Comment 2 for bug 1314514

I reproduced it.

On the first run on 'primary-mongo' role package was installed, service have been started and firewall rule was added:

(/Stage[main]/Mongodb::Server::Install/Package[mongodb_server]/ensure) created
2014-04-30T14:14:01.737951+00:00 notice: (/Stage[main]/Mongodb::Server::Service/Service[mongodb]/ensure) ensure changed 'stopped' to 'running'
2014-04-30T14:14:01.932865+00:00 notice: (/Stage[main]/Mongodb::Firewall/Firewall[120 mongodb]/ensure) created

But then creation of ceilometer database failed:

2014-04-30T14:14:34.133064+00:00 err: (/Stage[main]/Openstack::Mongo_primary/Mongodb::Db[ceilometer]/Mongodb_database[ceilometer]) Could not evaluate: Execution of '/usr/bin/mongo --quiet --eval db.getMon
2014-04-30T14:14:34.133480+00:00 err: (/Stage[main]/Openstack::Mongo_primary/Mongodb::Db[ceilometer]/Mongodb_database[ceilometer]) exception: connect failed

Everything else mongo related failed too and Nailgun started the second try to install primary mongo role

2014-04-30T14:14:48.454325+00:00 notice: ***** Beginning deployment of node node-4 with role primary-mongo *****
2014-04-30T14:14:48.454719+00:00 notice: (/Stage[zero]/Begin_deployment/Notify[***** Beginning deployment of node node-4 with role primary-mongo *****]/message) defined 'message' as '***** Beginning deplo
2014-04-30T14:14:50.811954+00:00 notice: MongoDB params: 127.0.0.1192.168.0.1
2014-04-30T14:14:50.812272+00:00 notice: (/Stage[main]/Openstack::Mongo_primary/Notify[MongoDB params: 127.0.0.1192.168.0.1]/message) defined 'message' as 'MongoDB params: 127.0.0.1192.168.0.1'
2014-04-30T14:14:50.907577+00:00 notice: Installing package mongodb from 2.4.6-1.mira1 to installed
2014-04-30T14:14:51.247689+00:00 notice: (/Stage[main]/Mongodb::Client/Package[mongodb_client]/ensure) ensure changed '2.4.6-1.mira1' to 'installed'
2014-04-30T14:14:51.461579+00:00 notice: mongodb configuring databases
2014-04-30T14:14:51.462026+00:00 notice: (/Stage[main]/Openstack::Mongo_primary/Notify[mongodb configuring databases]/message) defined 'message' as 'mongodb configuring databases'
2014-04-30T14:14:51.776395+00:00 notice: (/Stage[main]/Openstack::Mongo_primary/Mongodb::Db[ceilometer]/Mongodb_database[ceilometer]/ensure) created
2014-04-30T14:14:52.036495+00:00 notice: (/Stage[main]/Openstack::Mongo_primary/Mongodb::Db[ceilometer]/Mongodb_user[ceilometer]/ensure) created
2014-04-30T14:14:52.291130+00:00 notice: (/Stage[main]/Openstack::Mongo_primary/Mongodb::Db[admin]/Mongodb_database[admin]/ensure) created
2014-04-30T14:14:52.540861+00:00 notice: (/Stage[main]/Openstack::Mongo_primary/Mongodb::Db[admin]/Mongodb_user[admin]/ensure) created
2014-04-30T14:14:52.548255+00:00 notice: mongodb primary finished

and everything went fine.

Then controller role was successfuly deployed successfully too and the entire environment is operational.

Why did mongo client failed to connect to the mongo service on the first deployment run? Maybe the was not enough time for mongo to warm up?