nginx listens on multiple ports 80 and 81

Configure two servers in nginx.conf:

<code>http {
    include       mime.types;
    default_type  application/octet-stream;

    sendfile        on; 

    keepalive_timeout  <span>65</span>; 

    gzip  on;

    upstream localhost {
        <span>server</span><span>127.0</span><span>.0</span><span>.1</span>:<span>8080</span> max_fails=<span>7</span> fail_timeout=<span>7</span>s;
    }   
    <span>server</span> {
        listen       <span>81</span>; 
        server_name  localhost;
        location / { 
            root html;
            <span>index</span><span>index</span>.html <span>index</span>.htm;
            proxy_pass http:<span>//localhost;</span>
        }   
    }   
    <span>server</span> {
        listen       <span>80</span>; 
        server_name  localhost;

        <span>#charset koi8-r;</span><span>#access_log  logs/host.access.log  main;</span>        location / { 
            root   html;
            <span>index</span><span>index</span>.html <span>index</span>.htm;
            proxy_pass http:<span>//localhost;</span>
        }
    }
}</code>

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The above introduces nginx to monitor multiple ports 80 and 81, including the relevant content. I hope it will be helpful to friends who are interested in PHP tutorials.