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[Bug 2015090] Re: neutron.agent.dhcp.agent TypeError: 'bool' object is not subscriptable

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** Description changed:

- [Impact]
- 
- In a fresh jammy-antelope environment the metadata service is not
- available to the overcloud deployed instances, this is an environment
- using neutron-openvswitch environment (not OVN), when looking into the
- logs the stacktrace below is suspicious. The metadata service becomes
- available when restarting the services (e.g. juju config neutron-
- openvswitch debug=True)
- 
- [Test Case]
- 
- ```
- git clone https://opendev.org/openstack/charm-neutron-openvswitch
- cd charm-neutron-openvswitch
- git review -d https://review.opendev.org/c/openstack/charm-neutron-openvswitch/+/873819
- tox -e build  # make sure charmcraft-2.1 is installed before
- tox -e func-target -- jammy-antelope
- ```
+ In a fresh environment running Antelope (on top of Ubuntu 22.04), with a
+ DVR configuration (neutron-dhcp-agent and neutron-metadata-agent running
+ on compute nodes) the metadata service is not available instances, this
+ is an environment using neutron-openvswitch environment (not OVN), when
+ looking into the logs the stacktrace below indicates an unexpected data
+ type.
  
  [Stacktrace]
  
  2023-03-31 19:35:06.093 58625 DEBUG neutron.agent.dhcp.agent [-] Calling driver for network: 6d246d86-11b5-4d5f-aa9c-c2bcbcc28b62/seg=None action: get_metadata_bind_interface _call_driver /usr/lib/python3/dist-packages/neutron/agent/dhcp/agent.py:242
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent [-] 'bool' object is not subscriptable: TypeError: 'bool' object is not subscriptable
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent Traceback (most recent call last):
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/common/utils.py", line 182, in call
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent     return func(*args, **kwargs)
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/agent/dhcp/agent.py", line 434, in safe_configure_dhcp_for_network
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent     self.configure_dhcp_for_network(network)
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/osprofiler/profiler.py", line 159, in wrapper
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent     result = f(*args, **kwargs)
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/agent/dhcp/agent.py", line 447, in configure_dhcp_for_network
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent     self.update_isolated_metadata_proxy(network)
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/osprofiler/profiler.py", line 159, in wrapper
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent     result = f(*args, **kwargs)
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/agent/dhcp/agent.py", line 763, in update_isolated_metadata_proxy
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent     self.enable_isolated_metadata_proxy(network)
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/osprofiler/profiler.py", line 159, in wrapper
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent     result = f(*args, **kwargs)
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/agent/dhcp/agent.py", line 819, in enable_isolated_metadata_proxy
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent     metadata_driver.MetadataDriver.spawn_monitored_metadata_proxy(
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/agent/metadata/driver.py", line 244, in spawn_monitored_metadata_proxy
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent     ip_lib.IpAddrCommand(
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/agent/linux/ip_lib.py", line 609, in wait_until_address_ready
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent     common_utils.wait_until_true(
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/common/utils.py", line 744, in wait_until_true
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent     while not predicate():
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/agent/linux/ip_lib.py", line 594, in is_address_ready
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent     addr_info = self.list(to=address)[0]
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/agent/linux/ip_lib.py", line 574, in list
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent     devices = get_devices_with_ip(self._parent.namespace, name=self.name,
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/agent/linux/ip_lib.py", line 431, in name
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent     return self._parent.name
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/agent/linux/ip_lib.py", line 416, in name
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent     return self._name[:constants.DEVICE_NAME_MAX_LEN]
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent TypeError: 'bool' object is not subscriptable
- 2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent 
+ 2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent
  2023-03-31 19:35:06.099 58625 INFO neutron.agent.dhcp.agent [None req-4298bc12-95ea-476c-8503-7258e4454721 - - - - - -] Synchronizing state complete

** Also affects: neutron
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/2015090

Title:
  neutron.agent.dhcp.agent TypeError: 'bool' object is not subscriptable

Status in OpenStack Neutron Open vSwitch Charm:
  New
Status in neutron:
  New
Status in neutron package in Ubuntu:
  New

Bug description:
  In a fresh environment running Antelope (on top of Ubuntu 22.04), with
  a DVR configuration (neutron-dhcp-agent and neutron-metadata-agent
  running on compute nodes) the metadata service is not available
  instances, this is an environment using neutron-openvswitch
  environment (not OVN), when looking into the logs the stacktrace below
  indicates an unexpected data type.

  [Stacktrace]

  2023-03-31 19:35:06.093 58625 DEBUG neutron.agent.dhcp.agent [-] Calling driver for network: 6d246d86-11b5-4d5f-aa9c-c2bcbcc28b62/seg=None action: get_metadata_bind_interface _call_driver /usr/lib/python3/dist-packages/neutron/agent/dhcp/agent.py:242
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent [-] 'bool' object is not subscriptable: TypeError: 'bool' object is not subscriptable
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent Traceback (most recent call last):
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/common/utils.py", line 182, in call
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent     return func(*args, **kwargs)
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/agent/dhcp/agent.py", line 434, in safe_configure_dhcp_for_network
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent     self.configure_dhcp_for_network(network)
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/osprofiler/profiler.py", line 159, in wrapper
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent     result = f(*args, **kwargs)
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/agent/dhcp/agent.py", line 447, in configure_dhcp_for_network
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent     self.update_isolated_metadata_proxy(network)
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/osprofiler/profiler.py", line 159, in wrapper
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent     result = f(*args, **kwargs)
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/agent/dhcp/agent.py", line 763, in update_isolated_metadata_proxy
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent     self.enable_isolated_metadata_proxy(network)
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/osprofiler/profiler.py", line 159, in wrapper
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent     result = f(*args, **kwargs)
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/agent/dhcp/agent.py", line 819, in enable_isolated_metadata_proxy
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent     metadata_driver.MetadataDriver.spawn_monitored_metadata_proxy(
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/agent/metadata/driver.py", line 244, in spawn_monitored_metadata_proxy
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent     ip_lib.IpAddrCommand(
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/agent/linux/ip_lib.py", line 609, in wait_until_address_ready
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent     common_utils.wait_until_true(
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/common/utils.py", line 744, in wait_until_true
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent     while not predicate():
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/agent/linux/ip_lib.py", line 594, in is_address_ready
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent     addr_info = self.list(to=address)[0]
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/agent/linux/ip_lib.py", line 574, in list
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent     devices = get_devices_with_ip(self._parent.namespace, name=self.name,
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/agent/linux/ip_lib.py", line 431, in name
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent     return self._parent.name
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/agent/linux/ip_lib.py", line 416, in name
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent     return self._name[:constants.DEVICE_NAME_MAX_LEN]
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent TypeError: 'bool' object is not subscriptable
  2023-03-31 19:35:06.095 58625 ERROR neutron.agent.dhcp.agent
  2023-03-31 19:35:06.099 58625 INFO neutron.agent.dhcp.agent [None req-4298bc12-95ea-476c-8503-7258e4454721 - - - - - -] Synchronizing state complete

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