默认配置项

user www-data;  //nginx账户
worker_processes auto; //允许开启的worker的数量 
pid /run/nginx.pid; //配置pid的路径
include /etc/nginx/modules-enabled/*.conf;  // include 引入文件
//不同进程的配置
events {
        worker_connections 768; //每个进程支持的并发数
        # multi_accept on;
}

http {

        ##
        # Basic Settings
        ##

        sendfile on; // 是否让nginx调用系统的sendfile函数
        tcp_nopush on; //是否让数据包累计进行传输
        tcp_nodelay on;// 最小数据包是否等待然后继续传输
        keepalive_timeout 65; //请求超时时间
        types_hash_max_size 2048;
        # server_tokens off;

        # server_names_hash_bucket_size 64;
        # server_name_in_redirect off;

        include /etc/nginx/mime.types; // 引入文件类型枚举的文件
        default_type application/octet-stream; //如果是不在文件枚举类型中统一以application 二进制流做返回

        ##
        # SSL Settings
        ##

        ssl_protocols TLSv1 TLSv1.1 TLSv1.2 TLSv1.3; # Dropping SSLv3, ref: POODLE
        ssl_prefer_server_ciphers on;

        ##
        # Logging Settings
        ##
      
        access_log /var/log/nginx/access.log; //日志路径
        error_log /var/log/nginx/error.log;//错误日志路径

        ##
        # Gzip Settings
        ##

        gzip on;

        # gzip_vary on;
        # gzip_proxied any;
        # gzip_comp_level 6;
        # gzip_buffers 16 8k;
        # gzip_http_version 1.1;
        # gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;

        ##
        # Virtual Host Configs
        ##

        include /etc/nginx/conf.d/*.conf;
        include /etc/nginx/sites-enabled/*; //关于端口访问的配置
}


#mail {
#       # See sample authentication script at:
#       # http://wiki.nginx.org/ImapAuthenticateWithApachePhpScript
#
#       # auth_http localhost/auth.php;
#       # pop3_capabilities "TOP" "USER";
#       # imap_capabilities "IMAP4rev1" "UIDPLUS";
#
#       server {
#               listen     localhost:110;
#               protocol   pop3;
#               proxy      on;
#       }
#
#       server {
#               listen     localhost:143;
#               protocol   imap;
#               proxy      on;
#       }
#}