前端和后端服务器（托管在单独的AWS实例上）无法通信
[英]Frontend and backend servers (hosted on separate aws instances) can't communicate
问题描述
My two ec2 instances are on the same subnet and I have configured the security group such that they can communicate with each other (pinging each others private ip adresses and connecting via telnet). 
我的两个ec2实例位于同一子网上，并且我已经配置了安全组，以使它们可以彼此通信（彼此ping私有IP地址并通过telnet连接）。
The frontend instance is hosting an angular app on nginx, the backend instance is hosting a spring boot app. 前端实例在nginx上托管有角度的应用程序，后端实例在托管spring boot应用程序。 The angular app makes http requests to the spring boot app and shows the results. angular应用程序向spring boot应用程序发出http请求，并显示结果。 Pretty simple stuff. 很简单的东西。 Now when I made the http requests to go to the public ip address of the backend instance everything worked great. 现在，当我发出http请求以转到后端实例的公共ip地址时，一切正常。 When I changed them to go to the private ip address it stopped working and I'm getting request timeouts. 当我将它们更改为私有IP地址时，它停止工作，并且出现请求超时。 Why is this happening? 为什么会这样呢？ I can clearly access the private ip address via telnet but angular cannot. 我可以通过telnet清楚地访问私有IP地址，但是angular不能。
1 个解决方案
解决方案1
0 2019-09-05 11:16:11
Your Angular application runs on client's browser. 您的Angular应用程序在客户端的浏览器上运行。 Request to backend app is made from the client's browser which cannot access the backend instance by Private IP. 从客户端的浏览器发出对后端应用程序的请求，该浏览器无法通过私有IP访问后端实例。
声明:本站的技术帖子网页，遵循CC BY-SA 4.0协议，如果您需要转载，请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.