** Changed in: neutron
Status: In Progress => Fix Released
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https://bugs.launchpad.net/bugs/1788556
Title:
dhcp agent error reading lease file
Status in neutron:
Fix Released
Bug description:
With a large number of VMs, at some point, the dhcp agent throws this
index error trying to read the lease file:
2018-08-15 16:17:40.771 40391 ERROR neutron.agent.dhcp.agent
[req-cf1c7a8e-b718-4c46-b7be-999747c7e526 afe623c9e78e47febd76617008b9138e
c4f22248feb9430093858a0404b779d5 - - -] Unable to reload_allocations dhcp for
ef71f918-dc0d-4a6e-8d37-0f5f0720e295.: IndexError: list index out of range
2018-08-15 16:17:40.771 40391 ERROR neutron.agent.dhcp.agent Traceback (most
recent call last):
2018-08-15 16:17:40.771 40391 ERROR neutron.agent.dhcp.agent File
"/opt/stack/venv/neutron-20180718T154642Z/lib/python2.7/site-packages/neutron/agent/dhcp/agent.py",
line 142, in call_driver
2018-08-15 16:17:40.771 40391 ERROR neutron.agent.dhcp.agent
getattr(driver, action)(**action_kwargs)
2018-08-15 16:17:40.771 40391 ERROR neutron.agent.dhcp.agent File
"/opt/stack/venv/neutron-20180718T154642Z/lib/python2.7/site-packages/neutron/agent/linux/dhcp.py",
line 512, in reload_allocations
2018-08-15 16:17:40.771 40391 ERROR neutron.agent.dhcp.agent
self._release_unused_leases()
2018-08-15 16:17:40.771 40391 ERROR neutron.agent.dhcp.agent File
"/opt/stack/venv/neutron-20180718T154642Z/lib/python2.7/site-packages/neutron/agent/linux/dhcp.py",
line 825, in _release_unused_leases
2018-08-15 16:17:40.771 40391 ERROR neutron.agent.dhcp.agent v6_leases =
self._read_v6_leases_file_leases(leases_filename)
2018-08-15 16:17:40.771 40391 ERROR neutron.agent.dhcp.agent File
"/opt/stack/venv/neutron-20180718T154642Z/lib/python2.7/site-packages/neutron/agent/linux/dhcp.py",
line 810, in _read_v6_leases_file_leases
2018-08-15 16:17:40.771 40391 ERROR neutron.agent.dhcp.agent (iaid, ip,
client_id) = parts[1], parts[2], parts[4]
2018-08-15 16:17:40.771 40391 ERROR neutron.agent.dhcp.agent IndexError: list
index out of range
When this happens, the agent calls sync_state to fully resync the
agent state, which is a serious problem when dealing with a lot of
ports in a scale environment.
Is it possible to avoid a full resync of all ports?
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