Open Stack

 Hello, 
I have 2 different openstack clusters. They share glance and keystone. I am trying to configure them to share quantum service as well. For that I am running a common network node that is running all the agents (quantum-dhcp/quantum-l3/quantum-metadata/quantum-openvswitch agents) with user namespace option enabled and using gre. With this configuration, sharing quantum between two clusters works except the metadata service. metadata agent ini points to metadata host of cluster 1. So, instance launched on cluster 2 is not able to find the metadata information.  What is the best way to use common quantums service between openstack clusters.
Thanks,
-vj
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