Andre

could you explain how mod_perl would handle routing capability to pass to tc 
instances?..could mod_perl accomplish the functionality of a load-balancer?

thanks
Martin Gainty 
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> Date: Thu, 28 May 2009 00:33:35 +0200
> From: a...@ice-sa.com
> To: users@tomcat.apache.org
> Subject: Re: Has anyone created a WSDL for the Manager Application
> 
> Mike Oliver wrote:
> ...
> Unless I misunderstand,
> - the first part of your problem is to be able to login once, and then 
> have this login be valid for all separate Tomcat instances.
> - the second part of the problem is then, for each Tomcat instance, to 
> be able to use manager-like functionalities to start/stop/load new 
> applications and whatnot.
> 
> I'll tackle the first part, which amounts to an "enterprise-wide SSO issue".
> Assuming that the same authenticated user-id can be used on all your 
> Tomcat instances, as one possible solution I would use the following setup :
> 
> - an Apache httpd front-end, which does the authentication, using any 
> Apache-compatible way for ditto
> - the Apache httpd front-end connects to Tomcat back-ends via the mod_jk 
> connector module (on the Apache side), and an AJP Connector (on the 
> Tomcat side)
> - in the AJP <Connector> element on the Tomcat side, set the attribute :
> tomcatAuthentication="false"
> 
> This will cause Tomcat to accept the user-id as authenticated by the 
> httpd server (and passed on by mod_jk), and not redo the authentication 
> at the Tomcat level (while still verifying that this user-id effectively 
> belongs to a "Tomcat role" allowed to use the relevant functionality).
> 
> 
> Now that the SSO issue is solved, my personal stab at the next issue 
> would involve writing a mod_perl add_on module for Apache httpd, which 
> would accept your "Tomcat management" commands, and distribute them to 
> your back-end Tomcats, using the /manager interface that other more 
> qualified people seem to suggest.  Quite which front-end protocol this 
> httpd add-on module accepts from the client side is up to you.
> 
> But that is of course because I am a mod_perl fan, and because for this 
> kind of problem, it seems to me like the most flexible tool.  Other 
> people may have other suggestions.
> 
> 
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