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	<title>Backdrift &#187; systems administration</title>
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		<title>Resolving Puppet Error: Could not retrieve catalog from remote server: undefined method `closed?&#8217; for nil:NilClass</title>
		<link>http://backdrift.org/resolving-puppet-error-could-not-retrieve-catalog-from-remote-server-undefined-method-closed-for-nilnilclass</link>
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		<pubDate>Sun, 29 Aug 2010 20:41:40 +0000</pubDate>
		<dc:creator>Keith</dc:creator>
				<category><![CDATA[Uncategorized]]></category>
		<category><![CDATA[ec2]]></category>
		<category><![CDATA[linux]]></category>
		<category><![CDATA[puppet]]></category>
		<category><![CDATA[ruby]]></category>
		<category><![CDATA[sysadmin]]></category>
		<category><![CDATA[systems administration]]></category>
		<category><![CDATA[troubleshooting]]></category>

		<guid isPermaLink="false">http://backdrift.org/?p=797</guid>
		<description><![CDATA[I came across this odd puppet error while setting up a puppet client on a host running in amazon EC2 and it took me a bit of head scratching to figure it out. (/File[/var/lib/puppet/lib]) Failed to generate additional resources using 'eval_generate': undefined method `closed?' for nil:NilClass &#160; (/File[/var/lib/puppet/lib]) Failed to retrieve current state of resource: [...]]]></description>
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		<title>Live Migration and Synchronous Replicated Storage With Xen, DRBD and LVM</title>
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		<comments>http://backdrift.org/live-migration-and-synchronous-replicated-storage-with-xen-drbd-and-lvm#comments</comments>
		<pubDate>Sun, 11 Jan 2009 18:09:29 +0000</pubDate>
		<dc:creator>Keith</dc:creator>
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		<category><![CDATA[drbd]]></category>
		<category><![CDATA[high availability]]></category>
		<category><![CDATA[infrastructure]]></category>
		<category><![CDATA[linux]]></category>
		<category><![CDATA[lvm]]></category>
		<category><![CDATA[redhat]]></category>
		<category><![CDATA[scalability]]></category>
		<category><![CDATA[storage]]></category>
		<category><![CDATA[systems administration]]></category>
		<category><![CDATA[unix]]></category>
		<category><![CDATA[Virtualization]]></category>
		<category><![CDATA[Xen]]></category>

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		<description><![CDATA[Xen LVM &#38; DRBD Overview The Xen Hypervisor provides a great deal of flexibility and high availability options when it comes to deploying virtual machines. One of the most attractive features it offers is called live migration. Live migration is the ability to take a running virtual machine (&#8220;domU&#8221;) and move it from one Xen [...]]]></description>
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