** Changed in: cloud-archive/stein
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1808951
Title:
python3 + Fedora + SSL + wsgi nova deployment, nova api returns
RecursionError: maximum recursion depth exceeded while calling a
Python object
Status in Ubuntu Cloud Archive:
Fix Released
Status in Ubuntu Cloud Archive stein series:
Fix Released
Status in OpenStack Compute (nova):
Fix Released
Status in tripleo:
Triaged
Status in nova package in Ubuntu:
Fix Released
Status in nova source package in Disco:
Fix Released
Status in nova source package in Eoan:
Fix Released
Bug description:
Description:-
So while testing python3 with Fedora in [1], Found an issue while
running nova-api behind wsgi. It fails with below Traceback:-
2018-12-18 07:41:55.364 26870 INFO nova.api.openstack.requestlog
[req-e1af4808-ecd8-47c7-9568-a5dd9691c2c9 - - - - -] 127.0.0.1 "GET
/v2.1/servers/detail?all_tenants=True&deleted=True" status: 500 len: 0
microversion: - time: 0.007297
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack
[req-e1af4808-ecd8-47c7-9568-a5dd9691c2c9 - - - - -] Caught error: maximum
recursion depth exceeded while calling a Python object: RecursionError: maximum
recursion depth exceeded while calling a Python object
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack Traceback (most recent
call last):
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/nova/api/openstack/__init__.py", line 94, in
__call__
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack return
req.get_response(self.application)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/webob/request.py", line 1313, in send
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack application,
catch_exc_info=False)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/webob/request.py", line 1277, in
call_application
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack app_iter =
application(self.environ, start_response)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/webob/dec.py", line 129, in __call__
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack resp =
self.call_func(req, *args, **kw)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/webob/dec.py", line 193, in call_func
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack return
self.func(req, *args, **kwargs)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/nova/api/openstack/requestlog.py", line 92,
in __call__
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack self._log_req(req,
res, start)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/oslo_utils/excutils.py", line 220, in __exit__
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack
self.force_reraise()
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/oslo_utils/excutils.py", line 196, in
force_reraise
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack
six.reraise(self.type_, self.value, self.tb)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/six.py", line 693, in reraise
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack raise value
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/nova/api/openstack/requestlog.py", line 87,
in __call__
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack res =
req.get_response(self.application)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/webob/request.py", line 1313, in send
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack application,
catch_exc_info=False)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/webob/request.py", line 1277, in
call_application
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack app_iter =
application(self.environ, start_response)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/webob/dec.py", line 143, in __call__
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack return
resp(environ, start_response)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/webob/dec.py", line 129, in __call__
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack resp =
self.call_func(req, *args, **kw)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/webob/dec.py", line 193, in call_func
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack return
self.func(req, *args, **kwargs)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/osprofiler/web.py", line 112, in __call__
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack return
request.get_response(self.application)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/webob/request.py", line 1313, in send
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack application,
catch_exc_info=False)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/webob/request.py", line 1277, in
call_application
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack app_iter =
application(self.environ, start_response)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/webob/dec.py", line 129, in __call__
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack resp =
self.call_func(req, *args, **kw)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/webob/dec.py", line 193, in call_func
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack return
self.func(req, *args, **kwargs)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/keystonemiddleware/auth_token/__init__.py",
line 332, in __call__
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack response =
self.process_request(req)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/keystonemiddleware/auth_token/__init__.py",
line 622, in process_request
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack resp =
super(AuthProtocol, self).process_request(request)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/keystonemiddleware/auth_token/__init__.py",
line 405, in process_request
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack
allow_expired=allow_expired)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/keystonemiddleware/auth_token/__init__.py",
line 437, in _do_fetch_token
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack data =
self.fetch_token(token, **kwargs)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/keystonemiddleware/auth_token/__init__.py",
line 761, in fetch_token
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack
allow_expired=allow_expired)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/keystonemiddleware/auth_token/_identity.py",
line 219, in verify_token
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack auth_ref =
self._request_strategy.verify_token(
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/keystonemiddleware/auth_token/_identity.py",
line 170, in _request_strategy
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack strategy_class =
self._get_strategy_class()
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/keystonemiddleware/auth_token/_identity.py",
line 192, in _get_strategy_class
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack if
self._adapter.get_endpoint(version=klass.AUTH_VERSION):
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/keystoneauth1/adapter.py", line 247, in
get_endpoint
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack return
