Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

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.

0
votes
0answers
3 views

export mpicc in a bash script (for OpenFoam)

I am not able to execute this line: export PATH=/usr/lib64/openmpi/bin:$PATH; using a script and executing it directly or writing it to a file and sourcing the file: echo "export PATH=/usr/lib64/...
1
vote
1answer
30 views

How to remove traces of a deleted user

I have been tasked with removing departed employees' local *nix accounts. In almost all cases, userdel -r <username> works like a charm. However there are a few cases where the user in question ...
0
votes
0answers
11 views

Buildah error reading allowed ID mappings

I'm trying to convert from docker to podman/buildah/skopeo but I'm running into issues right out of the gate. I installed buildah (v1.5 1.5 image-spec 1.0.0, runtime-spec 1.0.0) on RHEL 7.6. When I ...
-1
votes
0answers
19 views

Server is non-responsive due to many close waits [on hold]

systemd-udevd process is giving many close waits and it is reaching to 400 or more. Due to this my server is non-responsive and load average reaches to 7. I am on AWS Ec2 with 4 core and 32 GB of ...
0
votes
0answers
11 views

Pacemaker High availability on dynamic NFS client mount point

I am trying to setup a Redhat cluster with N + 1 (N=active server) which has a standby server for HA. Each active server will have the same application path mounted on NFS. For example : NFS server ...
0
votes
0answers
4 views

wso2 (v. 2.5.0) - How to disable forum-link in STORE

I have disable the forum-link in STORE, but the this link still appears if you click on "manage alerts" in STORE. How can I disable this link too? Regards, Fredrik
1
vote
2answers
38 views

sleep() never terminates on Linux

I wrote a piece of code in C, using sleep(0.01);. For some reason the machine froze, and according to the backtrace it seems that it hangs on nanosleep() or __kernel_vsyscall (). (gdb) bt #0 ...
0
votes
1answer
22 views

Correct syntax in a script to append to .bashrc for root

I'm trying to script some things and cannot figure out the correct syntax to append to root's .bashrc file. For this script, I'm just trying to get it to display the hostname in red when we ssh into ...
0
votes
0answers
13 views

Using netlink, how to determine number of event notifications sent from kernel?

I work with netlink infrastructure to communicate with the kernel. For every rtnl_talk() request (see libnetlink), I expect to get notifications from the kernel to the user space, and I do get them. ...
0
votes
0answers
10 views

unable to switch user in rhel. The process gives “Killed” message

sudo su getting killed message. This issue we are facing for jenkins user. [root@ip-10-22-1-54 jenkins]# su - jenkins Last login: Mon Apr 1 06:22:43 EDT 2019 on pts/1 Killed
1
vote
0answers
25 views

Not able run Ansible HTPASSWD playbook for creating user's, because FIPS is enabled :-(

I am trying to run a Ansible playbook for adding few user's to HTPASSWD, Since FIPS(Federal Information Processing Standards) is enabled on it, I am getting error saying FIPS is enabled please ...
0
votes
0answers
13 views

JDBC Connection issue to SQL Server from RedHat Linux

I have two servers set up. Windows Server 2016 with MS SQL Server Installed. SQL Server is on and running on port 1433 on localhost as well as the IP of the computer and I made sure the in ...
0
votes
0answers
29 views

Mariadb on open-shift with persistent storage gives error?

My mariadb deployment on openshift OKD is failing with the following error. This only happens when I try to attach persistant storage to mariadb deployment. Ephemeral mariadb works fine. Can you ...
0
votes
1answer
17 views

Java application requiring LD_PRELOAD setting due to signal chaining says LD_PRELOAD is null

I am troubleshooting the failure of a larger java program on a server. However, I have been able to reproduce the problem with a super basic java program that just outputs the environment variable ...
0
votes
0answers
43 views

Excessive use of RAM by Oracle HTTP Server

I have a problem related to an Oracle HTTP Server (based on Apache) that continues to consume memory up to using all the available RAM. Do you have any advice on how to identify the problem? I'm in ...
0
votes
0answers
20 views

ps + kswap + with state D

we have redhat machines in cluster redhat version is - 7.2 when we perform ps ax on the machine we saw many kswapd0 with state D example 134 ? D 1099:58 [kswapd0] 134 ? D 1150:21 [...
0
votes
0answers
22 views

