Brad.Taylor at TELUS
Jul 19, 2012, 2:49 PM
Post #1 of 1
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reverse proxy mod_proxy_balancer inside vhosts - balancer-manager oddity
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Newbie to the list, thanks for any suggestions.
I'm seeing some odd behavior when running mod_proxy_balancer and the balancer-manager handler.
I get duplicated balancer definitions in the /balancer-manager UI, with the second configuration set having no balancer members.
I've read the doc pages, googled and searched the mail-list archives. (I do see one report of similar behavior from July 2011:
http://httpd.markmail.org/message/vyw6gdldkhhkegkv?q=balancer-manager+duplicate+balancer+entry+order:date-backward)
The goal is to
- have some common URL's directed to a single backend server for both HTTP & HTTPS vhosts
- have other common URL's directed to a balanced worker configuration for both HTTP & HTTPS vhosts
- have a particular other common URL directed to a different balanced worker on a vhost server with a different name
Running Apache HTTP 2.2.21 on Windows Server 2008
Have three vhosts configured with two different server names:
- app.internal.tld / HTTP / TCP port 80
- app.internal.tld / HTTPS / TCP port 443
- webservices.internal.tld / HTTP / TCP port 80
Have a bunch of simple ProxyPass statements and two balancers configured outside the vhost config stanzas.
In both app.internal.tld vhosts have balanced configuration for /mainapp pointed to the "end-user" balancer worker.
In the webservices.internal.tld vhost config, have the balanced configuration for /mainapp pointed to the "web-services" balancer worker.
Simplified config is something like this:
<Proxy balancer://web_services>
BalancerMember http://server1 route=node1
ProxySet ...
</Proxy>
<Proxy balancer://end_user>
BalancerMember http://server1 route=node1
BalancerMember http://server2 route=node2
ProxySet ...
</Proxy>
ProxyPass /url1 http://server1/url1
ProxyPassReverse /url1 http://server1/url1
ProxyPass /url2 http://server1/url2
ProxyPassReverse /url2 http://server1/url2
ProxyPass /url3 http://server2/url3
ProxyPassReverse /url3 http://server2/url3
NameVirtualHost 192.168.3.1:80
<VirtualHost 192.168.3.1:80>
ServerName app.internal.tld
ProxyPass /mainapp balancer://end_user/mainapp
ProxyPassReverse /mainapp balancer://end_user/mainapp
</VirtualHost>
<VirtualHost 192.168.3.1:80>
ServerName webservices.internal.tld
ProxyPass /mainapp balancer://web_services/mainapp
ProxyPassReverse /mainapp balancer://web_services/mainapp
</VirtualHost>
<VirtualHost 192.168.3.1:443>
ServerName app.internal.tld
ProxyPass /mainapp balancer://end_user/mainapp
ProxyPassReverse /mainapp balancer://end_user/mainapp
</VirtualHost>
Everything appears to work correctly, except for balancer manager, which gets an extra entry for the balancer://end_user, that has no child members.
So I have the following questions:
1. Is there a better way to do this?
2. Is there a bug in balancer-manager?
I've attached the following files:
a. simplified config file
b. /server-status output
c. /balancer-manager output
Thanks again for any suggestions or recommendations.
--
Brad Taylor
brad dot taylor at telus dot com
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Apache Status - sample.html
httpd-sample.conf
