AWS SSH Key Init Script

gistfile1.sh

#!/bin/bash
#
# Init file for AWS Authorized Keyfile
#
# chkconfig: 2345 11 25
# description: AWS Authorized Keyfile

case $1 in
  start)
    touch /var/lock/subsys/awssshkey
    ;;
  stop)
    rm /var/lock/subsys/awssshkey
    exit 0
    ;;
esac

if [ ! -d /root/.ssh ]; then
    mkdir -m 0700 -p /root/.ssh
    restorecon /root/.ssh
fi
# Get the root ssh key setup
ReTry=0
rm -f /root/.ssh/authorized_keys
while [ ! -f /root/.ssh/authorized_keys ] && [ $ReTry -lt 5 ]; do
    sleep 2
    curl -f http://169.254.169.254/latest/meta-data/public-keys/0/openssh-key \
        > /root/.ssh/authorized_keys
    [ $? -eq 0 ] && echo "Added ssh keys $(< /root/.ssh/authorized_keys)"
    ReTry=$[Retry+1]
done
chmod 600 /root/.ssh/authorized_keys && restorecon /root/.ssh/authorized_keys

You really want -s not -f, since the first curl will write a zero byte file and then the if while will exit. Also, you probably want this to loop forever until it gets keys.