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keturn/ec2-ssh.sh

Last active February 9, 2016 00:46
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ssh to an AWS EC2 host by its group name.
Raw
ec2-ssh.sh
#!/bin/bash
# requires AWS CLI: https://aws.amazon.com/cli/
# and jq: https://stedolan.github.io/jq/
set -e
EC2_NAME="$1"
if [ -z "${EC2_NAME}" ] ; then
echo Usage: "$0" '<ec2-name> [ssh args ...]'
fi
shift
EC2_HOSTNAME=$(aws --output json ec2 describe-network-interfaces --filter "Name=group-name,Values=${EC2_NAME}" |
jq --raw-output --exit-status '.NetworkInterfaces[0].Association.PublicDnsName')
exec ssh "ec2-${EC2_NAME}" -o HostName="${EC2_HOSTNAME}" "$@"
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