Hello! On Mon, Oct 19, 2015 at 07:23:00AM -0400, Pauls V wrote:
> Problem: Nginx returns 400 on small amount of POST requests (1-5 per minute > from 10k POST requests) > Setup: Nginx in front of Tomcat > Version: 1.8.0 (upgraded from 1.4.6 that had the same problem) > Log format: log_format main $remote_addr - $remote_user [$time_local] > $request $status $request_length $body_bytes_sent $request_time > $http_referer $http_user_agent $http_x_forwarded_for $upstream_response_time > $upstream_status; [...] > 400 257 0 59.711 - - 11.11.11.11 - - > 22.22.22.22 - - [19/Oct/2015:10:14:35 +0000] POST /json/some.json HTTP/1.1 > 400 255 0 59.536 - - 11.11.11.11 - - > > What I have checked: > - the log shows that reqest wasn't sent to tomcat. Tested and tomcat > processes all requests under 200ms. > - nothing is written to error_log (tried info and warn) > - the general answer of increasing large_client_header_buffers size doesn't > seem valid here as $request_length is not close to max(in case someone can > suggest a way of replicating these requests then I can test on 2nd > environment) > > 1. Why is Nginx replying with HTTP 400 in 0.019s for $request_length 430? > 2. Why is there up to 60s $request_time? It looks like at 60s ELB kills it > and returns 5xx to client. Try looking into error logs, they should have reasons for 400 responses logged. You'll have to configure "info" logging level though. -- Maxim Dounin http://nginx.org/ _______________________________________________ nginx mailing list nginx@nginx.org http://mailman.nginx.org/mailman/listinfo/nginx
