Seems mod-gearman module does not even connect to gearmand.
[2017-08-12 11:14:46][23447][DEBUG] --------------------------------
[2017-08-12 11:14:46][23447][DEBUG] configuration:
[2017-08-12 11:14:46][23447][DEBUG] log level: 4
[2017-08-12 11:14:46][23447][DEBUG] log mode: file (1)
[2017-08-12 11:14:46][23447][DEBUG] queue by cust var: no
[2017-08-12 11:14:46][23447][DEBUG] debug result: no
[2017-08-12 11:14:46][23447][DEBUG] result_worker: 0
[2017-08-12 11:14:46][23447][DEBUG] do_hostchecks: no
[2017-08-12 11:14:46][23447][DEBUG] route_eventhandler_like_checks: no
[2017-08-12 11:14:46][23447][DEBUG] result_queue:
[2017-08-12 11:14:46][23447][DEBUG]
[2017-08-12 11:14:46][23447][DEBUG]
[2017-08-12 11:14:46][23447][DEBUG]
[2017-08-12 11:14:46][23447][DEBUG] perfdata: yes
[2017-08-12 11:14:46][23447][DEBUG] perfdata mode: overwrite
[2017-08-12 11:14:46][23447][DEBUG] hosts: no
[2017-08-12 11:14:46][23447][DEBUG] services: no
[2017-08-12 11:14:46][23447][DEBUG] eventhandler: no
[2017-08-12 11:14:46][23447][DEBUG]
[2017-08-12 11:14:46][23447][DEBUG] encryption: yes
[2017-08-12 11:14:46][23447][DEBUG] keyfile: no
[2017-08-12 11:14:46][23447][DEBUG] encryption key: set
[2017-08-12 11:14:46][23447][DEBUG] accept clear result: no
[2017-08-12 11:14:46][23447][DEBUG] transport mode: aes-256+base64
[2017-08-12 11:14:46][23447][DEBUG] use uniq jobs: no
[2017-08-12 11:14:46][23447][DEBUG] --------------------------------
[2017-08-12 11:14:46][23447][TRACE] create_client()
[2017-08-12 11:14:46][23447][DEBUG] finished initializing