Red Hat Enterprise Linux (RHEL) is a commercially supported Linux distribution.

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localize banner message on login screen in gdm 3.8 and above

I am using dconf db to set the banner message as follows: Create a gdm keyfile for machine-wide settings in /etc/dconf/db/gdm.d/01-banner-message: [org/gnome/login-screen] banner-message-enable=true ...
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30 views

Centos 7 persistent static routes for any interface

I am trying to set up some static routes in a CentOS 7 box. The official RHEL says it is possible to add files in /etc/sysconfig/network-scripts/route-interface. This approach works, however I need ...
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28 views

How do I mount a USB external hard drive in RHEL rescue mode

I had a boot failure on a RHEL 6.2 machine and I can now only start it in rescue mode with the recovery CD. I would like to move all the data to an external USB-mounted drive but I am having problems. ...
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13 views

rhel 6.x rebuild - reuse the same license files

I was wondering if it is possible to reuse the same files for reregistering a server after reinstallation. The hostname will be exactly the same: Is there any way to do that by using ...
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26 views

IP aliasing in Linux

The correct way to assign multiple ip addresses to one LAN card/NIC is ip aliasing such as eth-0:0 and eth-0:1. You would go and create separate network-scripts for each alias and assign a different ...
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77 views

Redhat error while loading shared libraries: libkeyutils.so.1: cannot open shared object file: Permission denied

I just installed and am trying to start rpcbind on my redhat 7 machine. I'm new to linux so I'm having some trouble figuring out what to do next. I'm running all of these commands as the root user. ...
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5 views

List connected clients to an iscsi target

Is there any way to list the connected clients to an ISCSI target from another client. While sitting on the target itself , it may be easier to see which clients have mounted a particular target , ...
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16 views

Remove the hostname in the title bar when running a GUI over X

From a RHEL machine, I'm connecting to another using the following: ssh -X user@remotemachine I then run a GUI application. In the title bar of each window, the hostname is displayed. eg. ...
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7 views

Is there a way to bypass a specific service from initializing while it's “hanging” during boot?

RHEL 5.x I had a network issue that was preventing ntpd from being able to reach a remote time server pool. This ended up prolonging system startup to "hang" at: Starting sshd: ...
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17 views

Red Hat / Toughbook ATI Driver Issue

We received some new Panasonic Toughbook CF-54 laptops here at my office that have ATI dedicated graphics as well as an integrated Intel chip and I can't get the proprietary ATI drivers to work for ...
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9 views

Devices for Analog I/O gone from /dev after reboot

I have a system using Centos 6.6 and another system using RHEL 6.6 on the same architecture that both need analog I/O drivers to communicate with sensors that will be attached to the device. Thus, I ...
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9 views

Connecting a Redhat virtual machine to the host NIC that uses network bonds

I'm running Redhat 6.6 on severs with multiple interfaces. And I am successfully using network bonds on the interfaces to connect with the different VLANs on the existing network. The servers are ...
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58 views

How do I add a Redis Cluster to a Pacemaker CentOS 7 Cluster?

I need to set up a CentOS 7 web server cluster that is able to manage user sessions while also load balancing across the nodes in the cluster. Towards this end, I have transcribed instructions from ...
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20 views

Where are macvtap settings on rhel 7

I am creating a virtual machine in KVM on Red Hat Enterprise Linux 7. I have created two bridges and connected two interfaces which are on the physical hardware to the bridges. How can I use these ...
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58 views

Openssl installation in RHEL 6.2

I had openssl 1.0.0-fips in my RHEL 6.2 box. I tried to upgrade it with openssl-1.0.2e. It got installed successfully. However when I try openssl version I still get the old version. Further I see ...
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31 views

Restart service after boot then enable networking ordering

Problem: Server application when first started upon boot has memory leak. When service is restarted, it will then run without issue. Temporary solution is to: AFTER the OS has completed booting, ...
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18 views

install redhat 6 without formating multipath disks

I've server RHEL 5 with multipath storage attached to it the OS is installed on local disks now I need to remove rhel 5 and install rhel 6 I perform fresh installation when i do this it shows me all ...
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12 views

