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Posted to users@httpd.apache.org by Peter Buning <bu...@kicktipp.de> on 2009/08/27 16:41:48 UTC
[users@httpd] mod_proxy_balancer
Hi,
we are using Apache 2.2 as a Proxy and mod-proxy_balancer for load
balancing.
We want share the load between two tomcats. One Tomcat for users 'a-l'
and another tomcat for users 'm-z' (That's for optimize caching). If one
tomcat is not available, the other should take the load. So our
httpd.conf looks like that:
<Proxy balancer://cluster_a-l>
BalancerMember http://localhost:8082 status=-H
BalancerMember http://localhost:8083 status=H
Order Deny,Allow
Allow from all
</Proxy>
<Proxy balancer://cluster_m-z>
BalancerMember http://localhost:8083 status=-H
BalancerMember http://localhost:8082 status=H
Order Deny,Allow
Allow from all
</Proxy>
ProxyPassMatch ^/[a-l] balancer://cluster_a-l
stickysession=JSESSIONID|jsessionid
ProxyPassMatch ^/[m-z] balancer://cluster_m-z
stickysession=JSESSIONID|jsessionid
Now I've got two questions:
1. What is the difference between status an lbset?
It works too, if I change the conf to this:
<Proxy balancer://cluster_a-l>
BalancerMember http://localhost:8082 lbset=1
BalancerMember http://localhost:8083 lbset=2
Order Deny,Allow
Allow from all
</Proxy>
<Proxy balancer://cluster_m-z>
BalancerMember http://localhost:8083 lbset=1
BalancerMember http://localhost:8082 lbset=2
Order Deny,Allow
Allow from all
</Proxy>
2. I get the following warnings:
[warn] worker http://localhost:8083 already used by another worker
[warn] worker http://localhost:8082 already used by another worker
I understand the message: Both workers are used twice, once per
balancer. But I don't understand the message as a warning. I don't know
how this config can cause problems?
Thanks for all answers and infos.
Kind regards
Peter
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