Re: Multiple geronimo instances with little disk usage

[David Jencks <da...@yahoo.com>]

On Nov 30, 2005, at 1:51 PM, Guglielmo.Lichtner@instinet.com wrote:

>
> I have thought some more about this issue and I want to propose 
> something.
>
> The distribution has the following main directories, size shown in 
> kilobytes:
>
> bin 32
>  config-store 30124
>  doc 224
>  doc/plan 220
>  lib 3544
>  lib/endorsed 1084
>  lib/ext 4
>  repository 43596
>  schema 624
>  var 2896
>  var/catalina 108
>  var/config 64
>  var/derby 1740
>  var/ldap 4
>  var/log 916
>  var/security 24
>  var/txlog 36
>
> On a linux box with several developers, it appears to me from playing 
> with Geronimo that each developer
> only needs these:
>
> config-store 30124
>  var 2896
>  var/catalina 108
>  var/config 64
>  var/derby 1740
>  var/ldap 4
>  var/log 916
>  var/security 24
>  var/txlog 36
>
> The rest could be stored in one place, e.g. /usr/local/geronimo.
>
> For this to work you could set a property, e.g.
>
> -Dgeronimo.base=~/dev/geronimo_instance
>
> And as a default for geronimo.base you can use bin/..
>
> Your thoughts on this?

I think you can get 90% of the benefit of this proposal with almost no 
change to geronimo by simply using a local maven repository for the 
geronimo repository.  I think we could make this easy to set up by 
including a second repository gbean normally disabled pointing to the 
maven repo.  Or we could supply a server set up for this.

thanks
david jencks

>
>
>
> David Jencks <da...@yahoo.com>
>
> 11/24/2005 11:28 AM
> Please respond to user
>        
>         To:        user@geronimo.apache.org
>         cc:        
>         Subject:        Re: Multiple geronimo instances with little 
> disk usage
>
>
>
> This is not supported yet, but it definitely should be.
>
>  The idea is that everything except the var directory is shared between
>  server instances, and each instance has its own var directory.  So,
>  there are several gbeans with paths into the var directory: several 
> are
>  in the j2ee-system plan.  Some other gbeans in plans such as
>  system-database and activemq-broker also store stuff in var.  The 
> major
>  problem at the moment is that most of these gbeans are in the system
>  plan which is loaded before the config.xml file, so there is no
>  opportunity to replace the "var" with the location of your choice.  
>  Unfortunately this means you have to build a whole set of
>  configurations for each server, since the name of the base config is
>  going to be different.
>
>  Does anyone have a good idea how to make this work with only a single
>  set of configurations?  one possibility would be to have ServerInfo
>  know where the var directory is, all gbeans that use var ask 
> ServerInfo
>  where it is, and have ServerInfo read it from a system property.  Then
>  you could set the var location on the command line.  You can already
>  set the config.xml on the command line, although this might not be
>  needed if the var location could be set.  The only disadvantage I've
>  thought of with this plan is that it builds the concept of the var
>  directory into geronimo in a much more fundamental way than it is now.
>
>  thanks
>  david jencks
>
>
>  On Nov 24, 2005, at 11:11 AM, Guglielmo.Lichtner@instinet.com wrote:
>
>  >
>  > I would like to do this:
>  >
>  > 1) Unpack the geronimo distribution under /usr/local/geronimo (say)
>  > and make it read-only.
>  >
>  > 2) Create many small _instances_ of geronimo running on all 
> different
>  > (sets of) ports, on the same machine.
>  > I would like the _code_ to be in one place, but the configurations 
> of
>  > the instances to all be different.
>  >
>  > Basically a lot like tomcat.
>  >
>  > Thanks
>  > Guglielmo
>  >
>  >
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