No monitor specified for screen "Default Screen Section". Using a default monitor configuration. [ 54.840] (==) Automatically adding devices [ 54.840] (==) Automatically enabling devices [ 54.840] (==) Automatically adding GPU devices [ 54.840] (==) Automatically binding GPU devices [ 54.840] (==) Max clients allowed: 256, resource mask: 0x1fffff [ 54.840] (==) FontPath set to: catalogue:/etc/X11/fontpath.d, built-ins [ 54.840] (==) ModulePath set to "/usr/lib64/xorg/modules" [ 54.840] (II) The server relies on udev to provide the list of input devices . If no devices become available, reconfigure udev or disable AutoAddDevices. [ 54.840] (II) Loader magic: 0x561cda874020 [ 54.840] (II) Module ABI versions: [ 54.840] X.Org ANSI C Emulation: 0.4 [ 54.840] X.Org Video Driver: 24.0 [ 54.840] X.Org XInput driver : 24.1 [ 54.840] X.Org Server Extension : 10.0 [ 54.841] (II) xfree86: Adding drm device (/dev/dri/card0) [ 54.841] (II) Platform probe for /sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/card0 [ 54.843] (--) PCI:*(0@0:2:0) 8086:9bc5:1028:098d rev 5, Mem @0xa1000000/16777216, 0x80000000/268435456, I/O @ 0x00004000/64, BIOS @ 0x????????/131072 [ 54.843] (--) PCI: (1@0:0:0) 1002:6981:1028:2b0d rev 16, Mem @0x4100000000/4294967296, 0x4080000000/2097152, 0xa2100000/262144, I/O @0x00003000/256, BIOS @ 0x????????/131072 [ 54.843] (II) LoadModule: "glx" [ 54.844] (II) Loading /usr/lib64/xorg/modules/extensions/libglx.so [ 54.844] (II) Module glx: vendor="X.Org Foundation" [ 54.844] compiled for 1.20.4, module version = 1.0.0 [ 54.844] ABI class: X.Org Server Extension, version 10.0 [ 54.844] (==) Matched ati as autoconfigured driver 0 [ 54.844] (==) Matched modesetting as autoconfigured driver 1 [ 54.844] (==) Matched fbdev as autoconfigured driver 2 [ 54.844] (==) Matched vesa as autoconfigured driver 3 [ 54.844] (==) Assigned the driver to the xf86ConfigLayout [ 54.844] (II) LoadModule: "ati" [ 54.844] (II) Loading /usr/lib64/xorg/modules/drivers/ati_drv.so [ 54.844] (II) Module ati: vendor="X.Org Foundation" [ 54.844] compiled for 1.20.4, module version = 19.0.1 [ 54.844] Module class: X.Org Video Driver [ 54.844] ABI class: X.Org Video Driver, version 24.0 [ 54.844] (II) LoadModule: "amdgpu" [ 54.844] (WW) Warning, couldn't open module amdgpu [ 54.844] (EE) Failed to load module "amdgpu" (module does not exist, 0) [ 54.844] (II) LoadModule: "modesetting" [ 54.844] (II) Loading /usr/lib64/xorg/modules/drivers/modesetting_drv.so [ 54.844] (II) Module modesetting: vendor="X.Org Foundation" [ 54.844] compiled for 1.20.4, module version = 1.20.4 [ 54.844] Module class: X.Org Video Driver [ 54.844] ABI class: X.Org Video Driver, version 24.0 [ 54.844] (II) LoadModule: "fbdev" [ 54.844] (II) Loading /usr/lib64/xorg/modules/drivers/fbdev_drv.so [ 54.844] (II) Module fbdev: vendor="X.Org Foundation" [ 54.844] compiled for 1.20.1, module version = 0.5.0 [ 54.844] Module class: X.Org Video Driver [ 54.844] ABI class: X.Org Video Driver, version 24.0 [ 54.844] (II) LoadModule: "vesa" [ 54.844] (II) Loading /usr/lib64/xorg/modules/drivers/vesa_drv.so [ 54.844] (II) Module vesa: vendor="X.Org Foundation" [ 54.844] compiled for 1.20.1, module version = 2.4.0 [ 54.844] Module class: X.Org Video Driver [ 54.844] ABI class: X.Org Video Driver, version 24.0 [ 54.844] (II) modesetting: Driver for Modesetting Kernel Drivers: kms [ 54.844] (II) FBDEV: driver for framebuffer: fbdev [ 54.844] (II) VESA: driver for VESA chipsets: vesa [ 54.844] (++) using VT number 2 [ 54.845] (WW) Falling