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|
#!/bin/sh
### BEGIN INIT INFO
# Provides: ec2-init
# Required-Start: $network $local_fs $ssh
# Required-Stop:
# Should-Start: $named
# Should-Stop:
# Default-Start: S
# Default-Stop: 1
# Short-Description: Initialises system for use on Amazon EC2
# Description: Fetches login credentials and handles various quirks
### END INIT INFO
PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
NAME=ec2-init
. /lib/lsb/init-functions
if [ ! -d /var/ec2 ]; then
mkdir /var/ec2
fi
run_once() {
per_id=$1
action_id=$2
semaphore="/var/lib/ec2/$action_id.$per_id"
if ! [ -e "$semaphore" ]
then
touch "$semaphore"
return 0
fi
return 1
}
run_once_per_instance() {
action_id=$1
instance=`ec2-get-data --instance-id | cut -f2 -d\ `
run_once $instance $action_id
}
run_once_per_ami() {
action_id=$1
ami=`ec2-get-data --ami-id | cut -f2 -d\ `
run_once $ami $action_id
}
run_once_ever() {
action_id=$1
run_once ever $action_id
}
regenerate_ssh_host_keys() {
rm -f /etc/ssh/ssh_host_*_key*
ssh-keygen -f /etc/ssh/ssh_host_rsa_key -t rsa -N '' | logger -s -t "ec2"
ssh-keygen -f /etc/ssh/ssh_host_dsa_key -t dsa -N '' | logger -s -t "ec2"
# This allows user to get host keys securely through console log
echo | logger -s -t "ec2"
echo | logger -s -t "ec2"
echo "#############################################################" | logger -s -t "ec2"
echo "-----BEGIN SSH HOST KEY FINGERPRINTS-----" | logger -s -t "ec2"
ssh-keygen -l -f /etc/ssh/ssh_host_rsa_key.pub | logger -s -t "ec2"
ssh-keygen -l -f /etc/ssh/ssh_host_dsa_key.pub | logger -s -t "ec2"
echo "-----END SSH HOST KEY FINGERPRINTS-----" | logger -s -t "ec2"
echo "#############################################################" | logger -s -t "ec2"
}
case "$1" in
start)
log_daemon_msg "Waiting for EC2 meta-data service"
if ec2-wait-for-meta-data-service
then
log_end_msg 0
else
log_end_msg 1
exit 1
fi
if run_once_per_ami ssh_host_key_regeneration
then
regenerate_ssh_host_keys
fi
update-motd
if run_once_ever ec2-defaults
then
log_daemon_msg "Setting EC2 defaults"
if ec2-set-defaults 2> /dev/null
then
log_end_msg 0
else
log_end_msg 1
fi
fi
if run_once_ever ssh_authorized_keys
then
log_daemon_msg "Fetching EC2 SSH keys"
if ec2-fetch-credentials 2> /dev/null
then
log_end_msg 0
else
log_end_msg 1
fi
fi
log_daemon_msg "Setting hostname to EC2 localhostname"
if ec2-set-hostname 2> /dev/null
then
log_end_msg 0
else
log_end_msg 1
fi
if run_once_ever apt_source_list
then
log_daemon_msg "Creating /etc/apt/sources.list"
if ec2-set-apt-sources 2> /dev/null
then
log_end_msg 0
else
log_end_msg 1
fi
fi
if run_once_per_instance user-data
then
log_daemon_msg "Running EC2 user data"
if ec2-run-user-data 2>&1 | logger -t "user-data"
then
log_end_msg 0
else
log_end_msg 1
fi
fi
;;
stop)
exit 0
;;
restart|force-reload)
exec $0 start
;;
*)
N=/etc/init.d/$NAME
echo "Usage: $N {start|stop|force-stop|restart|force-reload|status}" >&2
exit 1
;;
esac
exit 0
|
