05 Nginx+Tomcat负载均衡、动静分离群集

以下是一个基于Nginx的反向代理配置示例，用于实现Tomcat服务器的负载均衡和静态资源的分离处理：

# nginx.conf 或在 include 中的某个配置文件
 
user  nginx;
worker_processes  1;
 
events {
    worker_connections  1024;
}
 
http {
    include       mime.types;
    default_type  application/octet-stream;
 
    # 日志格式
    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';
 
    # 访问日志
    access_log  logs/access.log  main;
 
    sendfile        on;
    #tcp_nopush     on;
 
    keepalive_timeout  65;
 
    # 动静分离
    server_names_hash_bucket_size 128;
    client_header_buffer_size 32k;
    large_client_header_buffers 4 32k;
    client_max_body_size 8m;
    client_body_buffer_size 128k;
    proxy_connect_timeout 600;
    proxy_read_timeout 600;
    proxy_send_timeout 600;
    proxy_buffer_size 16k;
    proxy_buffers 4 32k;
    proxy_busy_buffers_size 64k;
    proxy_temp_file_write_size 64k;
 
    # 配置静态文件处理
    server {
        listen       80;
        server_name  localhost;
 
        location / {
            root   /usr/share/nginx/html;
            index  index.html index.htm;
        }
 
        # 处理静态文件缓存
        location ~* \.(jpg|jpeg|gif|png|css|js|ico|html)$ {
            access_log        off;
            log_not_found     off;
            expires           30d;
        }
    }
 
    # 配置Tomcat服务器群集负载均衡
    upstream tomcat_server {
        server tomcat1.example.com:8080;
        server tomcat2.example.com:8080;
    }
 
    server {
        listen       80;
        server_name  localhost;
 
        # 对于动态内容的请求代理到Tomcat服务器群集
        location ~ \.(jsp|do|action)$ {
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_pass http://tomcat_server;
        }
 
        # 配置Nginx作为Tomcat的Access Log和Error Log的存储
        access_log  logs/tomcat_access.log  main;
        error_log  logs/tomcat_error.log;
    }
}

这个配置文件定义了一个静态文件缓存和一个负载均衡器，用于将动态请求（如JSP页面）代理到后端的Tomcat服务器群集。它还展示了如何设置Nginx以便处理静态内容和日志记录。这个配置是一个基本的例子，可以根据实际需求进行调整。