How to describe instances from all regions using AWS CLI
for region in `aws ec2 describe-regions --output text | cut -f3`
do
echo -e "nListing Instances in region:'$region'..."
aws ec2 describe-instances --region $region
done
As of Today (30-01-2017), You will get list of instances frombelow 14 regions are available in AWS
ap-south-1
eu-west-2
eu-west-1
ap-northeast-2
ap-northeast-1
sa-east-1
ca-central-1
ap-southeast-1
ap-southeast-2
eu-central-1
us-east-1
us-east-2
us-west-1
us-west-2