Re: Load balance three tomcats behind apache (Apache Users)

On Thu, May 20, 2010 at 5:08 PM, Tom Evans <tevans.uk@googlemail.com> wrote:

On Thu, May 20, 2010 at 12:58 PM, Mark Watts <m.watts@xxxxxxxxxxxxxxxx> wrote:
> On Thu, 2010-05-20 at 16:37 +0500, Nasir Zia wrote:
>> hi,
>>
>> how can i configure a load balancer with one apache and three tomcats
>> running behind apache.
>>
>> Apache version 2.2.15
>> tomcat version 6.0.26
>>
>> Nasir
>
> LoadModule proxy_module modules/mod_proxy.so
> LoadModule proxy_http_module modules/mod_proxy_http.so
> LoadModule proxy_ajp_module modules/mod_proxy_ajp.so
> LoadModule proxy_balancer_module modules/mod_proxy_balancer.so
>
> <Proxy balancer://localhost>
> BalancerMember ajp://server1:8009/ loadfactor=1 timeout=30
> BalancerMember ajp://server2:8009/ loadfactor=1 timeout=30
> BalancerMember ajp://server3:8009/ loadfactor=1 timeout=30
> ProxySet lbmethod=byrequests
> </Proxy>
>
> <VirtualHost 0.0.0.0:80>
> ServerName www.example.com
> ProxyPass /app/ balancer://localhost/app1/
> ProxyPassReverse /app/ balancer://localhost/app1/
>
> # Logging and other directives go here>
> </VirtualHost>
>
>

Just FYI, the balancer name (in this case 'localhost') is just a
string, it doesn't have to correspond to a hostname.

Cheers

Tom

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