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Reply to topic   Topic: Apachee Tomcat lbfactor
Author
jrparrish



Joined: 06 Oct 2010
Posts: 2

PostPosted: Wed 06 Oct '10 22:45    Post subject: Apachee Tomcat lbfactor Reply with quote

I have an issue with load balancing in Apache Tomcat 6 with mod_jk.

I have a 2 Tomcat instances sharing the load on 2 different servers.

Sticky Sessions are working fine, and they are also failing over to each server once one fails.

My only problem is that the"lbfactor" parameter is not working in my workers.properties. Tomcat or Apache does seem to recognize no matter what I put in there.

It contiues to do a round-robin to each server equally. I want it to do a 10-1. Lbfactor seems to be my only problem which is weird.

Have you any of you seen this before?

Any help is appreciated. I can copy my config files if you need to see them. I thought I would ask first and was hoping maybe somebody would have a clue to why this is happening.
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James Blond
Moderator


Joined: 19 Jan 2006
Posts: 7294
Location: Germany, Next to Hamburg

PostPosted: Thu 07 Oct '10 10:40    Post subject: Reply with quote

I know it only from the apache side, not tomcat. In apache you can set

min and max and loadfactor

e.g.
Code:

<Proxy balancer://pool1>
BalancerMember http://server1:8080 min=10 max=50 loadfactor=2

BalancerMember http://server2:8080 min=5 max=25 loadfactor=1
</Proxy>
 
ProxyPass /shop balancer://pool1 lbmethod=byrequests nofailover=Off maxattempts=3 stickysession=PHPSESSIONID


For details see http://httpd.apache.org/docs/current/mod/mod_proxy.html
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jrparrish



Joined: 06 Oct 2010
Posts: 2

PostPosted: Thu 07 Oct '10 17:29    Post subject: Reply with quote

I appreciate the prompt response. I will definitely give this a try.

So if I use mod_proxy, and disable mod_jk, do I just need to comment out the mod_jk module in httpd.conf?

Do I need to delete config file parameters or will just commenting it out take care of everything?

Thanks.
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James Blond
Moderator


Joined: 19 Jan 2006
Posts: 7294
Location: Germany, Next to Hamburg

PostPosted: Thu 07 Oct '10 17:37    Post subject: Reply with quote

You have to comment out the module and the relevant code.

Back to the mod_jk problem. How did you set it up? Did you configure the JkWorkersFile? I guess you did cause the other properties seem to work as from your description.
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