雲管、SDN、OpenStack組成的虛擬化雲計算：主機集羣建立過程

  最終返回集羣（aggregate）實例json 集羣實例舉例： { "aggregate": { "availability_zone": "a", "created_at": "2019-12-27T23:47:30", "deleted": false, "deleted_at": null, "hos

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