Hi David and everyone, Any progress on this?
Thanks -Vincent > -----Original Message----- > From: David Jencks [mailto:[EMAIL PROTECTED] > Sent: lundi 30 janvier 2006 08:23 > To: dev@geronimo.apache.org > Subject: Multiple servers sharing the same repo and config store > > Many people have talked on and off about how to set up multiple > servers sharing the same repository and config-store, but we haven't > arrived at an agreed on way to do it. We have a prospective customer > for this feature (Vincent Massol with Cargo) so I'd like to move > beyond thinking about it in my head, discuss it, and have someone > implement it. I believe any implementation will be more or less > trivial, the hard part is figuring out what to do. > > I've only thought of ways to extend what we have now, rather than > restructure anything or add big new capabilities. If someone sees a > better way, please speak up. > > So, we have a ServerInfo gbean that knows where geronimo is located > and can resolve absolute locations for other components. Then we > have things like the repository and config store gbeans that > typically are "located" outside the var dir and things like the > logging framework, local attribute manager, derby, and tomcat, that > typically keep stuff in the var directory. > > All or most of these start with the first configuration loaded so > they can't have any attributes overridden by config.xml: in fact this > file is read by one of the gbeans that we need to "relocate". > > I've thought of two related solutions. Both of them involve giving > ServerInfo knowledge of another path and another resolve method. > > One would be something like "resolveVar" and would normally resolve > to geronimo_home/var. This would involve all the gbeans currently > looking inside var having the "var" trimmed off the front of their > paths and using the new resolveVar method. In this case we'd have > different servers represented as e.g. > var1 > var2 > var3 > ... > > > The other would give ServerInfo something like resolveServer which > would normally resolve to geronimo_home. The gbeans looking inside > var would keep their current paths and just call the new resolve > method instead of the old one. In this case we'd have servers like > var > server1/var > server2/var > ... > > In either case I think starting geronimo with a command line argument > pointing to the var directory is the only way to specify which server > you want to run; the default would presumably be as now "var". > > Several people have suggested putting an additional config-store into > var for "private" use by a particular server. At the moment I think > that providing a different config-store class that uses the new > resolve method on server info would be the best way to do this. > > > I'm not attached to these ideas but this is as far as my thinking has > gone. Please comment. > > thanks > david jencks
