To enable debug logs for troubleshooting in OpsMan and/or Bosh director there are different methods.
Operations Manager/ Bosh Director
Bosh director:
To enable debug logging for Apply Changes in Bosh director, got to Director Tile -> Director Config page --> Bosh Log level change from Default to Debug, save the page and run Apply Changes. The debug logs will be shown in Apply Changes logs.
Operations Manager:
To enable debug logs for Operatiosn Manager in production.log run below steps:
vi /home/tempest-web/tempest/web/config/environments/production.rb
Change config.log_level from info to debug
config.log_level = :debug
Restart tempest-web
service tempest-web restart
Login to OPS Manager and run Apply change. Note: Decryption passphrase is required to login.