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.
1,123
questions
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2
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Can we clean yum cache files manually?
I am using Redhat 7 while running yum update I am getting Bus error (core dumped) error.
After troubleshooting I found that / was full because of /var/cache/yum/x86_64/7server/rhel-x86_64-server-7/gen ...
- 3,963
0
votes
0
answers
137
views
How to switch to a root user from a custom user without password or keyless switch to root user on RHEL?
I wanted to assign a certain functionality to one of the custom users created on a linux based machine. It is to allow to switch to root without the providing the password.The motivation is simple i ...
0
votes
1
answer
876
views
Jenkins stops responding after trying to run a job
I'm currently trying to repair a Jenkins installation, something I've never done before, and am having trouble. I've gotten to the point where I can view all of the jobs and run a build. However, most ...
- 33
0
votes
0
answers
278
views
What happened to psutils?
Earlier this year I was able to install psutils package on RHEL with yum.
Now I am getting "No package psutils available."
Is there a way to find out what happened to it and if there is a ...
- 273
0
votes
0
answers
51
views
Can I write to a Windows network share from Linux (RHEL 8.2) without sudo rights?
There is a network share with an address that looks like \\my_network_share\folder1$\folder2\folder3. I have an application under RHEL 8.2 that needs to write files to this share.
From the ...
- 123
1
vote
0
answers
169
views
Cgroup instance not creating “net_cls.classid” file
After creating cgroup i can see it is listed under 'lscgroup'
cgcreate -g net_cls:123456
#lscgroup | grep 123456
net_cls,net_prio:/123456
But no child files got created under /sys/fs/cgroup/net_cls/
...
- 111
2
votes
1
answer
4k
views
yum + skip broker or exclude rpms
during yum update on one of our rhel 7.6 server we get the following error
--> Finished Dependency Resolution
Error: Package: libtirpc-devel-0.2.4-0.6.el7.x86_64 (installed)
Requires: ...
- 839
0
votes
2
answers
806
views
Can I install redhat rpm on centos?
Can I install the Red Hat 6 version of the Openssl.rpm on the Centos6?
I am trying to backup and install an old version that can no longer be found in current repository.
I found the centos package ...
- 1
2
votes
0
answers
1k
views
rhel + dmesg + Buffer I/O error on dev dm-0, logical block
we installed some new VM machines with rhel 7.6
but from dmesg we found the following errors
[14706.075255] sd 1:0:0:0: timing out command, waited 1080s
[14706.075370] sd 1:0:0:0: timing out command, ...
- 839
0
votes
1
answer
447
views
which iso file to download in order to upgrade rhel from 7.2 to 7.6
we have 762 linux rhel servers with version 7.2
we want to upgrade all servers to rhel 7.6 but off-line ( without network )
from redhat site - https://access.redhat.com/downloads/content/69/ver=/rhel--...
- 839
1
vote
1
answer
60
views
RedHat Virtualization Manager | Spice access from different subnets
I have the following I think unusual setup:
The RedHat Virtualization manager and host are hosted on the same hardware, and are using on hardware. The Manager is dualhomed: one virtual nic for the ...
- 11
0
votes
1
answer
173
views
How to kill running Ports using Linux Console?
In my scenario I am try to run Django code using
~$ python manage.py runserver command. While running it, I get:
port 8000 already running
How can I kill the running process of port number?
- 331
0
votes
1
answer
3k
views
Why can I not ssh into RHEL 8.2 when sshd is running and port 22 shows it's open?
I installed RHEL 8.2 with a free developer license (bare hardware), it looks like sshd is installed, running by default with port 22 already open, I did not have to do anything to install sshd or open ...
0
votes
1
answer
760
views
Dose docker container cause slow Disk/OS performance
We have 3 servers , that installed with RHEL 7.6 version
The machines are DELL physical machines with spec as RAM = 64G and CPU = 16
We prepare to install the services - kafka/zookeeper/schema ...
- 839
2
votes
0
answers
479
views
CENTOS 7.2 + installing docker on OS with XFS file system
We have 12 machines with CentOS 7 servers ( VM servers ) where the root file system is XFS (created with ftype=0, default CentOS setting at the time the system was installed).
And we want to install ...
- 839
0
votes
1
answer
255
views
CentOS 7.8 installation on HP Envy x360 laptop aborts on partition definition
I'm trying to install CentOS 7 on HP Envy x360 laptop.
However, as soon as the 'Done' is clicked in the 'Partition Definition' stage, the installation is aborted with the following messages.
How to ...
- 1,143
1
vote
1
answer
4k
views
why this is bad to use XFS file-system without d_type support , regarding to docker
from docker documentation we can see the following https://docs.docker.com/storage/storagedriver/overlayfs-driver/#prerequisites
Warning: Running on XFS without d_type support now causes Docker to ...
