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Getting Started

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 Monitoring Agents, ensure that each Monitoring Agent 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:

mongo <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 Agent 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.