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

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Flush Postfix mail queue

I'm running an old version of Postix (1.1.7) on my Red Hat Linux and I wanted to flush the e-mails from a specific recipient with postsuper, which comes with the postfix-perl-scripts package. However, ...
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tcpdump - capture trace in both directions on RHEL6

I am using redhat bonding and have identified my active interface as eth5. I am using Redhat 6.5 Server Here is my command: tcpdump -i eth5 src host actual_ip_address_of_external_client after ...
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1answer
48 views

Yum Corrupted on RHEL 6

I really need help. I am encountering the issue with my yum command. It seems to be exactly the same as the issue described on this site, Yum corrupted on CentOS 6.2, Problem importing one the python ...
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616 views

How to uninstall vmware-tools-foundation

So I am having lots of problems with this: Warning: RPMDB altered outside of yum. ** Found 21 pre-existing rpmdb problem(s), 'yum check' output follows: ...
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Why doesn't yum-builddep install all dependencies?

What worked for other packages, doesn't work for kernel. Why? First, sync: [git@dioptase SRPMS]$ ssh root@localhost yum-builddep /home/git/rpmbuild/SRPMS/kernel-2.6.32-431.el6.src.rpm Getting ...
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1answer
35 views

Linux for real time production server [on hold]

I would like to know a linux OS for a real time 24x7 running production server. I have heard that RHEL is pretty stable & suitable for this type of usage. Now I would like to know how it is ...
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3k views

Some Ossec agents not able to communicate with OSSEC server

I have installed Ossec on one server and agents on some other servers running on Redhat. The issue is that some servers are able to communicate and send the logs to servers and others are in INACTIVE ...
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2answers
36 views

How to set Timeout for an ssh command and also get back the result of remote commands

I have a script that runs on bash, in an RHEL server that connects to thousands of nodes and returns with the values of some 5 executed commands - It collects info from RHEL Servers only. It works ...
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How can I maximise Netbeans window from the terminal?

I am on CentOS 6 and using VNCViewer to remote in to a box which has four monitors. The problem is VNCViewer won't allow me to click on the Netbeans Window "Maximise" square, top-right, so I can ...
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2answers
331 views

RHEL 7 (CentOS 7) security / ssh / sshd_config advise requested

I am not a sysadmin and try to create a more or less secure web server (LAMP based CentOS 7). I read several tutorials about setup an initial CentOS 7 droplet and got everything running fine. ...
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How to open multiple terminals in Redhat Linux 6.0, in shell? [on hold]

I am using Redhat Linux 6.0 on Vmware Workstation. When I am trying to open multiple terminals on exiting terminal (command based-init 3), I'm unable to open. Can anyone help me in getting this ...
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yum-builddep building the dependencies from source

My current way of building packages from srpm: cd ~/rpmbuild/SRPMS yumdownloader --source $p sudo yum-builddep *.src.rpm if some build deps not found, repeat the above steps for each of them ...
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Is there any sound enhancer/equalizer for Linuxes that are not Ubuntu?

I am looking for a systemwide audio equalizer for Debian, Gentoo or Red Hat Enterprise Linux, i.e. an audio equalizer that filters the entire signal that is sent to the audio chipset, something ...
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1answer
2k views

RHEL 6.4: Openssl 1.0.0-27 libcrypto and libssl missing

I am trying to install znc IRC bouncer, which needs openssl libraries: Error: Package: znc-1.4-1.el6.x86_64 (epel) Requires: libcrypto.so.10(libcrypto.so.10)(64bit) Error: Package: ...
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18 views

Connect to Windows share from Red Hat machine via DNS name

We have a Windows share \\server1\share From a Red Hat machine, we can mount to the share without issue. We have setup a DNS pointer that points to server1 and is named production. From the Linux ...
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2answers
73 views

Installing latest wireshark impossible?

It looks like installing a later version of wireshark is near impossible on redhat 6. I've searched the web extensively and can't find any questions where someone has said their issue was resolved. ...
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45 views

How could we allow non-root users to control a system.d service?

