# Loadbalancer returns empty result **URL:** \ **Category:** NGINX\ **Created:** [December 4, 2011, 5:30pm UTC](https://www.ruby-forum.com/t/loadbalancer-returns-empty-result/214525 "2011-12-04T17:30:41Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![luislavena](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/0ea827/32.png) [@luislavena](https://www.ruby-forum.com/u/luislavena)\ **Post date:** [December 4, 2011, 5:30pm UTC](https://www.ruby-forum.com/t/loadbalancer-returns-empty-result/214525/1 "2011-12-04T17:30:41Z")
Hi, I wanted to configure my nginx as loadbalancer for other www servers working under nginx. Loadbalancer is listening on ipv4: 192.168.0.1, www servers on ipv6. Here’s my loadbalancer config (only part of my nginx.conf) upstream loadbalancer { ip\_hash; server [IPv6]:80; } server { listen 192.168.0.1:80; server\_name wmp \*.wmp loadbalancer wmpp; location / { proxy\_pass [http://loadbalancer](http://loadbalancer); } } And here’s my ipv6 www config: server { listen [::]:80 ipv6only=on; server\_name wmp \*.wmp loadbalancer wmpp; access\_log /home/wmp/www/wmp/logs/access.log; error\_log /home/wmp/www/wmp/logs/error.log; ``` root /home/wmp/www/wmp/htdocs/; index index.php index.html; autoindex off; location ~ \.php$ { include /etc/nginx/fastcgi_params; fastcgi_index index.php; fastcgi_pass unix:/var/run/nginx/wmp.php-fpm.socket; fastcgi_param SCRIPT_FILENAME ``` $document\_root$fastcgi\_script\_name; } } Content of index.html (only this word): PLIK The host for wmpp is directly pointing for ipv6 server, other ones - loadbalancer (192.168.0.1). Here’s my wmpp reply: root@server:~# curl -v wmpp - About to connect() to wmpp port 80 (#0) - Trying IPv6… connected - Connected to wmpp (IPv6) port 80 (#0) > GET / HTTP/1.1 > User-Agent: curl/7.19.7 (x86\_64-pc-linux-gnu) libcurl/7.19.7 OpenSSL/0.9.8k > zlib/1.2.3.3 libidn/1.15 > Host: wmpp > Accept: _/_ \< HTTP/1.1 200 OK \< Server: nginx/1.0.10 \< Date: Sun, 04 Dec 2011 15:55:38 GMT \< Content-Type: text/html \< Content-Length: 5 \< Last-Modified: Sun, 27 Nov 2011 01:51:58 GMT \< Connection: keep-alive \< Accept-Ranges: bytes \< PLIK - Connection #0 to host wmpp left intact - Closing connection #0 root@server:~# And here’s reply from wmp (loadbalancer) root@server:~# curl -v wmp - About to connect() to wmp port 80 (#0) - Trying 192.168.0.1… connected - Connected to wmp (192.168.0.1) port 80 (#0) > GET / HTTP/1.1 > User-Agent: curl/7.19.7 (x86\_64-pc-linux-gnu) libcurl/7.19.7 OpenSSL/0.9.8k > zlib/1.2.3.3 libidn/1.15 > Host: wmp > Accept: _/_ - Empty reply from server - Connection #0 to host wmp left intact curl: (52) Empty reply from server - Closing connection #0 root@server:~# Loadbalancer’s log: 2011/12/04 17:03:29 [alert] 8955#0: worker process 30536 exited on signal 8 Debuglog: 2011/12/04 17:06:06 [debug] 2966#0: post event 0000000000925300 2011/12/04 17:06:06 [debug] 2966#0: delete posted event 0000000000925300 2011/12/04 17:06:06 [debug] 2966#0: accept on 192.168.0.1:80, ready: 0 2011/12/04 17:06:06 [debug] 2966#0: posix\_memalign: 00000000006F28D0:256 @16 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 accept: 192.168.0.2 fd:3 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 event timer add: 3: 60000:1323014826292 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 epoll add event: fd:3 op:1 ev:80000001 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 post event 0000000000925778 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 delete posted event 0000000000925778 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 malloc: 000000000088D370:1296 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 posix\_memalign: 000000000075F470:256 @16 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 malloc: 000000000086CF50:1024 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 posix\_memalign: 000000000081C0D0:4096 @16 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 http process request line 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 recv: fd:3 153 of 1024 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 http request line: “GET / HTTP/1.1” 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 http uri: “/” 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 http args: “” 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 http exten: “” 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 http process request header line 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 http header: “User-Agent: curl/7.19.7 (x86\_64-pc-linux-gnu) libcurl/7.19.7 OpenSSL/0.9.8k zlib/1.2.3.3 libidn/1.15” 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 http header: “Host: wmp.sored.pl” 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 http header: “Accept: _/_” 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 http header done 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 event timer del: 3: 1323014826292 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 