Get the actual node being used when connecting to a MongoDB replicaSet

Question

I'm querying data from a mongoDB replica-set. The queries take quite a long time and I'd like to be sure that the data is not being read from the wrong node.

Is it possible to get the actual node being used for a given query?

I'm using the PHP mongoDB client.

Answer 1

Once you have run the query and started iterating the cursor, it is possible to get information about the host where the query is run. You can get it by running info() method on cursor object. Check this - php.net/manual/en/mongocursor.info.php