Getting Started
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To begin troubleshooting, complete these tasks to check for common, easily fixed problems:
Authentication Errors
If your MongoDB instances run with authentication enabled, ensure Ops Manager has the MongoDB credentials. To learn more, see Configure MongoDB Authentication and Authorization.
Check Agent Output or Log
If you continue to encounter problems, check the agent's output for errors. To learn more, see Agent Logs for more information.
Ensure Connectivity Between Agent and Monitored Hosts
Ensure the system running the agent can resolve and connect to the
mongod processes. If you install multiple Monitorings, ensure that each Monitoring can reach every
mongod process in the deployment.
To confirm, log into the system where the agent is running and issue a command in the following form:
mongosh <hostname>:<port>
Replace <hostname> with the hostname and <port> with the
port that the database is listening on.
Ops Manager does not support port forwarding.
Ensure Connectivity Between Agent and Ops Manager Server
Verify that the Monitoring can connect on TCP port 8443
(outbound) to the Ops Manager server (i.e. api-agents.mongodb.com.)
Allow Agent to Discover Hosts and Collect Initial Data
Allow the agent to run for 5 to 10 minutes to allow host discovery and initial data collection.