Re: Newbie in the Windows Cluster
- From: "Edwin vMierlo" <EdwinvMierlo@xxxxxxxxxxxxxxxxxxxxxxxxx>
- Date: Fri, 23 Feb 2007 10:43:43 -0000
"Syam Hundi" <Syam Hundi@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:A1A5645F-07CB-4A82-93FC-60FB5938349B@xxxxxxxxxxxxxxxx
Hi,
I am trying to find if the windows server 2003 provide the support for
application failover rather than the node failover?
yes it does, you need to configure a "group" which contains:
- dedicated IP address
- dedicated Network Name
- disk(s) for storing data for your application
- and then your application.
I would like to switch to another node in the cluster if the applicationthing
stops responding or killed. I understand that the node failures are being
handled by the microsoft windows server 2003 enterprise edition.
If the application failover is supported, then do we need to build any
in the application to enable this feature?
recommended: yes, your application should be written as a service which is
"cluster aware", more information on this
see: http://msdn2.microsoft.com/en-us/library/ms952401.aspx
and see:
http://msdn.microsoft.com/chats/transcripts/enterprise/windows_090704.aspx
and see: http://msdn2.microsoft.com/en-us/library/aa372250.aspx
(for a start, there are many other MSDN resources on how to design a cluster
aware application, start with the API guide
http://msdn2.microsoft.com/en-us/library/aa372857.aspx)
normal service/application: yes, it will work, you can configure your
application in the group as a "generic service" or "generic application",
however if you have any control on the source, then I would only see this as
a last resort, or temporarily solution until you get your app changed over
to cluster aware (and then test various failover conditions)
What are the steps required to register the application to enable the
failover when the node is still active?
the cluster will take care of this, there are two methods, the looks-alive
and is-alive. If you have a cluster aware application you can define these
two tests (in your resource DLL) and the cluster will failover the group to
the other node and restart your application there, based on these test
conditions you have included in your resource DLL.
this
I understand that Windows server standard edition is not compatible for
clustering technology.
No
without
Does the cluster concept comes pacakged with the enterprise edition
any separate licence?
Yes, however you if you use a commercial application in your cluster, you
might want to check this application license for any additional clauses for
clustering.
Your answers are highly appreciated?
If you are new to clustering, you can start building a cluster on a Virtual
Server or VMWare, to get familiar with the concept.
As well as, to properly administer and manage cluster and high availability
solutions, I would strongly recommend training in cluster technologies.
Although not from direct experience, one particluar is highly regarded in
the industry : http://www.clusterhelp.com
Further more a good collection of cluster articles can be found here :
http://www.nw-america.com
Hope this helps,
Rgds,
Edwin.
.
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