Questions tagged [redhat-enterprise-linux]
Use for questions about Red Hat Enterprise Linux (RHEL), a Linux distribution from Red Hat intended for enterprise use. Note there are version-specific RHEL tags for questions unique to a specific version. Use a product-specific tag for questions about other distros in the Red Hat family, like Fedora or CentOS.
1,121
questions
0
votes
0
answers
45
views
Changes in keyboard layout. Is that per user or globally?
We work with international teams.
So we have RHEL servers with multiple keyboard layouts.
If I change the layout of my keyboard, does this changes for other users on the same server aswell?
If so is ...
0
votes
1
answer
30
views
brew install fails with "no space left on device" on RHEL 9, how do I fix it?
I'm not so familiar with how to solve issues like this, anyone knows what might needs to be done to fix this?
[randomusr@jumphost ~]$ brew install hello
==> Downloading https://ghcr.io/v2/homebrew/...
0
votes
0
answers
22
views
RHEL 8 -- Configure TigerVNC server so it will start user sessions only if they try to connect
I configured TigerVNC server on RHEL 8 according to the instructions provided by RedHat and IBM. I have configured it for several users and everything seems to be working fine.
The problem is that ...
0
votes
0
answers
30
views
YARN resource manager "HTTP request sent, awaiting response..."
we have Hadoop cluster with active/stand by resource manager services the active resource manager is on master1 machine and the stand by resource manager is on master2 machine
in our cluster YARN ...
0
votes
0
answers
26
views
RHEL 8.6 - pgrep hangs
I have an issue with pgrep which hangs and doesn't return anything.
The problem is that I'm not even sure where to start debugging.
Could anyone suggest anything?
Thank you.
0
votes
1
answer
63
views
Can't connect USB 3.0 storage device to my RHEL 8.8 VM
System details:
RHEL 8.8 VM
ESXi 6.5
Problem: Attaching my USB to the VM as a storage device.
The USB port on my laptop is a 3.2. The USB key is a USB 3.0.
When I try attaching it to the VM, I get ...
1
vote
0
answers
37
views
Why is my alias command doing nothing?
It's not that trying to run the alias doesn't do what I expect. The alias command itself appears to do nothing.
If I try to do:
alias python2='python3'
alias | grep python
I get two blank outputs. I ...
7
votes
3
answers
4k
views
how to solve: ssh "Connection corrupted" error
On a Oracle/RedHat VM that I use every days (probably after the nightly upgrades) I've this authentication error:
$ ssh machine
Bad packet length NNNNNNN. ssh_dispatch_run_fatal: Connection to A.B.C.D ...
0
votes
0
answers
27
views
Creating a hybrid SELinux policy for a specific directory?
I have a machine "NFS-Server", a machine "Hybrid", and a machine "TFTP-Client" which I would like to connect in the following way:
NFS-Server allows Hybrid to mount to a ...
0
votes
0
answers
52
views
PuTTY script reading a list? [duplicate]
Is there a way in PuTTY to run a script that will read a file of names and then answer a prompt of yes (per name)?
It is a Red Hat Linux backend server that I am connecting too.
At times I can get a ...
0
votes
0
answers
62
views
vmstat + on RHEL machine high values of swpd
The swpd field indicates how much swap space has been used; this value increases when your systems physical memory is full and the Linux kernel starts to use the swap partition/file. When the systems ...
0
votes
0
answers
45
views
tar give exception when preserve permission/specials files across filesystems
I am using the following tar command and tar flags in order to preserve hard and symbolic link & permissions on RHEL 8.6 version
but we get the exceptions about tar: '--same-order' cannot be used ...
0
votes
0
answers
15
views
Pulse Audio Not Working With X-Forwarding
I'm using Virtualbox VM's. Both host and VM's are running Red Hat 6. When I open the VM, I am able to hear audio from the VM.
However, there is a need for the windows on the VM to be X-Forwarded to ...
0
votes
0
answers
148
views
add capacity using LVM system
my current /home directory is lack of storage so i want to add capacity to LV. want to confirm if my execution plan will not distroy the existing system.
Here is the current disk status:
df -h
/dev/...
0
votes
1
answer
70
views
why fdisk -l /dev/sdX not show under system the "Linux LVM"
from fdisk -l /dev/sda , we got the following
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 2099199 1048576 83 Linux
/dev/sda2 2099200 ...
0
votes
0
answers
60
views
Are there alternative methods for installing Video4Linux (v4l) and Linux DVB (DVB) drivers for RHEL 9?
In RHEL 9, Video4Linux (v4l) and Linux DVB (DVB) devices television and video capture devices are no longer supported. https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/9/html/9....
