The playbook apigee-opdk-debug-mode.yml will set the debug flag on all of the Edge component scripts.
To set debug mode you invoke the playbook like this:
ansible-playbook apigee-opdk-debug-mode.yml -e opdk_debug_mode='on'
To unset debug mode you invoke the playbook like this:
ansible-playbook apigee-opdk-debug-mode.yml -e opdk_debug_mode='off'
To set debug mode on the scripts for an Edge component then use the -e component_name variable like this:
ansible-playbook apigee-opdk-debug-mode.yml -e opdk_debug_mode='on' -e component_name='message-processor'
This playbook assumes that you followed the instructions for setting up Ansible.
Please refer to the documentation for apigee-opdk-debug-mode.