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Questions tagged [redhat]

Red Hat is an open source technology solutions provider with offerings including Red Hat Enterprise Linux, open source applications, security and systems management, virtualization, Services Oriented Architecture (SOA) solutions, server and desktop operating systems, Java application software and services, and the JBoss Enterprise Middleware Suite. Please also consider whether or not the more specific RHEL5 or 6 tags might be appropriate as well.

Red Hat is an open source technology solutions provider with offerings including Red Hat Enterprise Linux, open source applications, security and systems management, virtualization, Services Oriented Architecture (SOA) solutions, server and desktop operating systems, Java application software and services, and the JBoss Enterprise Middleware Suite.

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What are the "actual" differences between CentOS, RHEL, and OEL?

Several applications require a specific release of Linux on which to run, such as RHEL 5 x64, Update 4. Theoretically, CentOS 5.4 x64 should be exactly the same as the RHEL variant - since the CentOS project endeavours to be 100% binary compatible…
warren
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Is there a program like WinDirStat for RedHat?

I'm running out of disk space on one of our Linux servers and I need to find out what is taking up all the space. TIA
ThingsToDo
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SFTP - whitelisting requests for read-only access

I am trying to white-list certain SFTP requests so that a user can only open and read files and folders. Currently I have this, based on this thread: Subsystem sftp internal-sftp Match User my-read-user ChrootDirectory /sftp/%u ForceCommand…
silent
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Best way to make RHSCL PHP available globally

I have installed RHSCL 2 using the following url: https://access.redhat.com/documentation/en-US/Red_Hat_Software_Collections/2/html/2.0_Release_Notes/chap-Installation.html using the RedHat subscription manager. I then ran yum remove php* followed…
Ozzy
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Redhat 7 desktop to workstation

I installed a RedHat out of an installation cd, registered my entitlements, all that stuff. As part of my subscriptions I have both Red Hat Enterprise Linux Workstation and Red Hat Enterprise Linux Desktop. (plus a tons other) My problem is…
Lorenzo Boccaccia
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What is the difference between the Linux and Linux LVM partition type?

Fdisk shows multiple partition types. What is the difference between choosing 83) Linux and 8e) Linux LVM? Choosing 83) Linux also works fine for using LVM, even creating a physical volume on /dev/sdb without a partition table works. Does picking a…
ujjain
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RHEL 6.4: Mode 1 channel bonding not failing over

I'm running RHEL 6.4, kernel-2.6.32-358.el6.i686, on an HP ML 350 G5 with two onboard Broadcom NetXtreme II BCM5708 1000Base-T NICs. My goal is to channel bond the two interfaces into a mode=1 failover pair. My problem is that in spite of all…
Wesley
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Linux - if I change the hostname, which services need to be restarted?

I'm making some system hostname changes across a few environments and this got me thinking... When I change a server's hostname (live), what needs to be modified and which system services require a restart? Assume this is done online without a…
ewwhite
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Determine the default character encoding in a RedHat system

How do I determine the default character encoding in a RedHat system using the command line? I just want to know what encoding a Java app would use per default if none is specified
victor hugo
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second ip address on the same interface but on a different subnet

Is it possible in CentOS 5.7 64bit to have a second IP address on one interface (eg. eth0) - alias interface configuration - in a different subnet? Here is the original config for eth0 more etc/sysconfig/network-scripts/ifcfg-eth0 # Broadcom…
fptstl
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Find MAC addresses in /proc or somewhere despite bonding device?

Is there a way to get the original MAC addresses for eth0 and eth1? A large array of servers have bonding interfaces managing backup switch connections and one is misbehaving. With bond0 active both MAC addresses are replaced and reported…
DigitalRoss
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Does SELinux make Redhat more secure?

Does SELinux make Redhat more secure? I can't remember the number of times when I have disabled SELinux because it kept frustrating my ability to get stuff running. Lots of times to there was no obvious reason why stuff wasn't working and I had to…
vfclists
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Configuring Transparent Hugepages; [always], [madvise], or [never]

We have a bunch of general purpose Centos 7 LAMP stack servers that run apache with underlying MariaDB databases. From the RedHat Performance Tuning docs for RHEL 6: Trasparent Hugepages (THP) hides much of the complexity in using huge pages from…
Arth
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DEFROUTE vs GATEWAY in RHEL7

I've disabled Network Manager and I'm using ifcfg- scripts for network configuration. And I'm trying to find the difference between DEFROUTE="yes" and GATEWAY options. I understand that "ifcfg files are parsed in numerically ascending order, and…
Roman_T
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How to fine tune TCP performance on Linux with a 10Gb fiber connection

We have 2 Red Hat servers that are dedicated for customer speedtest. They both use 10Gb fiber connections and sit on 10Gb links. All network gear in between these servers fully support 10Gb/s. Using Iperf or Iperf3 the best I can get is around…
user53029
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