实现 Nginx 和多个 Tomcat 进程负载均衡

实现 Nginx 和多个 Tomcat 进程负载均衡，静态文件和媒体文件，还有不完善的地方，但总的思路是通用的：

user www-data;
worker_processes 4;
pid /run/nginx.pid;

events {
        worker_connections 1024;
        multi_accept on;
        use epoll;
}


http   
{  
        ##
        # Basic Settings
        ##

        sendfile on;
        tcp_nopush on;
        tcp_nodelay on;
        keepalive_timeout 65;
        types_hash_max_size 2048;
        # server_tokens off;

        # server_names_hash_bucket_size 64;
        # server_name_in_redirect off;

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

        ##
        # Logging Settings
        ##

        access_log /var/log/nginx/access.log;
        error_log /var/log/nginx/error.log;

        ##
        # Gzip Settings
        ##

        gzip on;
        gzip_disable "msie6";

        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/x-javascript text/xml application/xml application/xml+rss text/javascript;

  
#多个tomcat进程负载均衡
upstream www_domain_com {
          server localhost:8081 max_fails=3 weight=1 fail_timeout=60s;
          server localhost:8082 max_fails=3 weight=1 fail_timeout=60s;

          ip_hash;

          keepalive 60;
        }
         
  server
  {
    listen 80;
    server_name www.domain.com domain.com;
    index /index;

    location / {
        proxy_pass http://www_domain_com ;
        proxy_redirect off;
        proxy_set_header   Cookie $http_cookie; 
        proxy_set_header   Host $host;
        proxy_set_header   Remote_Addr $remote_addr;
        proxy_set_header   X-Real-IP $remote_addr;
        proxy_set_header   REMOTE-HOST $remote_addr; 
        proxy_set_header   X-Forwarded-For $proxy_add_x_forwarded_for;

        client_max_body_size 80m;
        client_body_buffer_size 128k;
        proxy_connect_timeout 90;
        proxy_send_timeout 90;
        proxy_read_timeout 90;
        proxy_buffer_size 4k;
        proxy_buffers 4 32k;
        proxy_busy_buffers_size 64k;
        proxy_temp_file_write_size 64k;
    }
  
    
    location ~ ^/static/ {
        root /var/apache-tomcat-8.0.28/myproject1/ROOT/;
        expires 30d;
    }

    location ~ ^/media/ {
        root /var/apache-tomcat-8.0.28/myproject1/ROOT/;
        expires 30d;
    }
  }
}

静态文件和媒体文件，按理来说，应该独立一个 Server 和 域名，实现独立的分离。现在是只取一个副本myproject 的静态文件和媒体文件做公共用途了。