On 25 Apr 2014, at 12:30 am, Chris Behrens <cbehr...@codestud.com> wrote:
>>> So, does your nova-conductor not have object version 1.13? As I was trying
>>> to get at in a previous reply, I think the only way this can possibly work
>>> is that you have Icehouse nova-conductor running in ALL cells.
>>
>> OK so in my compute cell I am now running an Icehouse conductor. Everything
>> else is Havana including the DB version.
>>
>> This actually seems to make all the things that didn’t work now work.
>> However it also means that the thing that did work (booting an instance) no
>> longer works.
>> This is an easy fix and just requires nova-conductor to call the
>> run_instance scheduler rpcapi method with version 2.9 as opposed the
>> icehouse version 3.0.
>> I don’t think anything has changed here so this might be an easy fix that
>> could be pushed upstream. It just needs to change the scheduler rpcapi to be
>> aware what version it can use.
>> I changed the upgrade_levels scheduler=havana but that wasn’t handled by the
>> scheduler rpcapi and just gave a version not new enough exception.
>>
>> I think I’m making progress…..
>
> Cool. So, what is tested upstream is upgrading everything except
> nova-compute. You could try upgrading nova-scheduler as well.
Yeah that fixes it although I don’t think that’s needed. Ideally what I want to
do is upgrade our API cell to Icehouse then one at a time upgrade each of our
compute cells.
This is possible in 2 ways:
1. Hack the object_backport code in havana to handle icehouse objects (and a
few other minor things I mentioned earlier)
2. Run an Icehouse conductor in the compute cell
Still figuring out the best way.
> Although, I didn’t think we had any build path going through conductor yet.
> Do you happen to have a traceback from that? (Curious what the call path
> looks like)
2014-04-25 08:28:35.975 1171 ERROR oslo.messaging.rpc.dispatcher [-] Exception
during message handling: Specified RPC version cap, 2.9, is too low. Needs to
be higher than 3.0.
2014-04-25 08:28:35.975 1171 TRACE oslo.messaging.rpc.dispatcher Traceback
(most recent call last):
2014-04-25 08:28:35.975 1171 TRACE oslo.messaging.rpc.dispatcher File
"/opt/nova-icehouse/.venv/local/lib/python2.7/site-packages/oslo/messaging/rpc/dispatcher.py",
line 133, in _dispatch_and_reply
2014-04-25 08:28:35.975 1171 TRACE oslo.messaging.rpc.dispatcher
incoming.message))
2014-04-25 08:28:35.975 1171 TRACE oslo.messaging.rpc.dispatcher File
"/opt/nova-icehouse/.venv/local/lib/python2.7/site-packages/oslo/messaging/rpc/dispatcher.py",
line 176, in _dispatch
2014-04-25 08:28:35.975 1171 TRACE oslo.messaging.rpc.dispatcher return
self._do_dispatch(endpoint, method, ctxt, args)
2014-04-25 08:28:35.975 1171 TRACE oslo.messaging.rpc.dispatcher File
"/opt/nova-icehouse/.venv/local/lib/python2.7/site-packages/oslo/messaging/rpc/dispatcher.py",
line 122, in _do_dispatch
2014-04-25 08:28:35.975 1171 TRACE oslo.messaging.rpc.dispatcher result =
getattr(endpoint, method)(ctxt, **new_args)
2014-04-25 08:28:35.975 1171 TRACE oslo.messaging.rpc.dispatcher File
"/opt/nova-icehouse/nova/conductor/manager.py", line 797, in build_instances
2014-04-25 08:28:35.975 1171 TRACE oslo.messaging.rpc.dispatcher
legacy_bdm_in_spec=legacy_bdm)
2014-04-25 08:28:35.975 1171 TRACE oslo.messaging.rpc.dispatcher File
"/opt/nova-icehouse/nova/scheduler/rpcapi.py", line 116, in run_instance
2014-04-25 08:28:35.975 1171 TRACE oslo.messaging.rpc.dispatcher
cctxt.cast(ctxt, 'run_instance', **msg_kwargs)
2014-04-25 08:28:35.975 1171 TRACE oslo.messaging.rpc.dispatcher File
"/opt/nova-icehouse/.venv/local/lib/python2.7/site-packages/oslo/messaging/rpc/client.py",
line 130, in cast
2014-04-25 08:28:35.975 1171 TRACE oslo.messaging.rpc.dispatcher
self._check_version_cap(msg.get('version'))
2014-04-25 08:28:35.975 1171 TRACE oslo.messaging.rpc.dispatcher File
"/opt/nova-icehouse/.venv/local/lib/python2.7/site-packages/oslo/messaging/rpc/client.py",
line 115, in _check_version_cap
2014-04-25 08:28:35.975 1171 TRACE oslo.messaging.rpc.dispatcher
version_cap=self.version_cap)
2014-04-25 08:28:35.975 1171 TRACE oslo.messaging.rpc.dispatcher
RPCVersionCapError: Specified RPC version cap, 2.9, is too low. Needs to be
higher than 3.0.
Sam_______________________________________________
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