OpenStack Compute (nova)

nova.conf - controller vs compute node

Asked by dipak

Hi,

I am unclear about two things, with respect to nova.conf. I am currently running the controller node and compute node on different servers.

1. I am trying to figure out what could be the difference in nova.conf for the controller node and the compute nodes ? I mean how should my nova.conf look like for the controller node. At the moment it looks exactly like the compute node's nova.conf

2. How does the compute node know, where is the controller node running ? I mean where is the ip address/name of the controller node identified inside the compute node ? If the answer is nova.conf of the compute node then which entry/entries say so ?

Thanks,
Dipak

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Sateesh (sateesh-chodapuneedi) said : 		#1

Compute node knows that controller node through the flags specified in nova.conf

The details of flags to be modified is in openstack documentaion (link below)
http://docs.openstack.org/cactus/openstack-compute/admin/content/configuring-multiple-compute-nodes.html

Essentially the flags specify where the services the cloud wide-services like api, rabbitmq, mysql, glance etc. are running.

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