Hi Yaguang, [also posted this on dev]
Thanks, now one more question – When I send the request out, I send it to the exchange ‘nova’ and routing key ‘conductor’ (using RabbitMQ), this will take the message to the Nova Conductor on the controller, I have been able to do that much. I do see that there is a ‘reply queue’ embedded in the above message so presumably the Nova Conductor will use that queue to send back the response, is that correct ? If the above is correct, what is the ‘exchange’ used Nova Conductor to send back this response. Regards -Prashant From: Yaguang Tang [mailto:[email protected]] Sent: Wednesday, April 16, 2014 11:25 AM To: Prashant Upadhyaya Cc: [email protected] Subject: Re: [Openstack] Question regarding Nova in Havana Hi Prashant, when the service starts, it checks if it has already registered in the database, if not, it will update the db to create an item for itself. you can see from the nova/service.py 149 def start(self): 150 verstr = version.version_string_with_package() 151 LOG.audit(_('Starting %(topic)s node (version %(version)s)'), 152 {'topic': self.topic, 'version': verstr}) 153 self.basic_config_check() 154 self.manager.init_host() 155 self.model_disconnected = False 156 ctxt = context.get_admin_context() 157 try: 158 self.service_ref = self.conductor_api.service_get_by_args(ctxt, 159 self.host, self.binary) 160 self.service_id = self.service_ref['id'] 161 except exception.NotFound: 162 self.service_ref = self._create_service_ref(ctxt) I think you need to add this logic to your fake nova-compute service. 2014-04-16 12:04 GMT+08:00 Prashant Upadhyaya <[email protected]<mailto:[email protected]>>: Hi, I am writing a Compute Node Simulator. The idea is that I would write a piece of software using C which honors the RabbitMQ interface towards the Controller, but will not actually do the real thing – everything on the Compute Node will be simulated by my simulator software. The problem I am facing, that I have not been able to get my simulated CN listed in the output of nova-manage service list I am on Havana, and my simulator is sending a periodic ‘service_update’ and ‘compute_node_update’ RPC messages to the ‘nova’ exchange and the ‘conductor’ routing key. I can manipulate the above messages at will to fool the controller. (I observe the messages from a real CN and take cues from there to construct a fake one from my simulator) Question is – what causes the controller to add a new Nova Compute in its database, is it the ‘service_update’ RPC or something else. Hopefully you can help me reverse engineer the interface. Regards -Prashant "DISCLAIMER: This message is proprietary to Aricent and is intended solely for the use of the individual to whom it is addressed. It may contain privileged or confidential information and should not be circulated or used for any purpose other than for what it is intended. If you have received this message in error, please notify the originator immediately. If you are not the intended recipient, you are notified that you are strictly prohibited from using, copying, altering, or disclosing the contents of this message. Aricent accepts no responsibility for loss or damage arising from the use of the information transmitted by this email including damage from virus." _______________________________________________ Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack Post to : [email protected]<mailto:[email protected]> Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack -- Tang Yaguang Canonical Ltd. | www.ubuntu.com<http://www.ubuntu.com> | www.canonical.com<http://www.canonical.com> Mobile: +86 152 1094 6968 gpg key: 0x187F664F "DISCLAIMER: This message is proprietary to Aricent and is intended solely for the use of the individual to whom it is addressed. It may contain privileged or confidential information and should not be circulated or used for any purpose other than for what it is intended. If you have received this message in error, please notify the originator immediately. If you are not the intended recipient, you are notified that you are strictly prohibited from using, copying, altering, or disclosing the contents of this message. Aricent accepts no responsibility for loss or damage arising from the use of the information transmitted by this email including damage from virus."
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