Get metrics from status page using HTTP agent
https://www.haproxy.com/blog/exploring-the-haproxy-stats-page/.
Example configuration of HAProxy:
  frontend stats
      bind *:8404
      stats enable
      stats uri /stats
      stats refresh 10s
      #stats auth Username:Password  # Authentication credentials

You can discuss this template or leave feedback on our forum https://www.zabbix.com/forum/zabbix-suggestions-and-feedback/393527-discussion-thread-for-official-zabbix-template-haproxy

Template tooling version used: 0.39