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<channel>
	<title>Backdrift &#187; linux</title>
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	<link>http://backdrift.org</link>
	<description></description>
	<lastBuildDate>Sun, 29 Aug 2010 20:41:40 +0000</lastBuildDate>
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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>
		<comments>http://backdrift.org/resolving-puppet-error-could-not-retrieve-catalog-from-remote-server-undefined-method-closed-for-nilnilclass#comments</comments>
		<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: undefined method `closed?' [...]]]></description>
		<wfw:commentRss>http://backdrift.org/resolving-puppet-error-could-not-retrieve-catalog-from-remote-server-undefined-method-closed-for-nilnilclass/feed</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>NetApp Network Ports</title>
		<link>http://backdrift.org/netapp-network-ports</link>
		<comments>http://backdrift.org/netapp-network-ports#comments</comments>
		<pubDate>Tue, 17 Aug 2010 19:11:04 +0000</pubDate>
		<dc:creator>Keith</dc:creator>
				<category><![CDATA[Uncategorized]]></category>
		<category><![CDATA[filer]]></category>
		<category><![CDATA[linux]]></category>
		<category><![CDATA[netapp]]></category>
		<category><![CDATA[networking]]></category>
		<category><![CDATA[ontap]]></category>
		<category><![CDATA[port]]></category>
		<category><![CDATA[server]]></category>
		<category><![CDATA[storage]]></category>
		<category><![CDATA[tcp]]></category>
		<category><![CDATA[troubleshooting]]></category>
		<category><![CDATA[udp]]></category>
		<category><![CDATA[unix]]></category>

		<guid isPermaLink="false">http://backdrift.org/?p=781</guid>
		<description><![CDATA[This is the most complete list of ports used by NetApp filers that I have been able to find to date.  It is from the /etc/services file that NetApp provides within their firmware that they have updated to show only services consumed or served by a NetApp filer.
This is taken from Data ONTAP firmware [...]]]></description>
		<wfw:commentRss>http://backdrift.org/netapp-network-ports/feed</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>How to Generate Random UNIX Passwords</title>
		<link>http://backdrift.org/how-to-generate-random-unix-passwords</link>
		<comments>http://backdrift.org/how-to-generate-random-unix-passwords#comments</comments>
		<pubDate>Thu, 29 Jul 2010 02:08:50 +0000</pubDate>
		<dc:creator>Keith</dc:creator>
				<category><![CDATA[Uncategorized]]></category>
		<category><![CDATA[howto]]></category>
		<category><![CDATA[linux]]></category>
		<category><![CDATA[password]]></category>
		<category><![CDATA[security]]></category>
		<category><![CDATA[sysadmin]]></category>
		<category><![CDATA[tips]]></category>
		<category><![CDATA[unix]]></category>

		<guid isPermaLink="false">http://backdrift.org/?p=758</guid>
		<description><![CDATA[There are probably a million and one individual pieces of software and websites you can use to generate a randomized password string.  But the truth of the matter is that, if you have a UNIX machine, you don&#8217;t need them at all!  Here&#8217;s how to generate a randomized password using widely available UNIX [...]]]></description>
		<wfw:commentRss>http://backdrift.org/how-to-generate-random-unix-passwords/feed</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>How to SCP from host to host from a central machine</title>
		<link>http://backdrift.org/how-to-scp-from-host-to-host-from-a-central-machine</link>
		<comments>http://backdrift.org/how-to-scp-from-host-to-host-from-a-central-machine#comments</comments>
		<pubDate>Tue, 20 Jul 2010 20:04:08 +0000</pubDate>
		<dc:creator>Keith</dc:creator>
				<category><![CDATA[Uncategorized]]></category>
		<category><![CDATA[copy]]></category>
		<category><![CDATA[linux]]></category>
		<category><![CDATA[pipe]]></category>
		<category><![CDATA[scp]]></category>
		<category><![CDATA[ssh]]></category>
		<category><![CDATA[sysadmin]]></category>
		<category><![CDATA[tar]]></category>
		<category><![CDATA[unix]]></category>

