Basic scenario is we have 5 web servers in a cluster which I wish to centrally log.  I was pointed to syslog-ng and the linuxquestions guys 50+ readings and not 1 response so found this list and will give it a try.

Basically all the webservers are running FC5, and rpm -qa shows the following version;
syslog-ng-1.6.12-1.fc5

I see some newer versions, not sure if I should/have to, but really just want to log the different vhosts apache logs to a central server.  I read a few diff things a few places, and so far have the following conf files. 

Server.conf
options {
sync (0);
time_reopen (10);
log_fifo_size (1000);
long_hostnames (off);
use_dns (no);
use_fqdn (no);
create_dirs (no);
keep_hostname (yes);
};

source s_sys {
file ("/proc/kmsg" log_prefix("kernel: "));
unix-stream ("/dev/log");
internal();
udp(ip(0.0.0.0) port(514));
};

destination send_http_logs { file("/var/log/web.log"); };

filter send_http_logs {
program("httpd.*");
};

log {
source(s_sys);
filter(send_http_logs);
destination(send_http_logs);
};

Client.conf

options {
    sync (0);
    time_reopen (10);
    log_fifo_size (1000);
    long_hostnames (off);
    use_dns (no);
    use_fqdn (no);
    create_dirs (no);
    keep_hostname (yes);
};

source s_sys {
    file ("/proc/kmsg" log_prefix("kernel: "));
    unix-stream ("/dev/log");
    internal();
    # udp(ip(0.0.0.0) port(514));
};

destination send_http_logs { udp("192.168.2.54" port(514)); };

filter send_http_logs {
program("httpd.*");
};

log {
source(s_sys);
filter(send_http_logs);
destination(send_http_logs);
};

I restart the services and look for that web.log file and never see anything, so any help is appreciated.