在Ubuntu上永远使用nodejs的简单upstart脚本

我正在使用Ubuntu Sever 12.04.我有一个nodejs应用程序,我想这样运行：

NODE_ENV=production PORT=3001 APP_PATH=/var/www/myapp forever -a -l /var/www/myapp/forever.log -o /var/www/myapp/out.log -e /var/www/myapp/err.log /var/www/myapp/app.js

我想在系统启动时运行它,并在系统关闭时“永远停止”.我已经读过,首选方法是使用upstart脚本.这就是我尝试过的：

description "Upstart script"

start on startup
stop on shutdown

expect fork

env MYAPP_PATH="/var/www/myapp"

script

    NODE_ENV=production PORT=3001 APP_PATH=$MYAPP_PATH exec forever -a -l $MYAPP_PATH/forever.log -o $MYAPP_PATH/out.log -e $MYAPP_PATH/err.log  $MYAPP_PATH/app.js

end script

pre-stop script

    exec forever stop $MYAPP_PATH/app.js >> $LOG

end script

它在我运行时挂起,然后它表示作业已经在运行(实际上并非如此).

任何建议如何正确地做到这一点表示赞赏.谢谢！

description "Upstart script"

start on filesystem and started networking

仅供参考：don’t use “start on startup”.

stop on shutdown

expect fork

# Let's make sure we always have the right directory
chdir /var/www/myapp

env MYAPP_PATH="/var/www/myapp"
env NODE_ENV=production
env PORT=3001
# Is there a reason you didn't do this?
env APP_PATH=$MYAPP_PATH

script
  # Shell trick to re-direct this script's STDOUT/STDERR
  exec 2>> forever.log 1>> forever.log
  # You forgot the 'start' command. Without it,it doesn't fork.
  exec forever start -a -l forever.log -o out.log -e err.log app.js
end script

pre-stop script
  # Shell trick to re-direct this script's STDOUT/STDERR
  exec 2>> forever.log 1>> forever.log
  exec forever stop app.js
end script