CODEWITHSUNDEEP
debuggingnginxgeoip
Fang-Pen Lin
Fang-Pen Lin

Reputation: 14406

Nginx geo ip module doesn't work, cannot find a way to debug

I follow nginx geoip configuration guide here http://www.howtoforge.com/nginx-how-to-block-visitors-by-country-with-the-geoip-module-debian-ubuntu

I write something like this

geoip_country /path/to/GeoIP.dat;

I am pretty sure the .dat file is there, and nginx has permission to access it. However, the geoip_country_code variable seems not set.

I've tried many approaches to debug, like

add_header X-debug-message "$geoip_country_code";

or

log_format debug "$geoip_country_code"

for header, nginx returns empty result. And for log format, it simply record nothing. My bet is geoip_country_code is not even defined, so nginx cannot deal with it or what.

I tried to read the server error log, however, nothing there (nothing about geoip and the undefined variable). It's kinda annoying, how can I know what's going on with nginx and the geoip module?

Upvotes: 3

Views: 4659

Answers (2)

ᴍᴇʜᴏᴠ
ᴍᴇʜᴏᴠ

Reputation: 5256

A way to debug could be checking the environment for the GEOIP variables, e.g. in PHP look in the $_SERVER array, or try getenv(GEOIP_COUNTRY_CODE).

Make sure to define the variables in /etc/nginx/fastcgi_params:

### SET GEOIP Variables ###
fastcgi_param GEOIP_COUNTRY_CODE $geoip_country_code;
fastcgi_param GEOIP_COUNTRY_CODE3 $geoip_country_code3;
fastcgi_param GEOIP_COUNTRY_NAME $geoip_country_name;

source

Upvotes: 1

Fang-Pen Lin
Fang-Pen Lin

Reputation: 14406

After looking into syslog, I noticed that it's a segfault in geoip module

Aug 10 12:55:39 web kernel: [1183521.905522] nginx[30201]: segfault at 7fa773b7f2ce ip 00007fa772bc5478 sp 00007fffe4adc570 error 4 in libGeoIP.so.1.6.0[7fa772bbe000+2d000]

So, I bet it's caused either by geoip module or corrupted GeoIP.dat file. After looking into the file, I found that it's corrupted. Then I download the file again, everything works fine now.

Upvotes: 2

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