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.

Filter by
Sorted by
Tagged with
-1 votes
1 answer
39 views

Samba Shares Fail - Pre-Authentication Failed

Good day, We have multiple HPCs (RHEL, CentOS, Ubuntu) running samba shares so that user can easily transfer files back and forth. About 3 months ago, the DCs/AD got a refresh, redundancy (2 servers) ...
2 votes
1 answer
6k views

error: zlib library and headers are required R on HPC

System: Red Hat Enterprise Linux Server release 6.5 (Santiago) I’ve installed zlib 1.2.11 on the home folder of a Red Hat HPC as part of the process for installing R base 3.4.0. I get this error ...
1 vote
2 answers
7k views

Can not get vncserver to start on rhel 7

Good day I'm running RHEL 7.6 with kernel version 3.10.0-514.el7.x86_64. Vncserver version is tigervnc-server-1.8.0-17.el7.x86_64. My vncserver@:1.service file looks like this, I have replaced <...
0 votes
0 answers
51 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
38 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/...
3 votes
3 answers
2k views

How can I correctly check on what network interface SSH is listening on a Linux machine?

I am not a system engineer or a network expert (I am more a software developer) and I have the following problem that I have to solve. I am working on an Oracle Linux machine (basically it should be ...
0 votes
1 answer
18k views

cannot open `' for reading: No such file or directory

I am trying to run .sh file on RH6 and getting this error... cannot open '' for reading: No such file or directory The script I am running is internally referencing other scripts, located in same ...
0 votes
0 answers
28 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
31 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 ...
1 vote
1 answer
5k views

Do I need a daemon-reload after stop, disable and removing the service file in systemd

I have a custom service. I recently ported it to systemd for RHEL7. I usually stop, disable and remove the service file. Is that enough or do I need to do these also rm /etc/systemd/system/[...
0 votes
1 answer
77 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 ...
7 votes
3 answers
5k 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
30 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.
1 vote
0 answers
39 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 ...
1 vote
2 answers
9k views

How do I add a user to the wheel group in Redhat even if the user does not exist?

In SUSE the command groupmod -A "username" wheel will add any user, even if they don't exist, to the wheel group. In Redhat the -A argument does not exist. and other tools such as groupmems will not ...
5 votes
2 answers
5k views

Chromium won't play mp4

I have chromium (version 79) installed on my Red Hat 7.6 system and cannot play any mp4 videos. I attached an image below of what it looks like when I run chromium-browser <mp4 video>. I have ...
1 vote
2 answers
5k views

The "shmmax" value is too large when installing Oracle 11g on RHEL7

I am trying to install Oracle Database 11g Release 2 on RHEL 7.2. Executing runfixup.sh, it outputs: # /tmp/CVU_11.2.0.1.0_oracle/runfixup.sh Response file being used is :/tmp/CVU_11.2.0.1.0_oracle/...
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 ...
3 votes
1 answer
7k views

What does --allowerasing option in dnf command do?

I am reading a book which instructs me to install 5.24stream and minimal profile of Perl module by running... dnf module install perl:5.24/minimal --allowerasing Everything was explained in it except ...
0 votes
0 answers
29 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
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 ...
1 vote
1 answer
2k views

Cannot load mod_xml2enc Apache2 module

I'm installing reverse-proxy-related modules to Apache2 HTTPserver but mod_xml2enc module isn't found in module directory. How can I install in (Red Hat 4.4.7-23) with Apache/2.2.15 I'm having the ...
0 votes
1 answer
5k views

Kernel 4.4.1-1 fails to boot - root volume "does not exist" - 3.10.0.327 and 4.3.3-1 both continue to boot fine

I'm trying to install and boot kernel-ml (currently 4.4.1-1) on RHEL 7.2 following the instructions here: http://linuxg.net/install-kernel-4-x-on-enterprise-linux-7-centos-7-and-rhel-7/ Install works ...
0 votes
1 answer
5k views

one valid linux group missing in /etc/group but can be found in getent group

One weird problem. I'm trying to add one user(say myuser) to a group (linuxadmins), but get following error. sudo usermod -a -G linuxadmins myuser usermod: group 'linuxadmins' does not exist Then I ...
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 ...
1 vote
1 answer
5k views

Openvswitch: multiple virtual bridges over one bonding interface

My ultimate goal is to configure a RedHat 6.6 server with Openvswitch as shown in the following image: Interfaces configuratión files are: ifcfg-eth0 DEVICE=eth0 ONBOOT=yes NM_CONTROLLED=no ...
3 votes
1 answer
4k views

How to install packages on Linux without root-access?

