| 摘要 |
A system for upgrading a multi-tiered application. In response to receiving a request to upgrade a multi-tiered application, wherein components of the multi-tiered application are deployed across a plurality of virtual machines, an appropriate integrated patch is selected for the upgrade. The selected integrated patch includes an integrated set of patches for the components of the multi-tiered application, state update data, and order constraints. The components of the multi-tiered application specified in the selected integrated patch are upgraded by using the integrated set of patches and order constraints. In addition, the state of the components of the multi-tiered application are updated by using the state update data. Then, the updated state of the multi-tiered application is saved to storage.
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