Look up an EC2 Instance by public IP across more than one region

ec2-instance-query.zsh

# This is the function I created that's a wee bit less shitty than the file above.  I created a file called (oddly enough)
# ec2-instance-query.zsh and put it in my ~/.oh-my-zsh/custom directory.  After sourcing my ~/zshrc, I have a fancy-pants
# function for querying EC2 instances and ElasticIP addresses for a given IP:
function ec2-instance-query() {
    echo "Finding EC2 information for IP $1:"
    for r in `aws ec2 describe-regions --output text | cut -f4 | grep "us-"`
    do
        aws ec2 describe-instances \
            --region $r \
            --filter "Name=network-interface.addresses.association.public-ip, Values=$1" \
            --query 'Reservations[].Instances[].{ commonName: Tags[?Key == `Name`]|[0].Value, instanceId: InstanceId, privateIp: PrivateIpAddress, publicIp: PublicIpAddress, zone: Placement.AvailabilityZone, status: State.Name, startedAt: LaunchTime, keyPair: KeyName }' \
            --output table

        aws ec2 describe-addresses \
            --region $r \
            --public-ips $1 \
            --query 'Addresses[].{ instanceId: InstanceId, publicIp: PublicIp, privateIp: PrivateIp, allocationId: AllocationId, associationId: AssociationId, zone: NetworkBorderGroup }' \
            --output table 2> /dev/null # suppress the "Address not found" error (and...well... anything else, really)
    done
}

get-ec2-instances-multi-region.sh

# According to a brief search on the interwebs, it isn't possible to query for EC2 instances across multiple regions;
# you have to query against each region separately.  This is an INCREDIBLY quick and dirty command for using the aws cli
# to look up an EC2 instance by public IP in two different regions.  Eventually this will get put into something more
# robust, but for now here it is:

# Set the public IP address to something:
export IP=<the public IP address you're looking for>

# Run describe-instances against the us-west-2 and us-east-2 region and fetch some basic information:
aws ec2 describe-instances \
    --region us-west-2 \
    --filter "Name=network-interface.addresses.association.public-ip, Values=${IP}" \
    --query 'Reservations[].Instances[].{ commonName: Tags[?Key == `Name`]|[0].Value, privateIp: PrivateIpAddress, publicIp: PublicIpAddress, zone: Placement.AvailabilityZone, status: State.Name, startedAt: LaunchTime, keyPair: KeyName }' \
    --output table \
&& \
aws ec2 describe-instances \
    --region us-east-2 \
    --filter "Name=network-interface.addresses.association.public-ip, Values=${IP}" \
    --query 'Reservations[].Instances[].{ commonName: Tags[?Key == `Name`]|[0].Value, privateIp: PrivateIpAddress, publicIp: PublicIpAddress, zone: Placement.AvailabilityZone, status: State.Name, startedAt: LaunchTime, keyPair: KeyName }' \
    --output table