Monitor replication
You can use Amazon CloudWatchReplicationLatency, MessageLag, and ReplicatorThroughput at a topic and aggregate level for each MSK Replicator. Metrics are visible under ReplicatorName in the "AWS/Kafka" namespace. You can also see ReplicatorFailure, AuthError, and ThrottleTime metrics to check for issues.
The MSK console displays a subset of CloudWatch metrics for each MSK Replicator. From the console Replicator list, select the name of a Replicator and select the Monitoring tab.
You can also enable log forwarding for your MSK Replicator to gain deeper visibility into replication operations and simplify troubleshooting. MSK Replicator supports forwarding operational logs to Amazon CloudWatch Logs, Amazon S3, and Amazon Data Firehose. By default, log delivery is not enabled. You can configure log delivery when you create or update a Replicator using the logDelivery configuration in the CreateReplicator or UpdateReplicator API request.
For more detailed information on monitoring, metrics, logs, and troubleshooting, see Observability.