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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.

3259 questions
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How can I mirror a yum repository but download only the newest versions of each package?

I would like to mirror the following Yum/RPM repositories at http://yum.puppetlabs.com/…
Stefan Lasiewski
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How to make NTP work despite a high offset?

Recently I have kickstarted some servers that had their time off by a month in the bios. The time in the bios said it was a random time/date in May, while it was June. This caused NTP not to work, because NTP doesn't sync with such a high offset.…
ujjain
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NFSv4 not able to set any sockets for nfsd without running rpcbind

According to Red Hat docs 'rpcbind' is not required any more: Because protocol support has been incorporated into the v4 protocol, NFSv4 has no interaction with the portmap, rpc.lockd, and rpc.statd daemons. NFSv4 listens on the well-known TCP…
HTF
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Understanding RedHat's recommended tuned profiles

We are going to roll out tuned (and numad) on ~1000 servers, the majority of them being VMware servers either on NetApp or 3Par storage. According to RedHats documentation we should choose the virtual-guestprofile. What it is doing can be seen here:…
espenfjo
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Checking yum connectivity from a script?

When there is a problem with access to yum repos (for example if a needed proxy isn't configured), running a command like 'yum update' will wait for a very long time trying lots of different mirrors. Sometimes that is good, but sometimes I would…
kdt
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Red Hat Satellite vs. Ubuntu Landscape

We have some experience using Red Hat Satellite in an environment with ~120 servers. Now we're looking into deploying Ubuntu in parallel for the further growth. How does Landscape compare to Satellite with regards to features and usability?
Nils-Anders Nøttseter
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Prevent Amazon EC2 Time zone from reverting back on yum update

I use an Amazon EC2 server instance that runs a distro called Amazon Linux AMI. (I've read that it is based on CentOS/Red Hat). My specific version is the 2012.09 release. Anyway, I was able to change the time zone about a week ago from the default…
D.Tate
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Methods for analyzing Red Hat sosreport output?

For some time (since EL 4.6), Red Hat has embedded a system report and troubleshooting tool into the operating system. The tool, sosreport, collects system information and settings and bundles it into a tar.bz archive for easy distribution.…
ewwhite
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Clone kvm/qemu VM to a different server

What's the easiest/quickest way to clone a VM from one server onto another if you don't have shared storage between the two servers (so you can't do a standard migration)? I have a production ready VM installed on one server, and I want to clone it…
Andrew Case
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Deploy internal CA to linux clients

I have a large number of workstations that run RedHat Enterprise Linux 5 and 6. I'd like to deploy our new internal CA (Active Directory) to these machines. I can manually import the certificate into Firefox 10 without any issues, but I can't seem…
Kyle Smith
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Can I set up Fedora or Centos repos in RHEL6?

I have a RHEL6 box with no subscription to Red Hat Network. I want to install gcc using yum to resolve all the complex dependencies. Can I connect to Fedora or Centos repositories to install software? If so, how?
Liam
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Generate 10 Gbps traffic across nodes

I want perform a network performance benchmarking test so need to generate a 10 Gbps traffic in the network. The nodes are running RHEL 5.x. Can anyone please point me out to suitable binaries etc. Can we use the iperf and netperf commands to…
Iliyas Shirol
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What does a Ubuntu Server admin need to know about CentOS

I've been on Ubuntu Server for the past several (5-ish) years, but I am seeing a lot of jobs that are looking for RHEL or CentOS experience. What differences, aside from package managers (dpkg/apt/.debs vs yum/.rpms) do I need to be aware of if I…
gWaldo
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How do i view / enable kernel logs on centos / red hat linux?

Possible Duplicate: How do i view / enable kernel logs on an ec2 instance (amazon linux)? I've got a centos server that i'm playing around with TCP settings in the sysctl.conf to increase the number of concurrent TCP connections it can handle,…
Chris
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Red Hat server minimal install

In a farm of virtualized Red Hat servers, there's the need to install a minimal system for security reasons. Minimal installs have several advantages (even no security related): Less exposure to vulnerabilities (if you don't need it, don't install…
chmeee
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