Wrapper to search EC2 machines by name tag. Shows only running instances.

gistfile1.sh

#!/usr/bin/env bash

if [ -z "$EC2_PRIVATE_KEY" ]; then
   echo "EC2_PRIVATE_KEY is not defined"
   exit 1
fi

if [ -z "$EC2_CERT" ]; then
   echo "EC2_CERT is not defined"
   exit 1
fi

OUTPUT=`ec2din --show-empty-fields --headers --filter="instance-state-name=running" --filter="tag:Name=$1"`

IFS=$'\n'$'\r'

INSTANCE_LINES=( $(echo "$OUTPUT"|grep "^INST"|cut -f 2,4,5,10,12) )
NAME_LINES=( $(echo "$OUTPUT"|grep "^TAG"|grep "Name"|cut -f 3,5) )

IFS=$'\t'
{
echo -e "name\tinstance-id\tpublic-dns\tprivate-dns\ttype\tAZ"
for (( i=0; i<${#INSTANCE_LINES[*]}; i++ ))
do
    # 0 - instance id
    # 1 - public dns
    # 2 - internal dns
    # 3 - type
    # 4 - AZ
    INSTANCE_DETAILS=( ${INSTANCE_LINES[i]} )

    # 0 - instance id
    # 1 - name tag
    NAME_DETAILS=( ${NAME_LINES[i]} )

    # validate that it's the same instance?

    echo -e "${NAME_DETAILS[1]}\t${INSTANCE_DETAILS[0]}\t${INSTANCE_DETAILS[1]}\t${INSTANCE_DETAILS[2]}\t${INSTANCE_DETAILS[3]}\t${INSTANCE_DETAILS[4]}"
done;
} | column -t