Cacti Graphs for Apache Not Working? Check Your IPv6
I was wondering earlier why my Apache Cacti graphs were all graphing 0s. Looking to test manually, I see it’s either 0s or -1s like below.
[revin@forge ~]# /usr/bin/php -q /usr/share/cacti/scripts/ss_get_by_ssh.php --host xx.xx.xxx.xxx --type apache --items g1,g3 g1:-1 g3:-1
Looking at the Apache access log on the target server, I noticed Cacti was trying to connect to the IPv6 loopback address “::1”.
::1 - - [13/Oct/2012:22:00:02 -0400] "GET /server-status?auto HTTP/1.0" 403 290 "-" "Cacti/1.0"
Fortunately this was easy to fix, either disable IPv6 on Apache or allow access to /server-status via the IPv6 loopback address.
From your httpd.conf, you can disable IPv6 by changing the Listen directive to:
Or adding the below Allow directive for /server-status section:
<Location /server-status> SetHandler server-status Order deny,allow Deny from all Allow from 127.0.0.1 Allow from ::1 </Location>
[revin@forge ~]# /usr/bin/php -q /usr/share/cacti/scripts/ss_get_by_ssh.php --host 188.8.131.52 --type apache --items g1,g3 g1:83968 g3:6