首先说明一下版本，我下载的是 nginx/1.14.0 (Ubuntu)
    我们都知道 —— 当我们将nginx下载成功后，nginx就默认启动了应用，默认为80端口 —— 为什么呢？我们从nginx的默认配置中一探究竟。

    注意看我的注释，# 开头的都是注释，其中**中文的# 开头的是我写的注释**，其他的为nginx默认配置的注释。

    当你只是当 _静态web服务器 _这种最基础的使用的话，把我中文标注的内容看懂了就够用**~以后我也会写更多文章分享“更深入”的配置理解（包括性能优化）。

    nginx.conf 文件

    1. # 指定运行用户，可以为root
    2. user www-data;
    3. # 指定子进程数
    4. worker_processes auto;
    5. # 指定运行时的pid的存储位置
    6. pid /run/nginx.pid;
    7. # 指定接受 /etc/nginx/modules-enabled/ 该路径下的所有.conf结尾的配置
    8. # 里面的文件都默认为空
    9. include /etc/nginx/modules-enabled/*.conf;
    10. # 工作模式设置
    11. events {
    12.                 # 指定最大并发数
    13.         worker_connections 768;
    14.         # multi_accept on;
    15. }
    16. # http配置设置
    17. http {
    19.         ##
    20.                 # 基础设置
    21.         # Basic Settings
    22.         ##
    24.         sendfile on;
    25.         tcp_nopush on;
    26.         tcp_nodelay on;
    27.                 # 指定客户端连接超时时长
    28.         keepalive_timeout 65;
    29.         types_hash_max_size 2048;
    30.         # server_tokens off;
    32.         # server_names_hash_bucket_size 64;
    33.         # server_name_in_redirect off;
    35.         # 指定/etc/nginx/mime.types文件设定mime类型
    36.                 include /etc/nginx/mime.types;
    37.                 # 指定默认处理的文件类型为二进制文件
    38.         default_type application/octet-stream;
    40.         ##
    41.                 # SSL证书设置
    42.         # SSL Settings
    43.         ##
    45.         ssl_protocols TLSv1 TLSv1.1 TLSv1.2; # Dropping SSLv3, ref: POODLE
    46.         ssl_prefer_server_ciphers on;
    48.         ##
    49.                 # 日志设置
    50.         # Logging Settings
    51.         ##
    52.                 # 连接成功的日志打印地址
    53.         access_log /var/log/nginx/access.log;
    54.                 # 连接失败的日志打印地址
    55.         error_log /var/log/nginx/error.log;
    57.         ##
    58.                 # Gzip压缩设置
    59.         # Gzip Settings
    60.         ##
    62.         gzip on;
    64.         # gzip_vary on;
    65.         # gzip_proxied any;
    66.         # gzip_comp_level 6;
    67.         # gzip_buffers 16 8k;
    68.         # gzip_http_version 1.1;
    69.         # gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;
    71.         ##
    72.                 # 虚拟主机设置（* 重要）
    73.         # Virtual Host Configs
    74.         ##
    75.                 # 指定接受 /etc/nginx/conf.d/ 该路径下的所有.conf结尾的配置，默认里面为空
    76.                 # 可以将自己的nginx子服务配置统一放到这里管理
    77.         include /etc/nginx/conf.d/*.conf;
    78.                 # 指定接受 /etc/nginx/sites-enabled/下的所以内容    
    79.                 # 路径内有一个default文件，里面是80端口的server设置
    80.                 # 下面会单独介绍
    81.         include /etc/nginx/sites-enabled/*;
    82. }
    84. # 邮件相关的配置
    85. # mail {
    86. #       # See sample authentication script at:
    87. #       # http://wiki.nginx.org/ImapAuthenticateWithApachePhpScript
    88. #
    89. #       # auth_http localhost/auth.php;
    90. #       # pop3_capabilities "TOP" "USER";
    91. #       # imap_capabilities "IMAP4rev1" "UIDPLUS";
    92. #
    93. #       server {
    94. #               listen     localhost:110;
    95. #               protocol   pop3;
    96. #               proxy      on;
    97. #       }
    98. #
    99. #       server {
    100. #               listen     localhost:143;
    101. #               protocol   imap;
    102. #               proxy      on;
    103. #       }
    104. #}

