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[Bug 1340641] Re: nova-api crashes when using ipv6-address for metadata API

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: "Markus Zoeller \(markus_z\)" <mzoeller@xxxxxxxxxx>
Date: Tue, 17 May 2016 16:30:28 -0000
Reply-to: Bug 1340641 <1340641@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
This bug report is pretty old. If you can reproduce it on a currently
supported release [1], please reopen this report and add the steps to
reproduce.

References:
http://releases.openstack.org/

** Changed in: nova
     Assignee: Nadja Deininger (nadja) => (unassigned)

** Changed in: nova
       Status: Confirmed => Opinion

** Changed in: nova
   Importance: Wishlist => Low

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https://bugs.launchpad.net/bugs/1340641

Title:
  nova-api crashes when using ipv6-address for metadata API

Status in OpenStack Compute (nova):
  Opinion

Bug description:
  I'm doing openstack icehouse controller installation inside virtualbox
  with ipv6 configurations when I'm installing nova.

  When I use ipv6 address for the metadata API (metadata_listen =
  2001:db8:0::1, metadata_host = 2001:db8:0::1), nova-api crashes soon
  after launching and with ipv4 everything seems to be running like
  charm(metadata_listen = 198.168.0.1, metadata_host = 198.168.0.1).

  e.g. when i restart my nova processes and run 'nova list' command
  twice as root following things occurs:

  # nova list
  +----+------+--------+------------+-------------+----------+
  | ID | Name | Status | Task State | Power State | Networks |
  +----+------+--------+------------+-------------+----------+
  +----+------+--------+------------+-------------+----------+

  # nova list
  ERROR: HTTPConnectionPool(host='ctrl', port=8774): Max retries exceeded with url: /v2/d117e271b78248de8a26e572197fd149/servers/detail (Caused by <class 'socket.error'>: [Errno 111] Connection refused)

  Here is the trace from nova-api.log:

