[openstack-dev] [neutron] Supporting retries in neutronclient

Mike Spreitzer mspreitz at us.ibm.com
Wed May 28 03:13:17 UTC 2014


Joe Gordon <joe.gordon0 at gmail.com> wrote on 05/27/2014 07:31:16 PM:

> From: Joe Gordon <joe.gordon0 at gmail.com>
> To: "OpenStack Development Mailing List (not for usage questions)" 
> <openstack-dev at lists.openstack.org>, 
> Date: 05/27/2014 07:32 PM
> Subject: Re: [openstack-dev] [neutron] Supporting retries in 
neutronclient
> 
> 

> On Tue, May 27, 2014 at 1:51 PM, Eugene Nikanorov 
<enikanorov at mirantis.com
> > wrote:
> In fact, nova should be careful about changing number of retries for
> neutron client.
> It's known that under significant load (people test serial VM 
> creation) neutron client may timeout on POST operation which does 
> port creation; retrying this again leads to multiple fixed IPs 
> assigned to a VM
> 
> This sounds like a bug in nova, nova should be able to handle 
> intermittent service timeouts without doing the wrong thing.

It's just one of many bugs that are unavoidable consequences of APIs that 
do not support idempotent usage.
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