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I was wondering if this was possible with lvs - and now it appears it is!
Great!!
There is a great deal of general description below though :(. Is there a
simple tutorial that describes _exactly_ how to do this, or would someone be
willing to write one?
Perhaps it should be a section in the howto?
Regards,
Ivan
----- Original Message -----
From: "Tan, Guan Boon" <guan.boon.tan@xxxxxxxxx>
To: <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Sent: Thursday, February 15, 2001 8:05 PM
Subject: RE: LVS with mark tracking
> The problem for multihoming
> Many companies require for high availability by using links to more than
one
> ISP. The ISP market is not as mature as other countries and we find that
> each ISP is either unwilling or unable to provide proper BGP support. This
> places and overhead on the content provider or hosting site to use
multiple
> address spaces, one registered address space per ISP.
>
> The solution
> One solution to this problem would be to create a dummy VIP for each ISP
> connection. To the dummy VIP address a member is added that would be
> unavailable should the link or ISP be unavailable. The availability of the
> member could be checked using a simple ping. Should the member be
> unavailable then the VIP will also be unavailable since it has only one
> member. To ensure that the director sends ping checks to the correct ISP
> connection a static host route should be added to the director routing
table
> to force the check through the correct ISP connection and thus the correct
> interface address.
> Now that we have a mechanism to determining the availability, from the
> Internet, of each registered address space we can tie the dummy VIP port
and
> real VIP port together using DNS. DNS is configured to use a VIP only if
the
> real port and the dummy VIP port are both available.It means that DNS
should
> be intelligent health check the vip. Should either VIP port be unavailable
> then the real VIP address will not be returned to the client.
> _______________________________________________
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>
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