Use AWS CLI Tools to allow ssh into EC2 instance via their name tag. See http://blog.ryanparman.com/2014/01/29/easily-ssh-into-amazon-ec2-instances-using-the-name-tag/

add-to-bash-profile

# Install AWS CLI tools, https://github.com/aws/aws-cli/ 
# Add these functions to ~/.bash_profile or ~/.profile
# Modify to fit specific needs such as adding a bastion proxy option.
#
# Usage examples:
# $ hostname_from_instance <instance-name>
# $ ip_from_instance <instance-name>
# $ ssh-aws <instance-name>
#

function hostname_from_instance() {
  echo $(aws ec2 describe-instances --filters "{\"Name\":\"tag:Name\", \"Values\":[\"$1\"]}" --query='Reservations[0].Instances[0].PublicDnsName' | tr -d '"')
}

function ip_from_instance() {
  echo $(aws ec2 describe-instances --filters "{\"Name\":\"tag:Name\", \"Values\":[\"$1\"]}" --query='Reservations[0].Instances[0].PublicIpAddress' | tr -d '"')
}

function ssh-aws() {
  ssh -i ~/.ssh/your-keypair.pem ec2-user@$(ip_from_instance "$1")
}