Note: The output fields vary depending on the version of MongoDB, underlying operating system platform, the storage engine, and the kind of node, including mongos , mongod or replica set member. For the serverStatus output specific to the version of your MongoDB, refer to the appropriate version of the MongoDB Manual. Changed in version 3.0: The server status output no longer includes the workingSet , indexCounters , and recordStats sections. The server-status-instance-information section displays information regarding the specific mongod and mongos and its state. The server-status-asserts document reports the number of assertions or errors produced by the server: The server-status-backgroundflushing document reports on the process MongoDB uses to write data to disk. The server-status-backgroundflushing information only returns for instances that use the MMAPv1 storage engine: The server-status-connections field reports on MongoDB’s current number of open incoming connections: New in version 2.4: The totalCreated field. The server-status-cursors document reports on current cursor use and state: 297 5.3. Administration Reference "cursors" : { "note" : "deprecated, use server status metrics", "clientCursors_size" : <num>, "totalOpen" : <num>, "pinned" : <num>, "totalNoTimeout" : <num>, "timedOut" : <num> }, "connections" : { "current" : <num>, "available" : <num>, "totalCreated" : NumberLong(<num>) }, "backgroundFlushing" : { "flushes" : <num>, "total_ms" : <num>, "average_ms" : <num>, "last_ms" : <num>, "last_finished" : ISODate("") }, "asserts" : { "regular" : <num>, "warning" : <num>, "msg" : <num>, "user" : <num>, "rollovers" : <num> }, "host" : "<hostname>", "version" : "<version>", "process" : "<mongod|mongos>", "pid" : <num>, "uptime" : <num>, "uptimeMillis" : <num>, "uptimeEstimate" : <num>, "localTime" : ISODate(""), MongoDB Documentation, Release 3.0.4