<p><span style="font-size:16px"><strong>1.&nbsp;</strong><strong>Is AS required to be used with ELB?</strong></span></p> <p>Not necessarily. AS can independently add and remove ECS instances. It can be used with and without ELB. However, AS being used with ELB will facilitate to extend the service capability of applications and enhance their availability.</p> <p>&nbsp;</p> <p><span style="font-size:16px"><strong>2.&nbsp;Is AS charged any fees? </strong></span></p> <p>AS itself is free, but other resources created by scaling activities such as ECS instances, ELB and disk are charged by usage.</p> <p>&nbsp;</p> <p><span style="font-size:16px"><strong>3.&nbsp;Are there any restrictions on using auto scaling group?</strong></span></p> <p>&bull;&nbsp;&nbsp;&nbsp;&nbsp; The maximum value of Min Instance Number of an auto scaling group is 10.</p> <p>&bull;&nbsp;&nbsp;&nbsp;&nbsp; The maximum value of Max Instance Number of an auto scaling group is 20.</p> <p>&bull;&nbsp;&nbsp;&nbsp;&nbsp; The number of auto scaling groups used by each user is 5.</p> <p>&bull;&nbsp;&nbsp;&nbsp;&nbsp; The number of auto scaling group Rules used by each user is 10.</p> <p>&bull;&nbsp;&nbsp;&nbsp;&nbsp; The number of timing tasks used by each user is 10.</p> <p>&bull;&nbsp;&nbsp;&nbsp;&nbsp; The number of warning tasks used by each user is 10.</p> <p>&nbsp;</p> <p><span style="font-size:16px"><strong>4.&nbsp;Is there any note for image creating?</strong></span></p> <p>The application must be set as autostart and manually deploy, to verify if system parameter and application is normal after the image is created.</p> <p>&nbsp;</p> <p><span style="font-size:16px"><strong>5.&nbsp;When the Scaling Group is in the status of Stopped, why is the Start button in gray?</strong></span></p> <p>the auto scaling group is in the status of stopped by default after being created and needs to be configured before starting.</p> <p>&nbsp;</p> <p><span style="font-size:16px"><strong>6.&nbsp;How to prevent ECS in the auto scaling group from being automatically removed?</strong></span></p> <p>You can set protection status for one or multiple instances in the auto scaling group. When automatic removing activities are conducted in the auto scaling group, instances set with protection status will not be removed out of the auto scaling group.</p>