Unanswered Questions
2,576 questions with no upvoted or accepted answers
9
votes
1
answer
5k
views
How to enable systemd user sessions for remote logins on CentOS 7?
I am trying to enable systemd user sessions on my CentOS 7 server. All the pieces seem to be there, and I have also run loginctl enable-linger <user>, but I don't have a systemd user session (or ...
CommunityBot
- 1
6
votes
2
answers
10k
views
realm command doesn't work correctly when used in script (CentOS 7)
I try to automate the authentication on CentOS 7 Hosts over my AD with the realm commands.
It totally works when I execute the following commands by myself.
$ yum -y install realmd oddjob oddjob-...
CommunityBot
- 1
6
votes
1
answer
4k
views
gksu replacement
In the old days of CentOS 5, I had an application that ran as another user.
I created a .desktop file which ran a command that looked like this:
gksu -u anotheruser someapplication
When the user ...
CommunityBot
- 1
6
votes
2
answers
14k
views
CentOS 7 cpupower not setting the CPU's to maximum
On my machine, i have power savings disable on the BIOS. When I run Ubuntu on this machine, the CPU's are running maximum at 2100 MHz.
However, when I'm running CentOS 7, even with the scaling ...
CommunityBot
- 1
5
votes
1
answer
1k
views
What are data integrity / bit-rot protection options on CentOS 7?
I have a 2 disk CentOS 7 machine build that I need data integrity / bitrot protection on. How can I achieve this?
Note from my reading btrfs,zfs and DM-Integrity does not seem to be options.
Btrfs ...
- 28.8k
5
votes
0
answers
3k
views
sudo prompt won't let me submit my sudo password
When I ssh into my CentOS 7 machine and try to use sudo, I'm unable to submit my password.
Example prompt:
$ sudo ls
[sudo] password for edwardloveall:
Then I type my password, hit Enter, and ...
- 151
5
votes
2
answers
452
views
Netbeans fonts have distorted between CentOS 7.2 and 7.4
I'm having problems with Netbeans (programming IDE, written using Swing) on CentOS 7.4. It worked fine on 7.2 but we upgraded some kernel modules.
Since then some of the fonts within my Netbeans have ...
- 3,264
5
votes
1
answer
5k
views
using overlay2 on CentOS 7.4
How do I install and enable the overlay2 storage driver on CentOS 7?
I have done many google searches on this and I see that version 7.4 is required. So I typed the following commands to confirm ...
CommunityBot
- 1
5
votes
0
answers
2k
views
Shielding CPU from scheduler - How to move bound kernel threads from cores?
Suppose I have 4 physical cores (indexed 0-3) and I'm dedicating cores 1-3 to a shield for user applications and trying to steer all system threads onto core 0. I'm following the answers here and ...
- 485
5
votes
2
answers
3k
views
Backup and restore of Centos network interfaces
I have a server running Centos 7 which needs to be rebooted to upgrade some software.
Some of the physical NICs have around 5-10 VLAN interfaces each. They're subject to change on a weekly/monthly ...
CommunityBot
- 1
5
votes
0
answers
9k
views
How to install X window system for a minimal desktop?
On a server running CentOS 7, how to make a minimal install of the X window system?
The idea is to build a very minimal desktop that the end-user will use with only one software for backups. No need ...
- 1
5
votes
0
answers
13k
views
xclip Outputs "Error: Can't open display: (null)"
I recently installed xclip on my CentOS 7 server. Since my machine does not have an X server, I'd have to configure my machine to forward X11 to my client.
Following the steps explained in this ...
- 249
5
votes
1
answer
4k
views
CentOS 7 won't start after recent update?
Last night I got some updates through yum on my CentOS virtual machine, which also updated the kernel. I tried booting it again about an hour ago, and I haven't been able to successfully start it.
I'...
CommunityBot
- 1
5
votes
1
answer
2k
views
SMTP Server Dovecot / Exim Authentication error
Recently, I've installed the centOS 6. The purpose of the installation to use this server as Mail server. Where I've installed Exim version 4.84_2 #1 and Dovecot.
I've followed this blog post and I'...
CommunityBot
- 1
5
votes
2
answers
2k
views
Job queueing on a single machine
I have a shiny new server for running simulations on, with a pair of Tesla GPUs and 32 cores, running CentOS 7.2. I'd like for multiple users to be able to submit jobs to the server that get queued up ...
CommunityBot
- 1