Knowledge Base | Basics
The Four Essential Sections of an HAProxy Configuration
Chad LavoieAn HAProxy configuration file guides the behavior of your HAProxy load balancer. In this post, we demonstrate its four most essential sections. There are four essential sections to an HAProxy configuration file. They are global, defaults, frontend, and backend. These...
Introduction to HAProxy Maps
Chad LavoieAn HAProxy map file stores key-value pairs and is the starting point for some inventive behavior including dynamic rate limiting and blue-green deployments. Dictionaries. Maps. Hashes. Associative arrays. Can you imagine life without these wonderful key-value data...
Introduction to HAProxy Stick Tables
Chad LavoieHTTP requests are stateless by design. However, this raises some questions regarding how to track user activities, including malicious ones, across requests so that you can collect metrics, block users, and make other decisions based on state. The only way to track...
Introduction to HAProxy ACLs
Chad LavoieAn HAProxy ACL lets you define custom rules for blocking malicious requests, choosing backends, redirecting to HTTPS and using cached objects. See The Webinar: Introduction to HAProxy ACLs: Building Rules for Dynamically Routing Requests, Redirecting Users and...
HAProxy Log Customization
Baptiste AssmannSynopsis One of the strength of HAProxy is its logging system. It is very verbose and provides many information. HAProxy HTTP log line is briefly explained in an HAProxy Technologies memo. It's a must have document when you have to analyze HAProxy's log lines to...
ALOHA Load Balancer as a Reverse Proxy
Baptiste AssmannSynopsis You own small public subnet and want to be able to access multiple web sites or application behind a single public IP address. Basically, you want to use your Aloha load-balancer as a reverse proxy. Diagram The diagram below shows how the reverse proxy works....
