syslog 5.2 no display for cacti 0.8.7b

[kinfio117]

#vi include/config.php
$plugins = array();
$plugins[] = 'monitor';
//$plugins[] = 'syslog';
$plugins[] = 'settings';
$plugins[] = 'syslog';
#vi syslog/config.php
$syslogdb_type = 'mysql';
$syslogdb_default = 'syslog';
$syslogdb_hostname = 'localhost';
$syslogdb_username = 'cacti';
$syslogdb_password = 'cacti';
# chown cacti.cacti /var/www/html/cacti

some error: I don't know how to:
[root@localhost syslog]# php setup.php
PHP Notice: Undefined variable: config in /var/www/html/cacti/plugins/syslog/setup.php on line 200
PHP Warning: include_once(/plugins/syslog/compatibility.php): failed to open stream: No such file or directory in /var/www/html/cacti/plugins/syslog/setup.php on line 200
PHP Warning: include_once(): Failed opening '/plugins/syslog/compatibility.php' for inclusion (include_path='.:/usr/share/pear') in /var/www/html/cacti/plugins/syslog/setup.php on line 200


version
os centos5.1
cacti-0.8.7b.tar.gz
cacti-plugin-arch.tar.gz for 0.8.7b
settings-0.5.tar.gz
syslog-0.5.2.tar.gz

I'm new uer. this problem solution for someboby help me, thank you!console->User Management->admin->Realm Permissions->view syslog

[TheWitness]

Not sure what you are asking, but that version of syslog is not PIA 2.x compliant. Also, there is quite a bit of additional work you must perform to get it operational, such as installing syslog-ng, setting up a socket file and modifying the plugins config.php file.

TheWitness