var MongoClient = require('./').MongoClient; MongoClient.connect('mongodb://localhost:31000,localhost:31001/test?replSet=rs&connectionTimeoutMS=5000', { server: { monitoring: true, haInterval: 1000, connectTimeoutMS: 5000 } }, function(err, db) { console.dir(err) // console.log(db.serverConfig.connections()[0]) // db.close(); });