Discuss

discuss@lists.centos.org

34729 discussions

systemd / services / current process list
by Leon Fauster 08 Nov '20

08 Nov '20

Hi, following requirement is needed here (forced by application migration from C6->C8): I have two services running under supervision by systemd. ServiceA: runs as user AppUser ServiceB: runs as user AppUser ServiceB can see "all" processes from AppUser (ps aux) running by systemd (in fact it sees no other processes). So ServiceB can see the processes of ServiceA. I have also a cron job that runs every 5 minutes as user AppUser. Now the problem is, that ServiceB via ps aux can't see the process of the cron job albeit running by the same AppUser. Which security feature of systemd can be altered to allow seeing all or at least AppUser's processes? ServiceA as only this "features": PrivateTmp=true ServiceB as only this features: PrivateTmp=true RuntimeDirectory=calculation RuntimeDirectoryMode=0755 Any hints would be great! Thanks, Leon

1 1

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

USB External video
by Jerry Geis 06 Nov '20

06 Nov '20

Hi All - Has anyone tried using a USB 4K adapter ? Something like Startech USB32HD4K? Are these devices on option for linux ? Thanks Jerry

2 1

Centos 8 and xfs_quota
by david 06 Nov '20

06 Nov '20

Folks I'm trying to use xfs_quota to keep track of disk space usage for my users. The documentation states that I should specify "uquota" as an option on the mount data in /etc/fstab. Yet, I cannot find the entry in fstab that corresponds to the Logical Volume that ends up being mounted on /home1. The system in question was installed on a single disk system. Later, after install, I added a second disk, created a Logical Volume on it, and mounted it as /home1, where all the user data gets stored. It holds an xfs file system. Upon examining /etc/fstab, there's no evidence of the second disk, yet it does get mounted: [root@ape ~]# cat /etc/fstab # # /etc/fstab # Created by anaconda on Fri May 1 21:05:38 2020 # # Accessible filesystems, by reference, are maintained under '/dev/disk/'. # See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info. # # After editing this file, run 'systemctl daemon-reload' to update systemd # units generated from this file. # /dev/mapper/cl_ape-root / xfs defaults 0 0 UUID=d5a206d6-7ea1-42b7-8f52-071e98d09f98 /boot ext4 defaults 1 2 /dev/mapper/cl_ape-swap swap swap defaults 0 0 [root@ape ~]# Yet, when I look at the current mounts of xfs file systems: [root@ape ~]# mount | grep xfs /dev/mapper/cl_ape-root on / type xfs (rw,relatime,attr2,inode64,noquota) /dev/mapper/vg_abcde-lv01 on /home1 type xfs (rw,relatime,attr2,inode64,noquota) [root@ape ~]# the LV of the second disk shows up. lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 25G 0 disk +-sda1 8:1 0 1G 0 part /boot +-sda2 8:2 0 24G 0 part +-cl_ape-root 253:0 0 21.5G 0 lvm / +-cl_ape-swap 253:1 0 2.5G 0 lvm [SWAP] sdb 8:16 0 5.2T 0 disk +-vg_abcde-lv01 253:2 0 5.2T 0 lvm /home1 sr0 11:0 1 597M 0 rom [root@ape ~]# How do I enable quotas on a file system that is being mounted but not in fstab? I suspect systemd has a role here, but I can't find any evidence. David

2 1

GVIM annoyances
by Gary Stainburn 06 Nov '20

06 Nov '20

I've just upgraded from my old F9 box to C7, which of course means lots of changes. However, the ones are are annoying me most are with VIM. No matter what I do I can't get gvim to open in a reasonable size. I have a dual headed setup (laptop + external) and every time gvim opens it takes up both screens. I've tried a few suggestions including the one below without success. In fact this one causes X to crash when I start gvim. The second problem I have is the selection of the font. My old box had "sans Regular 12" which was a lovely font to work with. However, when I choose the same font on the new box it's hideous. I don't know best how to request this, but basically how can I have my nice old font back? |if has("gui_running") " GUI is running or is about to start. " Maximize gvim window. set lines=999 columns=999 else " This is console Vim. if exists("+lines") set lines=50 endif if exists("+columns") set columns=100 endif endif |

