Hello, I have finished the installation guide: http://docs.openstack.org/liberty/install-guide-rdo/
But now I have a lot of questions about controllers scalability. Please, answer if you can. If I understood correctly, all requests to any node (compute or storage) will pass through controller nodes and this requests can write some data into mysql or rabbitmq. Isn't it a bottleneck? We use Mysql Galera Cluster on the controller nodes, so each node will keep all data from all nodes. That is why we must scale each node vertically. I am not sure but we can stretch against into disk space on controller nodes. The same story about RabbitMQ. Have I correctly understood it? If no (I hope), can you point me on the documentation/article where I can read about it? If yes, can you suggest me how to build a good cluster? The second question is about compute nodes requests. How will go one request from the first compute node to the second compute node? Does it go straight from the first compute node to the second or it go from the first compute node to the controller node (which?) and then from the controller node to the second compute node? Please, share any information which you know about it or point me to right articles where I can read about it Best Regards, Alexandr
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