Fresh install of Ispconfig 3.0.1.1 on CentOS 5, things appear to be working however the ispconfig web interface periodically becomes unusable, only blank pages show up, cannot log in due to javascript errors and so forth. Restarting apache temporarily resolves. Also, the following repeatedly appears in /var/log/httpd/error_log: Argument "-" isn't numeric in numeric gt (>) at /usr/sbin/vlogger line 456, <STDIN> line 18 I tried this: http://www.how2forge.org/forums/showthread.php?t=27188 but no real difference, same error shows up in the error_log perl-TimeDate is installed which vlogger outputs: /usr/sbin/vlogger the above two items I have seen mentioned in other threads where the problem appeared similar.
Solution I had the same problem. For me, the right solution for this problem is to change only one letter %b from lowercase to uppercase in file /etc/httpd/conf/sites-available/ispconfig.conf, in LogFormat line. Change: LogFormat "%v %h %l %u %t \"%r\" %>s %b \"%{Referer}i\" \"%{User-Agent}i\"" combined_ispconfig to this LogFormat "%v %h %l %u %t \"%r\" %>s %B \"%{Referer}i\" \"%{User-Agent}i\"" combined_ispconfig Lowercase b to uppercase B. It looks that vlogger does not understand dash - when it's zero it must be zero. As it is written here already: http://httpd.apache.org/docs/1.3/mod/mod_log_config.html %B (Bytes sent, excluding HTTP headers), %b (Bytes sent, in CLF format i.e. a '-' rather than a 0 when no bytes are sent)