0
votes
0
answers
98
views
RHEL + kill -9 not really killing the process
We have around 85 running process with lshw
Since these process increased the CPU load average ,
We tryed to kill them with kill -9 but without success
root 3275 0.0 0.0 131720 8992 ? D ...
0
votes
1
answer
137
views
disk util is very high + what the proactive steps we can do in order to minimize it
Our Kafka cluster includes 12 VM RHEL 7.6 machines.
machine spec details:
CPU(s):14
Kafka disk is VMDK disk. ( sdb disk)
RAM 48G
When Kafka cluster is working hard (when injection data to Kafka ...
0
votes
1
answer
41
views
Tmux conf returns error at start
I ssh to a remote server with TMUX. The .tmux.conf file is very simple:
setw -g mode-keys vi
set -g status-right '#(TZ=Asia/Kolkata" date +"%%Y-%%m-%%d %%H:%%M")'
And the relevant ....
1
vote
0
answers
54
views
SCP silently ignored on the remote machine
When I'm trying to copy a file using scp (in whatever direction), there's no error displayed (although the returned $? code is 1), all I can see is the message that normally the REMOTE machine prints ...
1
vote
0
answers
125
views
Why is sudo taking a long time to execute
When running commands with sudo it always takes about 4 or 5 seconds for the command to run even something as simple as echo test.
I am running rhel 9.
After looking at some other question I ran sudo ...
0
votes
0
answers
608
views
Adding default route permanently
I need to add a default route permanently in rocky Linux. The VM that I am using does not have a physical NIC and it cannot have one (for security reasons). That means when you run nmtui you do not ...
0
votes
0
answers
108
views
"javac is not recognized as an internal or external command, operable program or batch file" error; PATH methods failing
I'm taking Data Structures right now and I've been having issues with Java on and off throughout, but now it just won't work on my computer anymore.
I downloaded the Eclipse Temurin JDK 17 for Windows ...
1
vote
0
answers
152
views
How do you reset a Linux host to its first-boot state?
We are building a generic deployment image and I want to clean/delete all the host-specific details. (This a RHEL8/Oracle 8/Alma 8 system.)
This is what I have so far:
# rm -rf /etc/.etckeeper/* # if ...
0
votes
1
answer
171
views
Loading a module in a bash script on an HPC cluster
I am submitting the following bash script with qsub on a standard university cluster,
#!/bin/bash
#$ -cwd # Set the working directory for the job to the current directory
#$ -pe smp 1 # ...
0
votes
1
answer
305
views
linux + how to set auto-negotiation: No from Linux machine side
we have the following NIC configuration. from ethtool , ( the server is RHEL 7.9 version )
ethtool p1p1
Settings for p1p1:
Supported ports: [ FIBRE ]
Supported link modes: 10000baseT/...
0
votes
0
answers
40
views
RHEL 8.8 Freezing randomly after installing nvidia drivers
Hello apologies if this isn't the right forum to ask this on but I'm not getting an RHEL subscription, so I thought this community could help.
I am running RHEL 8.8 on my ASUS Vivobook pro 14 OLED ...
0
votes
0
answers
90
views
recover user if user gets delete by mistake
I used command "userdel " for delete user but that user environmental file has not deleted then how can I get back that user
0
votes
1
answer
78
views
How find a fileset install date on RHEL after an OS upgrade
I have a fileset installed months ago, and I need to find the exact date.
My first shoot was rpm -qa -- last | grep myfileset however, the OS was recently upgraded (much after the fileset was ...
0
votes
1
answer
87
views
linux + why command output cant be filter or can saved in file
clockdiff is command that measure clock difference between hosts
here is example from my Linux machine.
clockdiff -o 162.23.2.2
.
host=server11 rtt=750(187)ms/0ms delta=0ms/0ms Tue Oct 24 11:01:42 ...
0
votes
0
answers
572
views
Installing Apps on Alma Linux
I started Linux since 2000 on Suse Linux that time.
At that time there was only installing from RPM, no Flatpacks or AppImages.
I recently installed Alma Linux (9) for it is based on RHEL and vey ...
0
votes
0
answers
38
views
RHEL + what could be the root cause for very high await
we have Kafka cluster servers ( 11 Kafka servers )
each server is RHEL 7.6 with 32 cores (physical DELL server)
Kafka server include the OS - dev253 disk and the Kafka disk - dev8
from sar -d we can ...
1
vote
0
answers
33
views
finer-grained role/type access (specifically auditd_log_t)
Suppose I want to use SELinux to lock down audit logs even more tightly than ordinary logs. Ordinary logs typically have type var_log_t, but audit logs have type auditd_log_t. So there's at least a ...
0
votes
2
answers
741
views
VLC media player installation on RHEL 9
Please help me to install VLC media player on Red Hat Enterprise Linux 9. I tried these installation steps, but they failed.
