Lifecycle hooks?enable you to perform custom actions by pausing instances as an Auto Scaling group launches or terminates them. For example, while your newly launched instance is paused, you could install or configure software on it.

AS在拉起一個新的實例時候，ELB如何判斷何時可以承接業(yè)務(wù)流量處理？根據(jù)AMI創(chuàng)建實例完成，但有時候還需要有一些客戶化的應(yīng)用進行安裝和配置，這個時候就需要AS的生命周期Hook了。