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aerostitch/aws_elb_list_number_of_instances.sh

Last active June 10, 2022 22:14
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Lists all the ELB names and the number of instances attached to them
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aws_elb_list_number_of_instances.sh
aws elb describe-load-balancers --query 'LoadBalancerDescriptions[*].{name:LoadBalancerName,instances:Instances[*].InstanceId}' | jq '[.[] | {name: .name, inst: .instances | length}]'
# List only the empty ones:
aws elb describe-load-balancers --query 'LoadBalancerDescriptions[*].{name:LoadBalancerName,instances:Instances[*].InstanceId}' | jq '[.[] | if (.instances | length) <= 0 then {name: .name, number_of_instances: .instances | length} else empty end]'
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