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.

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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 ...
ansible_usah's user avatar
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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/...
KungWaz's user avatar
  • 207
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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 ...
bpop's user avatar
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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 ...
King David's user avatar
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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.
Razvan's user avatar
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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 ...
Joseph Sabo's user avatar
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 ...
Devsman's user avatar
  • 137
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 ...
Ivan Buttinoni's user avatar
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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 ...
eakirk16's user avatar
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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 ...
johnism's user avatar
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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 ...
King David's user avatar
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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 ...
King David's user avatar
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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 ...
Geoff Greene's user avatar
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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/...
HelloFromWorld's user avatar
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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 ...
King David's user avatar
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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....
Howard Lum's user avatar
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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 ...
King David's user avatar
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 ...
King David's user avatar
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 ....
cat's user avatar
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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 ...
Ethouris's user avatar
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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 ...
Steven Teters's user avatar
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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 ...
Arnold Zahrneinder's user avatar
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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 ...
ScanVisor's user avatar
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 ...
KJ7LNW's user avatar
  • 383
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 # ...
apg's user avatar
  • 101
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/...
King David's user avatar
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 ...
Manish A G's user avatar
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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
Aman Singh Rajput's user avatar
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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 ...
Renato's user avatar
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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 ...
King David's user avatar
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 ...
limotux's user avatar
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 ...
King David's user avatar
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 ...
Steve Summit's user avatar
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 ...
Brijesh B Naik's user avatar
-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] ...
King David's user avatar
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 ...
Scottie H's user avatar
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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/...
King David's user avatar
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 ...
a coder's user avatar
  • 453
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 ...
James's user avatar
  • 349
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 ...
King David's user avatar
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. ...
King David's user avatar
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? ...
TSG's user avatar
  • 309
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 ...
Jigar Gupta's user avatar
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 ...
Oberwalder Sven's user avatar
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 ...
thegreatjedi's user avatar
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+...
King David's user avatar
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 ...
user2090974's user avatar
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 ...
King David's user avatar
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....
noonenine's user avatar
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 ...
munish's user avatar
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