Spot Instance requests are subject to the following limits:
If you submit a Spot Instance request and you receive the error
Max spot instance count
exceeded, your account has exceeded either its overall limit for the region, or the limit
for the specific instance type for the region. To submit a limit increase request, go to
AWS Support Center and complete the request
form. In the Use Case Description field, indicate that you are requesting
an increase to the request limit for Spot Instances.
The overall limit applies to active or open Spot Instance requests. If you terminate your Spot Instance but do not cancel the request, your overall limit can include the request until the Spot service detects the termination and closes your request.
The following table lists the overall request limit for Spot Instances. Note that new AWS accounts might have lower limits.
The total number of Spot Instance requests
20 per region
The following instance types are not supported for Spot:
Some Spot Instance types aren't available in every region. To view the supported instance types for a region, go to Spot Instance Pricing and select the region from the Region list.
The bid price limit is designed to protect you from incurring unexpected charges.
The following table lists the bid price limit for Spot Instances.
Ten times the On-Demand price