I'm setting up a virtual hosting environment with mod_vhost_alias, so I've got to manually split up log files for each client. I figured that would be really simple, and discovered that it was. All I had to do was write a script that takes input on STDIN and have it do what I need to. The Apache group has split-logfiles which theoretically does this. But I'm running into a peculiar problem. When I put it into my Apache log files with: 
CustomLog "|/opt/apache/logs/split-logfiles" combined

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It opens each file that it is supposed to, but then none of the log entries get written. I decided to do some testing of my own and wrote this: 
#!/usr/bin/perl
$isopen = 0;
while ($log_line = <STDIN>) {
    $myfile = "/var/tmp/test.log";
    unless($isopen and -f $myfile) {
      open MYHAPPYFILE, ">$myfile" or die "Error opening $myfile";
      $isopen = 1;
    }

    printf MYHAPPYFILE "%s", $log_line;
}
exit 0;

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And when I put that into apache instead of split-logfiles, it does the same thing: /var/tmp/test.log gets created but none of the log entries get put into it. When I tried printing to STDERR instead of MYHAPPYFILE, it showed up fine in the error log. Any ideas?

In reply to Apache log pipe doesn't write to log files by SamQi

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