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Apache 2.2.3 | PHP 5.1.6 | MySQL 5.0.77

I followed cacti installation guide to install latest cacti 0.8.7h on CentOS 5.5 (64-bit). The installation of PHP/Apache/MySQL went smoothly until I finished the setup, and came to the login page.

I can login http://.../cacti/index.php with admin account but the new page is redirected to the same login page with the message "Please enter your Cacti user name and password below"

This is a infinite loop!

If I use a wrong admin password I get the correct error message "Invalid User Name/Password Please Retype". [Same problem here]

If I login use Guest/guest account, "Error: Access Denied, user account disabled." displays.

The Cacti log file (./cacti/log/cacti.log) is empty.

I Googled and seems this problem has existed for a long time, but no followup solutions were found on the forum posts I found. Anyone can help me on this problem? If more information needed, please let me know.

Nov 18, 2011 UPDATE: I re-installed Cacti, this question remains UNSOLVED.

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try to enable session.auto_start on php.ini or check your session.save_path

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Enable session.auto_start does no help. session.save_path = "/var/lib/php/session", should I change it? – Andrew Nov 15 '11 at 2:24
BTW, for the "Required Packages for RPM-based Operating Systems", when I verify the package httpd and net-snmp, the following displays: [cacti]# rpm -V httpd S.5....T c /etc/httpd/conf/httpd.conf [cacti]# rpm -V net-snmp S.5....T c /etc/snmp/snmpd.conf S.5....T /usr/share/snmp/mibs/.index What does that indicate and will it be the problem? – Andrew Nov 15 '11 at 2:39
should be not problem. /var/lib/php/session <= is it writable by apache ?. i got the same problem with you last time. i checked on database cacti i was login successfully ( select * from user_log, you should see the result field, if it's 1 it's mean successfully ), but on the frontend it's still showing login page. – chocripple Nov 15 '11 at 3:54
Login successfully but return to login page, that's exactly the problem I'm facing. Have you solved this problem last time? Would it be a good idea to "yum install cacti"? – Andrew Nov 15 '11 at 4:08
yes, i solved it with change session.save_path to /tmp/, and enable session.auto_start. after you login successfully, check /tmp/ it's should be have file sessions like SESS_xxxx. i'm not sure you can install via yum (cmiiw, if you can it could be using old version). – chocripple Nov 15 '11 at 5:04

Login as admin, click on "User Management" Select the user you're trying to authenticate with. On the right corner click on: chose an action -> Enable -> Go

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It may be worth taking a look at the domain of cookies returned by cacti and at what domain you actually use to open it. Helped in my case.

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