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[Rodolfo Alonso <1921154@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Since [1], the process signals are sent using os.kill() method.

It is happening that, in some cases, the method never returns and raises
a timeout.

Because os.kill() is a blocking method, we should find a way to monitor
this process and end it properly.

Error logs:
- https://bec7cc51aed17868a822-df0c8eba46b67aa6178498e0cf2208c0.ssl.cf1.rackcdn.com/779310/6/check/neutron-functional-with-uwsgi/e6d8aae/testr_results.html
- https://b19b5ab35f9ced465dd5-2eb50734132c0e56282483bcdf57bf8a.ssl.cf5.rackcdn.com/782587/5/check/neutron-functional-with-uwsgi/8a6a6d3/testr_results.html
- https://52682a1fca01b92ead5c-4c2761265b996c18f02000b5e0f64005.ssl.cf5.rackcdn.com/782275/1/check/neutron-functional-with-uwsgi/b890243/testr_results.html

Snippet: http://paste.openstack.org/show/803873/

[1]https://review.opendev.org/c/openstack/neutron/+/681671

** Affects: neutron
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1921154

Title:
  os.kill(SIGTERM) does not finish and timeouts

Status in neutron:
  New

Bug description:
  Since [1], the process signals are sent using os.kill() method.

  It is happening that, in some cases, the method never returns and
  raises a timeout.

  Because os.kill() is a blocking method, we should find a way to
  monitor this process and end it properly.

  Error logs:
  - https://bec7cc51aed17868a822-df0c8eba46b67aa6178498e0cf2208c0.ssl.cf1.rackcdn.com/779310/6/check/neutron-functional-with-uwsgi/e6d8aae/testr_results.html
  - https://b19b5ab35f9ced465dd5-2eb50734132c0e56282483bcdf57bf8a.ssl.cf5.rackcdn.com/782587/5/check/neutron-functional-with-uwsgi/8a6a6d3/testr_results.html
  - https://52682a1fca01b92ead5c-4c2761265b996c18f02000b5e0f64005.ssl.cf5.rackcdn.com/782275/1/check/neutron-functional-with-uwsgi/b890243/testr_results.html

  Snippet: http://paste.openstack.org/show/803873/

  [1]https://review.opendev.org/c/openstack/neutron/+/681671

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