[rt-users] Load balancer and RT

[Raed El-Hames]

Thierry:

We don't use proxy , we use linux virtual servers and keepalived to balance the traffic into 2 RT web servers.
I am sorry I have no real experience with using Proxy so cannot help you. 
In our case keepalived takes care of maintaining session state, when ever we tested a failure of the web servers, the users RT session were not interrupted with the exception of little glitch when the network adjusted itself.

Our each RT instance is a <VirtualHost rt.mycompany.com:443> , the rest of the RT apache configuration is similar to yours. 

Roy


> -----Original Message-----
> From: Thierry Thelliez [mailto:thierry.thelliez.tech at gmail.com]
> Sent: 03 February 2011 18:31
> To: Raed El-Hames
> Cc: rt-users at lists.bestpractical.com
> Subject: Re: [rt-users] Load balancer and RT
> 
> Roy,
> 
> Thanks for your answer.  Could you please tell me more about your
> proxy settings?
> 
> We have a virtual host definition like the following.  Yesterday we
> started adding the ProxyPreserveHost, ProxyVia,
> ProxyPassReverseCookieDomain while chasing the session mix up issues.
> It is still happening although very rarely.  And it is hard to
> reproduce on demand... This virtual host points to two RT instances.
> 
>     RewriteEngine on
>     RewriteRule ^/(.*) - [P,QSA]
> 
>     ProxyPreserveHost ON
>     ProxyVia Full
>     KeepAlive On
>     ProxyPassReverseCookieDomain mydomain.com
> 
>     <Proxy balancer://proxy-balancer>
>        BalancerMember    http://xxx.xxx.xxx.xx1/rt_demo
>        BalancerMember    http://xxx.xxx.xxx.xx2/rt_demo
>     </Proxy>
>     ProxyPass      /rt_demo  balancer://proxy-balancer
> 
> 
> 
> And on each RT instance we have the 'classic' setup:
> 
>     Alias /rt_demo "/opt/rt3/share/html"
> 
>     PerlModule Apache2::compat
>     PerlModule Apache::DBI
>     PerlRequire /opt/rt3/bin/webmux.pl
> 
>     AddOutputFilterByType DEFLATE application/x-javascript text/css
> text/html
> 
>     <Location /rt/NoAuth>
>      Order allow,deny
>      Allow from all
>      Satisfy any
>   </Location>
> 
>   <Location /rt/REST/1.0/NoAuth>
>      Order allow,deny
>      Allow from all
>      Satisfy any
>   </Location>
> 
> <Directory "/opt/rt3/share/html">
>   AllowOverride All
>   Options ExecCGI FollowSymLinks
>   AddDefaultCharset UTF-8
>   SetHandler perl-script
>   PerlHandler RT::Mason
> </Directory>
> 
> 
> Thanks,
> Thierry