节点进程结束后，Grunt（保持活动状态）没有退出

Question

Running "express-keepalive" task
[::ffff:xx.xx.xx.xx] CONNECTED
Caught exception: Error: connect ETIMEDOUT
Error: connect ETIMEDOUT
    at exports._errnoException (util.js:746:11)
    at TCPConnectWrap.afterConnect [as oncomplete] (net.js:983:19)

But even after this the grunt process keep running. I have set grunt serve:dist to run as an upstart job but it won't respawn till the grunt process ends. I am catching all process errors and making sure the node process exits.

process.on('uncaughtException', function(err) {
      console.log('Caught exception: ' + err);
      console.log(err.stack);
      process.exit(1);
});

A ps aux returns that there are no node process running.

Answer 1

From the node documentation on uncaughtException :

Note that uncaughtException is a very crude mechanism for exception handling.

Don't use it, use domains instead. If you do use it, restart your application after every unhandled exception!

Do not use it as the node.js equivalent of On Error Resume Next. An unhandled exception means your application - and by extension node.js itself - is in an undefined state. Blindly resuming means anything could happen.

Think of resuming as pulling the power cord when you are upgrading your system. Nine out of ten times nothing happens - but the 10th time, your system is bust.

You have been warned.