The rabbitmqctl status command can be used to list the enabled plugins. Or, the rabbitmq-plugins command can be used, to list both the enabled and available plugins.

rabbitmqctl status

Something like this should be returned.

Plugins

Enabled plugin file: /etc/rabbitmq/enabled_plugins
Enabled plugins:

 * rabbitmq_message_timestamp
 * rabbitmq_prometheus
 * rabbitmq_shovel_management
 * rabbitmq_management
 * rabbitmq_web_dispatch
 * rabbitmq_auth_backend_ldap
 * rabbitmq_management_agent
 * rabbitmq_shovel
 * amqp_client
 * cowboy
 * cowlib
 * amqp10_client
 * amqp10_common
 * prometheus