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From Zippy Zeppoli <zippyzepp...@gmail.com>
Subject Re: rolling deployments with tomcat clustering
Date Wed, 06 Feb 2013 01:06:45 GMT
Yes, it will have to be dynamically detected somehow. A real chore.

On Tue, Feb 5, 2013 at 2:48 PM, Christopher Schultz <
chris@christopherschultz.net> wrote:

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> Pid,
>
> On 2/5/13 3:17 AM, Pid wrote:
> > On 05/02/2013 02:25, Zippy Zeppoli wrote:
> >> Hello, I have a tomcat 7 cluster which I want to do rolling
> >> deployments. I am using FarmDeployer. I am wondering, what is the
> >> default behavior of FarmDeployer, does it undeploy and deploy the
> >> new app all at once?
> >>
> >> Is there any way to modify this behavior to do it serially?
> >
> > Try versioning your war files.
> >
> > myapp##v1.0.0.war myapp##v1.0.1.war
> >
> > This feature is called 'parallel deployment'.
> >
> > You can use JMX to monitor the activeCount of sessions of the
> > older version and also to undeploy it when that number reaches
> > zero.
>
> Note that any JMX monitoring you are doing will likely have to change
> due to the new "name" of the context.
>
> - -chris
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