HAproxy allows backend RS to record real IP addresses

HAproxy allows backend RS to record real IP addresses

# Let RS record the real IP address of the client

#1. Add the following parameters to haproxy. cfg.

Listen www
...
Option forwardfor
# If the backend server needs to obtain the real ip address of the client, the parameters must be placed in the listen module.

#2. If apache is used, add the following parameters.

LogFormat "\" % {X-Forwarded-For} I \ "% l % t \" % r \ "%> s % B \" % {Referer} I \"\ "% {User-Agent} I \" "combined
The parameter "\" % {X-Forwarded-For} I \ can record IP addresses.

#3. If the backend RS is nginx, add the following parameter:

Set_real_ip_from ip; (this ip address is the proxy ip address)
 
Real_ip_header X-Forwarded-;

Log_format main '$ remote_addr-$ remote_user [$ time_local] "$ request "'
'$ Status $ body_bytes_sent' $ http_referer "'
'"$ Http_user_agent" "$ http_x_forwarded_for "'
========================================================== =====
Add the $ remote_addr or $ http_x_forwarded_for parameter to log_format.

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