> [joehuang] Could you pls. make it more clear for the deployment mode > of cells when used for globally distributed DCs with single API. Do > you mean cinder/neutron/glance/ceilometer will be shared by all > cells, and use RPC for inter-dc communication, and only support one > vendor's OpenStack distribution? How to do the cross data center > integration and troubleshooting with RPC if the > driver/agent/backend(storage/network/sever) from different vendor.
Correct, cells only applies to single-vendor distributed deployments. In both its current and future forms, it uses private APIs for communication between the components, and thus isn't suited for a multi-vendor environment. Just MHO, but building functionality into existing or new components to allow deployments from multiple vendors to appear as a single API endpoint isn't something I have much interest in. --Dan
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