mininet/util/m at devel/clusterdemo · jovinho/mininet

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#!/bin/bash

# Attach to a Mininet host and run a command

if [ -z $1 ]; then

echo "usage: $0 host cmd [args...]"

exit 1

else

host=$1

pid=`ps ax | grep "mininet:$host$" | grep bash | grep -v mnexec | awk '{print $1};'`

if echo $pid | grep -q ' '; then

echo "Error: found multiple mininet:$host processes"

exit 2

if [ "$pid" == "" ]; then

echo "Could not find Mininet host $host"

exit 3

if [ -z $2 ]; then

cmd='bash'

else

shift

cmd=$*

cgroup=/sys/fs/cgroup/cpu/$host

if [ -d "$cgroup" ]; then

cg="-g $host"

# Check whether host should be running in a chroot dir

rootdir="/var/run/mn/$host/root"

if [ -d $rootdir -a -x $rootdir/bin/bash ]; then

cmd="'cd `pwd`; exec $cmd'"

cmd="chroot $rootdir /bin/bash -c $cmd"

cmd="exec sudo -E mnexec $cg -a $pid $cmd"

eval $cmd