self.session.get_endpoint(auth or self.auth, **kwargs)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/keystoneauth1/session.py", line 1113, in
get_endpoint
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack return
auth.get_endpoint(self, **kwargs)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/keystoneauth1/identity/base.py", line 380, in
get_endpoint
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack
allow_version_hack=allow_version_hack, **kwargs)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/keystoneauth1/identity/base.py", line 271, in
get_endpoint_data
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack service_catalog =
self.get_access(session).service_catalog
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/keystoneauth1/identity/base.py", line 134, in
get_access
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack self.auth_ref =
self.get_auth_ref(session)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/keystoneauth1/identity/generic/base.py", line
206, in get_auth_ref
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack self._plugin =
self._do_create_plugin(session)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/keystoneauth1/identity/generic/base.py", line
138, in _do_create_plugin
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack
authenticated=False)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/keystoneauth1/identity/base.py", line 610, in
get_discovery
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack
authenticated=authenticated)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/keystoneauth1/discover.py", line 1442, in
get_discovery
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack disc =
Discover(session, url, authenticated=authenticated)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/keystoneauth1/discover.py", line 526, in
__init__
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack
authenticated=authenticated)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/keystoneauth1/discover.py", line 101, in
get_version_data
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack resp =
session.get(url, headers=headers, authenticated=authenticated)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/keystoneauth1/session.py", line 1011, in get
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack return
self.request(url, 'GET', **kwargs)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/keystoneauth1/session.py", line 814, in
request
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack resp =
send(**kwargs)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/keystoneauth1/session.py", line 903, in
_send_request
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack resp =
self.session.request(method, url, **kwargs)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/requests/sessions.py", line 524, in request
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack resp =
self.send(prep, **send_kwargs)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/requests/sessions.py", line 637, in send
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack r =
adapter.send(request, **kwargs)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/requests/adapters.py", line 449, in send
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack timeout=timeout
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/urllib3/connectionpool.py", line 600, in
urlopen
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack chunked=chunked)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/urllib3/connectionpool.py", line 343, in
_make_request
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack
self._validate_conn(conn)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/urllib3/connectionpool.py", line 839, in
_validate_conn
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack conn.connect()
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/urllib3/connection.py", line 332, in connect
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack
cert_reqs=resolve_cert_reqs(self.cert_reqs),
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib/python3.6/site-packages/urllib3/util/ssl_.py", line 281, in
create_urllib3_context
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack context.options |=
options
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib64/python3.6/ssl.py", line 423, in options
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack super(SSLContext,
SSLContext).options.__set__(self, value)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib64/python3.6/ssl.py", line 423, in options
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack super(SSLContext,
SSLContext).options.__set__(self, value)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack File
"/usr/lib64/python3.6/ssl.py", line 423, in options
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack super(SSLContext,
SSLContext).options.__set__(self, value)
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack [Previous line
repeated 280 more times]
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack RecursionError:
maximum recursion depth exceeded while calling a Python object
2018-12-18 07:41:55.364 26870 ERROR nova.api.openstack
2018-12-18 07:41:55.371 26870 INFO nova.api.openstack
[req-e1af4808-ecd8-47c7-9568-a5dd9691c2c9 - - - - -]
https://127.0.0.1:8774/v2.1/servers/detail?all_tenants=True&deleted=True
returned with HTTP 500
Environment Details:-
OS: Fedora 28
python: 3.6.7
eventlet: 0.24.1
The issue is around using of eventlet.monkey_patch even if running
under wsgi[2]. Eventlet Best practices suggest to not run(skip)
monkey_patch when running behind wsgi[3] but with nova it's not the
case.
Expected result
===============
Nova api should response successfully.
Actual result
=============
Nova api returns Recursion Error.
[1] https://review.openstack.org/#/c/620561/
[2]
https://github.com/openstack/nova/blob/a674241d0f026b546b38ec77ab472e916805c679/nova/api/openstack/wsgi_app.py#L32
[3]
https://review.openstack.org/#/c/154642/2/specs/eventlet-best-practices.rst@54
-------------------------------------------------------------
Ubuntu SRU Details
[Impact]
Please see description above.
[Test Case]
* Deploy OpenStack Stein with tls endpoints
* Attempt to interact with nova api (list flavors for example)
https://paste.ubuntu.com/p/yFPsMqRVRx/
[Regression Potential]
There is certainly regression potential with this patch as it is not a
trivial change. The patch has landed in the upstream master branch which is now
train, which means it has received iterative reviews and final approval from
upstream reviewers and passed gate testing. The patch has not yet landed in the
upstream stable/stein but does have one core reviewer's +2 and has passed zuul
tests with a +1. The patch has been tested locally and confirmed to fix
nova+wsgi+py3+SSL in initial Ubuntu testing. Without this change that
combination is broken for Ubuntu Stein.
To manage notifications about this bug go to:
https://bugs.launchpad.net/cloud-archive/+bug/1808951/+subscriptions
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