kubernetes headless service cause AddrFormatError

[changhongli]

when create headless service in kubernetes , cause kuryr-k8s-controller AddrFormatError
===service.yml======
apiVersion: v1
kind: Service
metadata:
  name: nginx-web
  labels:
    name: zabbix-web
spec:
  ports:
  - port: 80
    targetPort: 80
    protocol: TCP
  clusterIP: None
  selector:
    app: nginx1
===================
error log
=====================
2017-11-16 13:43:21.761 19690 DEBUG kuryr_kubernetes.handlers.dispatch [-] 1 handler(s) available __call__ /opt/kuryr/local/lib/python2.7/site-packages/kuryr_kubernetes/handlers/dispatch.py:62
2017-11-16 13:43:21.787 19690 DEBUG kuryr_kubernetes.controller.handlers.lbaas [-] === [('be7d3194-e7fb-4b55-a86b-489437ffd87e', Network(bridge=<?>,bridge_interface=<?>,id=d7064691-7695-4c26-b9be-b001dafbc77f,label='private',mtu=1450,multi_host=False,should_provide_bridge=False,should_provide_vlan=False,subnets=SubnetList,vlan=<?>))] _get_subnet_id /opt/kuryr/local/lib/python2.7/site-packages/kuryr_kubernetes/controller/handlers/lbaas.py:79
2017-11-16 13:43:21.788 19690 ERROR kuryr_kubernetes.handlers.logging [-] Failed to handle event {u'object': {u'status': {u'loadBalancer': {}}, u'kind': u'Service', u'spec': {u'clusterIP': u'None', u'sessionAffinity': u'None', u'type': u'ClusterIP', u'ports': [{u'targetPort': 80, u'protocol': u'TCP', u'port': 80}], u'selector': {u'app': u'nginx1'}}, u'apiVersion': u'v1', u'metadata': {u'name': u'nginx-web', u'labels': {u'name': u'zabbix-web'}, u'namespace': u'default', u'resourceVersion': u'115460', u'creationTimestamp': u'2017-11-16T03:53:27Z', u'selfLink': u'/api/v1/namespaces/default/services/nginx-web', u'uid': u'b42431f4-ca81-11e7-b4eb-fa163e11656c'}}, u'type': u'ADDED'}: AddrFormatError: failed to detect a valid IP address from u'None'
2017-11-16 13:43:21.788 19690 ERROR kuryr_kubernetes.handlers.logging Traceback (most recent call last):
2017-11-16 13:43:21.788 19690 ERROR kuryr_kubernetes.handlers.logging File "/opt/kuryr/local/lib/python2.7/site-packages/kuryr_kubernetes/handlers/logging.py", line 37, in __call__
2017-11-16 13:43:21.788 19690 ERROR kuryr_kubernetes.handlers.logging self._handler(event)
2017-11-16 13:43:21.788 19690 ERROR kuryr_kubernetes.handlers.logging File "/opt/kuryr/local/lib/python2.7/site-packages/kuryr_kubernetes/handlers/retry.py", line 61, in __call__
2017-11-16 13:43:21.788 19690 ERROR kuryr_kubernetes.handlers.logging self._handler(event)
2017-11-16 13:43:21.788 19690 ERROR kuryr_kubernetes.handlers.logging File "/opt/kuryr/local/lib/python2.7/site-packages/kuryr_kubernetes/handlers/k8s_base.py", line 63, in __call__
2017-11-16 13:43:21.788 19690 ERROR kuryr_kubernetes.handlers.logging self.on_present(obj)
2017-11-16 13:43:21.788 19690 ERROR kuryr_kubernetes.handlers.logging File "/opt/kuryr/local/lib/python2.7/site-packages/kuryr_kubernetes/controller/handlers/lbaas.py", line 56, in on_present
2017-11-16 13:43:21.788 19690 ERROR kuryr_kubernetes.handlers.logging lbaas_spec = self._generate_lbaas_spec(service)
2017-11-16 13:43:21.788 19690 ERROR kuryr_kubernetes.handlers.logging File "/opt/kuryr/local/lib/python2.7/site-packages/kuryr_kubernetes/controller/handlers/lbaas.py", line 98, in _generate_lbaas_spec
2017-11-16 13:43:21.788 19690 ERROR kuryr_kubernetes.handlers.logging subnet_id = self._get_subnet_id(service, project_id, ip)
2017-11-16 13:43:21.788 19690 ERROR kuryr_kubernetes.handlers.logging File "/opt/kuryr/local/lib/python2.7/site-packages/kuryr_kubernetes/controller/handlers/lbaas.py", line 82, in _get_subnet_id
2017-11-16 13:43:21.788 19690 ERROR kuryr_kubernetes.handlers.logging for subnet_id, network in subnets_mapping.items()
2017-11-16 13:43:21.788 19690 ERROR kuryr_kubernetes.handlers.logging File "/opt/kuryr/local/lib/python2.7/site-packages/kuryr_kubernetes/controller/handlers/lbaas.py", line 84, in <setcomp>
2017-11-16 13:43:21.788 19690 ERROR kuryr_kubernetes.handlers.logging if ip in subnet.cidr}
2017-11-16 13:43:21.788 19690 ERROR kuryr_kubernetes.handlers.logging File "/opt/kuryr/local/lib/python2.7/site-packages/netaddr/ip/__init__.py", line 1123, in __contains__
2017-11-16 13:43:21.788 19690 ERROR kuryr_kubernetes.handlers.logging return IPAddress(other) in self
2017-11-16 13:43:21.788 19690 ERROR kuryr_kubernetes.handlers.logging File "/opt/kuryr/local/lib/python2.7/site-packages/netaddr/ip/__init__.py", line 306, in __init__
2017-11-16 13:43:21.788 19690 ERROR kuryr_kubernetes.handlers.logging 'address from %r' % addr)
2017-11-16 13:43:21.788 19690 ERROR kuryr_kubernetes.handlers.logging AddrFormatError: failed to detect a valid IP address from u'None'
2017-11-16 13:43:21.788 19690 ERROR kuryr_kubernetes.handlers.logging

[Irena Berezovsky (irenab)]

Currently headless services are not supported by kuryr.
Based on the details at Kubernetes documentation https://kubernetes.io/docs/concepts/services-networking/service/#headless-services, such service should not be load balanced by the platform .

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/520309
Committed: https://git.openstack.org/cgit/openstack/kuryr-kubernetes/commit/?id=00c5f004858a37de99b9ac171be260f6773995cc
Submitter: Zuul
Branch: master

commit 00c5f004858a37de99b9ac171be260f6773995cc
Author: changhongli <[e-mail]>
Date: Thu Nov 16 14:31:56 2017 +0800

    Ignore the headless services

    Headless services should not be load-balanced by the platform. This
    commit makes sure such services are ignored by Kuryr.

    Closes-Bug: #1732597
    Change-Id: I39736791f0b3b3fba24f6bdc93a2950751e50147

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/kuryr-kubernetes 0.3.0 release.