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[Bug 2080365] [NEW] Permission denied on l3-agent and dhcp log

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Public bug reported:

I got this error on my l3-agent log and I don't know how to fix.

2024-09-11 11:35:00.672 3022 ERROR oslo_service.periodic_task [None req-dd0fc086-d150-42b1-8f65-a407c3023cd9 - - - - - -] Error during L3NATAgentWithStateReport.periodic_sync_routers_task: PermissionError: [Errno 13] Permission denied
2024-09-11 11:35:00.672 3022 ERROR oslo_service.periodic_task Traceback (most recent call last):
2024-09-11 11:35:00.672 3022 ERROR oslo_service.periodic_task   File "/usr/lib/python3/dist-packages/oslo_service/periodic_task.py", line 216, in run_periodic_tasks
2024-09-11 11:35:00.672 3022 ERROR oslo_service.periodic_task     task(self, context)
2024-09-11 11:35:00.672 3022 ERROR oslo_service.periodic_task   File "/usr/lib/python3/dist-packages/neutron/agent/l3/agent.py", line 890, in periodic_sync_routers_task
2024-09-11 11:35:00.672 3022 ERROR oslo_service.periodic_task     with self.namespaces_manager as ns_manager:
2024-09-11 11:35:00.672 3022 ERROR oslo_service.periodic_task   File "/usr/lib/python3/dist-packages/neutron/agent/l3/namespace_manager.py", line 71, in __enter__
2024-09-11 11:35:00.672 3022 ERROR oslo_service.periodic_task     self._all_namespaces = self.list_all()
2024-09-11 11:35:00.672 3022 ERROR oslo_service.periodic_task   File "/usr/lib/python3/dist-packages/neutron/agent/l3/namespace_manager.py", line 117, in list_all
2024-09-11 11:35:00.672 3022 ERROR oslo_service.periodic_task     namespaces = ip_lib.list_network_namespaces()
2024-09-11 11:35:00.672 3022 ERROR oslo_service.periodic_task   File "/usr/lib/python3/dist-packages/neutron/agent/linux/ip_lib.py", line 972, in list_network_namespaces
2024-09-11 11:35:00.672 3022 ERROR oslo_service.periodic_task     return privileged.list_netns(**kwargs)
2024-09-11 11:35:00.672 3022 ERROR oslo_service.periodic_task   File "/usr/lib/python3/dist-packages/oslo_privsep/priv_context.py", line 271, in _wrap
2024-09-11 11:35:00.672 3022 ERROR oslo_service.periodic_task     return self.channel.remote_call(name, args, kwargs,
2024-09-11 11:35:00.672 3022 ERROR oslo_service.periodic_task   File "/usr/lib/python3/dist-packages/oslo_privsep/daemon.py", line 215, in remote_call
2024-09-11 11:35:00.672 3022 ERROR oslo_service.periodic_task     raise exc_type(*result[2])
2024-09-11 11:35:00.672 3022 ERROR oslo_service.periodic_task PermissionError: [Errno 13] Permission denied
2024-09-11 11:35:00.672 3022 ERROR oslo_service.periodic_task 

I got this on dhcp-agent log:


2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent [-] Unable to enable dhcp for 02f6efbb-d1dd-402e-9ea3-3e857e4e9408.: PermissionError: [Errno 13] Permission denied
2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent Traceback (most recent call last):
2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/agent/dhcp/agent.py", line 270, in _call_driver
2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent     rv = getattr(driver, action)(**action_kwargs)
2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/agent/linux/dhcp.py", line 324, in enable
2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent     common_utils.wait_until_true(self._enable, timeout=300)
2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/common/utils.py", line 747, in wait_until_true
2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent     while not predicate():
2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/agent/linux/dhcp.py", line 336, in _enable
2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent     interface_name = self.device_manager.setup(
2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/agent/linux/dhcp.py", line 1832, in setup
2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent     ip_lib.IPWrapper().ensure_namespace(network.namespace)
2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/agent/linux/ip_lib.py", line 254, in ensure_namespace
2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent     ip = self.netns.add(name)
2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/agent/linux/ip_lib.py", line 736, in add
2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent     create_network_namespace(name)
2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/agent/linux/ip_lib.py", line 954, in create_network_namespace
2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent     privileged.create_netns(namespace, **kwargs)
2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/oslo_privsep/priv_context.py", line 271, in _wrap
2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent     return self.channel.remote_call(name, args, kwargs,
2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/oslo_privsep/daemon.py", line 215, in remote_call
2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent     raise exc_type(*result[2])
2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent PermissionError: [Errno 13] Permission denied
2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent 


I have the same configuration on my physical server and all is working
but I got this error on my virtual server where I installed openstack.

** Affects: neutron
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/2080365

Title:
  Permission denied on l3-agent and dhcp log

Status in neutron:
  New

Bug description:
  I got this error on my l3-agent log and I don't know how to fix.

