How to see all running Amazon EC2 instances across all regions?

Question

I switch instances between different regions frequently and sometimes I forget to turn off my running instance from a different region. I couldn\'t find any way to see all the r

Answer 1

I created an open-source script that helps you to list all AWS instances. https://github.com/Appnroll/aws-ec2-instances

That's a part of the script that lists the instances for one profile recording them into an postgreSQL database with using jq for json parsing:

DATABASE="aws_instances"
TABLE_NAME="aws_ec2"
SAVED_FIELDS="state, name, type, instance_id, public_ip, launch_time, region, profile, publicdnsname"
# collects the regions to display them in the end of script
REGIONS_WITH_INSTANCES=""

for region in `aws ec2 describe-regions --output text | cut -f3`
do
   # this mappping depends on describe-instances command output
   INSTANCE_ATTRIBUTES="{
        state: .State.Name,
        name: .KeyName, type: .InstanceType,
        instance_id: .InstanceId,
        public_ip: .NetworkInterfaces[0].Association.PublicIp,
        launch_time: .LaunchTime,
        \"region\": \"$region\",
        \"profile\": \"$AWS_PROFILE\",
        publicdnsname: .PublicDnsName
   }"

   echo -e "\nListing AWS EC2 Instances in region:'$region'..."
   JSON=".Reservations[] | ( .Instances[] | $INSTANCE_ATTRIBUTES)"
   INSTANCE_JSON=$(aws ec2 describe-instances --region $region)

   if echo $INSTANCE_JSON | jq empty; then
      # "Parsed JSON successfully and got something other than false/null"
      OUT="$(echo $INSTANCE_JSON | jq $JSON)"

      # check if empty
      if [[ ! -z "$OUT" ]] then
        for row in $(echo "${OUT}" | jq -c "." ); do
          psql -c "INSERT INTO $TABLE_NAME($SAVED_FIELDS) SELECT $SAVED_FIELDS from json_populate_record(NULL::$TABLE_NAME, '${row}') ON CONFLICT (instance_id)
            DO UPDATE
            SET state = EXCLUDED.state,
            name = EXCLUDED.name,
            type = EXCLUDED.type,
            launch_time = EXCLUDED.launch_time,
            public_ip = EXCLUDED.public_ip,
            profile = EXCLUDED.profile,
            region = EXCLUDED.region,
            publicdnsname = EXCLUDED.publicdnsname
            " -d $DATABASE
        done

        REGIONS_WITH_INSTANCES+="\n$region"
      else
        echo "No instances"
      fi
   else
        echo "Failed to parse JSON, or got false/null"
   fi
done