### What is the problem that needs to be solved?
All possible error states and failures reported in the `mongod` and `mongos` log files are not raised as alerts in the Ops Manager alerting system. This prevents users from configuring alerts on important events in MongoDB deployments.
### Why is it a problem? (the pain)
For some users specific errors such as FATAL or ERROR lines in the `mongod` log need to be alerted and addressed with urgency. Since the specific high priority event is different for different users, a configurable, string matching (regex) driven alerting system that constantly monitors the `mongod` and `mongos` log files is needed for maximum flexibility.