  2014-05-16 20:41:28.602 22728 DEBUG nova.openstack.common.processutils [-] Running cmd (subprocess): sudo nova-rootwrap /etc/nova/rootwrap.conf iptables-restore -c execute /usr/lib/python2.7/dist-packages/nova/openstack/common/processutils.py:154
  2014-05-16 20:41:28.646 22728 DEBUG nova.openstack.common.processutils [-] Result was 2 execute /usr/lib/python2.7/dist-packages/nova/openstack/common/processutils.py:187
  2014-05-16 20:41:28.646 22728 DEBUG nova.openstack.common.processutils [-] ['sudo', 'nova-rootwrap', '/etc/nova/rootwrap.conf', 'iptables-restore', '-c'] failed. Retrying. execute /usr/lib/python2.7/dist-packages/nova/openstack/common/processutils.py:199
  2014-05-16 20:41:30.278 22728 DEBUG nova.openstack.common.processutils [-] Running cmd (subprocess): sudo nova-rootwrap /etc/nova/rootwrap.conf iptables-restore -c execute /usr/lib/python2.7/dist-packages/nova/openstack/common/processutils.py:154
  2014-05-16 20:41:30.348 22728 DEBUG nova.openstack.common.processutils [-] Result was 2 execute /usr/lib/python2.7/dist-packages/nova/openstack/common/processutils.py:187
  2014-05-16 20:41:30.348 22728 DEBUG nova.openstack.common.lockutils [-] Released file lock "iptables" at /run/lock/nova/nova-iptables lock /usr/lib/python2.7/dist-packages/nova/openstack/common/lockutils.py:210
  2014-05-16 20:41:30.349 22728 DEBUG nova.openstack.common.lockutils [-] Semaphore / lock released "_apply" inner /usr/lib/python2.7/dist-packages/nova/openstack/common/lockutils.py:252
  2014-05-16 20:41:30.349 22728 CRITICAL nova [-] ProcessExecutionError: Unexpected error while running command.
  Command: sudo nova-rootwrap /etc/nova/rootwrap.conf iptables-restore -c
  Exit code: 2
  Stdout: ''
  Stderr: "iptables-restore v1.4.21: host/network `::1' not found\nError occurred at line: 17\nTry `iptables-restore -h' or 'iptables-restore --help' for more information.\n"
  2014-05-16 20:41:30.349 22728 TRACE nova Traceback (most recent call last):
  2014-05-16 20:41:30.349 22728 TRACE nova   File "/usr/bin/nova-api", line 10, in <module>
  2014-05-16 20:41:30.349 22728 TRACE nova     sys.exit(main())
  2014-05-16 20:41:30.349 22728 TRACE nova   File "/usr/lib/python2.7/dist-packages/nova/cmd/api.py", line 53, in main
  2014-05-16 20:41:30.349 22728 TRACE nova     server = service.WSGIService(api, use_ssl=should_use_ssl)
  2014-05-16 20:41:30.349 22728 TRACE nova   File "/usr/lib/python2.7/dist-packages/nova/service.py", line 329, in __init__
  2014-05-16 20:41:30.349 22728 TRACE nova     self.manager = self._get_manager()
  2014-05-16 20:41:30.349 22728 TRACE nova   File "/usr/lib/python2.7/dist-packages/nova/service.py", line 373, in _get_manager
  2014-05-16 20:41:30.349 22728 TRACE nova     return manager_class()
  2014-05-16 20:41:30.349 22728 TRACE nova   File "/usr/lib/python2.7/dist-packages/nova/api/manager.py", line 30, in __init__
  2014-05-16 20:41:30.349 22728 TRACE nova     self.network_driver.metadata_accept()
  2014-05-16 20:41:30.349 22728 TRACE nova   File "/usr/lib/python2.7/dist-packages/nova/network/linux_net.py", line 660, in metadata_accept
  2014-05-16 20:41:30.349 22728 TRACE nova     iptables_manager.apply()
  2014-05-16 20:41:30.349 22728 TRACE nova   File "/usr/lib/python2.7/dist-packages/nova/network/linux_net.py", line 428, in apply
  2014-05-16 20:41:30.349 22728 TRACE nova     self._apply()
  2014-05-16 20:41:30.349 22728 TRACE nova   File "/usr/lib/python2.7/dist-packages/nova/openstack/common/lockutils.py", line 249, in inner
  2014-05-16 20:41:30.349 22728 TRACE nova     return f(*args, **kwargs)
  2014-05-16 20:41:30.349 22728 TRACE nova   File "/usr/lib/python2.7/dist-packages/nova/network/linux_net.py", line 457, in _apply
  2014-05-16 20:41:30.349 22728 TRACE nova     attempts=5)
  2014-05-16 20:41:30.349 22728 TRACE nova   File "/usr/lib/python2.7/dist-packages/nova/network/linux_net.py", line 1205, in _execute
  2014-05-16 20:41:30.349 22728 TRACE nova     return utils.execute(*cmd, **kwargs)
  2014-05-16 20:41:30.349 22728 TRACE nova   File "/usr/lib/python2.7/dist-packages/nova/utils.py", line 164, in execute
  2014-05-16 20:41:30.349 22728 TRACE nova     return processutils.execute(*cmd, **kwargs)
  2014-05-16 20:41:30.349 22728 TRACE nova   File "/usr/lib/python2.7/dist-packages/nova/openstack/common/processutils.py", line 193, in execute
  2014-05-16 20:41:30.349 22728 TRACE nova     cmd=' '.join(cmd))
  2014-05-16 20:41:30.349 22728 TRACE nova ProcessExecutionError: Unexpected error while running command.
  2014-05-16 20:41:30.349 22728 TRACE nova Command: sudo nova-rootwrap /etc/nova/rootwrap.conf iptables-restore -c
  2014-05-16 20:41:30.349 22728 TRACE nova Exit code: 2
  2014-05-16 20:41:30.349 22728 TRACE nova Stdout: ''
  2014-05-16 20:41:30.349 22728 TRACE nova Stderr: "iptables-restore v1.4.21: host/network `::1' not found\nError occurred at line: 17\nTry `iptables-restore -h' or 'iptables-restore --help' for more information.\n"
  2014-05-16 20:41:30.349 22728 TRACE nova
  2014-05-16 20:41:30.496 22854 INFO nova.openstack.common.service [-] Parent process has died unexpectedly, exiting
  2014-05-16 20:41:30.501 22854 INFO nova.wsgi [-] Stopping WSGI server.
  2014-05-16 20:41:30.498 22828 INFO nova.openstack.common.service [-] Parent process has died unexpectedly, exiting
  2014-05-16 20:41:30.502 22828 INFO nova.wsgi [-] Stopping WSGI server.

