HAProxy

Fix HAProxy connection refused errors fast. Covers dead backends, misconfigured bind addresses, firewall blocks, and ACL issues with exact commands and config f

Fix 'Connection refused', '503 Service Unavailable', and slow HAProxy responses by diagnosing backend health, tuning maxconn limits, and adjusting SELinux.

Resolve HAProxy connection refused errors quickly. Discover the root causes—from backend down states to firewall issues—and learn step-by-step troubleshooting.