Re: WLBS question
From: Egbert Nierop \(MVP for IIS\) (egbert_nierop_at_nospam.invalid)
Date: 12/07/04
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Date: Tue, 7 Dec 2004 22:57:57 +0100
"Alex Frenkel" <frenkel.alex@gmail.com> wrote in message
news:eYcvltI3EHA.3716@TK2MSFTNGP10.phx.gbl...
> Hi Egbert.
> Thank you for the response.
> As I understand you, the WLBS can look at IIS service, or at web site
> availability on the application level.
> And it does not work only on the Network Level.
> If so, can you explain little bit more how can I implement WLBS to
> application level, and not only on the hardware lavel.
Alex,
>From the WLBS documents, I read this
...WLBS does not directly monitor server applications, such as Web servers,
for continuous and correct operation. Instead, it provides the mechanisms
needed by application monitors to control cluster operations, for example,
to remove a node from the cluster if an application fails or displays
erratic behavior. Monitoring services are widely available for most
client/server applications....
So what you need is a HTTP heartbeat program, that detects if IIS is heaving
errors, if so, it removes the node from the cluster...
imho, WLBS for IIS is a little budgetoverkill :). For SQL server, it is OK.
I would consider NLBS and implement ISP Session (for instance) to have a
fault tolerant solution. If a server need to be down, you should just
disconnect it and NLBS correctly routes to a living server.
Regards,
There for
> Thank you.
> Alex Frenkel.
>
> "Egbert Nierop (MVP for IIS)" <egbert_nierop@nospam.invalid> wrote in
> message news:%23q8doc62EHA.480@TK2MSFTNGP10.phx.gbl...
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