Categories: Linux, Sysadmin

Into Web Hosting .. Deploying CentOS images in a Cloud ?

by Karanbir Singh Email

If you are a web hosting company and deploying CentOS 5 or 6 images in a Cloud, I want to speak with you. Please get in touch via one of the mechanisms listed at : http://www.karan.org/contact.html Alternatively, if you use services from a hosting co… more »

Time for CentOS-5.8

by Karanbir Singh Email

Looks like EL5.8 just got released upstream. Lots of sources just showed up on the ftp sites. Time to start up the CentOS-5 buildsystem. more »

Communities and Questions

by Karanbir Singh Email

I am often surprised by the sort of questions asked in the forums or on irc around open source projects - it just feels as if people are going out of their way to inflict pain and suffering upon themselves by trying to find the most awkward and most com… more »

A few notes on SSDs in Laptops

by Karanbir Singh Email

I've now had the SSD in my laptop for about 10 days. Its made a massive difference to the way I work. Its striking as to how much of a difference having this extra performance in the laptop would make. In march I upgraded the memory on this laptop fr… more »

Release for CentOS-6.0 i386 and x86_64

by Karanbir Singh Email

We are pleased to announce the immediate availability of CentOS-6.0 for i386 and x86_64 Architectures. CentOS-6.0 is based on the upstream release EL 6.0 and includes packages from all variants. All upstream repositories have been combined into… more »

RHEL 6.1 and CentOS 6.x

by Karanbir Singh Email

Earlier in the day today Red Hat released RHEL 6.1 ( http://www.redhat.com/about/news/prarchive/2011/Red-Hat-Delivers-Red-Hat-Enterprise-Linux-6-1 ). Congratulations to them, it looks like a great release with lots of cool new stuff in there. Most peo… more »

Sign multiple rpms with one command

by Karanbir Singh Email

Trying to sign a bunch of rpms usually means having to type in your password for the gpg key multiple times, once for each rpm. However, you can avoid doing that with this :rpm --resign `find `pwd` -name *.rpm`That will only prompt you once for t… more »

CentOS 5.6 is now Released!

by Karanbir Singh Email

Hi Guys, CentOS 5.6 is now out and available from all mirrors. In the next few hours, all yum operations will switch from 5.5 to 5.6 ( for people who run the default yum configs ). All the Release Details : http://lists.centos.org/pipermail/centos-… more »

Why we needed to reissue the CentOS-5.6/x86_64 ISOs

by Karanbir Singh Email

What was the issue:There was an invalid rpm ( eclipse-ecj ) in the x86_64/os tree. Premature EOF in rpm payload.Report:Early morning on the 7th James Hogarth, BSkyB Entertainment repoted to the QA team that there was an issue with the eclipse… more »

CentOS-5.6 Release Status

by Karanbir Singh Email

Couple of things that should answer most questions that people are asking about the 5.6 Release status: TimeLine: Stuff is syncing around, it could be upto another day before you see packages, tree and isos on your local mirrors. Updates: Yes,… more »

A CentOS Ruby Interest group

by Karanbir Singh Email

Firstly, CentOS is super popular out there with the ruby guys and there are quite a few ruby based apps deployed on CentOS these days. Secondly, every man - his dog - and kitchen sink seem to be building ruby rpms. Not apps or gems or anything, but Ru… more »

Agile methodologies for distributed community driven development

by Karanbir Singh Email

People who have been following the centos-devel list would have noticed a ressurection of the CnetOS website Ver2 effort[1]. Which is a great sign, however, the intensity and the enthusiasm shown is about at par with the efforts that went into creating t… more »

RHEL Packages moving between fastrack and core distro

by Karanbir Singh Email

A while back, Red Hat started pushing out early-releases for some updates. I'm guessing it was due to customers and users asking for eary access to trivial fix's. These early releases were put into a repository ( channel for you RHN users! ) called fastr… more »

gitosis and 'Arguments to command look dangerous'

by Karanbir Singh Email

Trying to pull from a remote repo, just ran into this strange error being reported by gitosis. ERROR:gitosis.serve.main:Arguments to command look dangerous And in typical gitosis ways, its down to trawling the sources to workout what the problem… more »

open source V/s open service

by Karanbir Singh Email

Should open source projects, not focused on source or code at all but more on a service or a resource, really be called 'open source' projects ? I feel there might be a need to define the idea of an 'open service' or an 'open resource' project.- KB more »

New Years resolution, number 1

by Karanbir Singh Email

I've never been big on new years resolutions, but this year I have one. To Blog. Started off initially as a 'I should blog more often', then I realised that I didnt really blog much at all through 2009 and 2010. So the aim is to change that : 2011 will b… more »

Good time to not use mysql replication

by Karanbir Singh Email

if you insert data using server side metadata like now(), there is a very high possibility that the replica you have running will not get the same information. more »

Automate early so you never haveto do something manually more than two times

by Karanbir Singh Email

One fact of life with the sysadmin lifestyle is that most issues are task and event driven rather than project driven. For me, over the last 6 months, the split has been about 80% issue driven and 20% project driven. And most tasks tend to be short, even… more »

Getting started with linux and sysadmin

by Karanbir Singh Email

This question comes up often : how does one get started in the world of Linux sysadmin. And to be honest, I dont think there is a clear answer to that. The state of Linux certification is not ideal. There are a few courses one might get onto, like the RH… more »

vixie-cron and the 7 meta specifications that most people dont know about

by Karanbir Singh Email

@reboot : Run once after reboot. @yearly : Run once a year, ie. "0 0 1 1 *". @annually : Run once a year, ie. "0 0 1 1 *". @monthly : Run once a month, ie. "0 0 1 * *". @weekly : Run once a wee… more »

Postponing the week of rpm-metadata

by Karanbir Singh Email

Hi Guys, A few days back I announced that there will be a 'week of rpm-metadata' hacks, starting from today. With great regret I haveto now announce that this must be postponed for a few weeks. Things are going to be extremely hectic for the next two… more »

A week of rpm-metadata tricks

by Karanbir Singh Email

One of the most under utilised things around in any CentOS sysadmins toolset is the rpm-metadata repositories. Some part of it comes from the fact that most people consider it to be yum specific, and while thats true to quite an extent - its not the only… more »

Is it time to ponder a CentOS/Sparc build again ?

by Karanbir Singh Email

Given the recent developments on the opensolaris front, there is again the issue of what OS do people run on their existing sparc hardware ? And I wonder if now is a good time to consider bringing up the CentOS on Sparc conversations again.I have s… more »

rpms built on EL6beta2 might have an issue with CentOS older than 6

by Karanbir Singh Email

I had to build a fresh set of rpms for the area_cli tools, and decided it was also a good time to rebase some of my local personal build tools to rhel6beta2 since its there and I need to do some tests with it anyway. Firstly, there are a couple of coo… more »

why is there a perl.i386 in my x86_64 install

by Karanbir Singh Email

A question that has come up a few times in the last week. So I thought a blog post about it is in order here. While some people are aware of the situation, most of the people are not. In the early days of EL5, there was a perl.i386 included in the dis… more »

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