Tag Archives: open source

Installing EL7 onto EL5 Xen hosts

Posted on 2014-07-21 by Jethro Carr

With RedHat recently releasing RHEL 7 (and CentOS promptly getting their rebuild out the door shortly after), I decided to take the opportunity to start upgrading some of my ageing RHEL/CentOS (EL) systems. My personal co-location server is a trusty … Continue reading →

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Rescuing a corrupt tarfile

Posted on 2014-07-21 by Jethro Carr

Having upgraded OS recently, I was using a poor quality sneakernet of free USB sticks to transfer some data from my previous installation. This dodgy process strangely enough managed to result in some data corruption of my .tar.bz2 file, leaving … Continue reading →

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Funny tasting Squid Resolver

Posted on 2014-07-05 by Jethro Carr

Squid is a very popular (and time tested) proxy server, it’s generally the go-to solution for a  proxy server in a *nix environment and is capable of providing general caching proxy services (including transparent) as well as more sophisticated reverse … Continue reading →

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Thunderbolt and other Macbook hardware issues with Linux

Posted on 2014-06-16 by Jethro Carr

Having semi-recently switched to a Macbook Pro Retina 15″ at work, I decided to give MacOS a go. It’s been interesting, it’s not too bad an operating system and whilst it is something I could use on an ongoing basis, … Continue reading →

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There are no seasons in the datacenter

Posted on 2014-03-22 by Jethro Carr

I always like reviewing the Munin temperature graphs between my co-located server and my home server, the temperature range fluctuations in non-air conditioned rooms is always quite interesting – as much as 25 degrees Celsius over the course of the … Continue reading →

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Fedora x86_64 installer hanging on KVM hosts

Posted on 2014-01-26 by Jethro Carr

Had an annoying problem today where a Fedora x86_64 guest wouldn’t install on my CentOS KVM server. Weirdly the i386 version had installed perfectly, but the x86_64 version would repeatedly crash and chew up heaps of CPU at the software … Continue reading →

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linux.conf.au 2014

Posted on 2014-01-13 by Jethro Carr

I’ve just returned from my annual pilgrimage to linux.conf.au, which was held in Perth this year. It’s the first time I’ve been over to West Australia, it’s a whole 5 hour flight from Sydney –  longer than it takes to … Continue reading →

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Encrypting disk on Android 4

Posted on 2013-12-29 by Jethro Carr

Traditional computer operating systems have been around for a while, long enough that concerns around physical security have been well addressed. We understand the value and power that the information on our computers can provide to an attacker, so we … Continue reading →

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Recovering SW RAID with Ubuntu on Amazon AWS

Posted on 2013-12-29 by Jethro Carr

Amazon’s AWS cloud service is a very popular and generally mature offering, but it does have it’s issues at times – in particular it’s storage options and limited debug facilities. When using AWS, you have three main storage options for … Continue reading →

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Route53 with NamedManager 1.8.0

Posted on 2013-12-22 by Jethro Carr

Just released NamedManager 1.8.0, my open source web-based DNS management tool. This release fixes some bugs with MySQL 5.6 and internationalized domain names, but also includes support for using Amazon AWS Route53 alongside the existing Bind9 support. Just add a … Continue reading →

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