<span class="Apple-style-span" style="border-collapse: collapse; ">Hi all,<div><br></div><div>I'm using RabbitMQ for background processing in a Ruby on Rails environment. �The client application runs in multiple instances via Passenger/nginx on a CentOS 5 server and uses the Bunny gem to send messages to RabbitMQ running on a different CentOS server. �Each of the 15 instances of the RoR application on the client machine opens a connection and keeps it in a threadsafe location for repeated use.</div>
<div><br></div><div>Everything works perfectly on two different deployments of this system but on the third, the clients are getting occasional errors, "Connection closed unexpectedly by peer". �At the same time, I'm not seeing any errors at all in the RabbitMQ log on the other server. �</div>
<div><br></div><div>When the client gets an error sending a message, it creates a new connection and tries passing the message again. �I do see the new connection in rabbit.log but nothing corresponding to the error reported by the client. �The result is a slow but steadily growing number of sockets in use by RabbitMQ; lsof shows an increase of about 150-200 of these sockets per day with state "established". �I haven't watched carefully but it appears these sockets aren't dying, even though they refer to ports that aren't open any more on the client machine.</div>
<div><br></div><div>Since this is happening in only one deployment, my first action was to look for differences in configuration between a working client/server pair and a problem pair, but I'm at a loss to find any. �I know I must be overlooking something. �I've compared ruby gem versions, RabbitMQ versions, Erlang versions, kernel versions, kernel network configuration variables, etc. �I've used netstat -s to look for unusual network problems but I don't see any.</div>
<div><br></div><div>Any suggestions on where to look for the cause of these broken connections? �If that fails, is there a configuration option that lets RabbitMQ close broken connections?</div><div><br></div><div>Thanks,</div>
<div>Mark</div></span>