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

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unable to detect newly added lun in rhel4

Unable to detect newly added lun in RHEL4 running with 2.6.9-103.ELsmp..Tried LIP protocol but that didn't helped echo "1" > /sys/class/fc_host/hostx/issue_lip Any help is appreaciated
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18 views

Problem in installing new software - RHEL6

I am currently having difficulty in installing new software/plugins on my rhel6 work pc. I don't have any internet connection on it and have to download anything I require on a separate internet PC ...
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3 views

Command Samba Mount with Multiple Users

Samba share from server is mounted on my RHEL 7 system via root user. RHEL 7 system have a few non-root users(e.g user1,user2 and so on). Users (user1 and user2) can create, modify and delete the ...
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1answer
8 views

Red Hat 7 GDM + NIS Only Validates First 7 Characters of Password

I've come across an interesting issue this morning. We have noticed that GDM on RHEL 7 is allowing us to log-in with only the first 7 characters of password. We can enter anything or nothing from ...
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20 views

How can I gracefully power down an old PCI system

I have an old PCI server with that has three RHEL 6.5 segments, and I have yet to find a way to power the system down properly. I tried both halt and poweroff and they bring the entire system down. I ...
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12 views

Recreating local selinux contexts after OS Reinstallation

We have added a few specific contexts to our SELinux via the "semanage fcontext ..." command. The patterns are stored in /etc/selinux/targetd/contexts/files/file_contexts.local. Assuming that we ...
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1answer
18 views

Recover full command that generated core dump

A program I am working on is crashing and generating core dumps. I think that the issue is related to the arguments that it's being called with, some of which are automatically generated by another ...
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0answers
16 views

Permanently Configure two X Servers

I'm trying to permanently configure a second X server to start at runtime on RHEL 7. I am aware that I can start a second x server using startx -- :1 vt 2, but I'd much rather integrate it to the ...
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29 views

Service in RHEL server stops working after a while

I have a RHEL 6 server running with several services (I mean, I have made the server scripts and the programs they run). I have a problem with two of them. I will try to explain the problem and then ...
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12 views

Cannot start Acronis MMS server

I have a problem with my Acronis on my linux When a try to start ./acronis_mms start Starting Acronis MMS: [ OK ] but when I want verify if this service ...
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37 views

Is there a way to use epel and local yum together

I am using RHEL7. If I do a fresh install of RHEL7(with connected internet) and then installing epel rpm. All the packages are getting installed after that. But then few packages have dependencies ...
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32 views

How does Grub Stage1, exactly, access/load stage 2? [duplicate]

This is my first ever question, I have put this question in front of Red Hat Instructors but didn't find any satisfying answers. I'm using RHEL/CENTOS6, GRUB Legacy 0.97, and have consulted heaps of ...
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8 views

Rsyslog not creating dynamic directories

I have Red Hat Enterprise Linux Server release 6.5 running rsyslogd 5.8.10 I'm trying to collect logs from a remote client (VM1) and I have the following line configured if $inputname == 'imudp' ...
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1answer
39 views

Why can't my servers talk to each other over direct ethernet connection?

I have two servers running RHEL 7.2. Each have 2 NICs. One NIC talks to a switch, and other is a direct connection between the two servers. One of the servers will be an NFS server, and the second ...
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32 views

Kdump.service FAILED centOS 7

I am getting this error on my centos 7 x86_64 after "yum update". After rebooting the host it went into emergency mode. after entering this: systemctl status kdump.service I get this: ...
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18 views

rsync : fixing Permission denied error with no rwx permission

We can see that one of our rsync jobs is failing with the following error rsync: opendir "/share/resources/0731402367/docs/quick-check/answers" failed: Permission denied (13) rsync: opendir ...
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24 views

stop while booting giving error of Genetrating “/run/initramfs/rdsosreport.txt”

I am getting following error while booting my centos 7 machine Generating "/run/initramfs/rdsosreport.txt" Entering emergency mode. Exit the shell to continue. Type "journalctl" to view system logs. ...
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2answers
200 views

Why are .so packages provided by the devel packages?

I've seen an interesting pattern in RPM packaging. The main library package will include the shared library itself: /usr/lib64/libavcodec.so.54 The -devel package will provide headers and a ...
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1answer
33 views

rsync failing to exclude directory [duplicate]

We are using rsync to copy files from one location to another location on a different host. We want to exclude a directory from the source location so that files from this directory are not copied . ...
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2answers
56 views

My ssh key doesn't work, permissions look good [duplicate]

My permissions look like this: -rw-------. 1 smpadmin staff 400 May 21 2014 id_rsa.pub -rw-r--r--. 1 smpadmin staff 505 Dec 14 19:19 known_hosts drwxr-xr-x. 45 smpadmin staff 4096 Jan ...
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1answer
22 views

Does “defaults” option include “acl” option in /etc/fstab?

