####安装#####
sudo apt update
sudo apt install haproxy
sudo haproxy -v
sudo systemctl status haproxy
sudo cp /etc/haproxy/haproxy.cfg /etc/haproxy/haproxy.cfg-org####配置站点#####
nano /etc/haproxy/haproxy.cfg
==========================================
frontend www-httpbind *:5001mode httpdefault_backend dotnetweb1backend dotnetweb1mode httpbalance roundrobinserver web1 192.168.31.142:5001server web2 192.168.31.143:5001
=========================================
sudo systemctl restart haproxy

运行效果：

http://192.168.31.142:5001/swagger/index.html

使用代理：

http://192.168.31.181:5001/swagger/index.html