Description
At http://docs.mongodb.org/manual/tutorial/restore-sharded-cluster/ step 2.a has instructions to start the three config servers, but step 2 is only used if the hostnames of the nodes has changed. If step 2 is not used, then the process would read to:
3. Restart all the mongos instances.
4. Restart all the mongod instances.
Which would start the mongos nodes without the config server running, and will fail.
Need to include a line (potentially another step) indicating to start the config servers (if not already done) prior to step 3.