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POTrouble connecting to Mongo Config Server from mongos
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  1. POTrouble connecting to Mongo Config Server from mongos
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    copied!<p>Folks,</p> <p>I am setting up a MongoDB Cluster. The problem is when I am starting up 'mongos' it fails to connect to Mongod Config Server. If I start 'mongos' from localhost with same server as Mongod Config Server it connects &amp; works.</p> <p>localhost-$ mongos --port 30000 --configdb server-02:20000 [<strong>Works</strong>]</p> <p>server-01-$ mongos --port 30000 --configdb server-02:20000 [<strong>Does Not Work</strong>]</p> <p>Since from localhost I am able to start mongos by connecting to mongo config server &amp; execute queries, it appears that config server is running fine.</p> <p>Not able to understand what prevents servers to connect to one of their peers. When I attemped to connect first time from localhost, I got a prompt from OS asking whether process 'mongos' should be allowed to accept incoming connections for which I clicked allow. Perhaps if server fails silently because of this permission issue, with no way to prompt.</p> <p><strong>Error I recieve:</strong></p> <p>Sun May 8 01:14:46 ./mongos db version v1.8.1, pdfile version 4.5 starting (--help for usage) Sun May 8 01:14:46 git version: a429cd4f535b2499cc4130b06ff7c26f41c00f04 Sun May 8 01:14:46 build sys info: Linux bs-linux64.10gen.cc 2.6.21.7-2.ec2.v1.2.fc8xen #1 SMP Fri Nov 20 17:48:28 EST 2009 x86_64 BOOST_LIB_VERSION=1_41 uncaught exception in mongos main: 11002 socket exception [6] server [server-02:20000] mongos connectionpool error: couldn't connect to server server-02:20000</p> <hr> <p>Well I did try clean install yet the problem persisted, so I moved my mongos to a different server with new install &amp; it appears to connect to config server without any issue. Apparently there is some sort of socket contention issue with first server I tried to run mongos.</p>
 

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