Tomcat program logs client real IP

Demand:

Development notification: Let the backend tomcat log get the real IP, not the nginx server's IP

Tomcat is in front of the nginx-made reverse proxy, so Tomcat takes the Nginx IP.

Journal name is Localhost_access_log.txt

In fact, to solve this problem, only need to modify two places:

1. Modify the Nginx configuration file

Add in Server or location

Proxy_set_header x-forwarded-for $remote _addr;

2. Modifying the Tomcat configuration file

Modify the Server.xml file in the file

Modify the contents of the pattern parameter in the classname= "Org.apache.catalina.valves.AccessLogValve" directory= "logs" block to the above red font content, i.e.:

pattern="%{x-forwarded-for}i%l%u%t%r%s%b%d%q%{user-agent}i" resolvehosts= "false"

Complete configuration after the modification:

 <valve classname=  Org.apache.catalina.valves.AccessLogValve   Directory= " logs  "   = localhost_access_log suffix="  .txt   "  ="  %{x-forwarded-for}i%l%u%t%r%s%b%d%q%{user-agent}i   resolvehosts=< Span style= "color: #800000;" > " false  " /> 

Detailed Pattern configuration parameters:

The pattern configuration segment that specifies the output format for the log. The log parameters are as follows:

%a-Remote IP address%a-Local IP address%b-The number of bytes sent, not including the HTTP header, or "-"If no bytes are sent%b-number of bytes sent, not including HTTP header%h-remote Host name%h-Request Protocol%l (lowercase L)-Remote logic from the IDENTD user name (always return' - ')%m-Request Method%p-Local Port%q-query string (preceded by a "? "If it exists, it is an empty string%r-requirement for first line%s-HTTP status Code%s for response-User session Id%t-date and time, in common log format%u-remote user authentication%u-URL Path of the request%v-local server name%d-time (in milliseconds) to process the request%t-time (in seconds) to process the request%i (uppercase I)-thread name of the current request Additionally, you can specify the following alias to be set as one of the universally used modes: common-%h%l%u%t"%r"%s%bcombined-%h%l%u%t"%r"%s%b"%{referer}i" "%{user-agent}i" 

In addition, you can write the query parameters of request requests, session variable values, cookie values, or variable values for HTTP request/response header content to a log file.

It is modeled after the Apache syntax:

%{xxx}i XXX on behalf of incoming headers (HTTP Request)

%{xxx}o XXX stands for outgoing response headers (Http resonse)

%{xxx}c XXX represents a specific cookie name

%{xxx}r XXX stands for ServletRequest property name

%{xxx}s XXX represents the attribute name in HttpSession

Pattern parameter Detailed reference: http://sofar.blog.51cto.com/353572/1712069/

Tomcat program logs client real IP