push-ssh-key-to-aws.sh

#!/usr/bin/env bash

set -e

# Push local ssh key to every region in AWS using AWS CLI

# CHECK DEPENDENCY
if ! aws --version 2&> /dev/null; then
  echo "aborting - aws cli not installed and required"
  exit 1
fi

# Set aws_keypair_name to the EC2 key-name in each AWS Region
#   it must be unique in each region within your account
aws_keypair_name="${1:-$USER}"  # use 1st param or current user
# path of PUBLIC ssh key to push to AWS
publickeyfile="$HOME/.ssh/id_rsa.pub"

keydata=$(cat $publickeyfile | base64)

regions=$(aws ec2 describe-regions \
  --output text \
  --query 'Regions[*].RegionName')

for region in $regions; do
  echo $region
  aws ec2 import-key-pair \
    --region "$region" \
    --key-name "$aws_keypair_name" \
    --public-key-material "$keydata"
done