# How to use nginx as loadbalancer for different webserver? **URL:** \ **Category:** NGINX\ **Created:** [April 21, 2013, 8:31am UTC](https://www.ruby-forum.com/t/how-to-use-nginx-as-loadbalancer-for-different-webserver/228409 "2013-04-21T08:31:01Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![SSJSSrg\_KastningSS\_S](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/c89c15/32.png) [@SSJSSrg\_KastningSS\_S](https://www.ruby-forum.com/u/SSJSSrg_KastningSS_S)\ **Post date:** [April 21, 2013, 8:31am UTC](https://www.ruby-forum.com/t/how-to-use-nginx-as-loadbalancer-for-different-webserver/228409/1 "2013-04-21T08:31:01Z")
Hello all. I’m new to this maillinglist as to nginx as well. I setup a nginx to run as a loadbalancer with just adding the following lines to my /etc/nginx/nginx\_conf. This config works fine. http { upstream loadbalancer1 { server 192.168.0.1:80; server 192.168.0.2:80; } server { listen 80; server\_name [www.example.com](http://www.example.com) [example.com](http://example.com); location / { proxy\_pass [http://loadbalancer1](http://loadbalancer1); } } Please note, that [example.com](http://example.com) isn’t my real domain. So that’s not the error. 😉 Now I tried to add a second site which is hosted on two different webservers. My configuration in /etc/nginx/nginx\_conf looks like the following now. http { upstream loadbalancer1 { server 192.168.0.1:80; server 192.168.0.2:80; } server { listen 80; server\_name [www.example.com](http://www.example.com) [example.com](http://example.com); location / { proxy\_pass [http://loadbalancer1](http://loadbalancer1); } } upstream loadbalancer2 { server 192.168.0.3:80; server 192.168.0.4:80; } server { listen 80; server\_name [www.anyway.com](http://www.anyway.com) [anyway.com](http://anyway.com); location / { proxy\_pass [http://loadbalancer2](http://loadbalancer2); } }} But if I try to get [www.anyway.com](http://www.anyway.com) it didn’t work and I got a request timeout. Could somebody please tell me, what’s wrong with my configuration? Best Regards Joerg ---
**Author:** ![SSJSSrg\_KastningSS\_S](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/c89c15/32.png) [@SSJSSrg\_KastningSS\_S](https://www.ruby-forum.com/u/SSJSSrg_KastningSS_S)\ **Post date:** [April 21, 2013, 8:40am UTC](https://www.ruby-forum.com/t/how-to-use-nginx-as-loadbalancer-for-different-webserver/228409/2 "2013-04-21T08:40:22Z")
Try telnetting to port 80 on 192.168.0.3 and .4 to check they’re listening, and that [www.anyway.com](http://www.anyway.com) resolves correctly… On Sun, 2013-04-21 at 08:29 +0200, Jörg Kastning wrote: > ``` > server 192.168.0.2:80; > > ``` > > Please note, that [example.com](http://example.com) isn’t my real domain. So that’s not the error. 😉 > server 192.168.0.2:80; > upstream loadbalancer2 { > } > > * * * > > nginx mailing list > [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) > [mailman.nginx.org archive](http://mailman.nginx.org/mailman/listinfo/nginx) – Steve H. BSc(Hons) MIITP > **[Linux & Admin Support Services | "Services provided by people who are proud...](https://www.greengecko.co.nz)** > > Offers linux support services, systems and database administration, consultancy and the full development lifecycle for open source - based solutions Skype: sholdowa ---
**Author:** ![SSJSSrg\_KastningSS\_S](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/c89c15/32.png) [@SSJSSrg\_KastningSS\_S](https://www.ruby-forum.com/u/SSJSSrg_KastningSS_S)\ **Post date:** [April 21, 2013, 10:22am UTC](https://www.ruby-forum.com/t/how-to-use-nginx-as-loadbalancer-for-different-webserver/228409/3 "2013-04-21T10:22:00Z")
can you make sure that [anyway.com](http://anyway.com) ist reachable? sounds like the path to your front-lb is somehow not working. i think i dont need to ask for an nginx-restart after config-changes? if you upstream-config is messy or your upstream-servers are unreachable you should usually see a: 502 Bad Gateway regards, mex Posted at Nginx Forum: > **[Re: How to use nginx as loadbalancer for different webserver?](https://forum.nginx.org/read.php?2,238509,238511#msg-238511)** > > Hello all. I'm new to this maillinglist as to nginx as well. I setup a nginx to run as a loadbalancer with just adding the following lines to my /etc/nginx/nginx\_conf. This config works fine. http { upstream loadbalancer1 { server 192.168.0.1:8 ---
**Author:** ![SSJSSrg\_KastningSS\_S](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/c89c15/32.png) [@SSJSSrg\_KastningSS\_S](https://www.ruby-forum.com/u/SSJSSrg_KastningSS_S)\ **Post date:** [April 22, 2013, 8:39am UTC](https://www.ruby-forum.com/t/how-to-use-nginx-as-loadbalancer-for-different-webserver/228409/4 "2013-04-22T08:39:02Z")
Hi. I found the mistake. The Firewall-Policy was configured but the used Host-Object was wrong. There were the wrong ip addresses for my webservrs added. I changed this and can reach my webservers now. Thanks for your help. Mit freundlichen Gren Jrg Kastning IT-Systemadministrator SYNAXON AG Falkenstrae 31 33758 Schlo Holte-Stukenbrock Fon: +49(0)5207 9299-282 Fax +49(0)5207 9299-296 mailto: removed\_email\_address@domain.invalid XMPP: removed\_email\_address@domain.invalid Vorstand: Frank Roebers (Vorsitzender), Andreas Wenninger, Mark Schrder Aufsichtsratsvorsitzender: Dr. Gnter Lewald Handelsregister Bielefeld HRB 36014 Weitere Infos unter: [http://www.synaxon.de](http://www.synaxon.de) 2013/4/21 mex [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)