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From "Prout John - jprout" <John.Pr...@acxiom.com>
Subject How can I take a webapp "temporarily out of service" using mod_jk?
Date Mon, 23 Jan 2006 21:56:47 GMT
Hi

 

I am running a JBoss cluster, using tomcat as the Servlet engine. Apache
and mod_jk provide load-balancing of requests over the machines in the
cluster

 

I need to be able to replace all the URLs in the webapp with a
"Temporarily out of service" page during maintenance, and I need to do
this without making any permanent Apache configuration changes and
without restarting Apache (Operations is very reluctant to restart
Apache).

 

Does anyone know a way to do this?

 

I think there may be a way to use the controls on the mod_jk status page
to redirect all requests for a webapp to a different URL ( the "Route
Redirect" input) but this is probably wishful thinking - even if does
allow me to redirect requests, it would probably apply to all the
webapps in the cluster, which wouldn't meet the requirement. The status
page teases me by listing all the JkMounts and JkUnmounts, but doesn't
allow me to change them; adding a JkUnmount dynamically would be a good
solution.

 

Any Ideas?

 

John

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