Installing Cacti 1.2.2 RHEL7 - php web vs php cli settings

Ok, I've tried to do my fair share of searching and googling but can't seem to find anything related to what this issue is as I try to install Cacti 1.2.2 on a RHEL 7 machine. During the pre-install ...
1
vote
0answers
36 views

Set an Environment Variable in Apache and System

I'd like to set an environment variable in both system and httpd. I set the variable, let's say IMPORTANT_FOLDER = /MY/PATH, in /etc/profile and it works for all system users. What i want to do ...
0
votes
0answers
7 views

How to Install Rhel7 Maschine from Rhel7 LiveImage

I have created a Rhel7.6 LiveCD using livemedia-creator. I can boot the Image, but I can't figure out, how I can install the booted machine from the iso image. I want the installed machine like the ...
0
votes
0answers
7 views

CentOS 7.6 Computer Freezes When Changing Display Settings

I am using three monitors and am having an issue where the primary monitor is off to the far left. When I go into the Gnome settings and try and move the monitors around, it freezes. If I unhook and ...
0
votes
1answer
33 views

Why is the default umask for root 022 in RHEL 7

I noticed that root on our machines by default creates world-readable files, which I find unacceptable on servers with many users. My question is a simple one, but I can't seem to understand the logic ...
0
votes
0answers
37 views

reposync - is there risk of file corruption at a certain speed?

I have been looking into using reposync to remotely upgrade some machines by updating various RHEL yum repositories. While this functionality seems to work great in my local environment, I am ...
0
votes
0answers
34 views

CVE-2018-11759 Vulnerable: Tomcat Connector mod_jk 1.2.4

because Tomcat Connector mod_jk 1.2.4 is Vulnerable (CVE-2018-11759) i am forced to upgrade the Connector. The Vendor has advised to upgrade to version 1.2.46 or later (http://tomcat.apache.org/...
0
votes
0answers
30 views

Are any actions needed to activate the yum cache?

On my rhel 7.4 OS, I recently changed keepcache to 1 in /etc/yum.conf: $ cat /etc/yum.conf [main] cachedir=/var/cache/yum/$basearch/$releasever keepcache=1 debuglevel=2 logfile=/var/log/yum.log ...
0
votes
0answers
15 views

lsyncd is not starting

I have installed lsyncd in the Amazon linux server. Below are the server detail NAME="Amazon Linux" VERSION="2" ID="amzn" ID_LIKE="centos rhel fedora" VERSION_ID="2" PRETTY_NAME="Amazon Linux 2" ...
0
votes
0answers
51 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
2answers
30 views

Inconsistency between “/etc/passwd” and “/etc/group”

I have 2 users, each has a different primary group. For user1, the primary group is group1 with GID 501. For user2, the primary group is group2 with GID 502. I edited /etc/passwd manually so that ...
0
votes
0answers
11 views

Password sync doesn't happen between NIS server(IDMU) and NIS client when the user changes his password for second time

We have installed IDMU component on domain controller Windows server 2012R2. and configured the nis client on RHEL5.5 machine. After adding the Unix attributes for a user a default encryption was set ...
0
votes
2answers
31 views

How to prevent high CPU usage from shutting down system?

I work on a Linux system running Java JVM's that create new threads (processes) to handle the work load. Thread complexity can't be predicted beforehand and some threads end up doing more CPU ...
0
votes
0answers
11 views

Ubuntu, no-sudo, (no apt-get, no yum but runs like RedHat): install issue with mysql-server

Goal: Install the following ruby (version >= 1.8.7) rubygems (version >= 1.3.7) libopenssl-ruby mongrel (version >= 1.1.5) mysql-server (version >= 5.1.54) Steps given: sudo apt-get install ruby ...
0
votes
1answer
15 views

Video streaming using coap protocol

I am planning to use CoAP (constraint application protocol) for video streaming between two remote desktops which contains redhat Linux. I have installed respective package for CoAP from open source ...
0
votes
0answers
32 views

Issues adding repository to kickstart

I have a VM server which is supposed to install CentOS with kickstart over the network onto a new VM. I'm able to get it to install fine when I don't have any repositories added, however I'm trying to ...
0
votes
0answers
22 views

Unable to get internet access in my Linux server

I am unable to get internet access in my Linux server …my running operating system is “ Red Hat Enterprise Linux 7”. I get this error: Process: 6044 ExecStart=/etc/rc.d/init.d/network start (code=...
0
votes
0answers
21 views

