[mapguide-users] Cluster configuration support on Linux

[Trevor Wekel]

Hi Ismael,
 
I do not have any experience setting up a clustered configuration but have done some preliminary investigation into the requirements.  Here's some information that may help:
 
The repository can only be accessed by a single process at any given time so active/active is not currently possible.  Active/passive might be possible with some work.  The filesystem where the repository is located must be fully posix compliant and support locking.  NFS and Samba shares are not fully compliant.  Something like Oracle OCFS2 or RedHat GFS would be more appropriate.  This would allow both machines to see the repository.  However, only a single MapGuide Server process can access the repository at any given time.  You would have to manage MapGuide Server process startup and shutdown using external monitoring scripts.
 
If you are installing from sources on Linux, it is possible to run MapGuide under a user account.  Grant the user account full access to /usr/local/mapguideopensource and /usr/local/fdo-3.2.0.  Then build and install using that user account and startup Apache and mgserver using the same user account.  Daemonizing the mgserver process (mgserverd.sh) may not work but you should be able to use nohup with the mgserver.sh script.  
 
Thanks,
Trevor

  _____  

From: Ismael Cams [mailto:mapguide2007 at gmail.com] 
Sent: Tuesday, February 20, 2007 2:41 AM
To: mapguide-users at lists.osgeo.org
Subject: [mapguide-users] Cluster configuration support on Linux


Hello all,
 
is there any chance to have the MapGuide installed in a cluster configuration on Linux ? Could this be done for example by sharing the repository between two mapguide servers. I have been experimenting with this for a while but could not come to a good solution, e.g. information stored by one server in the repository is not directly accessible to the other server (restart is needed). In a perfect scenario I would like to use the two servers in an active, active scenario (loadbalancing) but I would already be very happy if I could get to a solution for the first problem. 
 
Does anyone has experience with mapguide in a cluster configuration ?
 
BTW is it possible to run the mapguide server not under root (but e.g. a user mapguide) ?
 
Kind regards,
Ismaël
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