Collecting MongoDB metrics and statistics

This article discusses three methods to collect MongoDB metrics from your hosts: using utilities offered by MongoDB, using database commands, and using a dedicated monitoring tool for more advanced features. The two main utilities are mongostat and mongotop. Database commands include serverStatus, dbStats, collStats, getReplicationInfo, replSetGetStatus, sh.status, and getProfilingStatus. For production monitoring, MongoDB's management tools like Ops Manager and Cloud Manager can be used. Datadog also offers an integration for extended monitoring functionality.