[opencms-dev] How Run Opencms in Clustered Environment.?

[Christian Steinert]

Mike McGrath schrieb:
>
>>
>> even with OCEE, you can only use one server for editing (but you can 
>> display content on multiple servers).  if you just deploy the same 
>> application on multiple servers pointed at the same database, it 
>> should mostly work ok, though cached content will not automatically 
>> be updated when it is edited.
>>
>> also, automatic failover will not work correctly, because OpenCms 
>> stores data tied to the user session outside of the actual 
>> HttpSession object.  so if you want to use the cluster to provide 
>> high availability in the event of a server crash, i think you either 
>> need to look into OCEE or make some modifications to the code yourself.
>>
>> jt
>>
> jt - Where does the session stuff reside?  At present I'm thinking 
> about making a san cluster with Opencms using either NFS or GFS on the 
> back end.  It *appears* to be working.  Basically I have the webapps 
> directory on a SAN and the servers all read from it.  Anyone see any 
> problems with this?
>
>    -Mike
>
Hi Mike,

I have not looked into this yet, but probably you have to wrestle with 
your servlet container in order to make it replicate your sessions.
E.g. for tomcat: http://tomcat.apache.org/tomcat-5.5-doc/cluster-howto.html

regards
c.