[Bug 1629097] [NEW] ovsdb-client processes not getting cleaned up

[Corey Bryant]

Public bug reported:

This can be recreated with the openstack charms using xenial-newton-staging.  On newton deploys, neutron-gateway and nova-compute units will exhaust memory due to compounding ovsdb-client processes:
sudo /usr/bin/neutron-rootwrap /etc/neutron/rootwrap.conf ovsdb-client monitor Interface name,ofport,external_ids --format=json

$ top -n1 -b -o VIRT
http://paste.ubuntu.com/23252407/

$ ps aux|grep ovsdb-client
http://paste.ubuntu.com/23252658/

Restarting openvswitch cleans up the processes but they just start piling again up soon after:
sudo systemctl restart openvswitch-switch

** Affects: neutron
     Importance: Undecided
         Status: New

** Changed in: openvswitch (Ubuntu)
   Importance: Undecided => High

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https://bugs.launchpad.net/bugs/1629097

Title:
  ovsdb-client processes not getting cleaned up

Status in neutron:
  New

Bug description:
  This can be recreated with the openstack charms using xenial-newton-staging.  On newton deploys, neutron-gateway and nova-compute units will exhaust memory due to compounding ovsdb-client processes:
  sudo /usr/bin/neutron-rootwrap /etc/neutron/rootwrap.conf ovsdb-client monitor Interface name,ofport,external_ids --format=json

  $ top -n1 -b -o VIRT
  http://paste.ubuntu.com/23252407/

  $ ps aux|grep ovsdb-client
  http://paste.ubuntu.com/23252658/

  Restarting openvswitch cleans up the processes but they just start piling again up soon after:
  sudo systemctl restart openvswitch-switch

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