If a man speaks in a forest, and his wife's not there, is he still wrong?

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zabbix on CentOS 5

I've recently been asked to investigate Zabbix and found this guide to installing Zabbix 1.4 on CentOS.

However, I also found that Zabbix RPMs are available in the EPEL repository, which makes installation much mores straight-forward.

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flac 1.1.4 on FC6 - fix SELinux errors

I wanted to install flac v1.1.4 on my FC6 box but there is no RPM for FC6.

I installed from source but got this error when running flac:

flac: error while loading shared libraries: /usr/lib/libFLAC.so.8: cannot restore segment prot after reloc: Permission denied

This is an SELinux problem. I fixed it using:

chcon -t textrel_shlib_t /usr/lib/libFLAC.so.8*
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Using eth1 with xen (instead of eth0)

I have a xen box running FC6 with a couple of guest machines (also running FC6). The hardware has two network interfaces, eth0 (10/100MB/s) and eth1 (1GB/s). I was using eth0 as the primary interface but I've just got a gigabit switch and want to move the machine onto it. So I've reconfigured the host to use eth1 as the primary interface.

Here's what I needed to change to get xen to use the new interface.
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java on CentOS 5

I recently needed to install Java onto a CentOS 5 machine.
Instructions are available at http://wiki.centos.org/HowTos/JavaOnCentOS but I found that they didn't work with the latest JDK from Sun.
Here's what I did:
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Building kaffeine from svn source on FC5

Here's how to build kaffeine from the latest svn source on FC5.

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First sample Rails app working!

Ok, I finally got something working. I decided to work through the example in Dave Thomas' book 'Agile Web Development with Rails: A Pragmatic Guide'

(This book is not officially released until July 2005 but the authors have released a "beta" version in PDF format)

The example uses MySQL but I have translated the MySQL SQL code to Postgresql code.

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Rails with Postgresql

My first attempts at using Rails with MySQL weren't all that successful - I'm not sure why. However, as I intend to use Postresql in the long run, I decided to install the Rails Postgresql adapter.
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Getting started with Postgresql 8.0.3

Every time I come back to postgresql I always struggle with getting the authentication set up so I've decided to document it!

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Ruby On Rails with Apache2

I quite fancy getting up to speed with Ruby On Rails as it looks like a very powerful web app development environment. I'll probably end up running this from lighttpd, but that's one learning curve too many so, for now, I decided to get it running on my Fedora Core 4 box running Apache 2.

Here's what I did.
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Using mutt to read root mail with qmail

I use qmail on all my internal linux boxes, with mailboxes using the Maildir format.

I use mutt to read mail locally but mutt is not configured to use the Maildir format "out-of-the-box".

I found this guide useful, but it still doesn't quite work with qmail because qmail doesn't deliver mail to super-users (e.g. root). Typically, root mail is delivered to the alias user by creating a .qmail-root file in the alias user's home directory.

So, to tell mutt about this I added the following lines to ~root/.muttrc:

set folder="~alias/Maildir/"
set spoolfile="~alias/Maildir/"

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