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[Doug Hellmann <doug@xxxxxxxxxxxxxxxx>]

** Changed in: neutron
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1511401

Title:
  L3 agent no longer restarts on SIGHUP

Status in neutron:
  Fix Released

Bug description:
  l3-agent, as well as other neutron services is launched using oslo.service which sets handlers for such signals as SIGTERM and SIGHUP. On receiving SIGHUP a service is supposed to reload its config files and restart. [1]
  Meanwhile, this is not so for l3 agent. PrefixDelegation class that is instantiated in L3NATAgent overrides handler for SIGHUP [2], thus removing handler that was set in oslo.service.

  To restore the expected behavior self.pd_update_cb() should be moved
  to the reset method.

  [1] http://docs.openstack.org/developer/oslo.service/usage.html#signal-handling
  [2] https://github.com/openstack/neutron/blob/master/neutron/agent/linux/pd.py#L281-L288

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