摘要：通過命令行登陸阿里云服務器下載源碼包進入下載路徑其中文件是軟件的自動腳本程序。運行自動腳本會完成兩項工作一是檢查環境，根據環境檢查結果生成代碼二是生成編譯代碼需要的文件。在服務器啟動注意監聽的端口與配置的要一致。

0.通過ssh命令行登陸阿里云服務器

ssh root@your_ip_address

1.下載源碼包

 wget http://nginx.org/download/nginx-1.9.10.tar.gz

2.進入下載路徑

$ ./configure
$ make
$ make install

其中configure文件是Nginx軟件的自動腳本程序。運行configure自動腳本會完成兩項工作：

一是檢查環境，根據環境檢查結果生成C代碼；
二是生成編譯代碼需要的Makefile文件。

安裝后程序在usr/local下面，執行

$ ./sbin/nginx

可以使用Linux自帶的ps工具

ps -ef | grep nginx

root     14358     1  0 11:20 ?        00:00:00 nginx: master process ./sbin/nginx
nobody   14359 14358  0 11:20 ?        00:00:00 nginx: worker process
nobody   14360 14358  0 11:20 ?        00:00:00 nginx: worker process
nobody   14361 14358  0 11:20 ?        00:00:00 nginx: worker process
root     14433 14278  0 12:32 pts/1    00:00:00 grep --color=auto nginx

顯示啟動成功，包括一個主線程和三個worker線程。

下面是整個nginx.conf配置文件

#user  nobody;
worker_processes  3;
.
#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid        logs/nginx.pid;


events {
    worker_connections  1024;
}


http {
    include       mime.types;
    default_type  application/octet-stream;
    #log_format  main  "$remote_addr - $remote_user [$time_local] "$request" "
    #                  "$status $body_bytes_sent "$http_referer" "
    #                  ""$http_user_agent" "$http_x_forwarded_for"";

    #access_log  logs/access.log  main;

    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;

    #gzip  on;

    upstream nodejs__upstream {
        server 127.0.0.1:3000;
        eepalive 64;
    }
    server {
        listen       80;
        server_name  jianqunzhang.com www.jianqunzhang.com;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        location / {
               proxy_set_header   X-Real-IP            $remote_addr;
                proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;
                proxy_set_header   Host                   $http_host;
                proxy_set_header   X-NginX-Proxy    true;
                proxy_set_header   Connection "";
                proxy_http_version 1.1;
                proxy_pass         http://nodejs__upstream;
        }

        #error_page  404              /404.html;

        # redirect server error pages to the static page /50x.html
        #
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }

        # proxy the PHP scripts to Apache listening on 127.0.0.1:80
        #
        #location ~ .php$ {
        #    proxy_pass   http://127.0.0.1;
        #}

        # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
        #
        #location ~ .php$ {
        #    root           html;
        #    fastcgi_pass   127.0.0.1:9000;
        #    fastcgi_index  index.php;
        #    fastcgi_param  SCRIPT_FILENAME  /scripts$fastcgi_script_name;
        #    include        fastcgi_params;
        #}

        # deny access to .htaccess files, if Apache"s document root
        # concurs with nginx"s one
        #
        #location ~ /.ht {
        #    deny  all;
        #}
    }


    # another virtual host using mix of IP-, name-, and port-based configuration
    #
    #server {
    #    listen       8000;
    #    listen       somename:8080;
    #    server_name  somename  alias  another.alias;

    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}


    # HTTPS server
    #
    #server {
    #    listen       443 ssl;
    #    server_name  localhost;

    #    ssl_certificate      cert.pem;
    #    ssl_certificate_key  cert.key;

    #    ssl_session_cache    shared:SSL:1m;
    #    ssl_session_timeout  5m;

    #    ssl_ciphers  HIGH:!aNULL:!MD5;
    #    ssl_prefer_server_ciphers  on;

    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}

}

其中主要增加修改如下配置

upstream nodejs__upstream {
    server 127.0.0.1:3000;
    keepalive 64;
}
server {
    listen       80;
    server_name  jianqunzhang.com www.jianqunzhang.com;
    
    #charset koi8-r;
    
    #access_log  logs/host.access.log  main;
    
    location / {
            proxy_set_header   X-Real-IP $remote_addr;
            proxy_set_header   X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header   Host $http_host;
            proxy_set_header   X-NginX-Proxy    true;
            proxy_set_header   Connection "";
            proxy_http_version 1.1;
            proxy_pass         http://nodejs__upstream;
}

其中proxy_set_header指令可以更改Nginx服務器接收到的客戶端請求的請求頭信息，然后將新的請求頭發送給被代理的服務器。

在服務器啟動nodejs,注意監聽的端口與配置的nginx.conf要一致。本配置直接監聽3000端口。
如果proxy_pass http://nodejs__upstream;在不設置http://時，要注意

upstream nodejs__upstream {
    server 127.0.0.1:3000;
    keepalive 64;
}

的server 要加上http://，如

upstream nodejs__upstream {
    server http://127.0.0.1:3000;
    keepalive 64;
}

啟動nodejs后，訪問所設置的域名即可。

PM2 is a production process manager for Node.js applications with a built-in load balancer. It allows you to keep applications alive forever, to reload them without downtime and to facilitate common system admin tasks.

npm i pm2 -g

pm2 start bin/www

到目前為止，整個項目算是跑起來了。記錄一下同時也希望對小伙伴們有所幫助。