系統升級的準備

原創 tyger 2020-02-25 16:27

0、測試兼容性了嗎？


1、如何不停服在線升級？


2、如何判斷升級是否成功？


3、升級出錯了會怎樣？軟件會報錯嗎？程序會退出嗎？能否繼續提供服務？


4、如果無法繼續提供服務，如何回滾？回滾的代價是多大？


5、各個階段分別是多長時間？
   
最最重要的一點：

6、演習沒有？ 中間遇到了什麼問題？演習的環境和線上環境有什麼區別？

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