Hello,
I am trying to set up httpd (v2.2.0) as a load balancer (for development
testing, poc stuff) using the mod_proxy_balancer (and appropriate
dependencies). I am fronting a J2EE applications running under tomcat 5.5.15
on two machines.
I seem to have it working for the most part, but am confused by a couple of
things:
1. The URL in the web browser changes when I access the LB, that is the LB
actually does a client side redirect:
For example the URL I use is
192.168.1.1:8080/myProject
but when the page renders, the URL is now
192.168.1.2:8080/myProject
or
192.168.1.3:8080/myProject
What I want to achieve is, have the URL remain in the context of the LB/proxy
(or reverse proxy), so that if machine 1 goes away the LB can redirect to
another machine. 'Cause right now the user will have to enter the URL of the
LB to get to the app if something fails.
2. In the segment below, there is a section "<Location /tc-bal>" that seems to
be needed. I do not understand why? I crafted this using the examples config
files with the install for win32.
Thx in advance for help ...
Regards,
Douglas WF Acheson
<!-- snip snip -->
<IfModule !proxy_module>
LoadModule proxy_module modules/mod_proxy.so
</IfModule>
#<IfModule !proxy_ajp_module>
# LoadModule proxy_ajp_module modules/mod_proxy_ajp.so
#</IfModule>
<IfModule !proxy_http_module>
LoadModule proxy_http_module modules/mod_proxy_http.so
</IfModule>
<IfModule !proxy_balancer_module>
LoadModule proxy_balancer_module modules/mod_proxy_balancer.so
</IfModule>
# ---------------------------------------------------------------------------- #
# Define the tomcat load balancer #
# ---------------------------------------------------------------------------- #
<IfModule proxy_balancer_module>
ProxyRequests off
<Proxy balancer://bpsCluster>
BalancerMember http://192.168.1.1:8080 loadfactor=50
BalancerMember http://192.168.1.3:8080 loadfactor=50
Order Deny,Allow
Allow from all
</Proxy>
<Location /tc-bal>
ProxyPass balancer://myCluster stickysession=jsessionid
</Location>
<Location /balancer-manager>
SetHandler balancer-manager
Order Deny,Allow
Allow from all
</Location>
<Location /BpsProject>
ProxyPass balancer://myCluster/myProject
ProxyPassReverse balancer://myCluster/myProject
Order Deny,Allow
Allow from all
</Location>
</IfModule>
Regards,
Douglas WF Acheson
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