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