back to old probe method for modesetting [ 54.845] (II) modeset(1): using default device [ 54.845] (II) Loading sub module "fbdevhw" [ 54.845] (II) LoadModule: "fbdevhw" [ 54.845] (II) Loading /usr/lib64/xorg/modules/libfbdevhw.so [ 54.845] (II) Module fbdevhw: vendor="X.Org Foundation" [ 54.845] compiled for 1.20.4, module version = 0.0.2 [ 54.845] ABI class: X.Org Video Driver, version 24.0 [ 54.845] (EE) Unable to find a valid framebuffer device [ 54.845] (WW) Falling back to old probe method for fbdev [ 54.845] (II) Loading sub module "fbdevhw" [ 54.845] (II) LoadModule: "fbdevhw" [ 54.845] (II) Loading /usr/lib64/xorg/modules/libfbdevhw.so [ 54.845] (II) Module fbdevhw: vendor="X.Org Foundation" [ 54.845] compiled for 1.20.4, module version = 0.0.2 [ 54.845] ABI class: X.Org Video Driver, version 24.0 [ 54.845] (II) FBDEV(3): using default device [ 54.845] vesa: Refusing to run on UEFI [ 54.845] (II) modeset(G0): using drv /dev/dri/card0 [ 54.845] (EE) Screen 0 deleted because of no matching config section. [ 54.845] (II) UnloadModule: "modesetting" [ 54.845] (EE) Screen 1 deleted because of no matching config section. [ 54.845] (II) UnloadModule: "fbdev" [ 54.845] (II) UnloadSubModule: "fbdevhw" [ 54.845] (II) modeset(0): Creating default Display subsection in Screen sect ion "Default Screen Section" for depth/fbbpp 24/32 [ 54.845] (==) modeset(0): Depth 24, (==) framebuffer bpp 32 [ 54.845] (DB) xf86MergeOutputClassOptions unsupported bus type 0 [ 54.845] (==) modeset(0): RGB weight 888 [ 54.845] (==) modeset(0): Default visual is TrueColor [ 54.845] (II) Loading sub module "glamoregl" [ 54.845] (II) LoadModule: "glamoregl" [ 54.845] (II) Loading /usr/lib64/xorg/modules/libglamoregl.so [ 54.847] (II) Module glamoregl: vendor="X.Org Foundation" [ 54.847] compiled for 1.20.4, module version = 1.0.1 [ 54.847] ABI class: X.Org ANSI C Emulation, version 0.4 [ 54.890] (II) modeset(0): glamor X acceleration enabled on AMD POLARIS12 (DRM 3.27.0, 3.10.0-1160.25.1.el7.x86_64, LLVM 7.0.1) [ 54.890] (II) modeset(0): glamor initialized [ 54.890] (II) modeset(0): Output DP-1 has no monitor section [ 54.890] (II) modeset(0): Output DP-2 has no monitor section [ 54.890] (II) modeset(0): Output DP-3 has no monitor section [ 54.890] (II) modeset(0): Output DP-4 has no monitor section [ 54.890] (II) modeset(0): EDID for output DP-1 [ 54.890] (II) modeset(0): EDID for output DP-2 [ 54.890] (II) modeset(0): EDID for output DP-3 [ 54.890] (II) modeset(0): EDID for output DP-4 [ 54.890] (II) modeset(0): Output DP-1 disconnected [ 54.890] (II) modeset(0): Output DP-2 disconnected [ 54.890] (II) modeset(0): Output DP-3 disconnected [ 54.890] (II) modeset(0): Output DP-4 disconnected [ 54.890] (WW) modeset(0): No outputs definitely connected, trying again... [ 54.890] (II) modeset(0): Output DP-1 disconnected [ 54.890] (II) modeset(0): Output DP-2 disconnected [ 54.890] (II) modeset(0): Output DP-3 disconnected [ 54.890] (II) modeset(0): Output DP-4 disconnected [ 54.890] (WW) modeset(0): Unable to find connected outputs - setting 1024x76 8 initial framebuffer [ 54.890] (==) modeset(0): Using gamma correction (1.0, 1.0, 1.0) [ 54.890] (==) modeset(0): DPI set to (96, 96) [ 54.890] (II) Loading sub module "fb" [ 54.890] (II) LoadModule: "fb" [ 54.890] (II) Loading /usr/lib64/xorg/modules/libfb.so [ 54.890] (II) Module fb: vendor="X.Org Foundation" [ 54.890] compiled for 1.20.4, module version = 1.0.0 [ 54.890] ABI class: X.Org ANSI C Emulation, version 0.4 [ 54.890] (II) FBDEV(1): Creating