  My nova.conf file is following:

  [DEFAULT]

  use_ipv6 = True
  my_ip = 2001:db8:0::1

  rpc_backend = rabbit
  rabbit_host = ctrl

  # verbose = True
  debug = True
  logdir = /var/log/nova
  state_path = /var/lib/nova
  lock_path = /run/lock/nova

  s3_host = ctrl
  ec2_host = ctrl
  ec2_dmz_host = ctrl
  cc_host = ctrl

  ec2_url = http://ctrl:8773/services/Cloud
  nova_url = http://ctrl:8774/v1.1/

  api_paste_config = /etc/nova/api-paste.ini

  root_helper = sudo nova-rootwrap /etc/nova/rootwrap.conf

  resume_guests_state_on_host_boot = True

  osapi_compute_listen = 2001:db8:0::1
  osapi_compute_listen_port = 8774

  # Scheduler
  # scheduler_driver = nova.scheduler.simple.SimpleScheduler
  compute_scheduler_driver = nova.scheduler.filter_scheduler.FilterScheduler

  # Metadata stuff
  metadata_listen = 2001:db8:0::1
  metadata_host = 2001:db8:0::1
  metadata_port = 8775
  service_neutron_metadata_proxy = True
  neutron_metadata_proxy_shared_secret = metasecret13

  # Auth
  use_deprecated_auth = false
  auth_strategy = keystone
  keystone_ec2_url = http://ctrl:5000/v2.0/ec2tokens

  # Imaging service
  glance_api_servers = ctrl:9292
  image_service = nova.image.glance.GlanceImageService

  # INSTANCE DISK BACKEND
  libvirt_images_type = lvm
  libvirt_images_volume_group = nova-local
  libvirt_sparse_logical_volumes = false

  # VNC configuration - Dual-Stacked - DISABLED, go for SPICE instead!
  vnc_enabled = False
  novnc_enabled = False
  # novncproxy_base_url = http://ctrl:6080/vnc_auto.html
  # novncproxy_host = ::
  # novncproxy_port = 6080

  # NETWORK - NEUTRON
  network_api_class = nova.network.neutronv2.api.API
  neutron_url = http://ctrl:9696/
  neutron_auth_strategy = keystone
  neutron_admin_tenant_name = service
  neutron_admin_username = neutron
  neutron_admin_password = service_pass
  neutron_admin_auth_url = http://ctrl:35357/v2.0/
  linuxnet_interface_driver = nova.network.linux_net.LinuxOVSInterfaceDriver
  firewall_driver = nova.virt.firewall.NoopFirewallDriver
  security_group_api = neutron

  # firewall_driver = nova.virt.libvirt.firewall.IptablesFirewallDriver

  libvirt_vif_driver = nova.virt.libvirt.vif.LibvirtGenericVIFDriver
  # libvirt_vif_driver = nova.virt.libvirt.vif.LibvirtHybridOVSBridgeDriver
  # libvirt_vif_driver = nova.virt.libvirt.vif.LibvirtOpenVswitchVirtualPortDriver

  # Cinder
  volume_api_class = nova.volume.cinder.API
  osapi_volume_listen_port = 5900

  # SPICE configuration - Dual-Stacked
  [spice]
  enabled = True
  spicehtml5proxy_host = ::
  html5proxy_base_url = http://ctrl:6082/spice_auto.html
  keymap = en-us

  [database]
  connection = mysql://novaUser:novaPass@ctrl/nova

  [keystone_authtoken]
  auth_uri = http://ctrl:5000
  auth_host = ctrl
  auth_port = 35357
  auth_protocol = http
  admin_tenant_name = service
  admin_user = nova
  admin_password = service_pass

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References

[Bug 1340641] [NEW] nova-api crashes when using ipv6-address for metadata API
From: Ville Salmela, 2014-07-11