Is it possible to have an IPA user/group in both security limits and nproc limits

I am planning to deploy cassandra to a set of Red Hat 6.7 machines but there was an additional requirement to use IPA user for the cassandra user. For the cassandra user we usually do some ...
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8 views

Cassandra nodes down in DataStax

I'm new in DataStax dashboard Configuration but i have critical requirement. I configured dataStax dashboard and i added all nodes. After that when i am clicking on my Cassandra cluster it's ...
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16 views

Installing a file as part of making an ISO installer

I am sure that this is answered somewhere else on this board, but I have searched high and low and have been unable to find an answer. I am building a custom ISO installer and everything is going ...
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17 views

realmd vs authconfig

What is the difference in functionality between realmd and authconfig? (using fedora 22) What is the correct way to connect to an active directory realm with using Kerberos and using SSSD server?
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28 views

Apache 404 error: Rewrite rules for Apache

Getting the following 404 not found as shown below in access.log file of httpd while trying to access the following URL:www.example.com/support . This was created using the network multisite feature ...
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15 views

Desktop top panel displays the icon of active program with wrong label

This probably is a new feature of RHEL7. It put an icon and a label of active program on the top panel. But when running our company's application, the label is not the right name of the program. Is ...
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59 views

'yum' command fails with 'TypeError: rpmdb open failed' in Red Hat 5.2

I'm unable to run yum command on my Linux machine. I'm getting the following errors: dispsim:~$ yum Failed to set locale, defaulting to C Loading "rhnplugin" plugin Loading "security" plugin error: ...
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26 views

Install RHEL 6 to a remote drive (NFS root)

I need to be able to install RHEL 6 to a network drive. In more modern operating systems such as RHEL 7 this is an option. Unfortunately for me I have to use RHEL 6 (actually Scientific Linux 6.6 ...
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336 views

Unable to start vncserver in RHEL 7

Following the instructions from Redhat documentation (TigerVNC), I've installed VNCserver in RHEL 7. When I try to start the vncserver service, it returns an error #systemctl start ...
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60 views

Kickstart: --percent option along with --maxsize in RHEL 7.1

I have a kickstart to automatically create LVs based on a percentage instead of a fixed size. Currently, my kickstart is working as expected, but in installations with large HDs the LVs sizes are ...
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51 views

screen resolution woes on RH 7 running Xorg, which has no Xconfigurator (which seems only for XFree86)

I have a dell precision m6800 laptop that is experiencing stubborn low screen resolution problems with red hat 7. The funny thing is I installed RH 7 with no BIOS raid configured and I got the ...
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24 views

Installing swftools with dependencies on a server with no internet connection?

I am trying to install a package on a Red Hat server which does not have internet connection by which I could directly download and install dependencies. Where can I download the swftools package ...
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23 views

how do I virt-install a guest from a dvd?

On a CentOS 7 host server, I would like to create a guest virtual machine with CentOS 7 as the guest operating system. I have a CentOS 7 installation DVD that was burned from an iso file in windows, ...
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23 views

Need help getting bug fix for RHEL6

How can I get the new kernel as mentioned here? I have a RHEL6 server that's using subscription manager and also registered with RHN. I have ran the usual yum updates and still am not getting the ...
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79 views

Squid/SquidGuard- Browser or user-agent or device based access

I have been trying to configure squid and squidGuard such that iPads and iPhones would get full internet access, while others getting access as per user based policy. The IP addresses allocated to ...
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20 views

pkgsrc on RedHat: bmake stops during texinfo install

I am trying to install git from source via pkgsrc on a RedHat system. It's a sort of test to see if pkgsrc can be used for unprivileged package management. But, when I run bmake, the installation ...
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40 views

Are there behavior changes for sudo-1.8.6p3-15.x86_64 (RHEL6.6) as compared to sudo-1.6.9p17-6?

