在Debian上实现JSP项目负载均衡,常用方案是以Nginx或HAProxy作为反向代理,搭配多个Tomcat实例,具体步骤如下:
sudo apt update  
sudo apt install nginx tomcat9  # 安装Nginx和Tomcat9  
/etc/nginx/nginx.conf 或 /etc/nginx/conf.d/load_balancer.conf,添加以下内容:http {  
    upstream tomcat_servers {  
        server 127.0.0.1:8080;  # Tomcat实例1  
        server 127.0.0.1:8081;  # Tomcat实例2  
        # 可选负载均衡策略:round-robin(默认)、least_conn、ip_hash  
        least_conn;  # 最少连接数策略  
    }  
    server {  
        listen 80;  
        location / {  
            proxy_pass http://tomcat_servers;  
            proxy_set_header Host $host;  
            proxy_set_header X-Real-IP $remote_addr;  
        }  
    }  
}  
sudo systemctl restart nginx  
sudo apt install haproxy  
/etc/haproxy/haproxy.cfg,添加后端服务器配置:frontend http_front  
    bind *:80  
    default_backend http_back  
backend http_back  
    balance roundrobin  # 轮询策略  
    server tomcat1 127.0.0.1:8080 check  
    server tomcat2 127.0.0.1:8081 check  
sudo systemctl restart haproxy  
ip_hash 策略,或配置Tomcat的会话复制功能。以上方案可根据实际需求选择,Nginx适合Web场景,HAProxy适合复杂负载均衡需求。