I am running java process inside ecs fargate containers and have set-up auto scaling to scale-out when memory utilization is above 60% and scale-in accordingly. This setup is working fine but i am not able to figure out the criteria based upon which ecs determines which tasks it should shutdown as part of the scale-in events i.e how does it distinguishes between different tasks and picks one to shutdown ? Does it check if there any active requests on the tasks or not and then if there are multiple such tasks then picks randomly ?
CodePudding user response：
There is a years long open issue about that on github:
From the issue and its comments you can infer the following:
Does it check if there any active requests on the tasks
No.
if there are multiple such tasks then picks randomly ?
Its random.