    /etc/nginx/sites-enabled/* 下配置介绍（只有一个文件 default）

    1. ##
    2. # You should look at the following URL's in order to grasp a solid understanding
    3. # of Nginx configuration files in order to fully unleash the power of Nginx.
    4. # https://www.nginx.com/resources/wiki/start/
    5. # https://www.nginx.com/resources/wiki/start/topics/tutorials/config_pitfalls/
    6. # https://wiki.debian.org/Nginx/DirectoryStructure
    7. #
    8. # In most cases, administrators will remove this file from sites-enabled/ and
    9. # leave it as reference inside of sites-available where it will continue to be
    10. # updated by the nginx packaging team.
    11. #
    12. # This file will automatically load configuration files provided by other
    13. # applications, such as Drupal or Wordpress. These applications will be made
    14. # available underneath a path with that package name, such as /drupal8.
    15. #
    16. # Please see /usr/share/doc/nginx-doc/examples/ for more detailed examples.
    17. ##
    19. # 默认的server配置
    20. # Default server configuration
    21. #
    22. server {
    23.               # 监听80端口
    24.         listen 80 default_server;
    25.         listen [::]:80 default_server;
    27.         # SSL configuration
    28.         #
    29.         # SSL configuration
    30.         #
    31.         # listen 443 ssl default_server;
    32.         # listen [::]:443 ssl default_server;
    33.         #
    34.         # Note: You should disable gzip for SSL traffic.
    35.         # See: https://bugs.debian.org/773332
    36.         #
    37.         # Read up on ssl_ciphers to ensure a secure configuration.
    38.         # See: https://bugs.debian.org/765782
    39.         #
    40.         # Self signed certs generated by the ssl-cert package
    41.         # Don't use them in a production server!
    42.         #
    43.         # include snippets/snakeoil.conf;
    45.               # 当前server服务的web文件的根目录
    46.         root /home/my-blog/public;
    48.               # 如果你使用PHP，那么在下面index内再加入index.php
    49.         # Add index.php to the list if you are using PHP
    50.               # 访问服务的默认首页文件（顺序依次排开）
    51.         index index.html index.htm index.nginx-debian.html;
    52.                 # 指定server名称，可以为ip/域名，多个配置之间用空格隔开
    53.         server_name 59.110.70.85;
    55.               # 当前server的路由配置
    56.         location / {
    57.                 # First attempt to serve request as file, then
    58.                 # as directory, then fall back to displaying a 404.
    59.                             # 顺序检查文件
    60.                             # 首次访问是将其当做一个文件查找（$uri），
    61.                             # 如果没有的话再当做文件夹（$uri/，有个斜杠代表文件夹），
    62.                             # 还没有的话返回404
    63.                 try_files $uri $uri/ =404;
    64.         }
    66.         # pass PHP scripts to FastCGI server
    67.         #
    68.         #location ~ \.php$ {
    69.         #       include snippets/fastcgi-php.conf;
    70.         #
    71.         #       # With php-fpm (or other unix sockets):
    72.         #       fastcgi_pass unix:/var/run/php/php7.0-fpm.sock;
    73.         #       # With php-cgi (or other tcp sockets):
    74.         #       fastcgi_pass 127.0.0.1:9000;
    75.         #}
    77.         # deny access to .htaccess files, if Apache's document root
    78.         # concurs with nginx's one
    79.         #
    80.         #location ~ /\.ht {
    81.         #       deny all;
    82.         #}
    83. }
    86. # Virtual Host configuration for example.com
    87. #
    88. # You can move that to a different file under sites-available/ and symlink that
    89. # to sites-enabled/ to enable it.
    90. #
    91. #server {
    92. #       listen 80;
    93. #       listen [::]:80;
    94. #
    95. #       server_name example.com;
    96. #
    97. #       root /var/www/example.com;
    98. #       index index.html;
    99. #
    100. #       location / {
    101. #               try_files $uri $uri/ =404;
    102. #       }
    103. #}

    参考文章：nginx 简单理解和配置