rowan at jetboy
Aug 10, 2012, 6:01 AM
Post #1 of 1
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Conditional logging of X-Fowarded-For in varnishncsa
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With the setup:
SSL traffic > nginx > Varnish (for load balancing) > Backend Apache
Non-SSL traffic > Varnish > Backend Apache
varnishncsa with a custom log format
For non-SSL traffic, the IP of the originating request gets logged by
varnishncsa as %h; for the SSL traffic it's 127.0.0.1. I can pass the IP
from nginx in the X-Forwarded-For header and pick it up in varnishncsa as
%{X-Forwarded-For}i. I'd like to log the contents of %{X-Forwarded-For}i if
it exists, *OR* %h if it doesn't. Seemingly, the -f command line argument
will enable this, but not with a custom format set with the -F flag. This
generates the warning "-f and -F can not be combined". Is there a way around
this?
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