generic phase: 0 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 rewrite phase: 1 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 test location: “/” 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 using configuration “/” 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 http cl:-1 max:1048576 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 rewrite phase: 3 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 post rewrite phase: 4 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 generic phase: 5 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 generic phase: 6 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 generic phase: 7 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 access phase: 8 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 access phase: 9 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 access phase: 10 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 post access phase: 11 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 try files phase: 12 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 http init upstream, client timer: 0 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 epoll add event: fd:3 op:3 ev:80000005 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 posix\_memalign: 0000000000747830:4096 @16 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 http script copy: "Host: " 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 http script var: “loadbalancer” 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 http script copy: " " 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 http script copy: "Connection: close " 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 http proxy header: “User-Agent: curl/7.19.7 (x86\_64-pc-linux-gnu) libcurl/7.19.7 OpenSSL/0.9.8k zlib/1.2.3.3 libidn/1.15” 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 http proxy header: “Accept: _/_” 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 http proxy header: "GET / HTTP/1.0 Host: loadbalancer Connection: close User-Agent: curl/7.19.7 (x86\_64-pc-linux-gnu) libcurl/7.19.7 OpenSSL/0.9.8k zlib/1.2.3.3 libidn/1.15 Accept: _/_ " 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 http cleanup add: 00000000007479C0 2011/12/04 17:06:06 [debug] 2966#0: \*2675647 get ip hash peer, try: 0 2011/12/04 17:06:06 [debug] 3017#0: epoll add event: fd:79 op:1 ev:00000001 2011/12/04 17:06:06 [debug] 3017#0: epoll add event: fd:36 op:1 ev:00000001 2011/12/04 17:06:06 [debug] 3017#0: epoll add event: fd:37 op:1 ev:00000001 2011/12/04 17:06:06 [debug] 3017#0: epoll add event: fd:38 op:1 ev:00000001 2011/12/04 17:06:06 [debug] 3017#0: epoll add event: fd:39 op:1 ev:00000001 Could you help me, I’ve checked everything and I’ve no idea why it isn’t working. – Marcin Janowski(WMP) ---
**Author:** ![Marcin\_SSSWMPSSSS\_J](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/8edcca/32.png) [@Marcin\_SSSWMPSSSS\_J](https://www.ruby-forum.com/u/Marcin_SSSWMPSSSS_J)\ **Post date:** [December 6, 2011, 3:31am UTC](https://www.ruby-forum.com/t/loadbalancer-returns-empty-result/214525/2 "2011-12-06T03:31:09Z")
Maybe this support is in todo list? If yes, on what version i can looking as this? 05-12-2011 10:42 użytkownik “Maxim D.” [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) napisał: ---
**Author:** ![Marcin\_SSSWMPSSSS\_J](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/8edcca/32.png) [@Marcin\_SSSWMPSSSS\_J](https://www.ruby-forum.com/u/Marcin_SSSWMPSSSS_J)\ **Post date:** [December 5, 2011, 10:42am UTC](https://www.ruby-forum.com/t/loadbalancer-returns-empty-result/214525/3 "2011-12-05T10:42:24Z")
Hello! On Sun, Dec 04, 2011 at 05:29:45PM +0100, Marcin “WMP” Janowski wrote: > Hi, I wanted to configure my nginx as loadbalancer for other www > servers working under nginx. Loadbalancer is listening on ipv4: > 192.168.0.1, www servers on ipv6. Here’s my loadbalancer config (only > part of my nginx.conf) > > upstream loadbalancer { > ip\_hash; > server [IPv6]:80; > } […] As of now, nginx doesn’t support ipv6 upstream servers. Maxim D. ---
**Author:** ![Marcin\_SSSWMPSSSS\_J](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/8edcca/32.png) [@Marcin\_SSSWMPSSSS\_J](https://www.ruby-forum.com/u/Marcin_SSSWMPSSSS_J)\ **Post date:** [December 19, 2011, 3:46pm UTC](https://www.ruby-forum.com/t/loadbalancer-returns-empty-result/214525/4 "2011-12-19T15:46:54Z")
On 12/6/11 6:30 AM, Marcin “WMP” Janowski wrote: > Maybe this support is in todo list? If yes, on what version i can > looking as this? > […] Hi Marcin, Indeed, there is such task in our long-term todo list, but it is not a priority right now. – Maxim K. +7 (910) 4293178 > **[F5 NGINX: Built for cloud-native apps. Ready for AI traffic.](https://www.f5.com/products/nginx)** > > Deliver modern applications with NGINX. Explore high-performance load balancing, API gateways, and web server solutions trusted by top global enterprises.