LoadModule proxy_balancer_module modules/mod_proxy_balancer.so
LoadModule proxy_module modules/mod_proxy.so
LoadModule proxy_http_module modules/mod_proxy_http.so
<Proxy balancer://mycluster>
BalancerMember http://localhost:8091
BalancerMember http://localhost:8092
</Proxy>
ProxyPass /pbs balancer://mycluster