I'm working with ACLs on CentOS 7 and noticed that the partition (/) where ACLs are applied is mounted with defaults options. As far as I know ACLs need that the acl option is enabled in the mount, ...
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1answer
37 views

Mount CIFS shares as non-root on RHEL7 w/o desktop

We have a Windows (AD) domain which a RHEL/CentOS 7 server has joined (SSSD / realmd). The users log into the server via SSH with their AD credentials. Now the users should be able to mount some of ...
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25 views

sar/sysstat output logs to a 2nd directory

We're running RHEL on one server and I need to report some stats about the machine. sysstat/sar does a great job but I need the logs to report starting with 6am until next morning at 6am and output ...
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14 views

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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32 views

gdm Pop-Up Window on Login

So I was using a bit of bash script to get a popup window to appear on login for our RHEL 7 machines. I put the following code in "/etc/gdm/PreSession/Default". /usr/bin/zenity --warning ...
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27 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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1answer
17 views

yum Invalid or prohibited port

I have an http repo on non-standard port 4080. When trying to retrieve packages list it fails: # yum install aaa Loaded plugins: security, versionlock ...
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9 views

Unable to jump using GDB [migrated]

I'm generally successful using GDB to debug some code - although this is the first project I've ever actually use it in anger - but one particular executable is causing me problems. It's spawned as a ...
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1answer
32 views

Automated RPM builds

I'm making my own personal RPM repository. So far, I've built the following packages: x264 libx264 libx264-devel x265 libx265 libx265-devel lame libmp3lame libmp3lame-devel libmfx ...
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1answer
8 views

Redhat: Swap Memory Used is Much Higher Than Total

The top command showed the following information: Mem: 132110132k total, 10447536k used, 121662596k free, 76120k buffers Swap: 16777212k total, 18446744063504593392k used, 10221735436k free, ...
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26 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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25 views

Are there some ways to install a smaller new linux on a older one?

The company's redhat linux is too old to install something, but it cannot be replaced with new one. I want to install some software but there are a lot of dependencies that version is too low. I want ...
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1answer
23 views

Long running script stops sending output to file

I have a script that I'm using to capture some status of the server at 10 second intervals. The script is as follows: for (( ; ; )) do /usr/local/apache/bin/apachectl fullstatus sleep 10 ...
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1answer
15 views

yum update error in RHEL 5.11

http://10.91.209.2:81/builds/rhel/RHEL6.4-Server-x86_64/Server/repodata/af55926cd66a289d9c7eaf352b2ed91ca0e28f91a505fff2b5c4c7cc2f1885e0-primary.sqlite.bz2: [Errno -3] Error performing checksum Trying ...
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1answer
39 views

%pre section of my.rpm is no longer executed on RHEL 6.7

There is a .spec file to build an rpm package for our software. In the %pre section of the .spec file there is a check if a previous major version of our software is installed. If yes, the ...
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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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1answer
44 views

Printing text to pdf using cups-pdf doesn't work

I installed cups-pdf 3.0 beta 2 on a Redhat 7 OS. I compiled the code manually (as per the instructions on their site) after I installed cups-devel-1.6.3-17.el7_1.1. I am running ...
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1answer
28 views

Using Device mapper thin provisioning on loop devices

I have several KVM raw files that are read only (about 100gb). I am adding these raw files as loopback devices. I then create a snap file to allow the VM to have read/write access to its disk. This ...
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2answers
38 views

after power outage no permissions to access samba share from windows machines on the same domain

I am running a ClearCase server on RHEL 6.7. We had a power outage last night (for the life of me I do not know why we don't have damn UPS). At any rate, when the machine was brought back up, we are ...
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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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70 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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1answer
35 views

Java problem - RHEL

I have RHEL in a test environment and I wanted to install a program that initiates a script that mandates java. The script tests for Java binaries folder. I tried first to choose the java/bin ...
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3answers
43 views

What is the opposite of yum provides?

yum provides <command> tells you what package provides, for instance, /usr/bin/python. But how do I find out what commands are provided by a certain package?
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Steps to make a new repository work?

On RHEL7 once I had to create a new repository config file /etc/yum.repos.d/foo.repo to fetch packages from a remote server: [foo] name=Foo Repo baseurl=http://10.2.3.4/path/ enabled=1 gpgcheck=0 ...
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2answers
88 views

Centos 7 - ssh-keygen is not generating keys

sshd service doesn't start due to missing keys. When I try to generate the keys using ssh-keygen -t dsa I just get message saying: Generating public/private dsa key pair. I don't get prompt to ...
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RHEL 7 Still CPU Frequency Scaling

When machine is imaged with: RHEL6.x CPU speeds report full 3.3Ghz speed for all CPUs cpupowerutils is not installed RHEL7.x CPU speeds vary (shown in example below) cpupowerutils is installed ...
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2answers
76 views

dnf - how to show which mirror url has been chosen?

Below is the part of bash log, the full log can be achieved at https://gist.github.com/limkokhole/f2a423112aa005f10862: [xiaobai@xiaobai hello]$ dnf --verbose download --source readline cachedir: ...
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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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27 views

Identifying disk drives during RHEL/CentOS/Fedora Installation

What steps are followed in order to identify a connected disk drive during Linux installation ? I am interested RHEL/CentOS/Fedora procedures. Is it entirely depends on the Kernel package and drivers ...
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1answer
56 views

How do I get a service on a remote CentOS 7 server to persist after I log out?

I am experimenting with running Spring Boot apps on a remote CentOS 7 web server which has been successfully serving up apps on Apache and a stand-alone tomcat instance since day one. However, when I ...