config["*_path"] don't get expanded

[floyd_n_milan]

Hi,

I installed or tried to install cacti on a Fedora Core 6 box. First I used the rpm in the extras repository and then I used the official tarball. I have this same problem for both methods.

I followed the installation documentation and configured apache and mysql etc. Upon browsing http://localhost/cacti I got a blank page. Looking at my httpd error_log, I found the following:

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[Thu May 10 16:31:25 2007] [error] [client 127.0.0.1] PHP Warning:  mb_ereg_replace() [<a href='function.mb-ereg-replace'>function.mb-ereg-replace</a>]: mbregex compile err: premature end of char-class in /usr/share/cacti/include/config.php on line 57
[Thu May 10 16:31:25 2007] [error] [client 127.0.0.1] PHP Warning:  mb_ereg_replace() [<a href='function.mb-ereg-replace'>function.mb-ereg-replace</a>]: mbregex compile err: premature end of char-class in /usr/share/cacti/include/config.php on line 58
[Thu May 10 16:31:25 2007] [error] [client 127.0.0.1] PHP Warning:  include(/adodb/adodb.inc.php) [<a href='function.include'>function.include</a>]: failed to open stream: No such file or directory in /usr/share/cacti/include/config.php on line 142
[Thu May 10 16:31:25 2007] [error] [client 127.0.0.1] PHP Warning:  include() [<a href='function.include'>function.include</a>]: Failed opening '/adodb/adodb.inc.php' for inclusion (include_path='.:/usr/share/pear:/usr/share/php') in /usr/share/cacti/include/config.php on line 142
[Thu May 10 16:31:25 2007] [error] [client 127.0.0.1] PHP Warning:  include(/database.php) [<a href='function.include'>function.include</a>]: failed to open stream: No such file or directory in /usr/share/cacti/include/config.php on line 143
[Thu May 10 16:31:25 2007] [error] [client 127.0.0.1] PHP Warning:  include() [<a href='function.include'>function.include</a>]: Failed opening '/database.php' for inclusion (include_path='.:/usr/share/pear:/usr/share/php') in /usr/share/cacti/include/config.php on line 143
[Thu May 10 16:31:25 2007] [error] [client 127.0.0.1] PHP Warning:  include_once(/functions.php) [<a href='function.include-once'>function.include-once</a>]: failed to open stream: No such file or directory in /usr/share/cacti/include/config.php on line 144
[Thu May 10 16:31:25 2007] [error] [client 127.0.0.1] PHP Warning:  include_once() [<a href='function.include'>function.include</a>]: Failed opening '/functions.php' for inclusion (include_path='.:/usr/share/pear:/usr/share/php') in /usr/share/cacti/include/config.php on line 144
[Thu May 10 16:31:25 2007] [error] [client 127.0.0.1] PHP Fatal error:  Call to undefined function db_connect_real() in /usr/share/cacti/include/config.php on line 150

So I made the following changes in include/config.php:

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$config["library_path"] = "/usr/share/cacti/lib";
#$config["library_path"] = ereg_replace("(.*[\/\\])include", "\\1lib", dirname(__FILE__));

After this, I got the installation pages. The first sign of trouble, although I didn't notice it at first was on the `Cacti Installation Guide' page.

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[NOT FOUND] Cacti Log File Path: The path to your Cacti log file.
/log/cacti.log

I had made sure that that file existed and that the permissions were proper before ever proceeding with the installation. I put in the absolute path, proceeded with the installation and then logged in. Upon logging in, I couldn't see any graphs. So I checked the cron file and made the appropriate changes.

Then I did an `su - cacti' and manually ran the poller.php script. Here's the output:

