Some services such as nova introduced GMR for API wsgi application
so that GMR can be generated via a file handler. However the current
setup method tries to register signal handler and causes warnings.
For example we are seeing the following error when starting nova-api
by apache + mod_wsgi.
mod_wsgi (pid=80323): Callback registration for signal 12 ignored.
File "/var/www/cgi-bin/nova/nova-api", line 52, in <module>
application = init_application()
File "/usr/lib/python3.9/site-packages/nova/api/openstack/compute/wsgi.py", line 20, in init_application
return wsgi_app.init_application(NAME)
File "/usr/lib/python3.9/site-packages/nova/api/openstack/wsgi_app.py", line 128, in init_application
init_global_data(conf_files, name)
File "/usr/lib/python3.9/site-packages/nova/utils.py", line 1122, in wrapper
return func(*args, **kwargs)
File "/usr/lib/python3.9/site-packages/nova/api/openstack/wsgi_app.py", line 105, in init_global_data
gmr.TextGuruMeditation.setup_autorun(
File "/usr/lib/python3.9/site-packages/oslo_reports/guru_meditation_report.py", line 152, in setup_autorun
cls._setup_signal(signal.SIGUSR2,
File "/usr/lib/python3.9/site-packages/oslo_reports/guru_meditation_report.py", line 185, in _setup_signal
signal.signal(signum,
This introduces the new argument so that we can disable signal handler
completely to avoid such warnings.
Change-Id: I95170542fecb493260a22d9148f3a2777207cb0e
db11260c11