HAProxy

3 troubleshooting guides

Fixing HAProxy 503 Service Unavailable, 502 Bad Gateway & 504 Timeout Errors

Learn how to troubleshoot and fix HAProxy 503 Service Unavailable and 502/504 gateway errors. Step-by-step diagnostic guide for backend connection issues.

HAProxy 503 Service Unavailable: Complete Troubleshooting Guide

Fix HAProxy 503 Service Unavailable fast. Root causes: health checks, maxconn limits, no backend pool—plus step-by-step fixes with real commands.

Resolving HAProxy SSL Handshake Failure: A Complete Troubleshooting Guide

Fix HAProxy SSL handshake failures caused by cipher suite mismatches, missing intermediate certificates, SNI configuration errors, and backend verification issu