问题描述
我运行Debian的在Amazon EC2上安装了Node.js的一个实例。如果我运行下面的code:
I'm running an instance of Debian on Amazon EC2 with Node.js installed. If I run the code below:
http = require('http');
http.createServer(function (request, response){
response.writeHead(200, {'Content-Type':'text/plain'});
response.end('Hello World\n');
}).listen(80);
console.log("Running server at port 80");
我得到下面还告诉我,输出有另一个进程监听80端口:
I get the output below which tells me there's another process listening at port 80:
Running server at port 80
events.js:72
throw er; // Unhandled 'error' event
^
Error: listen EACCES
at errnoException (net.js:901:11)
at Server._listen2 (net.js:1020:19)
at listen (net.js:1061:10)
at Server.listen (net.js:1127:5)
at Object.<anonymous> (/home/admin/nodetests/nodetest.js:6:4)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
at Function.Module.runMain (module.js:497:10)
现在,当我检查,看看是否有一个过程(作为root用户在任何情况下是隐藏的)使用的80端口监听:
Now when I check to see if there's a process (as root in case anything is hidden) listening on port 80 using:
netstat -tupln
我得到了下面的输出,它告诉我那里有没有监听80端口:
I get the below output, which tells me theres nothing listening at port 80:
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 1667/sshd
tcp6 0 0 :::22 :::* LISTEN 1667/sshd
我应该注意到,Debian有80端口开放为入站规则,如果有差别。
I should note that the debian has port 80 open as an inbound rule if that makes a difference.
我的问题是:我究竟做错了什么?为什么我不能识别的过程中监听80端口?为什么在Debian的封锁?我应该采取什么步骤来获得code正常运行?
My question is: What am I doing wrong? How come I can't identify the process listening to port 80? Why is it blocked in Debian? What steps should I take to get the code running correctly?
推荐答案
错误code EACCES
意味着你没有适当的权限来运行应用程序端口。在Linux系统中,1024以下的任何端口需要root访问权限。
The error code EACCES
means you don't have proper permissions to run applications on that port. On Linux systems, any port below 1024 requires root access.
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