Google App Engine Node.js应用程序不健康 [英] Google App Engine Node.js Application Unhealthy

问题描述

我试图在谷歌应用程序引擎上测试一个相当直接的node.js应用程序。如下所示，它所要做的就是收听Firebase数据库中的更改，然后向用户发送GCM消息：

  var Firebase = require（firebase）; 
 var gcm = require（'node-gcm'）; 
 
 //创建对推送通知队列的引用
 var ref = new Firebase（firebaseDB）; 
 
 var message = new gcm.Message（）; 
 
 var regTokens = ['用户GCM reg令牌']; 
 
 //设置发件人A​​PI key 
 var sender = new gcm.Sender（'GCM sender ID'）; 
 
 message.addData（'syncNewData'，'Hello Member！'）; 
 $ b ref.on（value，function（snapshot）{
 
 //现在发送者可以用来发送消息
 sender.send（message， {registrationTokens：regTokens}，function（err，response）{
 if（err）console.error（err）; $ b $ else console.log（response）; 
}）; 
 
 console.log（snapshot.val（））; 
}，function（errorObject）{
 console.log（The read failed：+ errorObject.code）; 
}）; 
  

但是，每次我尝试部署到应用程序引擎时，该过程都会平稳运行，直到更新模块[默认] ... / ，运行几分钟，出现错误：

 错误：（gcloud.preview.app.deploy）错误响应：[13]启动
个虚拟机时超时。应用程序代码可能不健康。 （准备好0/2，仍然需要
部署）。 
  

我对node.js以及appengine相当陌生，但我只是试图测试确保所有组件一起工作。

为什么会出现这个错误？

解决方案

在App Engine中运行时，您在应用程序启动期间发生崩溃。我们今天在部署期间并不擅长处理这类崩溃（正在开展这方面的工作）。要查看发生了什么：

1. 转到
   
   
   3. 查找 crash.log 或 stderr ：
   
   
   
   
   <这就是你通常会发现问题的地方。希望这有助于！
   
   

   I am attempting to test a fairly straightforward node.js app on google app engine. As seen below, all it is intended to do is listen to a change in a Firebase database, and subsequently send a GCM message to a user:

   var Firebase = require("firebase");
   var gcm = require('node-gcm');
   
   // Create a reference to the push notification queue
   var ref = new Firebase("firebaseDB");
   
   var message = new gcm.Message();
   
   var regTokens = ['A user GCM reg token'];
   
   // Set up the sender with you API key
   var sender = new gcm.Sender('GCM sender ID');
   
   message.addData('syncNewData', 'Hello Member!');
   
   ref.on("value", function(snapshot) {
   
       // Now the sender can be used to send messages
       sender.send(message, { registrationTokens: regTokens }, function (err, response) {
           if(err) console.error(err);
           else    console.log(response);
       });
   
     console.log(snapshot.val());
   }, function (errorObject) {
     console.log("The read failed: " + errorObject.code);
   });
   

   However, every time I attempt to deploy to the app engine, the process runs smoothly until Updating module [default].../, running for several minutes, whereby the error appears:

   ERROR: (gcloud.preview.app.deploy) Error Response: [13] Timed out when starting
   VMs.  It's possible that the application code is unhealthy.  (0/2 ready, 2 still
    deploying).
   

   I am fairly new to node.js as well as appengine, but I am simply attempting to test to ensure all components work together.

   Why would this error exist?

   解决方案

   This almost always means you have a crash during app startup when running in App Engine. We're not very good at surfacing these kinds of crashes today during deployment (working on that). To see what's going on:

   1. Go to the developers console
   2. Click on cloud logging
   3. Look for a crash.log or stderr:

   That's where you'll usually find the problem. Hope this helps!

   这篇关于Google App Engine Node.js应用程序不健康的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！