1, 监视一个mongod
mongostat 10.80.1.1:27018
1,监视replica set
mongostat --host rs0/10.80.1.1:27018,10.80.1.2:27018,10.80.1.3:27018 --username youruser --password yourpassword --authenticationDatabase admin
2,监视mongos
mongostat 10.80.1.1:27017
原文：http://blog.csdn.net/alexwang1983/article/details/46364643