nginx+Tomcat（反向代理、动静分离、负载均衡）

为实现Nginx与Tomcat的反向代理、动静分离和负载均衡，你需要做以下配置：

1. Nginx 配置文件 (nginx.conf) 示例：

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;
 
    # gzip 压缩
    gzip on;
    gzip_min_length  1k;
    gzip_buffers     4 16k;
    gzip_http_version 1.1;
    gzip_comp_level 2;
    gzip_types       text/plain application/javascript application/x-javascript text/javascript text/xml text/css;
    gzip_vary on;
 
    # 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
        location ~* \.(jpg|jpeg|gif|png|css|js|ico|html)$ {
            access_log        off;
            log_not_found     off;
            expires           30d;
        }
    }
 
    # 负载均衡配置
    upstream tomcat_server {
        server 127.0.0.1:8080;
        server 127.0.0.1:8081;
    }
 
    # 反向代理配置
    server {
        listen       80;
        server_name  localhost;
 
        location / {
            proxy_pass http://tomcat_server;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        }
    }
}

2. 确保 Nginx 配置没有错误：

nginx -t

3. 如果没有错误，重新加载 Nginx 配置：

nginx -s reload

在上述配置中，Nginx 作为反向代理接收来自客户端的请求，并将这些请求根据配置的负载均衡策略分发到在 \`upstrea