[SOLVED] Blank page

zarahel · Post by **zarahel** » Wed Feb 06, 2008 4:02 pm

Good evening

I could use some help.

As for what I´ve seen this seems to be a very common problem, but I´ve still haven´t found an answer. During the installation of Cacti, when you´re suposed to access cacti via web browser for the first time, all i get is a blank page.

I´ve followed the manual to the letter and I can´t get pass the 8 step:

8. Point your web browser to:
http://your-server/cacti/

It seems to be some kind of PHP problem, but I can´t figure it out. Do I need to configure Apache with anything else than:

# Load config files from the config directory "/etc/httpd/conf.d".
Include conf.d/*.conf

I´m using Fedora 7 and I´ve installed HTTPD, PHP, PHP-MYSQL, PHP-SNMP, MYSQL, MYSQL-SERVER and NET-SNMP using YUM, so I ´ve got the most recent version of the respective packages.

I would apreciate any help

Thkx

fmangeant · Post by **fmangeant** » Thu Feb 07, 2008 3:15 am

Hi

did you create the MySQL database for Cacti, a MySQL user, import cacti.sql and configure include/config.php ?

zarahel · Post by **zarahel** » Thu Feb 07, 2008 4:54 am

Yes.I´ve done all that. Any other suggestions?

strides · Post by **strides** » Thu Feb 07, 2008 5:02 am

Hi

Just had the same problem... the apache error_log says it couldn't find the modules to load them as it was looking for them in the same directory as the configured extension_dir (extension_dir = /etc/php.d) in the instructions:
...
PHP Warning: PHP Startup: Unable to load dynamic library '/etc/php.d/mysqli.so' - /etc/php.d/mysqli.so: cannot open shared object file: No such file or directory in Unknown on line 0
...

... that'd be because that ain't where they live then... so I did a quick search and found the elusive modules residing in /usr/lib/php/modules then I copied /etc/php.d/* to /usr/lib/php/modules and changed extension_dir in php.ini to /usr/lib/php/modules as well.

One swift restart of httpd and im now finally seeing the "Cacti Installation Guide", so it appears to have done the trick...

HTH

/S

zarahel · Post by **zarahel** » Thu Feb 07, 2008 6:41 am

Strides, thkx for your help. I figured out that myself this morning, and u were right.

But in the meanwhile I got an error creating graphichs.

For some reason I cannot create the RRDs. I get this error:

ERROR: opening '/usr/share/cacti/rra/localhost_mem_buffers_3.rrd': No such file or directory

I´ve allowed for all user to write in RRA and LOG by chmod 777.

Why cant I create the RRDs?

Thkx

strides · Post by **strides** » Thu Feb 07, 2008 7:22 am

You're doing well... I came to a halt on the very next page when I discovered I'd forgot to install rrdtool

Is that an error on the webpage? I take it the rra directory is indeed empty...

I had trouble getting my cronjob to work and my rra dir was empty until i ran poller.php from the CLI (after su'ing to the cacti user), then they appeared. Ultimately I ignored the defined cron instructions after getting no joy with them and su'ed into the cacti user again and did a crontab -e from there for poller.php, then restarted crond back as root... seems to be working anyway. Didn't need to use chmod though, just chown the directories as the instructions indicated...

HTH

/S

zarahel · Post by **zarahel** » Thu Feb 07, 2008 8:44 am

strides...I´m kinda new to cacti, so I didn´t quite unsderstand what u did?
Could u please post here the command sequence u used?

zarahel · Post by **zarahel** » Thu Feb 07, 2008 8:57 am

Ok...so I´ve figured out what the problem was: I had to access /usr/share/cacti/include/global.php and redefine the database password to the one i used when building my cacti Database.

strides · Post by **strides** » Thu Feb 07, 2008 9:20 am

Sorry chap, was out on lunch. Glad you got it sorted.

Cacti

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