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nova-api did not start [closed]

asked 2016-01-07 05:51:18 -0500

audiomobster gravatar image

I'm getting following error from one day to another: /home/user/devstack/lib/nova:832:die [ERROR] /home/user/devstack/lib/nova:832 nova-api did not start

I'm not allowed to attach files, so from n-api.log:

stack@haystack:/home/user/devstack$ cat /opt/stack/logs/n-api.log tatus/stack/n-api.failure"fg || echo "n-api failed to start" | tee "/opt/stack/s [1] 12044 /usr/local/bin/nova-api 2016-01-07 11:31:21.840 DEBUG oslo_db.api [-] Loading backend 'sqlalchemy' from 'nova.db.sqlalchemy.api' from (pid=12044) _load_backend /usr/local/lib/python2.7/dist-packages/oslo_db/api.py:238 2016-01-07 11:31:21.874 WARNING oslo_reports.guru_meditation_report [-] Guru mediation now registers SIGUSR1 and SIGUSR2 by default for backward compatibility. SIGUSR1 will no longer be registered in a future release, so please use SIGUSR2 to generate reports. 2016-01-07 11:31:21.874 DEBUG oslo_concurrency.lockutils [-] Acquired semaphore "singleton_lock" from (pid=12044) lock /usr/local/lib/python2.7/dist-packages/oslo_concurrency/lockutils.py:212 2016-01-07 11:31:21.875 DEBUG oslo_concurrency.lockutils [-] Releasing semaphore "singleton_lock" from (pid=12044) lock /usr/local/lib/python2.7/dist-packages/oslo_concurrency/lockutils.py:225 2016-01-07 11:31:21.875 DEBUG nova.wsgi [-] Loading app ec2 from /etc/nova/api-paste.ini from (pid=12044) load_app /opt/stack/nova/nova/wsgi.py:543 2016-01-07 11:31:21.876 ERROR nova.wsgi [-] Couldn't lookup app: ec2 2016-01-07 11:31:21.876 TRACE nova.wsgi Traceback (most recent call last): 2016-01-07 11:31:21.876 TRACE nova.wsgi   File "/opt/stack/nova/nova/wsgi.py", line 544, in load_app 2016-01-07 11:31:21.876 TRACE nova.wsgi     return deploy.loadapp("config:%s" % self.config_path, name=name) 2016-01-07 11:31:21.876 TRACE nova.wsgi   File "/usr/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 247, in loadapp 2016-01-07 11:31:21.876 TRACE nova.wsgi     return loadobj(APP, uri, name=name,
**kw) 2016-01-07 11:31:21.876 TRACE nova.wsgi   File "/usr/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 271, in loadobj 2016-01-07 11:31:21.876 TRACE nova.wsgi     global_conf=global_conf) 2016-01-07 11:31:21.876 TRACE nova.wsgi   File "/usr/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 296, in loadcontext 2016-01-07 11:31:21.876 TRACE nova.wsgi     global_conf=global_conf) 2016-01-07 11:31:21.876 TRACE nova.wsgi   File "/usr/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 320, in _loadconfig 2016-01-07 11:31:21.876 TRACE nova.wsgi     return loader.get_context(object_type, name, global_conf) 2016-01-07 11:31:21.876 TRACE nova.wsgi   File "/usr/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 408, in get_context 2016-01-07 11:31:21.876 TRACE nova.wsgi     object_type, name=name) 2016-01-07 11:31:21.876 TRACE nova.wsgi   File "/usr/lib/python2.7/dist-packages/paste/deploy/loadwsgi.py", line 587, in find_config_section 2016-01-07 11:31:21.876 TRACE nova.wsgi     self.filename)) 2016-01-07 11:31:21.876 TRACE nova.wsgi LookupError: No section 'ec2' (prefixed by 'app' or 'application' or 'composite' or 'composit' or ...
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Closed for the following reason question is not relevant or outdated by audiomobster
close date 2017-06-19 00:59:48.236033

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Thanks for your help folks. I left the company which I did this for a short time later, so I can't verify the answer.

audiomobster gravatar imageaudiomobster ( 2017-06-19 00:59:15 -0500 )edit
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3 answers

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answered 2016-01-11 15:04:43 -0500

bcollins gravatar image

1:31:21.876 TRACE nova.wsgi LookupError: No section 'ec2' (prefixed by 'app' or 'application' or 'composite' or 'composit' or 'pipeline' or 'filter-app') found in config /etc/nova/api-paste.ini 2016-01-07 11:31:21.876 TRACE nova.wsgi 2016-01-07 11:31:21.877 CRITICAL nova [-] PasteAppNotFound: Could not load paste app 'ec2' from /etc/nova/api-paste.ini

looks like you need to correct your api-paste.ini

Here is an example: [root@platform2 ~]# cat /etc/nova/api-paste.ini 

############
# Metadata #
############
[composite:metadata]
use = egg:Paste#urlmap
/: meta

[pipeline:meta]
pipeline = ec2faultwrap logrequest metaapp

[app:metaapp]
paste.app_factory = nova.api.metadata.handler:MetadataRequestHandler.factory

