In 'Project'->'Compute'->'Overview' pannel of Horizon, a common user can see some OpenStack resources usage information in 'Limit Summary' table in pie chart. By default, that includes 'Instances', 'VCPUs', 'RAM', 'Floating IPs', 'Security Groups', 'Volumes' and 'Volume Storage'. Horizon will get usage of those resourc继续阅读 »
Background
Resources can be reserved by frameworks in a variety of ways, including:
Static reservations
Dynamic reservations via Offer::Operations
Dynamic reservations via HTTP endpoints
Quotas (None-Goal)继续阅读 »