How to maintain the real IP of the client when using haproxy for load balancing

The following brings you how to use haproxy to maintain the real IP of the client when doing load balancing, hoping to bring some help to you in practical application. Load balancing involves more things, there are not many theories, and there are many books on the Internet. Today, we will use the accumulated experience in the industry to do an answer.

Add setting items to haproxy

Option forwardfor

Option httpclose

This log_format format acquisition of your application needs to be changed, such as apache's:

LogFormat "% {X-Forwarded-For} I% l% u% t\"% r\ "% > s% b\"% {Referer} I\ "\"% {User-Agent} I\ "" combined

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