April 2017
Intermediate to advanced
470 pages
11h 12m
English
Content preview from Mastering OpenStack - Second Edition
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Understanding HAProxy
HAProxy stands for High Availability Proxy. It is a free load balancing software tool that aims to proxy and direct requests to the most available nodes based on TCP/HTTP traffic. This includes a load balancer feature that can be a frontend server. At this point, we find two different servers within an HAProxy setup:
- A frontend server listens for requests coming on a specific IP and port, and determines where the connection or request should be forwarded
- A backend server defines a different set of servers in the cluster receiving the forwarded requests
Basically, HAProxy defines two different load balancing modes:
- Load balancing layer 4: Load balancing is performed in the transport layer in the OSI model. All the ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.