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PHP Warning:  mb_ereg_replace(): mbregex compile err: premature end of char-class in /usr/share/cacti/include/config.php on line 57
PHP Warning:  include_once(/lib/poller.php): failed to open stream: No such file or directory in /usr/share/cacti/poller.php on line 38
PHP Warning:  include_once(): Failed opening '/lib/poller.php' for inclusion (include_path='.:/usr/share/pear:/usr/share/php') in /usr/share/cacti/poller.php on line 38
PHP Warning:  include_once(/lib/data_query.php): failed to open stream: No such file or directory in /usr/share/cacti/poller.php on line 39
PHP Warning:  include_once(): Failed opening '/lib/data_query.php' for inclusion (include_path='.:/usr/share/pear:/usr/share/php') in /usr/share/cacti/poller.php on line 39
PHP Warning:  include_once(/lib/graph_export.php): failed to open stream: No such file or directory in /usr/share/cacti/poller.php on line 40
PHP Warning:  include_once(): Failed opening '/lib/graph_export.php' for inclusion (include_path='.:/usr/share/pear:/usr/share/php') in /usr/share/cacti/poller.php on line 40
PHP Warning:  include_once(/lib/rrd.php): failed to open stream: No such file or directory in /usr/share/cacti/poller.php on line 41
PHP Warning:  include_once(): Failed opening '/lib/rrd.php' for inclusion (include_path='.:/usr/share/pear:/usr/share/php') in /usr/share/cacti/poller.php on line 41
PHP Fatal error:  Call to undefined function exec_background() in /usr/share/cacti/poller.php on line 128

So it seems to me that the config["*_path"] variables are not being expanded properly.

The package versions are as follows:

php-5.1.6-3.5.fc6
php-mysql-5.1.6-3.5.fc6
php-snmp-5.1.6-3.5.fc6
mysql-5.0.22-2.1
mysql-server-5.0.22-2.1
httpd-2.2.3-5

Any help is greatly appreciated.

Thanks.

P.S.

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Data Query Debug Information
+ Running data query [6].
+ Found type = '4 '[script query].
+ Could not find data query XML file at '/resource/script_queries/unix_disk.xml'
+ Error parsing XML file into an array.
+ Could not find data query XML file at '/resource/script_queries/unix_disk.xml'
+ Could not find data query XML file at '/resource/script_queries/unix_disk.xml'
+ Could not find data query XML file at '/resource/script_queries/unix_disk.xml'

Hmmm.

[fmangeant]

Hi

is SELinux enabled on this server ?

[floyd_n_milan]

Hi

is SELinux enabled on this server ?

I thought of that and as far as I remember, no, I had disabled it. I'll double check again tomorrow.

Any other guesses? I'm going to try and install it on my Gentoo box now. Let's see..

[fmangeant]

Could you try that :

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mbstring.func_overload=0

in php.ini ?

[floyd_n_milan]

Could you try that :

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mbstring.func_overload=0

in php.ini ?

Sure, but that'll have to wait till I get to work tomorrow.

Meanwhile, proceeding with the installation on my home Gentoo box.

[floyd_n_milan]

Its working perfectly on my Gentoo box. I'll have to check what's wrong on FC6. I checked php.ini on Gentoo and this is what I have:

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;mbstring.func_overload = 0

Apparently its commented out. I'll post what happens on the FC6 box at work in a few hours.

Thanks for your help so far

[floyd_n_milan]

SELinux is disabled.

mbstring.func_overload was initially set to 7 on FC6. I changed it to 0. I also changed config.php to its original state. Restarted apache. Then I ran poller.php as cacti, I got this:

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Can't open perl script "/scripts/linux_memory.pl": No such file or directory
Can't open perl script "/scripts/linux_memory.pl": No such file or directory
Can't open perl script "/scripts/loadavg_multi.pl": No such file or directory
Can't open perl script "/scripts/unix_users.pl": No such file or directory
Can't open perl script "/scripts/unix_processes.pl": No such file or directory
05/11/2007 10:23:25 AM - SYSTEM STATS: Time:1.0840 Method:cmd.php Processes:1 Threads:N/A Hosts:2 HostsPerProcess:2 DataSources:5 RRDsProcessed:5
ERROR: opening '/rra/localhost_mem_buffers_3.rrd': No such file or directory
ERROR: opening '/rra/localhost_mem_swap_4.rrd': No such file or directory
ERROR: Not enough arguments
ERROR: opening '/rra/localhost_users_6.rrd': No such file or directory
ERROR: opening '/rra/localhost_proc_7.rrd': No such file or directory

[floyd_n_milan]

Update:

It's working perfectly now. Thanks a lot and allow me to congratulate you on a great piece of software. The code is beautifully written. Cheers. I'd love to help out when I know enough PHP.

Thanks again.

[colintanlk]

I have exactly the same problem. What did you do to get it working?

[floyd_n_milan]

I did exactly what was suggested.

mbstring.func_overload=0 in php.ini.

I restarted apache after this, but still had the same problem. The I restarted it again and the problem magically disappeared!