With sysvinit, a sudoers entry like this would suffice: %webteam cms051=/sbin/service httpd * This would allow for commands such as: sudo service httpd status sudo service httpd restart Now, ...
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11k views

How to add an item to the Applications menu?

How can I add an application to Applications > Internet in Gnome Desktop running on CentOS 6.4? Per this old Docs link, it suggests to edit /etc/xdg/menus/applications.menu. How can I add ...
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29 views

Is anyone using Red Hat Enterprise Linux for Desktops or Workstations at home? [closed]

I consider using RHEL for my dissertation, on my Thinkpad T430. I've been using Linux (mostly Ubuntu, Debian) for the last decade but I'm curious about RHEL since it seems to be used a lot outside ...
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34 views

What's the difference between RHEL 6.5 and RHEL 6.6? [closed]

I've a copyright software installed on my server and the support told they don't support RHEL 6.6 against RHEL 6.5 only. They ask me to downgrade the release. I explained I'm very surprised like it's ...
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2answers
1k views

How To Locate Dependencies Needed by RPM Packages

I am trying to deal with keeping our RHEL 5 server patched up, but also dealing with our security constraints. This particular server is not allowed to talk to the Internet. So yum isn't really an ...
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1answer
1k views

How do I resolve the url timeout error when running a yum command?

I'm trying to upgrade SVN 1.6 to 1.8. When I run the commands: yum install mod_dav_svn subversion I get the following error (after a short pause): ...
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546 views

Installation of QEMU, GCC for ARM in RHEL

We are setting up a lab which has the QEMU system to emulate an ARM processor and run assembly programs. The lab is currently setup with the host operating system as Ubuntu. We are migrating the lab ...
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17 views

Failed login notification at login

I have seen it before when you log into a Linux box wrong, when you do successfully log on, it notifies you that someone attempted to log on as you and didn't succeed. How is this accomplished? I ...
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1answer
5k views

NFS Mounting Error

From ServerA I shared directory /u001/app/oracle/FolderA and trying to mount this on SeverB under /media Contents of ServerA /etc/exports file /u001/app/oracle/FolderA ServerB(rw,sync) When I ...
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20 views

asking administrative permissions for remote console session while logging

Errot:to log on to this remote console session you must have administrative permissions on this computer. this error in specific Redhat system. from other systems its working.
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How to reset the Password for Web UI of Bacula

My colleague is on vacation and I need to configure bacula but I don't know the password for user. So I need to reset the password for user. What is the way to reset the password?
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607 views

How can I make the eth1 up and always available for remote access, where eth0 will be used for host to host IPSec VPN?

I am running Amazon EC2 instance with Red hat enterprise linux, where I have two network interface. Now: eth0 is currently active having public ip where I am remotely logged in via SSH, to ...
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Any concerns with using high UID numbers (3000+) on RHEL5+?

The legacy systems has UID numbers up until the low 2000s. In implementing a new user management system, I am looking into options to avoid UID collisions. One option is to just have a list of UIDs ...
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6 views

XFS increase size

How to increase data size at the expense of the other disk. xfs_growfs without param [from,to] increase. /dev/sda8 45695376 36341884 9353492 80% /data Disk /dev/sda: 128 GB Disk /dev/sdb: ...
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why redhat repository still offers 2-years old boost?

I"ve installed RHEL 7.1 which was just released (several weeks ago). I wonder that it still offers boost 1.53 which was released more than 2 years ago http://www.boost.org/users/history/ yum list | ...
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23 views

Conflicting answers regarding package from rpm, yum and repoquery

I have a few packages on a RHEL 6.5 system which exhibit the following puzzling behavior: The package is installed; rpm -q reports the package as installed; yum search shows that the package is ...
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54 views

How to enable systemd user sessions for remote logins on CentOS 7?

