Another small observation on mismatched Erlang cookies: �Be very sure they actually match, and don't just *look* like they match. �Some editors, which will remain nameless, can be a bit eager to stick whitespace in the file if one capriciously saves it during an inspection visit...<br>
<br><div class="gmail_quote">On Tue, Mar 5, 2013 at 1:36 AM, Emile Joubert <span dir="ltr"><<a href="mailto:emile@rabbitmq.com" target="_blank">emile@rabbitmq.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
Hi,<br>
<div class="im"><br>
<br>
On 05/03/13 03:14, Nathan Shirlberg wrote:<br>
> I cant remember if this the right error message or not, but the erlang<br>
> cookies need to match on all rabbit nodes in the same cluster.<br>
<br>
> On Tuesday, February 26, 2013 2:06:02 PM UTC-6, Chris Chambers wrote:<br>
</div><div class="im">> � � Status of node rabbit@s2cchef ...<br>
> � � Error: unable to connect to node rabbit@s2cchef: nodedown<br>
> � � diagnostics:<br>
> � � - nodes and their ports on s2cchef: [{rabbitmqctl22520,12034}]<br>
> � � - current node: rabbitmqctl22520@s2cchef<br>
> � � - current node home dir: /var/lib/rabbitmq<br>
> � � - current node cookie hash: 7HQZbBfzsJc7oLvzbEsqwA==<br>
<br>
</div>This problem can indeed be caused by mismatched erlang cookies if the<br>
broker logfile contains an entry starting with<br>
"Connection attempt from disallowed node..."<br>
The solution is to verify that the cookies (or their hashes) match and<br>
synchronise them if not.<br>
<br>
The troubleshooting page lists other possible causes and solutions:<br>
<a href="http://www.rabbitmq.com/troubleshooting.html" target="_blank">http://www.rabbitmq.com/troubleshooting.html</a><br>
<br>
<br>
<br>
-Emile<br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
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</blockquote></div><br>