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	<title>yo61.com</title>
	<link>http://yo61.com</link>
	<description>Web Operations &#38; System Administration in the wilds of North Yorkshire</description>
	<lastBuildDate>Wed, 01 Sep 2010 16:57:55 +0000</lastBuildDate>
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		<title>Fedora 13 as a domu guest with xen 3.4.2 on CentOS 5.5</title>
		<description><![CDATA[I wanted to install a Fedora 13 machine as a paravirtual domu guest on our CentOS 5.5, xen 3.4.2 host. I also wanted to provision it using koan/cobbler. I ran into a few problems along the way, but I got there in the end! Firstly, createrepo in CentOS 5.5 does not work with either the [...]]]></description>
		<link>http://yo61.com/fedora-13-as-a-domu-guest-with-xen-3-4-2-on-centos-5-5.html</link>
			</item>
	<item>
		<title>Updating Dell OMSA on CentOS</title>
		<description><![CDATA[Dell distributes its OMSA software in RPM packages and even has a yum repo available so you&#39;d think that updating to the next version would be as simple as yum update, right? Wrong! You have to remove the old version first, and then install the new version. Oh, and you also need to stop the [...]]]></description>
		<link>http://yo61.com/updating-dell-omsa-on-centos.html</link>
			</item>
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		<title>Bash pitfalls</title>
		<description><![CDATA[Some kind soul on #bash on Freenode recently pointed me at this excellent document: http://mywiki.wooledge.org/BashPitfalls (I ran into #20, in case you&#39;re wondering)]]></description>
		<link>http://yo61.com/bash-pitfalls.html</link>
			</item>
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		<title>Dell DRAC BBU auto-learn tests kill disk performance</title>
		<description><![CDATA[We&#39;ve had a bunch of new servers in place for around 3 months now. They seem to be working well and are performing just fine. Then, out of the blue, our monitoring started throwing alerts on seemingly random servers. Our queues were building up &#8211; basically, database performance had dropped dramatically and our processing scripts [...]]]></description>
		<link>http://yo61.com/dell-drac-bbu-auto-learn-tests-kill-disk-performance.html</link>
			</item>
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		<title>MAC Addresses of embedded NICs on Dell servers through DRAC</title>
		<description><![CDATA[I use cobbler to provision our new Dell servers, which is great but it needs the MAC addresses of the servers to identify each machine. Previously, I have been doing this manually: log in to the DRAC web interface launch the java console rebooting the server go into the BIOS navigate to Embedded Devices manually [...]]]></description>
		<link>http://yo61.com/mac-addresses-of-embedded-nics-on-dell-servers-through-drac.html</link>
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		<title>RPM packages for Toggl Desktop client</title>
		<description><![CDATA[I use the toggl time-tracking service to keep track of the hours I work for my various clients. toggl make available desktop clients for Windows, Mac, &#38; Linux, but the Linux packages are in .deb format for Ubuntu and, until recently, they did not provide x86_64 packages. toggl recently released the desktop client as open [...]]]></description>
		<link>http://yo61.com/rpm-packages-for-toggl-desktop-client.html</link>
			</item>
	<item>
		<title>Dell OMSA on CentOS 5.4 x86_64 &#8211; No Controllers found error</title>
		<description><![CDATA[It seems that several people have been having problems getting Dell OMSA 6.2 to work correctly on CentOS 5.4 x86_64. Specifically, the software does not detect any storage controllers, and therefore also doesn&#39;t find any disks. eg. [root@b034 ~]# omreport storage pdisk controller=0 Invalid controller value. Read, controller=0 No controllers found. After a little investigation, [...]]]></description>
		<link>http://yo61.com/dell-omsa-on-centos-5-4-x86_64-no-controllers-found-error.html</link>
			</item>
	<item>
		<title>Building RPMs from Ruby gems</title>
		<description><![CDATA[I often need to deploy Ruby gems across many CentOS servers. I prefer to use the native OS package management tools (rpm + yum) rather than using Ruby gems. Here&#39;s how to build RPMs from Ruby gems using gem2rpm. I am assuming you have the necessary build tools installed (if not, yum install rpmdevtools) and [...]]]></description>
		<link>http://yo61.com/building-rpms-from-ruby-gems.html</link>
			</item>
	<item>
		<title>Useful date command format string</title>
		<description><![CDATA[When creating backups or log files, I like to name the files with a timestamp, ie. the date plus the time. I use the date command to produce timestamps in the appropriate format, but I find the format specifier a bit long-winded and difficult to remember &#8211; is %m minutes or month? There is a [...]]]></description>
		<link>http://yo61.com/useful-date-command-format-string.html</link>
			</item>
	<item>
		<title>Writing puppet manifests that can remove resources as well as adding them</title>
		<description><![CDATA[I use puppet to manage the configuration of the machines I manage. So far, I&#39;ve been rolling out new resources to machines but recently I&#39;ve wanted to remove resources from machines. Here&#39;s how I modified my cron classes so I could remove cron jobs as well as create them. When I first wrote my cron [...]]]></description>
		<link>http://yo61.com/writing-puppet-manifests-that-can-remove-resources-as-well-as-adding-them.html</link>
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