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I have juste install nginx for my website, and everything is working well and very fast :)

But i have this kind of error in my access log :

IP - - [30/Dec/2011:11:06:00 +0000] - "-" 400 0 "-" "-"

IP - - [30/Dec/2011:11:06:10 +0000] - "-" 400 0 "-" "-"

IP - - [30/Dec/2011:11:06:20 +0000] - "-" 400 0 "-" "-"

IP - - [30/Dec/2011:11:06:30 +0000] - "-" 400 0 "-" "-"

This error is caused by my loadbalancer, which is one of amazon ec2 LB. And i haven't find any solution to resolve this problem.

Due to this error my log is growing very fast. What can I do for exlude it from my log ?

Thanks for your help.

And happy new year (with anticipation !!!).

share|improve this question
You should solve the problem rather than treating the symptoms. What's your 'ping path' for your ELB's HTTP health check? Make sure that it begins with a slash, .e.g. "/index.html", otherwise it may not be considered a valid HTTP request and hence the 400 errors. – James Little Dec 30 '11 at 11:53
Ok my ping path is a html file and the path is starting with a slash. like /toto.html (and there is just some text in this file) Thanks for your help :) – Clabman Dec 30 '11 at 14:04
Hmm, I would be tempted to do a tcpdump of your http traffic to see what could be causing the errors; something unusual in the http headers perhaps. Also, could be related to large cookies:…. – James Little Dec 31 '11 at 9:37
Ok, thanks for your help, i have try to play with this instructions large_client_header_buffers and it didn't change anything. Do you think i can exlude from the log just my htlm health check file ? thanks for you help – Clabman Jan 2 '12 at 14:25
Upgrade nginx to a newer version. see:… – Meekohi Aug 13 '13 at 21:19
up vote 0 down vote accepted

If you have not stopped these entries by adjusting your LB's polling of your server, you can use Apache's SetEnvIf to do conditional logging.

I have some clients who use this for certain image directories. They have graphic rich sites and images are >95% of the hits. The logs were GB's per day before excluding the images.

In your case, you could probably exclude by IP address.

EDIT: Sorry mis-read. Nginx has a log not found option:

This turns off 404 in the error log. You can then use a location directive:

location ~* ^.+\.(jpg|jpeg|gif)$ 
{ root /var/www/html; 
*access_log off;* 
share|improve this answer
Thanks, but i am working with nginx.... – Clabman Jan 2 '12 at 14:27
Sorry misread. Thought you were using Nginx to LB to Apache systems. – jeffatrackaid Jan 2 '12 at 16:36
thanks for your edit, I am trying to use this option. thanks again, i think it is the solution for my case ! – Clabman Jan 3 '12 at 15:22
This is not a solution, it only removes 404 errors, not 400 errors. – Meekohi Aug 7 '13 at 18:33

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