# Nginx + haproxy + mongrel - issue persists **URL:** \ **Category:** NGINX\ **Created:** [December 4, 2008, 6:43am UTC](https://www.ruby-forum.com/t/nginx-haproxy-mongrel-issue-persists/154817 "2008-12-04T06:43:25Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Asif\_A](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/858c86/32.png) [@Asif\_A](https://www.ruby-forum.com/u/Asif_A)\ **Post date:** [December 4, 2008, 6:43am UTC](https://www.ruby-forum.com/t/nginx-haproxy-mongrel-issue-persists/154817/1 "2008-12-04T06:43:25Z")
We have configured nginx + haproxy + mongrels [ more than 150 instances]. While it works perfectly fine for small configuration, a larger set of mongrels - fail completely. I have attached the configuration file for your reference. Apologies for the inconvenience if this is coming into the wrong list. Each of those servers are 16G RAM, Quad Core, Dual Processor Machines by Dell. So - the memory shouldn’t really be a problem. Although someone did mention that ip\_conntrack module might be a problem. I am not sure what the issue is and not able to understand - why haproxy is unable to route requests. Can you please tell me if there could be some other issue? All the servers are marked DOWN even through they’re up Nov 21 14:08:46 mw-server9 haproxy[323]: Server rails\_proxy/mon170 is DOWN. 0 active and 0 backup servers left. 0 sessions active, 0 requeued, 0 remaining in queue. Nov 21 14:08:46 mw-server9 haproxy[323]: Proxy rails\_proxy has no server available ! Nov 21 14:08:49 mw-server9 haproxy[323]: Server rails\_proxy/mon078 is DOWN. 0 active and 0 backup servers left. 0 sessions active, 0 requeued, 0 remaining in queue. Nov 21 14:08:49 mw-server9 haproxy[323]: Proxy rails\_proxy has no server available ! Nov 21 14:08:54 mw-server9 haproxy[323]: Server rails\_proxy/mon166 is DOWN. 0 active and 0 backup servers left. 0 sessions active, 0 requeued, 0 remaining in queue. Nov 21 14:08:54 mw-server9 haproxy[323]: Proxy rails\_proxy has no server available ! Nov 21 14:08:54 mw-server9 haproxy[323]: Server rails\_proxy/mon167 is DOWN. 0 active and 0 backup servers left. 0 sessions active, 0 requeued, 0 remaining in queue. Nov 21 14:08:54 mw-server9 haproxy[323]: Proxy rails\_proxy has no server available ! Nov 21 14:08:56 mw-server9 haproxy[323]: Server rails\_proxy/mon081 is DOWN. 1 active and 0 backup servers left. 0 sessions active, 0 requeued, 0 remaining in queue. Nov 21 14:08:56 mw-server9 haproxy[323]: Server rails\_proxy/mon089 is DOWN. 0 active and 0 backup servers left. 0 sessions active, 0 requeued, 0 remaining in queue. Nov 21 14:08:56 mw-server9 haproxy[323]: Proxy rails\_proxy has no server available ! Nov 21 14:09:01 mw-server9 haproxy[323]: Server rails\_proxy/mon155 is DOWN. 0 active and 0 backup servers left. 0 sessions active, 0 requeued, 0 remaining in queue. Nov 21 14:09:01 mw-server9 haproxy[323]: Proxy rails\_proxy has no server available ! Nov 21 14:09:01 mw-server9 haproxy[323]: Server rails\_proxy/mon074 is DOWN. 0 active and 0 backup servers left. 0 sessions active, 0 requeued, 0 remaining in queue. Nov 21 14:09:01 mw-server9 haproxy[323]: Proxy rails\_proxy has no server available ! Nov 21 14:09:04 mw-server9 haproxy[323]: Server rails\_proxy/mon124 is DOWN. 0 active and 0 backup servers left. 0 sessions active, 0 requeued, 0 remaining in queue. Nov 21 14:09:04 mw-server9 haproxy[323]: Proxy rails\_proxy has no server available ! Nov 21 14:09:04 mw-server9 haproxy[323]: Server rails\_proxy/mon162 is DOWN. 0 active and 0 backup servers left. 0 sessions active, 0 requeued, 0 