Get IPs of EC2 Instances across AWS profiles

ec2ips

#!/bin/bash

# Required
# - awscli
# - jq


PROGNAME=$(basename $0)
export IDENTIFYING_TAG_NAME='Name'

usage() {
    echo "Usage: $PROGNAME [OPTIONS]"
    echo
    echo "Options:"
    echo "  -p, --profile ARG"
    echo "  -t, --tag-name ARG"
    echo "  -a, --all"
    echo "      --csv"
    echo
    exit 1
}

_ec2_ips() {
  aws ec2 describe-instances \
    | jq '{ Results: [
      .Reservations[].Instances[]
       | {
         Profile: env.AWS_PROFILE,
         InstanceId: .InstanceId,
         State: .State.Name,
         (env.IDENTIFYING_TAG_NAME): (.Tags | arrays | map(if .Key == env.IDENTIFYING_TAG_NAME then .Value else null end) | join("")),
         PrivateIp: ( [ .NetworkInterfaces[].PrivateIpAddresses[] | .PrivateIpAddress ] | join(",") ),
         PublicIp: ( [ .NetworkInterfaces[].PrivateIpAddresses[] | .Association.PublicIp ] | unique | join(",") )
       }
     ] }'
}

_ec2_ips_across_profiles() {
  PROFILES=$(cat ~/.aws/config | grep profile | sed -E 's/\[profile ([a-z0-9_-]+)\]/\1/')

  _tmp=''
  for profile in $PROFILES;
  do
    export AWS_PROFILE=$profile
    _tmp=$_tmp$(_ec2_ips)
  done
  echo $_tmp | jq -s '{ Results: ([ .[].Results ] | flatten) }'
}

# ref. https://qiita.com/b4b4r07/items/dcd6be0bb9c9185475bb
for OPT in "$@"
do
    case "$OPT" in
        '-h'|'--help' )
            usage
            exit 1
            ;;
        '-a'|'--all' )
            MODE='ALL'
            shift
            ;;
        '--csv' )
            FORMAT='CSV'
            shift
            ;;
        '-t'|'--tag-name' )
            if [[ -z "$2" ]] || [[ "$2" =~ ^-+ ]]; then
                echo "$PROGNAME: option requires an argument -- $1" 1>&2
                exit 1
            fi
            export IDENTIFYING_TAG_NAME="$2"
            shift 2
            ;;
        '-p'|'--profile' )
            if [[ -z "$2" ]] || [[ "$2" =~ ^-+ ]]; then
                echo "$PROGNAME: option requires an argument -- $1" 1>&2
                exit 1
            fi
            export AWS_PROFILE="$2"
            shift 2
            ;;
        -*)
            echo "$PROGNAME: illegal option -- '$(echo $1 | sed 's/^-*//')'" 1>&2
            exit 1
            ;;
    esac
done

case "$MODE" in
    'ALL' )
        _results=$(_ec2_ips_across_profiles)
        ;;
    *)
        _results=$(_ec2_ips)
        ;;
esac

case "$FORMAT" in
    'CSV' )
        echo "\"Profile\",\"InstanceId\",\"State\",\"$IDENTIFYING_TAG_NAME\",\"PrivateIp\",\"PublicIp\""
        echo $_results | jq -r '.Results[] | flatten | @csv'
        ;;
    *)
        echo $_results | jq
        ;;
esac