I was using awstats to analyze IIS server logs. It requires Perl. At first I was using Perl installed under CygWin, but I found that it did not handle newlines properly. So I switched to ActiveState. That worked. I found out that the default IIS log format is a bit damaged. It is missing two key pieces of information that awstats needs: date(!) and bytes transferred. I wrote a Perl script that adds the correct date to the beginning of each log line (extracting it from comments in the log) and adds a zero as a dummy byte count:
my $date = "<unknown>";
foreach (<>)
{
if (/^#Date: ([^ ]*)/) { $date = $1; print $_; }
elsif (/^#/) { print $_; }
else { chomp; print $date . " " . $_ . " 0\n"; }
}
This made it possible for awstats to perform its analysis. awstats is a bit finicky about configuration. In the wwwroot/cgi-bin of the distribution, I created a configuration file named (for example), awstats.nemesis.conf (where nemesis is the host name). I changed:
- LogFile to point to the log file to analyze
- LogFormat to "date time c-ip cs-method cs-uri-stem sc-status %bytesd"
- SiteDomain to nemesis.
- DirData to ../data.
- DirIcons to <distribution directory>/wwwroot/icon
Then, I created the statistics by running this command in the cgi-bin directory:
awstats.pl -config=nemesis -update
Finally, I created the web pages with the command:
..\..\tools\awstats_buildstaticpages.pl
-config=nemesis ^
-dir=h:\desktop\zot
I had to copy the configuration file into ..\..\tools for this to work. Also, the output directory had to exist.
All-in-all, I wasn't that impressed with the reports generated.
