英文:
How do I fix Azure App Service Erroring on Port 80?
问题
I'm an Azure App Service noob - I thought it would be pretty much turnkey, but I'm having some port issues it looks like. I've deployed a Node/Express web app to App Service...
当我在我的 Node/Express 应用中指定端口为 80 并部署时，我无法访问网站。当我进入控制台并运行 node app.js 时，我收到错误消息 "Error: listen eacces: permission denied 0.0.0.0:80"
当我使用端口 3000 时，我收到一个错误，指出另一个应用正在监听端口 3000。
我是否指定了错误的端口？文档似乎说 80 是 Azure App Service 中要使用的两个端口之一。如何修复此错误或应使用哪个正确的端口？
谢谢
Edit: 这在 Azure App Service 中的 Windows 上运行
英文:
I'm an Azure App Service noob - I thought it would be pretty much turnkey, but I'm having some port issues it looks like. I've deployed a Node/Express web app to App Service...
When I designate the port to 80 in my Node/Express app and deploy, I can't reach the website. When I go into console and node app.js, I get the error "Error: listen eacces: permission denied 0.0.0.0:80"
When I've used 3000, I get an error that states something else is listening on 3000.
Am I designating incorrect ports? Documentation seems to say that 80 is one of two ports to use with Azure App Service. How do I fix this error or what is the correct port to use?
Thank you
Edit: This running on Windows inside of Azure App Service
答案1
得分: 1
当我进入控制台并运行node app.js时，我收到错误消息"Error: listen eacces: permission denied 0.0.0.0:80"。
这个错误表示应用程序试图在端口80上进行监听，这需要提升的权限。
- 在Azure应用服务中，应该使用PORT环境变量提供的端口。
- 可以在生成的Express应用程序的脚本bin/www中找到这个环境变量，如下所示：
var port = normalizePort(process.env.PORT || '3000');
app.set('port', port);
要解决这个问题，你可以将Node/Express应用程序中的端口更改为使用PORT环境变量。
你还可以运行以下命令来检查是否有另一个进程在端口3000上运行，如SO中所述：
netstat -ano | findstr :3000------> 检查是否有任何进程在运行
tskill <Process_ID>------> 杀死该进程
如果在端口3000上有另一个进程在运行，你可以要么停止该进程，要么在Node/Express应用程序中使用不同的端口。
我已经创建了一个示例的Node.js/Express.js应用程序来在我的环境中进行检查。
服务器代码：
var express = require('express');
var app = express();
app.get('/', function (req, res) {
res.send('Hello World!');
});
var port = process.env.PORT || 3000;
app.listen(port, function () {
console.log('Example app listening on port ' + port + '!');
});
结果：
在端口80上运行应用程序：
在端口3000上运行应用程序：
门户：
英文:
>When I go into console and node app.js, I get the error "Error: listen eacces: permission denied 0.0.0.0:80"
The error indicates that the app is trying to listen on port 80, which requires elevated privileges.
- In Azure App Service, the port provided by the PORT environment variable should be used.
- This environment variable can be found in the script bin/www in your generated Express app as shown below:
var port = normalizePort(process.env.PORT || '3000');
app.set('port', port);
To fix the issue, you can change the port in your Node/Express app to use the PORT environment variable.
You can also check if there is another process running on port 3000 by running the below command as mentioned in SO:
netstat -ano | findstr :3000------> To check if any process running
tskill <Process_ID>------>to kill the process
If there is another process running on port 3000, you can either stop that process or use a different port in your Node/Express app.
I have created a sample nodejs/expressjs application to check in my environment.
Server code:
var express = require('express');
var app = express();
app.get('/', function (req, res) {
res.send('Hello World!');
});
var port = process.env.PORT || 3000;
app.listen(port, function () {
console.log('Example app listening on port ' + port + '!');
});
Result:
Running the app in port 80:
Running the app in port 3000:
Portal:
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