start an ssh tunnel to an ec2-instance given the name of the instance

start-tunnel.sh

#!/bin/bash

# need aws commandline interface installed (do "pip install awscli")
# need aws credentials set-up

# usage: start-tunnel.sh <INSTANCE-NAME>

instance_name=$1

key_name=$(aws ec2 \
                           describe-instances \
                           --profile personal \
                           --region us-west-2 \
                           --filters "Name=tag:Name,Values=${instance_name}" "Name=instance-state-name,Values=running" \
                           --query "Reservations[0].Instances[0].KeyName" \
                           --output text)

public_dns=$(aws ec2 \
                                 describe-instances \
                                 --profile personal \
                                 --region us-west-2 \
                                 --filters "Name=tag:Name,Values=${instance_name}" "Name=instance-state-name,Values=running" \
                                 --query "Reservations[0].Instances[0].PublicDnsName" \
                                 --output text)

ssh -N -f -L localhost:8888:localhost:8888 -i ~/.ssh/${key_name}.pem ubuntu@${public_dns}