nginx配置文件内容详解

events {
    # 服务器最大链接数
    worker_connections  1024;
    # 设置一个进程是否同时接受多个网络连接，默认为off
    multi_accept on;
    #事件驱动模型，select|poll|kqueue|epoll|resig|/dev/poll|eventport
    #use epoll;
}
http {
    # 负载配置 javaApi => 变量名称
    # 热备：如果你有2台服务器，当一台服务器发生事故时，才启用第二台服务器给提供服务。服务器处理请求的顺序：AAAAAA突然A挂啦，BBB.....
    # upstream javaApi { 
    #    server 192.168.1.1:8080; 
    #    server 192.168.1.2:8080 backup;  #热备     
    # }
    # 轮询：nginx默认就是轮询其权重都默认为1，服务器处理请求的顺序：ABABABABAB....
    # upstream javaApi { 
    #    server 192.168.1.1:8080;
    #    server 192.168.1.2:8080;       
    # }
    # 加权轮询：跟据配置的权重的大小而分发给不同服务器不同数量的请求。如果不设置，则默认为1。下面服务器的请求顺序为：ABBABBABBABBABB....
    # upstream javaApi { 
    #    server 192.168.1.1:8080 weight=1;
    #    server 192.168.1.2:8080 weight=2;
    # }
    # ip_hash:nginx会让相同的客户端ip请求相同的服务器。
    # upstream javaApi { 
    #    server 192.168.1.1:8080; 
    #    server 192.168.1.2:8080;
    #    ip_hash;
    # }
    # max_fails/fail_timeout 一般会配合使用
    # upstream javaApi {
    #     server 192.168.1.1:8080   max_fails=2 fail_timeout=30s;
    #     server 192.168.1.2:8080   max_fails=2 fail_timeout=30s;
    # }
    upstream javaApi { 
        server 192.168.1.1:8001 weight=1 max_fails=2 fail_timeout=30s;
        server 192.168.1.2:8001 weight=1 max_fails=2 fail_timeout=30s;
        server 192.168.1.3:8001 weight=1 max_fails=2 fail_timeout=30s;
        ip_hash;
    }
    
    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"';
    # 自定义格式
    log_format myFormat '$remote_addr–$remote_user [$time_local] $request $status $body_bytes_sent $http_referer $http_user_agent $http_x_forwarded_for';

    access_log  /usr/local/nginx/logs/access.log  myFormat;

    # 允许sendFile传输文件
    sendfile        on;
    #tcp_nopush     on;

    # 每个进程每次调用传输数量不能大于设定的值，默认为0，即不设上限。
    # sendfile_max_chunk 100k;

    keepalive_timeout  65;

    # 开启gzip
    gzip on;

    # 启用gzip压缩的最小文件，小于设置值的文件将不会压缩
    gzip_min_length 1k;

    # gzip 压缩级别，1-10，数字越大压缩的越好，也越占用CPU时间，后面会有详细说明
    gzip_comp_level 7;

    # 进行压缩的文件类型。javascript有多种形式。其中的值可以在 mime.types 文件中找到。
    gzip_types text/plain application/javascript application/x-javascript text/css application/xml text/javascript application/x-httpd-php image/jpeg image/gif image/png;

    # 是否在http header中添加Vary: Accept-Encoding，建议开启
    gzip_vary on;

    # 禁用IE 6 gzip
    gzip_disable "MSIE [1-6].";

    # 设置上传文件大小
    client_max_body_size 100M;

    server {
        listen 80;
        server_name baidu.com;
        charset      urf-8;
        #告诉浏览器有效期内只准用 https 访问
        add_header Strict-Transport-Security max-age=15768000;
        #临时重定向到 https 站点
        return 307 https://$server_name$request_uri;
    }

    server {
        listen  443 ssl;
        server_name baidu.com;
        charset      utf-8;
        # ssl on;

        ssl_certificate         /usr/local/nginx/ssl/xxxxxxxx_baidu.com.pem;
        ssl_certificate_key     /usr/local/nginx/ssl/xxxxxxxx_baidu.com.key;

        ssl_session_timeout 10m;
        ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
        ssl_ciphers ECDHE-RSA-AES128-GCM-SHA256:HIGH:!aNULL:!MD5:!RC4:!DHE;
        ssl_prefer_server_ciphers on;

        location / {
          root   /data/web/factory/;
          index  index.html index.htm;
          if ( !-e $request_filename ) {
                rewrite ^/(.*) /index.html last;
                break;
            }
        }
       
        # 设置前端静态资源文件夹路径
        location /static/{
            alias /data/web/factory/static/;
        }

        # 设置微信业务域名配置文件
        location /xxxxxxxxxxxxx.txt{
            alias /usr/local/nginx/wechat/xxxxxxxxxx.txt;
        }

        # 服务端api转发
        location ~ (/api/|/aiApi/) {
            proxy_redirect off;
            proxy_set_header Host $http_host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_next_upstream http_502 http_504 error timeout invalid_header;
            proxy_pass http://javaApi;
        }
        
    }

}