/usr/bin/ec2_remove_workers is in coop-computing-tools 4.0-1ubuntu1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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show_help()
{
echo "Use: ec2_remove_workers [options] <num_workers>"
echo "where options are:"
echo " -a Remove all running workers (EC2 instances)."
echo " -i <image_id> EC2 OS image ID of running workers. Default = ami-fa01f193."
echo " -r <reservation_id> Restrict removed instances to this reservation ID."
echo " -h Show this help message."
exit 1
}
remove_all=0
image=ami-fa01f193
reservation=
while getopts i:r:ah opt
do
case "$opt" in
a) remove_all=1;;
i) image="$OPTARG";;
r) reservation="$OPTARG";;
h) show_help;;
\?) show_help;;
esac
done
shift $(expr $OPTIND - 1)
if [ $remove_all = 0 ]; then
if [ X$1 = X ]
then
show_help
fi
count=$1
fi
ec2remove=`which ec2kill 2>/dev/null`
if [ $? != 0 ]
then
echo "$0: please add 'ec2kill' to your PATH."
exit 1
fi
if [ $reservation ]
then
running_instances=$(ec2-describe-instances -F "reservation-id"=$reservation | grep running | wc -l)
else
running_instances=$(ec2-describe-instances -F "image-id"=$image | grep running | wc -l)
fi
if [ ! -n "$running_instances" ];
then
echo "No workers to remove."
exit 1
fi
if [ $remove_all = 1 ];
then
num_remove_instances=$running_instances
else
num_remove_instances=$count
fi
for (( i=1; i<=$num_remove_instances; i++ ))
do
if [ $reservation ]
then
instance=$(ec2-describe-instances -F "reservation-id"=$reservation | grep running | awk 'NR==1{print $2}')
else
instance=$(ec2-describe-instances -F "image-id"=$image | grep running | awk 'NR==1{print $2}')
fi
if [ -n "$instance" ];
then
$ec2remove $instance
return_status=$?
fi
done
exit $return_status
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