Unexpected API Error. <class 'nova.exception.NeutronAdminCredentialConfigurat

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Unexpected API Error. <class 'nova.exception.NeutronAdminCredentialConfigurationInvalid'> (HTTP 500) 解决办法
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http://controller:8774 "POST /v2.1/servers HTTP/1.1" 500 None
" f& h4 D) g/ S* W; i( u5 BRESP: [500] Content-Type: application/json; charset=UTF-8 openstack-API-Version: compute 2.1 Vary: openstack-API-Version, X-OpenStack-Nova-API-Version X-OpenStack-Nova-API-Version: 2.1 x-compute-request-id: req-af926773-9a0d-4738-b788-16283f94be0d x-openstack-request-id: req-af926773-9a0d-4738-b788-16283f94be0d
$ ]; b( F/ v; }+ CRESP BODY: {"computeFault": {"code": 500, "message": "Unexpected API Error. Please report this at http://bugs.launchpad.net/nova/ and attach the Nova API log if possible.\n<class 'nova.exception.NeutronAdminCredentialConfigurationInvalid'>"}}
0 n# U6 ?8 w& ?  }' v7 ZPOST call to compute for http://controller:8774/v2.1/servers used request id req-af926773-9a0d-4738-b788-16283f94be0d
Unexpected API Error. Please report this at http://bugs.launchpad.net/nova/ and attach the Nova API log if possible.
! G% n) P% S( ^) R* [<class 'nova.exception.NeutronAdminCredentialConfigurationInvalid'> (HTTP 500) (Request-ID: req-af926773-9a0d-4738-b788-16283f94be0d)
1 x$ l; J$ ]0 Y, ATraceback (most recent call last):
  File "/usr/lib/python3/dist-packages/cliff/app.py", line 410, in run_subcommand
( G. u* `1 \5 }    result = cmd.run(parsed_args)
, ]0 w4 }( L6 y$ i7 y, u/ y. x0 z             ^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/osc_lib/command/command.py", line 39, in run
    return super(Command, self).run(parsed_args)
( d" L2 \8 B, Q, W/ f           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/cliff/display.py", line 115, in run
" F  i, G- B7 O2 Q6 `$ \    column_names, data = self.take_action(parsed_args)
                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/openstackclient/compute/v2/server.py", line 1729, in take_action
    server = compute_client.servers.create(*boot_args, **boot_kwargs)
! E3 K) L+ }- g+ Z             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/novaclient/v2/servers.py", line 1562, in create
    return self._boot(response_key, *boot_args, **boot_kwargs)
+ h) b* C2 U( R, `& H6 V1 v9 e# G; i  e           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/novaclient/v2/servers.py", line 887, in _boot
    return self._create('/servers', body, response_key,
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
* Y, A& f& D  \; o( s0 w  File "/usr/lib/python3/dist-packages/novaclient/base.py", line 363, in _create
    resp, body = self.api.client.post(url, body=body)
4 v; B: J* I. _! w) l1 }                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/lib/python3/dist-packages/keystoneauth1/adapter.py", line 401, in post
    return self.request(url, 'POST', **kwargs)
0 J3 E0 N- g* z$ y# s3 V5 k% Q           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
$ Y1 N4 m1 K9 W( O  File "/usr/lib/python3/dist-packages/novaclient/client.py", line 78, in request
    raise exceptions.from_response(resp, body, url, method)
% r# d3 @; b, \2 @; w6 Enovaclient.exceptions.ClientException: Unexpected API Error. Please report this at http://bugs.launchpad.net/nova/ and attach the Nova API log if possible.
<class 'nova.exception.NeutronAdminCredentialConfigurationInvalid'> (HTTP 500) (Request-ID: req-af926773-9a0d-4738-b788-16283f94be0d)
/ f# U! W( s* z7 n, R, c2 S4 bclean_up CreateServer: Unexpected API Error. Please report this at http://bugs.launchpad.net/nova/ and attach the Nova API log if possible.
<class 'nova.exception.NeutronAdminCredentialConfigurationInvalid'> (HTTP 500) (Request-ID: req-af926773-9a0d-4738-b788-16283f94be0d)
END return value: 1

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解决办法：
3 K# a) Z* `8 a; Y修改nova.conf和neutron.conf 文件中 keystone_authtoken项 service_token_roles_required = false  ，   如果是true 一定要改成false。
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