Collapsing Empty Variables in Nginx Access Log When Using TAB Delimiter
nginx-forum at nginx.us
Tue Mar 6 19:00:45 UTC 2012
I'm noticing that Nginx's log module is "collapsing" empty log variables
primarily when using a TAB (\t) as a delimiter in the access log.
For example, if I use the following:
'$server_name $msec $remote_addr $cookie_x $cookie_y $cookie_z $status';
And a request does not have any cookies set (so $cookie_x, $cookie_y,
and $cookie_z would be empty), then I would get a log line like this:
myserver.com 1331049809.478 10.10.15.50 - 200
I was expecting:
myserver.com 1331049809.478 10.10.15.50 - - - 200
The same thing happens with the $http_referer (when not set by the UA)
and $upstream_addr (when serving static files).
Here's a link to my access log configuration:
I'm using Nginx v1.1.16.
Has anyone experienced this before?
Posted at Nginx Forum: http://forum.nginx.org/read.php?2,223532,223532#msg-223532
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