> -----Original Message-----
> From: Berneburg, Cris J. - US <cberneb...@caci.com.INVALID>
> Sent: Tuesday, June 29, 2021 7:16 AM
> To: users@tomcat.apache.org
> Subject: RE: 500 instances of tomcat on the same server
> Eric and Mark
> Just curious...
> Eric> We can run 75 to 125 instances of tomcat on a single Linux server
> Eric, Do you have or need a centralized way of managing all those instances?

Hi Cris and Mark,

We have about 1500 instances of tomcat (750 load-balanced virtual services 
across 20 physical servers). We currently manage the environment with scripts. 
Due to the simplicity and consistency of our internal deployment standards, it 
works well and is pretty easy to manage on an instance-by-instance basis, but a 
web console where we can see the environment as a whole, or filter on portions 
of it, would be amazing!

> It sounds like different support groups connect to their own instances, if I
> understand correctly.

Same software vendor, different technicians. When they call, they are seeking 
to support an individual customer. We give them an interface through which they 
see a sandboxed representation of that customer's deployment. The servers 
themselves are multi-tenanted, but when the support techs connect, it looks to 
them like a single instance. Each customer is running the same canned webapp, 
but possibly different versions of it, with different memory configurations, 
and requiring different versions of tomcat and the JVM.

> Mark> if there are changes we could make to Tomcat that would it easier
> Mark> to run and manage that many instances do let us know.
> Mark> We'd be happy to consider them.
> Mark, did you already have something in mind?  Like a TC Manager-manager?
> Some sort of dashboard that is able to perform TC Manager ops against all
> the instances?
> --
> Cris Berneburg
> CACI Senior Software Engineer
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