For whatever reasons, root-capable administrators at our organization limit the choice of packages to the vendor's official "base" repository (RHEL). Not even EPEL is possible, much less IUS. Our ...
4 votes
2 answers
4k views

what's the difference between /etc/init.d/sshd start and /usr/sbin/sshd?

I'm having issues with passwordless ssh. I've checked, double checked and checked again that I have everything set up correctly. Both machines are RHEL6 and when the destination machine first boots ...
0 votes
0 answers
153 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
75 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
2 answers
773 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 ...
0 votes
1 answer
4k views

systemd service failed to start with errror : "main process exited, code=exited, status=3/NOTIMPLEMENTED"

I am getting below error when i start a systemd service [localhost.localdomain]-> systemctl status rcc_rccproxy.service * rcc_rccproxy.service - starts RCC Proxy process Loaded: loaded (/etc/...
0 votes
2 answers
4k views

Configure a static ip to a redhat vm on virtualbox

I have some questions about configuring a redhat vm on virtualbox. The installation id done. When i used the command isee that i have no ip adress for eth0. So i want to set static ip adress to my vm. ...
1 vote
1 answer
3k views

How to use yumdownloader to download specific version of a source rpm?

by using folloing command: yumdownloader --source 'package-name-without-version' It will only download the newest source rpm of said software. how do I download specified version of source rpm ...
0 votes
0 answers
68 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 ...
5 votes
3 answers
10k views

I can't connect to ms sql instance - internal

The Platform and Software versions I am using are as follows : Red Hat Enterprise Linux Server release 7.4 (Maipo) Microsoft SQL Server 2017 (RTM-CU3-GDR) (KB4052987) - 14.0.3015.40 (X64) Dec 22 ...
3 votes
2 answers
4k views

Something similar to inotifywait, without being able to install inotifywait

I wanted to continuously re-build and test projects, but just discovered my school's RHEL distribution doesn't come with inotify or inotifywait. Are there any alternatives I could use, which would ...
0 votes
1 answer
143 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 ...
1 vote
3 answers
1k views

I accidentally moved my /lib64. How do I fix this?

For some stupid reason, I thought it was a good idea to do sudo mv /lib64 /old_lib64. Now I can't do ANYTHING (not opening files, not starting new terminals, not even ls). The only thing I can do now ...
0 votes
1 answer
4k views

persist ethtool settings between reboots

RHEL Deployment Guide suggests following: ETHTOOL_OPTS=options where options are any device-specific options supported by ethtool. For example, if you wanted to force 100Mb, full duplex: ETHTOOL_OPTS=...
6 votes
1 answer
5k views

Differences in nc (netcat) options on Ubuntu vs RedHat

nc -q -1 local host ${PORT} ${CMD} In Ubuntu, nc may be used as above, with the -q option. See manpage. -q after EOF on stdin, wait the specified number of seconds and then quit. If seconds is ...
1 vote
1 answer
3k views

Anaconda kickstart Variables

I am have an issue where I am trying to store a user's input in the variable called $mail, in the %pre environment of anaconda, and then pass it into the %post script, where it will append to the file ...
1 vote
2 answers
5k views

UDP: bad checksum + from the dmesg

from the dmesg we see the following: UDP: bad checksum. From 34.21.56.68:4343 to 32.3.42.22:4343 ulen 20 UDP: bad checksum. From 34.21.90.186:4343 to 32.3.42.22:4343 ulen 20 UDP: bad checksum. ...
0 votes
1 answer
44 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
55 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
135 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
637 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
109 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
2 3 4 5
23