Open Stack

On Dec 10, 2013, at 4:47 PM, Isaku Yamahata <isaku.yamahata at gmail.com> wrote:

> On Tue, Dec 10, 2013 at 07:28:10PM +1300,
> Robert Collins <robertc at robertcollins.net> wrote:
> 
>> On 10 December 2013 19:16, Isaku Yamahata <isaku.yamahata at gmail.com> wrote:
>> 
>>> Answering myself. If connection is closed, it will reconnects automatically
>>> at rpc layer. See neutron.openstack.common.rpc.impl_{kombu, qpid}.py.
>>> So notifications during reconnects can be lost if AMQP service is set
>>> to discard notifications during no subscriber.
>> 
>> Which is fine: the agent repulls the full set it's running on that
>> machine, and life goes on.
> 
> On what event?
> Polling in agent seems effectively disabled by self.needs_resync with
> the current code.

If the agent is not connected, it is either down (needs_resync will be set to True on launch) or experiencing a loss of connectivity to the amqp service (needs_resync will have been set to True on error).  The loss of notifications is not a problem in either case.


m.