#######
# EC2 #
#######

# NOTE: this is now deprecated in favor of https://github.com/stackforge/ec2-api
[composite:ec2]
use = egg:Paste#urlmap
/: ec2cloud

[composite:ec2cloud]
use = call:nova.api.auth:pipeline_factory
noauth2 = ec2faultwrap logrequest ec2noauth cloudrequest validator ec2executor
keystone = ec2faultwrap logrequest ec2keystoneauth cloudrequest validator ec2executor

[filter:ec2faultwrap]
paste.filter_factory = nova.api.ec2:FaultWrapper.factory

[filter:logrequest]
paste.filter_factory = nova.api.ec2:RequestLogging.factory

[filter:ec2lockout]
paste.filter_factory = nova.api.ec2:Lockout.factory

[filter:ec2keystoneauth]                                                                                                                                     
paste.filter_factory = nova.api.ec2:EC2KeystoneAuth.factory

[filter:ec2noauth]
paste.filter_factory = nova.api.ec2:NoAuth.factory

[filter:cloudrequest]
controller = nova.api.ec2.cloud.CloudController
paste.filter_factory = nova.api.ec2:Requestify.factory

[filter:authorizer]
paste.filter_factory = nova.api.ec2:Authorizer.factory

[filter:validator]
paste.filter_factory = nova.api.ec2:Validator.factory

[app:ec2executor]
paste.app_factory = nova.api.ec2:Executor.factory

#############
# OpenStack #
#############

[composite:osapi_compute]
use = call:nova.api.openstack.urlmap:urlmap_factory
/: oscomputeversions
# starting in Liberty the v21 implementation replaces the v2
# implementation and is suggested that you use it as the default. If
# this causes issues with your clients you can rollback to the
# *frozen* v2 api by commenting out the above stanza and using the
# following instead::
# /v1.1: openstack_compute_api_legacy_v2
# /v2: openstack_compute_api_legacy_v2
# if rolling back to v2 fixes your issue please file a critical bug
# at - https://bugs.launchpad.net/nova/+bugs
#
# v21 is an exactly feature match for v2, except it has more stringent
# input validation on the wsgi surface (prevents fuzzing early on the
# API). It also provides new features via API microversions which are
# opt into for clients. Unaware clients will receive the same frozen
# v2 API feature set, but with some relaxed validation
/v1.1: openstack_compute_api_v21_legacy_v2_compatible
/v2: openstack_compute_api_v21_legacy_v2_compatible
/v2.1: openstack_compute_api_v21

# NOTE: this is deprecated in favor of openstack_compute_api_v21_legacy_v2_compatible
[composite:openstack_compute_api_legacy_v2]
use = call:nova.api.auth:pipeline_factory
noauth2 = compute_req_id faultwrap sizelimit noauth2 legacy_ratelimit osapi_compute_app_legacy_v2
keystone = compute_req_id faultwrap sizelimit authtoken keystonecontext legacy_ratelimit osapi_compute_app_legacy_v2
keystone_nolimit = compute_req_id faultwrap sizelimit authtoken keystonecontext osapi_compute_app_legacy_v2

[composite:openstack_compute_api_v21]
use = call:nova.api.auth:pipeline_factory_v21
noauth2 = compute_req_id faultwrap sizelimit noauth2 osapi_compute_app_v21
keystone = compute_req_id faultwrap sizelimit authtoken keystonecontext osapi_compute_app_v21

[composite:openstack_compute_api_v21_legacy_v2_compatible]
use = call:nova.api.auth:pipeline_factory_v21
noauth2 = compute_req_id faultwrap sizelimit noauth2 legacy_v2_compatible osapi_compute_app_v21
keystone = compute_req_id faultwrap sizelimit authtoken keystonecontext legacy_v2_compatible osapi_compute_app_v21

[filter:request_id]
paste.filter_factory = oslo_middleware:RequestId.factory

[filter:compute_req_id]
paste.filter_factory = nova.api.compute_req_id:ComputeReqIdMiddleware.factory

[filter:faultwrap]
paste.filter_factory = nova.api.openstack:FaultWrapper.factory

[filter:noauth2]
paste.filter_factory = nova.api.openstack.auth:NoAuthMiddleware.factory

[filter:legacy_ratelimit]
paste.filter_factory = nova.api ...
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answered 2016-01-11 14:33:51 -0500

Sandeep gravatar image

updated 2016-01-11 14:34:17 -0500

restart complete service: systemctl restart openstack-nova-consoleauth.service systemctl restart openstack-nova-cert.service systemctl restart openstack-nova-compute.service systemctl restart openstack-nova-conductor.service systemctl restart openstack-nova-consoleauth.service

if using devstack: /usr/local/bin->nova all

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or you could just use openstack-service restart

bcollins gravatar imagebcollins ( 2016-01-11 14:57:10 -0500 )edit
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answered 2016-01-13 02:45:06 -0500

audiomobster gravatar image

updated 2016-01-13 02:47:54 -0500

Was solved after a git pull and unstack.sh & stack.sh.

Thanks anyway folks!

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Asked: 2016-01-07 05:51:18 -0500

Seen: 2,820 times

Last updated: Jan 13 '16

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