I tried to skip few packages during the installation too, but I could not ...
-1
votes
1
answer
90
views
can a faulty hard disk make my CPU IDLE so low
we have couple RHEL servers ( RHEL version 7.2 ) with very low CPU idle as the following.
our suspicion is about the disks as for example sdk and sdc and that because we saw from dmesg errors as [sdk] ...
0
votes
0
answers
80
views
Maping a Linux Drive on Windows 2016
I have a Red Hat Linux 8.7 server (87server) with an exported disk (bigdata).
On my Linux network, I can mount the drive with no problems:
mount /mnt/bigdata 87server:/bigdata
The access to the ...
0
votes
0
answers
3k
views
mount -t cifs + mount error(13): Permission denied
we have windows server with IP address - 98.12.23.34 and with folder max_stage
from windows browser its looks like:
This PC > max_stage(K)
and we want to mount the WIN folder max_stage to /mnt/...
0
votes
0
answers
219
views
Connection to Globalscape EFT ssh server from RHEL8 fails with "Permission denied (publickey)"
I am attempting to connect from RHEL8 to a Windows 2016 Server using Globalscape EFT as ssh service.
[acoder@rhel8]# ssh [email protected]
EFT Login - %DATE% %TIME% - Please enter ...
0
votes
0
answers
486
views
In system logs, what does it mean by: systemd: Removed slice User Slice of
On a RedHat Linux host, we are getting concerned with the behavior of a user, e.g., USERNAME.IN.CONCERN. And in the system log file /var/log/message, we see records like below.
Our Question:
What does ...
0
votes
2
answers
390
views
linux + how to verify the dynamic ports allocation settings
How to know the range for the allocation of dynamic ports on red hat Linux machine
From Linux we did
sysctl -a | egrep "net.inet.ip.portrange.first|net.inet.ip.portrange.last"
but those ...
2
votes
1
answer
484
views
How to reserve port number and avoid other applicationsto use this specific port number?
We have a Linux machine running RHEL version 7.9.
In this machine, we have installed the Ticktok service, which uses the port number 4590.
Sometimes the service stops and doesn't use port number 4590.
...
0
votes
0
answers
408
views
Install qt 5.15 onto CentOS 7
I have a program I want to compile on Red Hat 7.8 which uses Qt 5.15 features, yet the last available Qt 5 library (from repo's) is Qt 5.9
How can I install Qt 5.15 on CentOS 7 to compile my program?
...
0
votes
1
answer
88
views
Can't ping in RHEL 7 in VMware pro
Image of the network card configuration:
This is RHEL - 7 in VMware-workstation 17 pro, I'm trying to ping the gateway of the same IP and google.com. I have no idea what's the issue as my friend uses ...
0
votes
0
answers
375
views
curl not working on an RHEL8 Server
I have 3 running RHEL 8 VM's as Servers connected to my Company's network and for Setup purposes I need to download a script using curl.
The VM's are properly connected to the internet for example I ...
0
votes
0
answers
9
views
How do I connect a Dockerised NodeJS server application to external clients and databases?
I've an existing NodeJS server application:
Deployed in a RHEL7 VM
Clients make HTTPS POST requests to the REST API via a URL e.g., https://example.url.xxx:3000/api/endpoint
In-app middleware code ...
4
votes
1
answer
1k
views
No module named yum when working on RHEL 8
Since our application works with python2, we needed to move to RHEL 8
After we installed python2 on RHEL 8 machine, we see the following:
rpm -qa | grep python2
python2-pip-9.0.3-19.module+el8.6.0+...
2
votes
1
answer
836
views
Update OS Via Ansible Determine What Distrubution Major Version
I've created an Ansible role that consists of no more than tasks and some variables. Probably overkill at this point but I plan to expand on the role sometime in the future. I'm attempting to first ...
0
votes
1
answer
210
views
RHEL 7.x machine with very low CPU idle + how to set idle threshold
we have cluster of RHEL 7.9 machines, we are using this server as kafka client producers.
each machine have the following spec (DELL physical machines)
48 CORES
128G memory
on most machines we saw ...
0
votes
0
answers
48
views
Permission denied error for docker build command on RHEL
I'm trying to build a docker image using Azure Pipelines. At the build step, I got the below error.
Got permission denied while trying to connect to the Docker deamon socket at unix:///var/run/docker....
0
votes
0
answers
35
views
vdo on a ramdisk vs on an ssd
I have ramdisk created with vdo in redhat like this as a systemd service mounted during bootup in /etc/systemd/system/my_lv.service
vgcreate my_vg /dev/ram0; \
lvcreate --type vdo -n my_lv -l ...