China Mobile's private cloud project at Hohehot data center, has built 1800 virtualization nodes and 3000 baremetal nodes for single pod. During the construction and integration stage, we recorded the difficulty in deploymemt and performance limit for multi-region environment. We study the networking scheme for neutron integrated with data center, and resolve the high concurrency problem with fcsan and serversan.

In this talk we will show how to overcome these difficulty and build a large-scale private cloud gracefully.

Include:
* Architecture
* Use-cases
* Deployment
* Troubleshooting skills
* Common issues

Attendees will know.
How to achieve good performace for muli-region with 1800 V-nodes and 3000 B-nodes ?
How to integrated trust zone and demilitarized zone with OpenStack(Nova, Neutron, Cinder, Ironic)?
How to coordinate cinder'process synchronization with concurrency limit in storage backend?
How to build remaining pods gracefully with k8s and container deployment?

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