kafka-manager

Only compatible with Kafka up to 0.11.*.*, missing support for newer features and security enhancements in recent releases, which limits its use in modern stacks.

For large clusters, administrators must manually configure thread pools and queue sizes in application.conf, as detailed in the README, which can be error-prone and time-consuming.

The KafkaManagedOffsetCache uses a single thread per cluster and is untested with large numbers of offsets, potentially causing bottlenecks and unreliable lag reporting.

LDAP authentication requires SSL configuration and has numerous parameters, making initial setup and maintenance challenging, with warnings about insecure credentials without encryption.