default Display subsection in Screen section "Default Screen Section" for depth/fbbpp 24/32 [ 54.890] (==) FBDEV(1): Depth 24, (==) framebuffer bpp 32 [ 54.890] (==) FBDEV(1): RGB weight 888 [ 54.890] (==) FBDEV(1): Default visual is TrueColor [ 54.890] (==) FBDEV(1): Using gamma correction (1.0, 1.0, 1.0) [ 54.890] (II) FBDEV(1): hardware: EFI VGA (video memory: 6892kB) [ 54.890] (DB) xf86MergeOutputClassOptions unsupported bus type 0 [ 54.890] (II) FBDEV(1): checking modes against framebuffer device... [ 54.890] (II) FBDEV(1): checking modes against monitor... [ 54.890] (II) FBDEV(1): Virtual size is 1680x1050 (pitch 1680) [ 54.890] (**) FBDEV(1): Built-in mode "current": 176.4 MHz, 82.9 kHz, 77.2 Hz [ 54.890] (II) FBDEV(1): Modeline "current"x0.0 176.43 1680 1712 1920 2128 1050 1054 1058 1074 -hsync -vsync -csync (82.9 kHz b) [ 54.890] (==) FBDEV(1): DPI set to (96, 96) [ 54.890] (II) Loading sub module "fb" [ 54.890] (II) LoadModule: "fb" [ 54.890] (II) Loading /usr/lib64/xorg/modules/libfb.so [ 54.890] (II) Module fb: vendor="X.Org Foundation" [ 54.890] compiled for 1.20.4, module version = 1.0.0 [ 54.890] ABI class: X.Org ANSI C Emulation, version 0.4 [ 54.890] (**) FBDEV(1): using shadow framebuffer [ 54.890] (II) Loading sub module "shadow" [ 54.890] (II) LoadModule: "shadow" [ 54.890] (II) Loading /usr/lib64/xorg/modules/libshadow.so [ 54.890] (II) Module shadow: vendor="X.Org Foundation [ 54.890] compiled for 1.20.4, module version = 1.1.0 [ 54.890] ABI class: X.Org ANSI C Emulation, version 0.4 [ 54.890] (==) modeset(G0): Depth 24, (==) framebuffer bpp 32 [ 54.890] (==) modeset(G0): RGB weight 888 [ 54.890] (==) modeset(G0): Default visual is TrueColor [ 54.890] (II) Loading sub module "glamoregl" [ 54.890] (II) LoadModule: "glamoregl" [ 54.890] (II) Loading /usr/lib64/xorg/modules/libglamoregl.so [ 54.890] (II) Module glamoregl: vendor="X.Org Foundation" [ 54.890] compiled for 1.20.4, module version = 1.0.1 [ 54.890] ABI class: X.Org ANSI C Emulation, version 0.4 [ 54.893] (II) modeset(G0): glamor X acceleration enabled on AMD POLARIS12 DRM 3.27.0, 3.10.0-1160.25.1.el7.x86_64, LLVM 7.0.1) [ 54.893] (II) modeset(G0): glamor initialized [ 54.893] (II) modeset(G0): Output DP-1-1 has no monitor section [ 54.893] (II) modeset(G0): Output DP-1-2 has no monitor section [ 54.893] (II) modeset(G0): Output DP-1-3 has no monitor section [ 54.893] (II) modeset(G0): Output DP-1-4 has no monitor section [ 54.893] (II) modeset(G0): EDID for output DP-1-1 [ 54.893] (II) modeset(G0): EDID for output DP-1-2 [ 54.893] (II) modeset(G0): EDID for output DP-1-3 [ 54.893] (II) modeset(G0): EDID for output DP-1-4 [ 54.893] (==) modeset(G0): Using gamma correction (1.0, 1.0, 1.0) [ 54.893] (==) modeset(G0): DPI set to (96, 96) [ 54.893] (II) Loading sub module "fb" [ 54.893] (II) LoadModule: "fb" [ 54.893] (II) Loading /usr/lib64/xorg/modules/libfb.so [ 54.893] (II) Module fb: vendor="X.Org Foundation" [ 54.893] compiled for 1.20.4, module version = 1.0.0 [ 54.893] ABI class: X.Org ANSI C Emulation, version 0.4 [ 54.893] (EE) modeset(G0): drmSetMaster failed: Invalid argument [ 54.893] (EE) Fatal server error: [ 54.893] (EE) AddScreen/ScreenInit failed for gpu driver 0 -1 [ 54.893] (EE) [ 54.893] (EE) Please consult the The X.Org Foundation support at http://wiki.x.org for help. [ 54.893] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information. [ 54.893] (EE) [ 54.895] (EE) Server terminated with error (1). Closing log file. Thanks if you have any recommendations. tony

