Github user bhaisaab commented on the pull request: https://github.com/apache/cloudstack/pull/768#issuecomment-138788442 @wilderrodrigues testing would require some usage data; and global settings (search for quota in the UI) that are similar to usage ones, there is an enable setting you set it to true and rest are self-explanatory. In the UI you goto ui/plugins/plugins.js and enable the UI plugin and you can browse the quota statement, credits etc via the UI. You start by deploying a usage/mgmt server with some usage data that is not processed (the quota_calculated column will be false or zero), you set a tariff with some effective date (you can set this directly in the cloud_usage database's quota_tariff table with some values, the quota types are same as usage types) and add some quota credits to an account (say admin); the next time usage aggregation thread runs, quota calculation thread would run next and basically tell you how much you've consumed, in case a threshold is reached like quota is low or exhausted it would send out emails and/or lock accounts based on global or account level setti ngs etc. In summary if someone wants to have a DigitalOcean kind of simple credit/quota system, it is doable using this feature/plugin where quota or amounts are credited (prepaid) and they reduce over time based on actual cloud usage and a tariff. This feature does not support any credit card or payment gateway; so admins (globally) or domain admins (for a specific domain) can add credits to an account (on the flip side - to deduct, they can also add a negative credit). @abhinandanprateek can you add details on using the plugin on the admin docs https://github.com/apache/cloudstack-docs-admin/tree/master/source and/or on the FS as well.
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