We found that there is a behavioural changes in sudo-1.8.6p3-15.x86_64 (RHEL6.6) as compared to sudo-1.6.9p17-6 (RHEL 5.8). It has been observed if a script called through sudo, and if CtrlC (SIGINT) ...
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136 views

Transaction Check Error: file /etc/pki/rpm-gpg/RPM-GPG-KEY from install of oraclelinux-release-6:6Server-3.0.2.x86_64 conflicts

I am trying downgrade oracle linux 6.7 to 6.6 [root@xxxx ~]# yum downgrade redhat-release I am getting an error that "Transaction Check Error: file /etc/pki/rpm-gpg/RPM-GPG-KEY from install of ...
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67 views

turbostat - how to tune to make CPU%c1 = 100

I'm using my server for low-latency trading. I'm using Low Latency Performance Tuning for Red Hat Enterprise Linux 7. It suggests to run turbostat sleep 5 command to verify that Bzy_MHz = TSC_MHz, ...
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37 views

debugging: new ssh connection could not be established but ping was ok on RHEL 6.3 (high cpu usage)

One of my RHEL 6.3 build on vm raised an alert "virtual mechine cpu usage". I tried to connect to the vm using putty but the connection could not be established. There was no packet loss from ping. At ...
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28 views

Facing issue while integrating RHEL 6.5 with windows AD

I was integrating my RHEL linux servers with AD. For some servers the integration was completed successfully. For one server I am facing issue,whenever I try to join its showing below error, ...
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54 views

Deleting of whole symbolic link folder when rpm -e is ran

I am currently building an rpm for RHEL 6.6. The installation of the rpm goes great the the command rpm -Uvh foo.rpm. However I run into a problem when I do the rpm -e foo command. The problem is ...
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26 views

RHEL7 : Freeing memory allocated for Block IO i.e. bio -> bio_destructor

I want to know HOW memory allocated for BIO gets free specific to RHEL 7. I think, in RHEL 7 , bio->destructor field is removed from the bio structure. So, how exactly the memory will be freed? ...
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25 views

Install orca on redhat

Has anyone successfully installed/ran orca (a performance monitoring tool for Solaris) on Redhat? I see some old posts asking about it but there have been no responses. ...
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82 views

Disable VGA port via GRUB in Linux

I want to disable VGA port of my hardware by making changes in the GRUB. How can I do this? I am using Red Hat.
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1k views

Tomcat 7 not producing log output to catalina.out on RHEL7

I have a RHEL7 server with Apache Tomcat 7.0 installed and after a recent update to RHEL7.1 all of the logging to ${catalina.base}/logs/catalina.out was stopped. However i am receiving the logs inside ...
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45 views

What are the steps to migrate from GRUB to GRUB2?

I have a fresh installation of Scientific Linux6/RHEL6/CentOS6: I have /boot with boot loader and / with all else (which are sda1 and sda2 partitions of one hard drive, on a fresh, real system). I ...
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125 views

Upgrade python from 2.4 to 2.6 on RHEL 5.7

Currently We have 2.4.3-56.el5 version of python installed on RHEL 5.7. Need to install nodejs for which the python version should be upgraded to python26. I have downloaded the below rpms: ...
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46 views

check status of network printer in linux

I need to enable/disable print button in my application based on status of available printers. For USB drivers, I am checking sysfs ( /sys/class/usbmisc/lp0/dev ). But for Network drivers I didn't ...
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40 views

Internet connection proflem on CentOS and Redhat linux

I am new on CentOS and installed dual boot with windows 7. I am using a local isp internet on my windows7 system but can't access through centos. On centOS system, using the same IP, DNS, and Server ...
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48 views

LDAP replication issues (duplication)

I initially thought this question might be more appropriate for SO, however as I believe it's more of a configuration problem I have posted it here. I'm running LDAP 2.4 on RHEL 6.4. I have 2 LDAP ...
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57 views

How can I confirm download status for yum update on RHEL5/CentOS5?

I have an older server/appliance running CentOS 5.x. When I run updates on it, yum shows something like this: The screen stays like that until all packages are downloaded -- no status or progress ...
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65 views

RHEL: add IPv6 default gateway via interface configuration file

I need to configure a default gateway for IPv6 over the interface configuration files in RHEL (6.6). The File is managed by puppet With IPv4 there is this option GATEWAY=[IPv4 address] I've ...