After implementing ELB and Autoscalling on Amazon AWS. There's a wierd issue happens and we don't know either the reason or the fix.
We installed Auto Scalling configuration to add instance of AMI ID of Windows 2008 R2 x64, SQL Express and IIS.
We also let the ELB to check health on "/", normal configuration and supposed that the IIS is running normally.
But as soon as the instance started, it is shown as "Out Of Service" at ELB.
Status turns into "In Service" suddenly after sometime.
What's the reason for such issue?
Is it possible to make it available in no time? "As for sure when instance is started it's needed to be load balanced istantly"