nginx 配置文件

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user nginx;
worker_processes auto;
error_log /var/log/nginx/error.log;
pid /run/nginx.pid;

# Load dynamic modules. See /usr/share/doc/nginx/README.dynamic.
include /usr/share/nginx/modules/*.conf;

events {
　　

      use epoll;

    worker_connections 1024;
}

http {
    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  /var/log/nginx/access.log  main;

    sendfile            on;
    tcp_nopush          on;
    tcp_nodelay         on;
    keepalive_timeout   65;
    types_hash_max_size 4096;

    include             /etc/nginx/mime.types;
    default_type        application/octet-stream;

   
    include /etc/nginx/conf.d/*.conf;

    server {
        listen       80;
        listen       [::]:80;
        server_name localhost;
      #  root         /usr/share/nginx/html;
  location / {
                proxy_pass    http://localhost:8084/;
                proxy_set_header Upgrade $http_upgrade;
                proxy_set_header Connection keep-alive;
                proxy_set_header Host $host;
                proxy_set_header X-Forwarded-Proto $scheme;
                proxy_set_header X-Forwarded-Host $host;
                proxy_set_header X-Forwarded-Port $server_port;
                proxy_cache_bypass $http_upgrade;
 
                proxy_set_header   X-Forwarded-Prefix swagger;     #------其中swagger可以更换任何路由
                proxy_set_header X-Real-IP $remote_addr;
                proxy_set_header X-Forwarded-For $remote_addr;

 }
       

        # Load configuration files for the default server block.
        include /etc/nginx/default.d/*.conf;

        error_page 404 /404.html;
        location = /404.html {
        }

        error_page 500 502 503 504 /50x.html;
        location = /50x.html {
        }
    }

# Settings for a TLS enabled server.
#
#    server {
#        listen       443 ssl http2;
#        listen       [::]:443 ssl http2;
#        server_name  _;
#        root         /usr/share/nginx/html;
#
#        ssl_certificate "/etc/pki/nginx/server.crt";
#        ssl_certificate_key "/etc/pki/nginx/private/server.key";
#        ssl_session_cache shared:SSL:1m;
#        ssl_session_timeout  10m;
#        ssl_ciphers HIGH:!aNULL:!MD5;
#        ssl_prefer_server_ciphers on;
#
#        # Load configuration files for the default server block.
#        include /etc/nginx/default.d/*.conf;
#
#        error_page 404 /404.html;
#            location = /40x.html {
#        }
#
#        error_page 500 502 503 504 /50x.html;
#            location = /50x.html {
#        }
#    }

}

1、user 是指nginx的使用用户，可以设置为root，因为root拥有最高权限

2、worker_processes auto 工作进程数，nginx 有主进程 和 子进程 组成，主进程不负责具体工作，子进程负责具体工作，子进程数量的设置建议设置为CPU的内核数，如果你有台4核的主机，可以设置为 4 ，如果Nginx主机中还有其他中间件，建议设置为小于内核数

3、error_log 错误日志存储地址

4、pid  nginx 进程信息 ，可通过如下指令查看

ps -ef|grep nginx

5、include  子配置文件，目的是为了防止主配置文件过大，增加可读性

6、events : worker_connections 每个工作进程的最大连接数，Nginx 可抗住50000的并发量，因此最大可设置为 50000， 但这个值的设定要根据linux主机的性能及项目访问量

7、 use epoll 使用 epoll  模式，也是默认的