RHEL mlib64sbin process at constant 25%

I have a process that is running on my server that is running a constant 25% CPU. Top output: PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 40066 root 20 0 ...
0
votes
1answer
58 views

php-fpm and mkdir() permission denied - but libphp7-zts.so works fine

I have Concrete5 site which I need to move to php-fpm from libphp7-zts. I've configured PHP-FPM as normal with Unix socket and PHP (for example "PHP info") is being served fine. I've made sure that ...
-1
votes
1answer
19 views

Wordpress Installation Wizard Does Not Appear

I'm trying to run the WordPress Installation wizard on my dedicated server. When I access the folder where WordPress is present, I get the FTP view. Any Idea why is that? Phpmyadmin is working fine ...
0
votes
0answers
15 views

Change server structure to be able to view files/folders in browser

I'm trying to deploy Wordpress on a red hat Linux server (dedicated server). I'm trying to access it using the normal URL structure [IP]/[rootfoldername]/[nameofthefile] but it's not working. Note ...
1
vote
0answers
31 views

RHEL 7.5 text based install on H/W - Installation Destination “No disks selected”

We are using RHEL 7.5 customized for our use and install We have our own kickstart which uses list-harddrives and parted to check on the Disks and partition accordingly. Disks are in RAID 10 ...
0
votes
0answers
37 views

Red Hat v7.5 freezes on reboot

I have a fresh Linux Redhat Enterprise v7.5 standard (default) installation that freezes every time I reboot my computer (either using sudo shutdown -r of the graphic interface). The screen goes black ...
0
votes
0answers
12 views

Can't access to configuration files at session start on Gnome

I have troubles accessing to my gnome session. I work on a Linux machine with red hat & gnome, and when I want to open my session, I get the error: An error occurred while loading or saving ...
1
vote
1answer
79 views

Using Plink.exe to remotely logon to remote RedHat Linux server to run local Perl script

Long time member, first time poster. I have researched this issue thoroughly but I have not found a solution to this particular issue. I work in a NOC and I am responsible for monitoring servers. ...
0
votes
0answers
18 views

How to update make version to 3.82 to Oracle Linux Server release 6.6

I am trying to update my make version on how to update make version to 3.82 to Oracle Linux Server release 6.6?I really couldn't find anything concrete on the web, any pointers?
1
vote
1answer
46 views

ansible playbook when condition for replay

is there any option for the replay the play in the playbook? I want to write ansible playbook like below. I want to run play2 if any error in the play1_result and after running play1 if play2 is a ...
0
votes
2answers
41 views

Cannot install hexbin library R on AWS instance

I am working on a project that uses the package plotly in R. When I tried installing plotly, hexbin (a dependency) would not compile, because it could not find the gfortran .so libraries. I have ...
1
vote
1answer
695 views

How to install postgresql-contrib-11 on CentOS 7?

So, I was trying to install extension citext on PostrgeSQL 11.1, but of course I've encountered an error: ERROR: could not open extension control file "/usr/pgsql-11/share/extension/citext.control": ...
0
votes
1answer
41 views

iostat + how to solve latency on disks

we use iostat -x and check for the await column - per device it shows the total time spent waiting plus the actual handling of the request by the disk iostat -yzx 5 Device: rrqm/s wrqm/s ...
0
votes
0answers
12 views

RUNPATH seemingly ignored by Python 3 on RHEL 7.4

I built TensorFlow 1.12 from source using Bazel 15.0, Python 3.6.5, and GCC 7.3.0. It seems to work properly, but that when I import pandas before importing tensorflow it uses /lib64/libstdc++.so.6, ...
0
votes
0answers
37 views

Network teaming configuration

How to configure the teaming network? On our redhat machines we configured as the following the teaming network On each machine we have two links - ens1f5 and ens1f6 And we add the team0 file to ...
0
votes
0answers
17 views

How to extend the root file system on Red Hat Enterprise Linux 7.4?

I have a hard disk /dev/sda which space is 20 GB and it has 2 regular partitions (not lvm): / and /boot. The / is 19.5 GB and /boot is .5 GB. I need to extend the / file system to be 50 GB and I have ...
0
votes
0answers
22 views

InfiniBand config and route in redhat

I have a system (HPC) have 1 headnode (192.168.2.2) 10 node and (192.168.245-254) 1 NFS server (192.168.2.244). I have a issue My headnode can't ping to NFS server but from NFS server I can ping to ...