Conditional Logging ( using varnishncsa )

[Maninder Singh]

Hi,

We have logging turned on using varnishncsa.

/usr/bin/varnishncsa -a -w /var/log/varnish/varnishncsa.log -D -f
/etc/sysconfig/varnishncsa

Here is what's defined in varnishncsa

%{X-Forwarded-For}i %l %u %t %D \"%r\" %s %b \"%{Referer}i\"
\"%{User-agent}i\" \"%{Host}i\" %{Varnish:hitmiss}x

However, this would log EVERY request that goes through varnish.

We have a monitoring server that hits it aggressively ( and also static
files ).

x.x.x.x - - [07/Nov/2019:00:22:53 -0600] 2080 "GET
http://localhost/index.php HTTP/1.0" 200 8 "-" "HTTP-Monitor/1.1" "-" miss
x.x.x.x - - [07/Nov/2019:00:22:58 -0600] 2472 "GET
http://localhost/index.php HTTP/1.0" 200 8 "-" "HTTP-Monitor/1.1" "-" miss
x.x.x.x - - [07/Nov/2019:00:22:59 -0600] 1919 "GET
http://localhost/index.php HTTP/1.0" 200 8 "-" "HTTP-Monitor/1.1" "-" miss

Is there a way in which I can exclude these from varnish logs ?

In apache I would just do

 SetEnvIf Request_URI
"\.(jpeg|jpg|xml|png|gif|ico|js|css|swf|woff|ttf|eot\?|js?.|css?.)$" DontLog
 SetEnvIfNoCase User-Agent "(HTTP-Monitor)" DontLog
 CustomLog /var/www/logs/access_80_log combined env=!DontLog

This would otherwise just keep filling up the logs.

Let me know.

Thanks.
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