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[Bogdan Dobrelya <bdobrelia@xxxxxxxxxxxx>]

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

** Changed in: mos
       Status: New => Confirmed

** Changed in: mos
   Importance: Undecided => High

** Changed in: mos
    Milestone: None => 5.1

** Changed in: mos
     Assignee: (unassigned) => MOS Nova (mos-nova)

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Engineering Team, which is subscribed to OpenStack Compute (nova).
https://bugs.launchpad.net/bugs/1101404

Title:
  nova syslog logging to /dev/log race condition in python 2.6

Status in OpenStack Identity (Keystone):
  Confirmed
Status in Mirantis OpenStack:
  Confirmed
Status in OpenStack Compute (Nova):
  Confirmed
Status in Oslo - a Library of Common OpenStack Code:
  Confirmed

Bug description:
  
  running nova-api-ec2
  running rsyslog

  service rsyslog restart ; service nova-api-ec2 restart

  nova-api-ec2 consumes up to 100% of the available CPU (or at least a
  full core) and s not responsive.  /var/log/nova/nova-api-ec2.lgo
  states the socket is already in use.

  strace the process

  sendto(3, "<142>2013-01-18 20:00:22 24882 INFO nova.service [-] Caught
  SIGTERM, exiting\0", 77, 0, NULL, 0) = -1 ENOTCONN (Transport endpoint
  is not connected)

  service nova-api-ec2 restart fails as upstart already thinks the
  process has been terminated.

  The only way to recover is to pkill -9 nova-api-ec2 and then restart
  it with 'service nova-api-ec2 restart'.

  The same behavior has been seen in all nova-api services.

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