- 839
0
votes
0
answers
134
views
problems with usernames in docker
Good afternoon, I am currently configuring the user name for my containers in the daemon.json file and following the tutorials that I post below:
I am using the following documentation:
https://docs....
- 101
1
vote
2
answers
208
views
Website to check if laptop/GPU is certified for CentOS/RedHat Linux? [closed]
Is there a website where I can check if a laptop, or a graphic card, is certified for a certain version of CentOS/RedHat Linux?
E.g.,
Is an HP Envy x360 2-in-1 Laptop certified for CentOS 7.8?
Is an ...
- 1,143
0
votes
0
answers
120
views
Can the power button be reassigned in red hat 8 gnome?
I don't mean the physical power button, but the dekstop power button one would use to power off or reboot the system.
I guess, that if you click on reboot, or shutdown, internally it probably just ...
- 1
0
votes
0
answers
917
views
Installing Yum via SSH on a server hosted by GoDaddy
The problem is that GoDaddy's RedHat Linux hosting fails to come with either apt-get or yum pre-installed for package management. I need either of those to get started on installing java and other ...
- 1
2
votes
0
answers
727
views
rsyslog stopped forwarding httpd logs after logrotate
I have an issue where rsyslog stops forwarding httpd logs to our central log repo after logrotate. Server is RHEL7. My investigations thus far have led me here:
(in /var/lib/rsyslog)
#: grep httpd *...
- 21
1
vote
1
answer
71
views
How do I stop a script from finishing if certain text is printed?
I am trying to automate domain join but want to make it so you cannot run some commands twice. I am trying to stop the script if the domain is already joined. Printed text if domain is already joined: ...
- 13
0
votes
1
answer
3k
views
How to mount dynamic disks in Fedora
I'm dual booting Windows 10 and Fedora. One of my drives I made into a dynamic disk without knowing the consequences. It is a drive I use exclusively for storage so I would like to know how I would go ...
- 21
1
vote
1
answer
839
views
Obtaining Day Count Until Local User Password Expiration in Linux Bash Script
I am using RHEL 6.9.
How may I obtain, in a Bash script, the count of days until the expiration of a local user's password?
I have tried:
chage -l <username>
passwd -S <username>
Neither ...
- 1,019
5
votes
1
answer
2k
views
How does WSL[2] pose limitations on a guest linux system?
As soon as I got WSL2 on my Windows PC, I installed an adapted CentOS 8.2 version. As I explored it, I found that I could read and write in the host's NTFS file system out of the box. It was also ...
- 151
0
votes
1
answer
1k
views
Shutdown of RHEL 6.9 / 7.7 NFS Client Hangs when NFS Server has Become Unavailable
I am running a mix of RHEL 6.9 and 7.7 hosts. These hosts are all NFS clients.
I am having a shutdown problem related to unmounting of NFS shares that were set up in /etc/fstab (i.e. not automounted). ...
- 1,019
0
votes
1
answer
549
views
Can't SSH to server using Private Key [duplicate]
I am trying to login to my server using SSH using private key file.
I am using below command to SSH
ssh -C -vvv -o ControlMaster=auto -o ControlPersist=60s -o 'IdentityFile="/root/.ssh/id_rsa&...
1
vote
1
answer
645
views
VMWare Player doesn't start with NAT
I'm trying to do Kioptrix Level 1. With a bridged network connection the eth0 interface fails to start with the following error: Determining IP information for eth0.... Failed.
I tried changing it to ...
- 329
1
vote
0
answers
340
views
Intermittent issue of receiving emails when emails are sent using "mutt" email client in Linux
To send an email to a specific set of users, I am currently using mutt (command line based email client).
Below is the command that I have used in my shell script to send an email:
echo "Initiating ...
- 11
2
votes
1
answer
10k
views
Identify private or public ssh key
I have few keys in ~/.ssh directory. I need to identify whether the files in this directory is private key or public key without depending on the .pub extension (because keys could be renamed and used)...
- 183
0
votes
3
answers
1k
views
sed + how to replace numbers with parenthesis with sed/awk/other
we want to relapse the [1023,1024,1022] as described in the following file , with [1022]
more file.exm
{"topic":"nj_hgf_dfgef","partition":0,"replicas":[1023,1024,1022]},
{"topic":"nj_hgf_dfgef","...
- 839
1
vote
0
answers
498
views
IP Forwarding in is not working in a Linux VM IPtables
I am trying to use IPtables and it's NAT functionality in a Linux VM to make a network connection work I have a RHEL Linux Box. It has two interfaces eth0 & eth1. I have a Windows Servers behind ...
