rassi@rassi:~/work/mongo$ ~/mongodb-linux-x86_64-2.6.5/bin/mongod --fork --logpath /dev/null
about to fork child process, waiting until server is ready for connections.
forked process: 5847
child process started successfully, parent exiting
rassi@rassi:~/work/mongo$ ~/mongodb-linux-x86_64-2.7.8/bin/mongos --configdb=localhost:27017 --port 30000 --fork --logpath /dev/null
2014-11-10T13:29:28.120-0500 W SHARDING running with 1 config server should be done only for testing purposes and is not recommended for production
about to fork child process, waiting until server is ready for connections.
forked process: 5860
child process started successfully, parent exiting
rassi@rassi:~/work/mongo$ ~/mongodb-linux-x86_64-2.6.5/bin/mongo --port 30000
MongoDB shell version: 2.6.5
connecting to: 127.0.0.1:30000/test
Server has startup warnings:
2014-11-10T13:29:28.125-0500 I -
2014-11-10T13:29:28.125-0500 I -        ** NOTE: This is a development version (2.7.8) of MongoDB.
2014-11-10T13:29:28.125-0500 I -        **       Not recommended for production.
2014-11-10T13:29:28.125-0500 I -
mongos> sh.addShard("localhost:27017")
{ "shardAdded" : "shard0000", "ok" : 1 }
mongos> sh.enableSharding("test")
{ "ok" : 1 }
mongos> sh.shardCollection("test.foo", {_id: 1})
{ "collectionsharded" : "test.foo", "ok" : 1 }
mongos> db.foo.find().explain()
2014-11-10T13:30:21.666-0500 error: { "$err" : "invalid parameter: expected an object ()", "code" : 10065 } at src/mongo/shell/query.js:131