You are working as a solution architect for a customer in Frankfurt, which uses multiple compute instance VMs spread among three Availability Domains in the Oracle Cloud Infrastructure (OCI) eu-frankfurt-1 region. The compute instances do not have public IP addresses and are running in private subnets inside a Virtual Cloud Network (VCN). You have set up OCI Autoscaling feature for the compute instances, but find out that instances cannot be auto scaled. You have enabled monitoring on the instances.
What could be wrong in this situation?
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You need to assign a reserved public IP address to the compute instances.
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You need to set up a Service Gateway to send metrics to the OCI Monitoring service.
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Autoscaling only works for instances with public IP addresses.
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Autoscaling only works with single availability domains.
