Dear All, Merry Christmas & Happy New Year! I'm new in TripleO. After some investigation, I have one question on UnderCloud & OverCloud. Per my understanding, UnderCloud will pre-install and set up all baremetal servers used for OverCloud. Seems like it assumes all baremetal server should be installed in advance. Then my question is from green and elasticity point of view. Initially OverCloud should have zero baremetal server. Per user demands, OverCloud Nova Scheduler should decide if I need more baremetal server, then talk to UnderCloud to allocate more baremetal servers, which will use Heat to orchestrate baremetal server starts. Does it make senses? Does it already plan in the roadmap? If UnderCloud resources are created/deleted elastically, why not OverCloud talks to Ironic to allocate resource directly? Seems like it can achieve same goal. What else features UnderCloud will provide? Thanks in advance. Best RegardsLeslie
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