		<guid isPermaLink="false">http://backdrift.org/?p=586</guid>
		<description><![CDATA[Thanks to the fact that ssh can tunnel standard input, however, there is a simple way to effectively scp directly from remote host to remote host using your machine as an intermediary.  Here's how.]]></description>
		<wfw:commentRss>http://backdrift.org/how-to-scp-from-host-to-host-from-a-central-machine/feed</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Online ext3 grow / resize with lvm</title>
		<link>http://backdrift.org/online-ext3-grow-resize-with-lvm</link>
		<comments>http://backdrift.org/online-ext3-grow-resize-with-lvm#comments</comments>
		<pubDate>Tue, 20 Jul 2010 15:50:37 +0000</pubDate>
		<dc:creator>Keith</dc:creator>
				<category><![CDATA[Uncategorized]]></category>
		<category><![CDATA[ext3]]></category>
		<category><![CDATA[extend]]></category>
		<category><![CDATA[grow]]></category>
		<category><![CDATA[linux]]></category>
		<category><![CDATA[lvm]]></category>
		<category><![CDATA[online]]></category>
		<category><![CDATA[resize]]></category>
		<category><![CDATA[resize2fs]]></category>
		<category><![CDATA[storage]]></category>
		<category><![CDATA[sysadmin]]></category>

		<guid isPermaLink="false">http://backdrift.org/?p=575</guid>
		<description><![CDATA[Performing an on-line resize of /dev/vg0/vol_mysql to 2883584 (4k) blocks.
The filesystem on /dev/vg0/vol_mysql is now 2883584 blocks long.]]></description>
		<wfw:commentRss>http://backdrift.org/online-ext3-grow-resize-with-lvm/feed</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Automatic VPN login on connect with ssh and vpnc</title>
		<link>http://backdrift.org/automatic-vpn-login-on-connect-with-ssh-and-vpnc</link>
		<comments>http://backdrift.org/automatic-vpn-login-on-connect-with-ssh-and-vpnc#comments</comments>
		<pubDate>Thu, 15 Jul 2010 19:43:02 +0000</pubDate>
		<dc:creator>Keith</dc:creator>
				<category><![CDATA[Uncategorized]]></category>
		<category><![CDATA[automation]]></category>
		<category><![CDATA[howto]]></category>
		<category><![CDATA[linux]]></category>
		<category><![CDATA[networking]]></category>
		<category><![CDATA[proxycommand]]></category>
		<category><![CDATA[ssh]]></category>
		<category><![CDATA[unix]]></category>
		<category><![CDATA[vpn]]></category>
		<category><![CDATA[vpnc]]></category>

		<guid isPermaLink="false">http://backdrift.org/?p=558</guid>
		<description><![CDATA[To automate this, we will place the VPNC command into the ProxyCommand string as well as a small test condition to determine if a session is already running.  Additionally, we need to include the nc command string.  This is so that ssh can pass data through to the host after the command has been run.  Finally, I have redirected stdout for VPNC to stderr so that it is printed to the terminal while being used as a ProxyCommand.]]></description>
		<wfw:commentRss>http://backdrift.org/automatic-vpn-login-on-connect-with-ssh-and-vpnc/feed</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>How to ping a TCP port</title>
		<link>http://backdrift.org/how-to-ping-a-tcp-port</link>
		<comments>http://backdrift.org/how-to-ping-a-tcp-port#comments</comments>
		<pubDate>Thu, 15 Jul 2010 05:19:02 +0000</pubDate>
		<dc:creator>Keith</dc:creator>
				<category><![CDATA[Uncategorized]]></category>
		<category><![CDATA[howto]]></category>
		<category><![CDATA[hping]]></category>
		<category><![CDATA[linux]]></category>
		<category><![CDATA[networking]]></category>
		<category><![CDATA[ping]]></category>
		<category><![CDATA[port]]></category>
		<category><![CDATA[rsync]]></category>
		<category><![CDATA[syn]]></category>
		<category><![CDATA[tcp]]></category>
		<category><![CDATA[unix]]></category>

