/etc/nagios/ is in nagios-plugins-rabbitmq 1:1.2.0-2.1.
This file is owned by root:root, with mode 0o755.
..
/etc/nagios-plugins/config/
/etc/nagios-plugins/config/check_rabbitmq_aliveness.cfg
/etc/nagios-plugins/config/check_rabbitmq_connections.cfg
/etc/nagios-plugins/config/check_rabbitmq_objects.cfg
/etc/nagios-plugins/config/check_rabbitmq_overview.cfg
/etc/nagios-plugins/config/check_rabbitmq_partition.cfg
/etc/nagios-plugins/config/check_rabbitmq_queue.cfg
/etc/nagios-plugins/config/check_rabbitmq_server.cfg
/etc/nagios-plugins/config/check_rabbitmq_shovels.cfg
/etc/nagios-plugins/config/check_rabbitmq_watermark.cfg
/etc/nagios/nrpe.d/
/etc/nagios/nrpe.d/check_rabbitmq_aliveness.cfg
/etc/nagios/nrpe.d/check_rabbitmq_connections.cfg
/etc/nagios/nrpe.d/check_rabbitmq_objects.cfg
/etc/nagios/nrpe.d/check_rabbitmq_overview.cfg
/etc/nagios/nrpe.d/check_rabbitmq_partition.cfg
/etc/nagios/nrpe.d/check_rabbitmq_queue.cfg
/etc/nagios/nrpe.d/check_rabbitmq_server.cfg
/etc/nagios/nrpe.d/check_rabbitmq_shovels.cfg
/etc/nagios/nrpe.d/check_rabbitmq_watermark.cfg