Run zun tempest case in devstack with two neutron networks(public, private),
Create container will fail as the network with cidr options:
(Pdb) ipam_options
{'Config': [{'Subnet': u'10.0.0.0/28', 'Gateway': u'10.0.0.1'}], 'Driver': 'kuryr', 'Options': {'neutron.pool.uuid': None}}
has already exist.
[root@localhost zun]# docker network inspect 88e56a595a40
[
{
"Name": "1a9c8be9-897a-4415-8f25-96699a89842b-0fc39ebf282c434390199b6225697792",
"Id": "88e56a595a4086a74b28e157d8e0b04212b9dd294c6f258f0b0dcc12337f51b8",
"Created": "2017-05-11T15:48:48.445660824+08:00",
"Scope": "local",
"Driver": "kuryr",
"EnableIPv6": false,
"IPAM": {
"Driver": "kuryr",
"Options": {
"neutron.pool.uuid": ""
},
"Config": [
{
"Subnet": "10.0.0.0/28",
"Gateway": "10.0.0.1"
}
]
},
"Internal": false,
"Attachable": false,
"Containers": {},
"Options": {
"neutron.net.uuid": "1a9c8be9-897a-4415-8f25-96699a89842b",
"neutron.pool.uuid": ""
},
"Labels": {}
}
]
The docker driver do not allow two networks with same cidr. But zun create network or not is based on whether the neutro-net-id+project id network is exist. This may lead to docker-py to create network fail with same cidr.
Following error will show in docker/driver.py:
tp://192.168.2.205:9696/v2.0/subnets.json?network_id=f56dd6f5-b726-402b-9999-09f4ebdc86df used request id req-7d2f55ab-3fdf-44e6-aae0-d8ffaed86a25 from (pid=40095) _append_request_id /usr/lib/python2.7/site-packages/neutronclient/v2_0/client.py:128
APIError: APIError...eate',),)
> /opt/stack/zun/zun/container/docker/driver.py(485)create_sandbox()
-> context, network_api, neutron_net['id'])
(Pdb) c
2017-05-12 10:43:39.549 ERROR zun.compute.manager [req-14f50260-b111-4e86-b8f0-834c2bd72fc3 tempest-TestContainer-1730353316 tempest-TestContainer-1730353316] Unexpected exception: Docker internal error: 500 Server Error: Internal Server Error ("IpamDriver.RequestPool: Another pool with same cidr exist. ipam and network options not used to pass pool name").
2017-05-12 10:43:39.549 TRACE zun.compute.manager Traceback (most recent call last):
2017-05-12 10:43:39.549 TRACE zun.compute.manager File "/opt/stack/zun/zun/compute/manager.py", line 84, in _do_container_create
2017-05-12 10:43:39.549 TRACE zun.compute.manager image=sandbox_image)
2017-05-12 10:43:39.549 TRACE zun.compute.manager File "/opt/stack/zun/zun/container/docker/driver.py", line 485, in create_sandbox
2017-05-12 10:43:39.549 TRACE zun.compute.manager context, network_api, neutron_net['id'])
2017-05-12 10:43:39.549 TRACE zun.compute.manager File "/usr/lib64/python2.7/contextlib.py", line 35, in __exit__
2017-05-12 10:43:39.549 TRACE zun.compute.manager self.gen.throw(type, value, traceback)
2017-05-12 10:43:39.549 TRACE zun.compute.manager File "/opt/stack/zun/zun/container/docker/utils.py", line 41, in docker_client
2017-05-12 10:43:39.549 TRACE zun.compute.manager raise exception.DockerError(error_msg=six.text_type(e))
2017-05-12 10:43:39.549 TRACE zun.compute.manager DockerError: Docker internal error: 500 Server Error: Internal Server Error ("IpamDriver.RequestPool: Another pool with same cidr exist. ipam and network options not used to pass pool name").
2017-05-12 10:43:39.549 TRACE zun.compute.manager
2017-05-12 10:43:39.556 DEBUG oslo_messaging._drivers.amqpdriver [req-8d4e9f98-c3e9-46c2-af51-fdd406479f7d tempest-TestContainer-1730353316 tempest-TestContainer-1730353316] received message msg_id: bf617f68d1f145069f90b9343f37fd7c reply to reply_add568ae945e4104bd4f7189cc1139a8 from (pid=40095) __call__ /usr/lib/python2.7/site-packages/oslo_messaging/_drivers/amqpdriver.py:213
The error is raised from Kuryr: https:/