Public bug reported:
As of today, OvsdbMonitor used in neutron-openswitch-agent module, re-spawns
the monitor in case of any verb that appears on the stderr of the child monitor
process irrespective of the severity or relevance.
It is not ideal to restart child monitor process when the errors are not fatal
or error, such as warnings from a plugin driver that echos warnings to the
stderr etc.
And if such errors appears periodically, there are two side effects
a) Too frequent monitor processes could result in db.sock contention.
b) Frequent re-starts, would result in neutron agent missing interface
additions.
In ideal case, only fatal errors where it would effect the monitoring or
change detection on bridges ports and interfaces should result in
restart of the monitor, not like the case as it exists today.
** Affects: neutron
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1458770
Title:
OvsdbMonitor module should respawn monitor only on specific failures
Status in OpenStack Neutron (virtual network service):
New
Bug description:
As of today, OvsdbMonitor used in neutron-openswitch-agent module, re-spawns
the monitor in case of any verb that appears on the stderr of the child monitor
process irrespective of the severity or relevance.
It is not ideal to restart child monitor process when the errors are not
fatal or error, such as warnings from a plugin driver that echos warnings to
the stderr etc.
And if such errors appears periodically, there are two side effects
a) Too frequent monitor processes could result in db.sock contention.
b) Frequent re-starts, would result in neutron agent missing interface
additions.
In ideal case, only fatal errors where it would effect the monitoring
or change detection on bridges ports and interfaces should result in
restart of the monitor, not like the case as it exists today.
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https://bugs.launchpad.net/neutron/+bug/1458770/+subscriptions
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