[mos] Neutron error: unsupported operand type(s) for +: 'NoneType' and 'str'

[Anastasia Palkina]

"build_id": "2014-05-22_01-10-31",
"mirantis": "yes",
"build_number": "216",
"ostf_sha": "5c479f04c35127576d35526650ec83b104f9a33d",
"nailgun_sha": "31fcb161ff8d6bfb861b041467440752c0e9c537",
"production": "docker",
"api": "1.0",
"fuelmain_sha": "dda9cff27999e74b80e8e6a9e665e7e9677ab994",
"astute_sha": "9a0d86918724c1153b5f70bdae008dea8572fd3e",
"release": "5.0",
"fuellib_sha": "872b6a7a968b619a493ad46c504910020ea2edae"

1. Create new environment (CentOS, HA)
2. Choose VLAN segmentation
3. Choose Sahara installation
4. Add 3 controllers, compute and cinder
5. Start deployment. It was successful
6. There is error in neutron-resheduling log on first controller:

2014-05-22 09:56:24 ERROR

- Neutron error:
2014-05-22T09:56:24.654698+00:00 debug: unsupported operand type(s) for +: 'NoneType' and 'str'

[Ilya Shakhat (shakhat)]

Full log contents (file /var/log/remote/node-1.domain.tld/neutron-rescheduling.log):

2014-05-22T09:56:24.654698+00:00 debug: 2014-05-22 09:56:16,915 - INFO - Started: /usr/bin/q-agent-cleanup.py --agent=dhcp --reschedule --remove-dead
2014-05-22T09:56:24.654698+00:00 debug: 2014-05-22 09:56:24,366 - ERROR - Neutron error:
2014-05-22T09:56:24.654698+00:00 debug: unsupported operand type(s) for +: 'NoneType' and 'str'
2014-05-22T09:57:56.674834+00:00 debug: 2014-05-22 09:57:51,261 - INFO - Started: /usr/bin/q-agent-cleanup.py --agent=l3 --reschedule --remove-dead
2014-05-22T09:58:06.686715+00:00 debug: 2014-05-22 09:58:01,377 - INFO - found alive L3 agent: 88ffcef3-3b98-406c-9cf0-4ea9c472ea6e

The error occurs in q-agent-cleanup.py which is not a part of neutron (https://github.com/stackforge/fuel-library/blob/stable/5.0/deployment/puppet/neutron/files/q-agent-cleanup.py).

[Ilya Shakhat (shakhat)]

Unreproducible on official MOS 5.0. The issue may be of transient nature.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/109332

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/4.1
Review: https://review.openstack.org/147019

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/5.0
Review: https://review.openstack.org/147094

[OpenStack Infra (hudson-openstack)]

Change abandoned by Ryan Moe (<email address hidden>) on branch: stable/4.1
Review: https://review.openstack.org/147019

[OpenStack Infra (hudson-openstack)]

Change abandoned by Sergey Kolekonov (<email address hidden>) on branch: stable/5.0
Review: https://review.openstack.org/147094