mongo upstart script with separate data partition

# Ubuntu upstart file at /etc/init/mongodb.conf

pre-start script
    mkdir -p /MongoData/data
    mkdir -p /MongoData/log
    ln -s /MongoData/data/ /var/lib/mongodb/
    ln -s /MongoData/log/ /var/log/mongodb/
end script

start on runlevel [2345]
stop on runlevel [06]

script
  ENABLE_MONGODB="yes"
  if [ -f /etc/default/mongodb ]; then . /etc/default/mongodb; fi
  if [ "x$ENABLE_MONGODB" = "xyes" ]; then
        if [ -f /var/lib/mongodb/mongod.lock ]; then
                rm /var/lib/mongodb/mongod.lock
                sudo -u mongodb /usr/bin/mongod --config /etc/mongodb.conf --repair
        fi
        exec start-stop-daemon --start --quiet --chuid mongodb --exec  /usr/bin/mongod -- --config /etc/mongodb.conf
  fi
end script