I am using apache 2.2.4 as a reverse proxy server in my DMZ. The Proxy Balancer appears to work great when the two BalancerMember servers are up. But if I shut one down, It takes roughly 30-45 seconds to get anything to load on my site every time I load a page. Here is my configuration:
ServerName mywebsite.com
ProxyRequests Off
<Proxy *>
Order deny, allow
Allow from all
</Proxy>
<Proxy balancer://mycluster>
BalancerMember http://10.10.10.10:80/outside loadfactor=1 retry=60
BalancerMember http://10.10.10.11:80/outside loadfactor=1 retry=60
</Proxy>
ProxyPass /outside balancer://mycluster/
ProxyPassReverse /outside balancer://mycluster/
ProxyPass /balancer-manager !
<Location /balancer-manager>
SetHandler balancer-manager
</Location>
The server acts as a reverse proxy for REST services that sit behind it. When I load the web application, it calls the
REST services multiple times, so I don't know if that could also be causing the slowness, as the Proxy is getting hit with many requests at once.
Best Answer
Set a
ProxyTimeoutto just a few seconds - what's happening is that it's sitting there trying connections to the down backend for a long while, not timing out.Setting something like
ProxyTimeout 3will cause the connection to fail more quickly, then yourretry=60setting will cause the down server to not be used again for the next minute.