		<guid isPermaLink="false">http://backdrift.org/?p=550</guid>
		<description><![CDATA[Ping is an extremely useful utility for troubleshooting network connectivity.  However, on today&#8217;s networks, pings are often discarded.  And with the prevalence of firewalls and load balancers it is often necessary to test the availability and response time of a particular port anyway.  The hping utility allows us to do exactly this, [...]]]></description>
		<wfw:commentRss>http://backdrift.org/how-to-ping-a-tcp-port/feed</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>How to use bind mounts in linux</title>
		<link>http://backdrift.org/how-to-use-bind-mounts-in-linux</link>
		<comments>http://backdrift.org/how-to-use-bind-mounts-in-linux#comments</comments>
		<pubDate>Thu, 15 Jul 2010 04:34:45 +0000</pubDate>
		<dc:creator>Keith</dc:creator>
				<category><![CDATA[Uncategorized]]></category>
		<category><![CDATA[bind]]></category>
		<category><![CDATA[fstab]]></category>
		<category><![CDATA[howto]]></category>
		<category><![CDATA[linux]]></category>
		<category><![CDATA[mount]]></category>
		<category><![CDATA[partition]]></category>
		<category><![CDATA[storage]]></category>
		<category><![CDATA[sysadmin]]></category>
		<category><![CDATA[tips]]></category>
		<category><![CDATA[unix]]></category>

		<guid isPermaLink="false">http://backdrift.org/?p=540</guid>
		<description><![CDATA[Have you ever dealt with a system that wasn&#8217;t partitioned properly when it was built and now it has gone into production?  You&#8217;ll probably be hard pressed to find the time and patience to rebuild the system any time soon.  Luckily there is a way to step around many of the limitations of [...]]]></description>
		<wfw:commentRss>http://backdrift.org/how-to-use-bind-mounts-in-linux/feed</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Automounting iSCSI with Autofs</title>
		<link>http://backdrift.org/automounting-iscsi-with-autofs</link>
		<comments>http://backdrift.org/automounting-iscsi-with-autofs#comments</comments>
		<pubDate>Thu, 06 May 2010 04:12:17 +0000</pubDate>
		<dc:creator>Keith</dc:creator>
				<category><![CDATA[Uncategorized]]></category>
		<category><![CDATA[autofs]]></category>
		<category><![CDATA[automount]]></category>
		<category><![CDATA[backup]]></category>
		<category><![CDATA[bash]]></category>
		<category><![CDATA[equallogic]]></category>
		<category><![CDATA[ext3]]></category>
		<category><![CDATA[iSCSI]]></category>
		<category><![CDATA[linux]]></category>
		<category><![CDATA[san]]></category>
		<category><![CDATA[scripting]]></category>
		<category><![CDATA[storage]]></category>
		<category><![CDATA[sysadmin]]></category>

		<guid isPermaLink="false">http://backdrift.org/?p=498</guid>
		<description><![CDATA[I use SAN snapshots extensively to provide point-in-time recoverability for a number of different systems.  This is a very reliable and efficient backup solution but it comes at the cost of additional complexity for individual file restoration.  This is because the snapshot backups are of the entire volume and not each individual file. [...]]]></description>
		<wfw:commentRss>http://backdrift.org/automounting-iscsi-with-autofs/feed</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Simple Apache Firewall Using mod_rewrite</title>
		<link>http://backdrift.org/simple-apache-firewall-using-mod_rewrite</link>
		<comments>http://backdrift.org/simple-apache-firewall-using-mod_rewrite#comments</comments>
		<pubDate>Wed, 28 Apr 2010 03:10:33 +0000</pubDate>
		<dc:creator>Keith</dc:creator>
				<category><![CDATA[Uncategorized]]></category>
		<category><![CDATA[apache]]></category>
		<category><![CDATA[firewall]]></category>
		<category><![CDATA[http]]></category>
		<category><![CDATA[linux]]></category>
		<category><![CDATA[mod_rewrite]]></category>
		<category><![CDATA[security]]></category>
		<category><![CDATA[sysadmin]]></category>
		<category><![CDATA[web]]></category>

		<guid isPermaLink="false">http://backdrift.org/?p=477</guid>
		<description><![CDATA[Today, most web sites are powered by content management systems.  And while this is great news for most users and content writers it can spell disaster for system administrators and webmasters.  These systems can be incredibly complex and often lack robust security hardening and auditing features.  In order to make up for [...]]]></description>
		<wfw:commentRss>http://backdrift.org/simple-apache-firewall-using-mod_rewrite/feed</wfw:commentRss>
		<slash:comments>0</slash:comments>
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