2 2

Weird localectl behavior under CentOS 7
by Nicolas Kovacs 15 May '21

15 May '21

Hi, On a fresh CentOS 7 installation using Français/France as regional parameters in the installer, here's what localectl looks like: [microlinux@linuxbox ~]$ localectl System Locale: LANG=fr_FR.UTF-8 VC Keymap: ch-fr X11 Layout: ch X11 Variant: fr Now I'd like to have my system messages in english. So I set the system language accordingly: $ sudo localectl set-locale LANG=en_US.utf8 Things seem to look OK now: [microlinux@linuxbox ~]$ localectl System Locale: LANG=en_US.utf8 VC Keymap: ch-fr X11 Layout: ch X11 Variant: fr Except when I display my LANG variable, it's still fr_FR.UTF-8 for normal users... but en_US.utf8 for root. This looks like inconsistent or buggy behavior to me. Any suggestions on how to change the default system locale LANG so that it's en_US.utf8 for everybody *without* having to jump through burning loops and putting it in everybody's ~/.bashrc ? Cheers, Niki -- Microlinux - Solutions informatiques durables 7, place de l'église - 30730 Montpezat Site : https://www.microlinux.fr Blog : https://blog.microlinux.fr Mail : info(a)microlinux.fr Tél. : 04 66 63 10 32 Mob. : 06 51 80 12 12

3 4

getssl was working stopped
by Jerry Geis 14 May '21

14 May '21

Hi All - I am using getssl on CentOS 7. It have been working fine since Feb 17th and just stopped. My script: getssl -u -a -q getssl: for some reason could not reach http://MY_NAME/.well-known/acme-challenge/lL_ublhWh3fnmbXhhh3BR3bdnjHoMFAgT… - please check it manually So I did check it manually from another machine - it works fine: curl http://MY_NAME/.well-known/acme-challenge/lL_ublhWh3fnmbXhhh3BR3bdnjHoMFAgT… lL_ublhWh3fnmbXhhh3BR3bdnjHoMFAgTimTvZUTLQM.tIS27xF0xtz7YHES31MATofXyCeyfqttq7B_YBYZetI So it works fine. I then thought perhaps a firewall issue. So I "systemctl stop firewalld", redid the getssl -u -a -q command above - and I get the same error. How do I see/tell what its not liking ? Thanks, Jerry