  2024-09-11 11:35:00.672 3022 ERROR oslo_service.periodic_task [None req-dd0fc086-d150-42b1-8f65-a407c3023cd9 - - - - - -] Error during L3NATAgentWithStateReport.periodic_sync_routers_task: PermissionError: [Errno 13] Permission denied
  2024-09-11 11:35:00.672 3022 ERROR oslo_service.periodic_task Traceback (most recent call last):
  2024-09-11 11:35:00.672 3022 ERROR oslo_service.periodic_task   File "/usr/lib/python3/dist-packages/oslo_service/periodic_task.py", line 216, in run_periodic_tasks
  2024-09-11 11:35:00.672 3022 ERROR oslo_service.periodic_task     task(self, context)
  2024-09-11 11:35:00.672 3022 ERROR oslo_service.periodic_task   File "/usr/lib/python3/dist-packages/neutron/agent/l3/agent.py", line 890, in periodic_sync_routers_task
  2024-09-11 11:35:00.672 3022 ERROR oslo_service.periodic_task     with self.namespaces_manager as ns_manager:
  2024-09-11 11:35:00.672 3022 ERROR oslo_service.periodic_task   File "/usr/lib/python3/dist-packages/neutron/agent/l3/namespace_manager.py", line 71, in __enter__
  2024-09-11 11:35:00.672 3022 ERROR oslo_service.periodic_task     self._all_namespaces = self.list_all()
  2024-09-11 11:35:00.672 3022 ERROR oslo_service.periodic_task   File "/usr/lib/python3/dist-packages/neutron/agent/l3/namespace_manager.py", line 117, in list_all
  2024-09-11 11:35:00.672 3022 ERROR oslo_service.periodic_task     namespaces = ip_lib.list_network_namespaces()
  2024-09-11 11:35:00.672 3022 ERROR oslo_service.periodic_task   File "/usr/lib/python3/dist-packages/neutron/agent/linux/ip_lib.py", line 972, in list_network_namespaces
  2024-09-11 11:35:00.672 3022 ERROR oslo_service.periodic_task     return privileged.list_netns(**kwargs)
  2024-09-11 11:35:00.672 3022 ERROR oslo_service.periodic_task   File "/usr/lib/python3/dist-packages/oslo_privsep/priv_context.py", line 271, in _wrap
  2024-09-11 11:35:00.672 3022 ERROR oslo_service.periodic_task     return self.channel.remote_call(name, args, kwargs,
  2024-09-11 11:35:00.672 3022 ERROR oslo_service.periodic_task   File "/usr/lib/python3/dist-packages/oslo_privsep/daemon.py", line 215, in remote_call
  2024-09-11 11:35:00.672 3022 ERROR oslo_service.periodic_task     raise exc_type(*result[2])
  2024-09-11 11:35:00.672 3022 ERROR oslo_service.periodic_task PermissionError: [Errno 13] Permission denied
  2024-09-11 11:35:00.672 3022 ERROR oslo_service.periodic_task 

  I got this on dhcp-agent log:

  
  2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent [-] Unable to enable dhcp for 02f6efbb-d1dd-402e-9ea3-3e857e4e9408.: PermissionError: [Errno 13] Permission denied
  2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent Traceback (most recent call last):
  2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/agent/dhcp/agent.py", line 270, in _call_driver
  2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent     rv = getattr(driver, action)(**action_kwargs)
  2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/agent/linux/dhcp.py", line 324, in enable
  2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent     common_utils.wait_until_true(self._enable, timeout=300)
  2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/common/utils.py", line 747, in wait_until_true
  2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent     while not predicate():
  2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/agent/linux/dhcp.py", line 336, in _enable
  2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent     interface_name = self.device_manager.setup(
  2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/agent/linux/dhcp.py", line 1832, in setup
  2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent     ip_lib.IPWrapper().ensure_namespace(network.namespace)
  2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/agent/linux/ip_lib.py", line 254, in ensure_namespace
  2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent     ip = self.netns.add(name)
  2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/agent/linux/ip_lib.py", line 736, in add
  2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent     create_network_namespace(name)
  2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/neutron/agent/linux/ip_lib.py", line 954, in create_network_namespace
  2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent     privileged.create_netns(namespace, **kwargs)
  2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/oslo_privsep/priv_context.py", line 271, in _wrap
  2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent     return self.channel.remote_call(name, args, kwargs,
  2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent   File "/usr/lib/python3/dist-packages/oslo_privsep/daemon.py", line 215, in remote_call
  2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent     raise exc_type(*result[2])
  2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent PermissionError: [Errno 13] Permission denied
  2024-09-11 12:00:46.840 2999 ERROR neutron.agent.dhcp.agent 


  
  I have the same configuration on my physical server and all is working but I got this error on my virtual server where I installed openstack.

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