ansible/plugins/callback/

ansible.cfg

[defaults]
 
# change the default callback, you can only have one 'stdout' type  enabled at a time.
#stdout_callback = skippy
stdout_callback = kafka_logger
 
# Callback pluging activated for /usr/bin/ansible too
bin_ansible_callbacks = true
 
# enable callback plugins, they can output to stdout but cannot be 'stdout' type.
#callback_whitelist = timer, mail
callback_whitelist = timer, mail
 
# callback plugin path
# cp -p /usr/lib/python3.6/site-packages/ansible/plugins/callback/timer.py ansible/plugins/callback/
callback_plugins   = $PWD/ansible/plugins/callback

ansible-doc -t callback -l