On Thursday 02 August 2007 17:07, Carl Johnstone wrote: > The problem I've got is that I'd like to put the user_id in the access logs > so that our log analysis software can make use of it. > > Setting apache->user correctly logs the user at the back-end however the IP > addresses are wrong, being the internal address of the front-end proxy. > Also requests dealt with purely at the front-end aren't logged. > > Logging at the front-end means all requests are logged with the right IP > address. Additional bonuses for me are that those servers are less loaded, > and I'd be able to turn off logging at the back-end. However the user_id > isn't available. > > Is there any easy way to pass the user_id from the back-end in such a way > the front-end could log it? Or is there another option?
I'd try to put the user_id in a X-... output header on the backend and log it
as "%{X-...}o" on the frontend. Maybe you can even use mod_headers to remove
the header before it reaches the browser.
Torsten
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