remaining in queue. Nov 21 14:09:04 mw-server9 haproxy[323]: Proxy rails\_proxy has no server available ! Nov 21 14:09:04 mw-server9 haproxy[323]: Server rails\_proxy/mon142 is DOWN. 0 active and 0 backup servers left. 0 sessions active, 0 requeued, 0 remaining in queue Nov 21 14:10:16 mw-server9 haproxy[323]: Server rails\_proxy/mon090 is DOWN. 74 active and 0 backup servers left. 0 sessions active, 0 requeued, 0 remaining in queue. Nov 21 14:10:16 mw-server9 haproxy[323]: Server rails\_proxy/mon095 is DOWN. 73 active and 0 backup servers left. 0 sessions active, 0 requeued, 0 remaining in queue. Nov 21 14:10:16 mw-server9 haproxy[323]: Server rails\_proxy/mon118 is DOWN. 72 active and 0 backup servers left. 0 sessions active, 0 requeued, 0 remaining in queue. Nov 21 14:10:16 mw-server9 haproxy[323]: Server rails\_proxy/mon079 is DOWN. 71 active and 0 backup servers left. 0 sessions active, 0 requeued, 0 remaining in queue. Nov 21 14:10:16 mw-server9 haproxy[323]: Server rails\_proxy/mon096 is DOWN. 70 active and 0 backup servers left. 0 sessions active, 0 requeued, 0 remaining in queue. Nov 21 14:10:16 mw-server9 haproxy[323]: Server rails\_proxy/mon162 is DOWN. 69 active and 0 backup servers left. 0 sessions active, 0 requeued, 0 remaining in queue. Nov 21 14:10:16 mw-server9 haproxy[323]: Server rails\_proxy/mon125 is DOWN. 68 active and 0 backup servers left. 0 sessions active, 0 requeued, 0 remaining in queue ---
**Author:** ![Asif\_A](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/858c86/32.png) [@Asif\_A](https://www.ruby-forum.com/u/Asif_A)\ **Post date:** [December 4, 2008, 7:29am UTC](https://www.ruby-forum.com/t/nginx-haproxy-mongrel-issue-persists/154817/2 "2008-12-04T07:29:07Z")
On Thu, Dec 04, 2008 at 10:59:19AM +0530, Asif A. wrote: > Although someone did mention that ip\_conntrack module might be a problem. > 0 active and 0 backup servers left. 0 sessions active, 0 requeued, 0 > remaining in queue. > […] These are all haproxy error messages, probably best to send this to the haproxy list. enjoy, -jeremy ---
**Author:** ![Asif\_A](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/858c86/32.png) [@Asif\_A](https://www.ruby-forum.com/u/Asif_A)\ **Post date:** [December 4, 2008, 6:32pm UTC](https://www.ruby-forum.com/t/nginx-haproxy-mongrel-issue-persists/154817/3 "2008-12-04T18:32:15Z")
Asif- We are working on a new nginx balancer module that emulates haproxy’s maxconns setting. So far it is testing out very well. Please give it a try and see if it might be the right solution for you: > **[GitHub - ezmobius/nginx-ey-balancer: nginx max connections queue](https://github.com/ezmobius/nginx-ey-balancer/tree/master)** > > master Cheers- -Ezra On Dec 3, 2008, at 9:29 PM, Asif A. wrote: > Although someone did mention that ip\_conntrack module might be a > Nov 21 14:08:46 mw-server9 haproxy[323]: Server rails\_proxy/mon170 > is DOWN. 0 active and 0 backup servers left. 0 sessions active, 0 > requeued, 0 remaining in queue. > Nov 21 14:09:01 mw-server9 haproxy[323]: Server rails\_proxy/mon074 > is DOWN. 0 active and 0 backup servers left. 0 sessions active, 0 > is DOWN. 73 active and 0 backup servers left. 0 sessions active, 0 > Nov 21 14:10:16 mw-server9 haproxy[323]: Server rails\_proxy/mon162 > is DOWN. 69 active and 0 backup servers left. 0 sessions active, 0 > requeued, 0 remaining in queue. > Nov 21 14:10:16 mw-server9 haproxy[323]: Server rails\_proxy/mon125 > is DOWN. 68 active and 0 backup servers left. 0 sessions active, 0 > requeued, 0 remaining in queue Ezra Z. removed\_email\_address@domain.invalid