Server Clustering

Discussions about design and architecture principles, including native JADE systems and JADE interoperating with other technologies
ConvertFromOldNGs
Posts: 5321
Joined: Wed Aug 05, 2009 5:19 pm

Server Clustering

Postby ConvertFromOldNGs » Fri Aug 07, 2009 11:30 am

by Stephen >> Tue, 15 Jun 2004 21:40:52 GMT

Hi,
Has anyone had any experience with clustering a Jade server that could possibly point me in the right direction. We are wanting to set up a server cluster with the secondary server in an Active Passive mode. ie, it will not be handling any requests or used in a load balancing type environment, but purely just mirroring everything, so if the other server goes offline, then this secondary server will kick in, and handle all requests until the other server comes back online. So its being used as a backup server incase for whatever reason the main server goes offline.

There is quite a sizable range of products that do this but its just trying to sort out which one, and which will work with Jade. The server is running only Jade, and IIS.
Jade server is jadrap, 1 x jadapp, 1 x background processor and web monitors.

I realise there is now the Jade SDS product for replicating a Jade database to another server, but from what I've heard it costs a bomb, and would only do part of the job we want. We also need to mirror changes to static files outside of the jade environment, and changes to things like IIS.
Most of the cluster/replication software on the market claim to be able to replicated open files. Has anyone had experience with this? Does this mean it could replicate changes made to the open Jade database files?

If anyone has been down this road and could recommend software or products they used, I would appreciate any guidance. Many Thanks
Stephen Persson

ConvertFromOldNGs
Posts: 5321
Joined: Wed Aug 05, 2009 5:19 pm

Re: Server Clustering

Postby ConvertFromOldNGs » Fri Aug 07, 2009 11:31 am

by allistar >> Wed, 16 Jun 2004 1:09:08 GMT

Hi Stephen,
Although I can't help you with your specific question, we have had clients that implement the basics of SDS manually. This can be done by moving database journals to the secondary computer and using jdbutilb to roll them into the secondary database. (There are notifications in JADE that you can catch that tell you when a journal is completed a new a new one started. I believe in JADE 6 there are ini file settings that allow this copying to take place automatically). You could let this process replicate your JADE database and use other third party tools to replicate other changes (such as IIS settings, files etc).
I am unsure whather this secondary database would need to licensed with Jade.

Regards,
Allistar.
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Allistar Melville
Software Developer, Analyst allistar@silvermoon.co.nz
Auckland, NEW ZEALAND

Silvermoon Software
Specialising in JADE development and consulting
Visit us at: http://www.silvermoon.co.nz
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