3 5

systemd and 'Stale file handle' errors?
by James Pearson 14 May '21

14 May '21

I have a CentOS 7 system where I needed to restart chronyd - but the systemctl restart failed with the error: systemd[1]: Starting NTP client/server... systemd[43578]: Failed at step NAMESPACE spawning /usr/sbin/chronyd: Stale file handle systemd[1]: chronyd.service: control process exited, code=exited status=226 Turns out there are a couple of Stale NFS file handles from fuse mounts (related to gvfsd) of sub directories under an NFS mounted home directory server - but the home directory for the user in this case, no longer exist (user has left) However, I have no idea why these 'Stale file handles' prevent a service being started by systemd ? In this case, chronyd has nothing to do with NFS mounted user home directories - so shouldn't really care ? I have tried everything I can think of to clear these stale mounts, but with no luck Does anyone know why systemd complains about unconnected 'Stale file handles' - and is there any way I can tell systemctl to start a service regardless of these 'errors' ? Rebooting the host will be a last resort (the system is used by many users) - but in the meantime, I've manually started the /usr/sbin/chronyd binary directly, which runs fine Thanks James Pearson

3 3

cups, stalling the transfer of printed files from the local machines to the cups print server
by Gregory P. Ennis 12 May '21

12 May '21

Everyone, I have been having some problems with our cups printing service for the last 4 months. I have a gateway machine that holds the printer information and is the print server. The other machines on the network use cups and cups-browsed that are set up to spool the print jobs to the gateway and then the gateway sends the data stream to the respective printers. The problem I have is that on any of the local machines the print jobs stall. I can run lpstat lpt6 for instance which gives me the listing of the stalled print jobs, but I am not seeing error messages in the logs either on the local machine or on the gateway print server. In doing some google searching I found that there was a problem with gh ghostscript-9.07-31.el7_6.10.x86_64 and ghostscript-cups-9.07- 31.el7_6.10.x86_64 that was apparently fixed. I am running Centos 7.9 that is fully updated with gs 9.25 on both the local machines and the gateway. The problem is intermittent and appears with various file types pdf, ps, pcl, and txt. I have not been able to identify any specific or consistent association. If any of you have had this problem I would sure appreciate your help. Thanks in advance !!!! -- Greg Ennis

1 1

ipforwarding -- routing
by R C 11 May '21

11 May '21

Hello, I have an accesspoint, that I connected to one ethernetport, the ap has ip 192.168.67.6, the port 192.168.67.1 I want to forward/route traffic for anything in 192.168.66.0 to go to that access point, and from the ap to the other port. What is the best way to do that? I tried: sudo sysctl -w net.ipv4.ip_forward=1 sudo firewall-cmd --direct --add-rule ipv4 filter FORWARD 0 -o eno1 -i enp0s20u4u1 -j ACCEPT sudo firewall-cmd --direct --add-rule ipv4 filter FORWARD 0 -o enp0s20u4u1 -i eno1 -j ACCEPT but that doesn't seem to work. thanks, Ron

2 1

will there be centos 8.4?
by d tbsky 11 May '21

11 May '21

Hi: RHEL 8.3 doesn't offer extended update support, so it seems be EOL this month. but centos8 will be supported until December. so will there be centos 8.4, or centos 8.3 will do the extend update support itself?

5 8

Reminder: CentOS Dojo this week
by Rich Bowen 10 May '21

10 May '21

Reminder: The CentOSDojo is this week, Thursday and Friday. The schedule and (Free!) registration is available at https://wiki.centos.org/Events/Dojo/May2021

1 0

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