4 3

Style Guide for ASCII Text Documents ?
by Nicolas Kovacs 06 Nov '20

06 Nov '20

Hi, Can anyone on this list recommend a good style guide for formatting technical documentation (HOWTOs related to CentOS servers) using ASCII text only ? Markdown and/or AsciiDOC are *not* an option, since these documents should be easily readable in a text console. Cheers from the sunny South of France, 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

4 3

enp0s25 disconnect
by Michael Hennebry 04 Nov '20

04 Nov '20

I tried to boot a Centos 8.2 install CD, one burned with Centos-8-2-2004-x86_64-boot . In the setup, it persisted in telling me that ethernet thing enp0s25 was disconnected. Nyet. 'Twas working several seconds previous and is working now. This is a showstopper. How do I debug it? Also, whatever else it did, I now have environment variable HOSTNAME=2001-48F8-3004-2CE-1AE9-F1BF-8759-FF4C-dynamic.midco.net . It shows up on my terminal window headers and as part of the prompt on one terminal. WTF is going on? -- Michael hennebry(a)web.cs.ndsu.NoDak.edu "Sorry but your password must contain an uppercase letter, a number, a haiku, a gang sign, a heiroglyph, and the blood of a virgin." -- someeecards

2 3

dnsmasq centos 7
by Jerry Geis 03 Nov '20

03 Nov '20

HI I setup dnsmasq on my computer. I tested with an entry in /etc/hosts for laptop.w530 I tested with "host laptop.w530" and I get unresolved (expected). If I add "nameserver 192.168.1.8" (my computer) to top of /etc/resolv.conf and do "host laptop.w530" I get 192.168.1.105 - so seems to be working. Then I goto another machine, add the "nameserver 192.168.1.8" to /etc/resolv.conf and do the same "host laptop.w530" and it does not resolve. I can "telnet 192.168.1.8 53" to my machine and I get a response. Am I missing something to have "other" machines ask my machine for name resolution ? Thanks, Jerry

5 7

ThinkStation with BIOS RAID and disk error messages in gparted
by H 03 Nov '20

03 Nov '20

My ThinkStation runs CentOS 7 which I installed on a BIOS RAID 0 setup with two identical 256 Gb SSDs after removing Windows. It runs fine but I just discovered in gparted something that does not seem right: - Launching gparted it complains "invalid argument during seek for red on /dev/md126" and when I click on Ignore I get another error "The backup GPT table is corrupt, but the primary appears OK, so that will be used." I then click on OK whereupon I again see the second error message. I then see "Not all of the space available to /dev/sdb appears to be used, you can fix the GPT to use all of the space (an extra 6832 blocks) or continue with the current setting? " I click on Fix but nothing seems to happen. I am not sure what /dev/md126 is but it is the exact same size as sda and sdb which I believe are the two RAID disks. I also have two other hard disks which seem to be fine, one using XFS, the other ZFS. Does this look familiar to anyone? Given the error messages it seems this is something I ought to fix sooner rather than later. Any idea what I should do? Thanks.

3 4

Odd issue happening CentOS 7
by Jerry Geis 02 Nov '20

02 Nov '20

So I have two CentOS 7 machines running. if I am on my server and I do "curl http://192.168.1.8" I get data. If I do "host devgeis.LayeredSolutionsInc.com" I get the correct address 192.168.1.8 if I goto another machine with CentOS 7. I do "curl http://192.168.1.8" I get data. I do "host devgeis.LayeredSolutionsInc.com" I get the correct address 192.168.1.8 BUT then I do "curl http://devgeis.LayeredSolutionsinc.com" I get "nothing" BUt then doing the -v with "curl -v http://devgeis.LayeredSolutionsinc.com" * About to connect() to devgeis.LayeredSolutionsinc.com port 80 (#0) * Trying 198.168.1.8... So why when using the name is it not giving me the index.html page ? Should not be a firewall issue - as the actual address worked. Also I tried stopping the firewall - and all the above is the exact same. What is possibly happening here ? Thanks Jerry

4 4

Jump to page:

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

Discuss