Small utility script to emit the public ip address of an AWS ECS service

ecs-host

#!/bin/bash
#
# Usage: ./ecs-host profile-name cluster-name service-name
#

display_usage() { 
	echo "Retrieve ip address for service name." 
	echo -e "\nusage: `basename $0` profile-name cluster-name service-name" 
}

# if less than two arguments supplied, display usage 
if [  $# -le 1 ] 
then 
	display_usage
	exit 1
fi 
 
# check whether user had supplied -h or --help . If yes display usage 
if [[ ( $# == "--help") ||  $# == "-h" ]] 
then 
	display_usage
	exit 0
fi 

# Script
profile=$1
cluster=$2
service_name=$3

containerInstanceArn=$((aws ecs list-tasks --profile=$profile --cluster=$cluster --query=taskArns --output text | xargs aws ecs describe-tasks --profile=$profile --cluster=$cluster --query "tasks[]" --tasks) | jq -r ".[] | select(.containers[].name | contains(\"${service_name}\")) | .containerInstanceArn")
ec2InstanceId=$(aws ecs describe-container-instances --profile=$profile --cluster=$cluster --container-instances=$containerInstanceArn | jq -r '.containerInstances[].ec2InstanceId')

aws ec2 describe-instances --profile=$profile --instance=$ec2InstanceId | jq -r ".Reservations[].Instances[].NetworkInterfaces[].Association.PublicIp"

Moved to https://github.com/bfolkens/ecs-tools