- 11
0
votes
1
answer
506
views
OpenSSL Timestamp log location
I am trying to debug an openssl ts based perl http server. The server logs display an openssl ts -reply command failing with exit code 1.
Where can I see the logs related to this openssl command, or ...
- 1
0
votes
1
answer
3k
views
pip on Python 2.7 in RHEL using yum
I have tried to install pip for Python 2.7 on RHEL using sudo yum install python3-pip, and, while the installation gets completed, when I try to run pip it says that command is not found.
yum list ...
- 1
5
votes
1
answer
21k
views
Samba Configuration on RHEL 8.2: SMB1 disabled -- no workgroup available
I've been taking a crack at configuring Samba to allow my Guest OS (RHEL 8.2), running on Oracle VM VirtualBox 6.1.8, to talk to my Host OS (Win10) following this guide here. Unfortunately, using a ...
1
vote
1
answer
692
views
yum: Identifying Packages where Installed version-release is Newer than Repo version-release
I manage my RHEL 6 / 7 systems with yum pointed at a local repository that is a replica of the official repository from Red Hat.
Other people have installed newer versions of some packages as follows:...
- 1,019
0
votes
2
answers
149
views
Overwhelmed by Linux [closed]
I really love Linux, and have gone through RHCSA and have a solid foundations over the concepts. But my problem is that i tend to forget some commands after some time, despite i'm really sure i ...
1
vote
0
answers
403
views
yum + Multilib version problems found
we are installing now docker on rhel 7.2 version
during yum install we see the following
--> Finished Dependency Resolution
Error: found. This often means that the root
cause is ...
- 839
0
votes
0
answers
25
views
SFTP issue PAM drops session REDHAT
I'm currently troubleshooting a issue with a sftp server, users aren't able to log into the server and I don't see anything wrong with the sshd_config file. When users try to log into the service they ...
0
votes
1
answer
11k
views
Download ISO file from redhat site
we want to download from redhat site rhel 7.6 ISO file in order to install docker ( https://nathancatania.com/posts/installing-docker-on-red-hat-with-no-internet-access )
redhat site - https://access....
- 839
0
votes
1
answer
42
views
assistance in grep-ing a file for "!!!"
I am attempting to search a large file for the lines which contain the string !!! and output those lines to a different file.
However, the shell is interpreting the !!! as a shebang and inserting my ...
- 103
0
votes
0
answers
126
views
/etc/udev/rules.d/70-persistent-txqueulen.rules - file not generated
I have executed the below salt command, it is working fine but the file is not generated (/etc/udev/rules.d/70-persistent-txqueulen.rules )
salt '*Sriov*' cmd.run "printf 'KERNEL==\"tap[0-9,-,A-Z,a-z]...
0
votes
0
answers
536
views
what is the right approach to count the open files
what is the real way to verify open files
what we do is that
lsof | sort | uniq >/tmp/file
so /tmp/file include all open files
and the number of open files can be identified by
wc -l /tmp/...
- 839
1
vote
0
answers
3k
views
TLS 1.2 connection with lftp
I'm trying to connect to a server from my RHEL 7 server that only accepts FTPS, TLS 1.2 connections. The only client available seems to be lftp. When I try to connect, it hangs on "TLS negotiation......
- 11
0
votes
0
answers
435
views
user with restricted bash: sudo su works but su doesn't
I'm creating an user with restricted bash. I've blocked all commands except few commands as per a requirement.
Now if I want to change to root using su - root, even with correct password, it says ...
- 127
1
vote
0
answers
68
views
Not able to install any package in Redhat linux
I'm trying to install php or any other package getting below issue
[root@xxxxxx xxxxx]# yum install php
Loaded plugins: rhnplugin
This system is receiving updates from Spacewalk server.
Repository ...
- 111
0
votes
0
answers
371
views
Cannot post request to localdomain 127.0.0.1:80 in RHEL7
When I try to post request to 127.0.0.1, it shows error as:
Post http://localhost/users: dial tcp 127.0.0.1:80: connect: connection refused
I have tried following:
Wget:
wget 127.0.0.1
--2020-04-...
0
votes
0
answers
834
views
How to boot Centos 8 with volatile root overlay filesystem?
Generally, I am looking to boot a Linux box so that the persistent storage is immutable. Any changes made to the filesystem should be lost when the box is powered off.
This is for system where the ...
0
votes
1
answer
553
views
Can't ping from windows to linux laptop in different network
I have a windows 10 laptop connected to mobile hotspot and my rhel 8 laptop connected to my wifi,
when i ping from my windows laptop to linux laptop getting request timed out.It might be a silly ...
- 1