I am trying to enable systemd user sessions on my CentOS 7 server. All the pieces seem to be there, and I have also run loginctl enable-linger <user>, but I don't have a systemd user session (or ...
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1answer
31 views

Analyzing logs offsite, with a different computer

I have a computer deployed with no internet access. I have small windows in which to copy the log directory to a USB stick and analyze offsite. If I pull the logs off of a CentOS / RHEL system ...
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13k views

With SSH X11 forwarding (`ssh -X`), get `Can't open display` trying to run X applications

I'm able to login to sever using ssh -X Hostip but when i run the command xclock it give me this error Error: Can't open display: localhost:11.0 I check my Display value using echo $DISPLAY ...
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32-bit package from a repo that should only contain the 64 bit packages

Trying to a do install of some packages and it seems that it is trying to pull a 32-bit package from a 64-bit repo. Installing for dependencies: cyrus-sasl-lib i686 ...
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1answer
534 views

how to have root partition LVM for RHEL 5.8 64 bit on AWS EC2

I am new to this and I have to create a RHEL 5.8 Amazon Machine Image (AMI) in which the root partition should be a logical volume. I know how to create a data partition as a logical volume but am not ...
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1answer
23 views

createrepo fails with headerRead failed message

I execute createrepo -v --update epel-dir/ and at package number 14173, the process fails with a Python stack trace complaining that: headerRead failed: Header sanity check: OK So, I thought ...
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458 views

Should reposync download repodata?

I am using reposync on an RHN repo. It downloads the RPMs find but doesn't download repodata. I know I can run createrepo, but I'd like to keep group install info. Is this nornmal behavior? If so, ...
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RHEL 7 - how to make minimal install but with GUI?

I'm using RHEL 7.1. So far I was always installing "Server with GUI". I'm using my server for HFT trading so I think "Minimal install" is much more suitable for me. I don't need a lot - only ssh, ...
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3answers
112 views

How to merge config files interactively after “yum update”

After system packages are updated with "yum update", config files which could not be overwritten are not replaced, but we can find *.rpmnew files near by. By design system administrator must merge ...
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1answer
902 views

The equivalent of start-stop-daemon for RedHat 6

I have an upstart script to create a service in RedHat 6: env PLAY_BINARY=/usr/bin/play env HOME=/opt/warda env USER=root env GROUP=root [...] script exec start-stop-daemon --start --exec ...
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2answers
2k views

Do mpstat and iostat come standard with Linux RHEL 5.8?

Do command line utilities like mpstat and iostat come standard with the RHEL 5.8 machine? Or are they optional utilities which the user has to install manually, if required? I could find these ...
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Connection issues with KVM on RHEL6.5 to Licence Server

I currently have a RedHat 6.5 kvm running under a RedHat 6.5 host. I am attempting to make a connection to a Rational Apex licence server on the local network, however the connection times out before ...
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CentOS - install using yum Apache 2.4

I need Apache 2.4 in CentOS because with Apache 2.2 mod_proxy_wstunnel is not possible. I have tried https://fedorahosted.org/SoftwareCollections/ but unfortunately its for RHEL after installing i ...
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1answer
32 views

What are gpg-pubkey* packages?

I compared the packages list reported by RPM and YUM on a CentOS 6 and 7. I noticed the lists were slightly different (same issue with RHEL). See Listing installed packages with yum and rpm mismatch ...
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How to resolve issue of misconfigured vnc server on centos 7

While configuring vncserver in centos 7,the < USER >field in the vnc file gave me quite a bit of thoughts.whether it was to be replaced with the login name for accessing the ssh or some other ...
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Is it possible to convert RHEL to CentOS?

The software vendor that we used has always specified that we should load RHEL on servers we've bought to run their software however they did start to accept CentOS and even now prefer it on new ...
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3answers
87 views

Building a Read-Only Linux System With a Writable Layer in RAM

I have a requirement to boot RHEL 6.6/7.0 into read-only mode with a writable layer only in RAM. I believe this is similar to how live CDs work, in that the file system is read-only, but certain parts ...
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33 views

Installing python library matplotlib on RedHat for second python installation

I can't seem to find documentation on this. Matplotlib says to run: sudo yum install python-matplotlib which installs all the dependancies and this version of matplotlib successfully: ...