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On Fri, 11 May 2007, Torsten Schlabach wrote:
Dear list!
Does anyone know of any provider which allows the hosting of IPVS at
reasonable prices?
Let me briefly explain what the problem is:
I understand that using IP Virtual Server I can set a a cluster of
machines that share on IP address and use some heartbeat mechanism to
negotiate on what pyhsical NIC that IP address will be at any given
point in time.
not exactly true, but I don't know that this affects your
problem. An LVS appears as a single box to the outside world
with the VIP facing the internet. Whatever trickery goes on
inside the LVS is of no concern to the routing
infrastructure.
Now if we want to build a reliable service on the Internet (say a
website, for example) we can have one A record for www.oursite.net point
to one IP address only. So we would want that IP address to
transparently fail over between two data centers.
this will cost you $ and the data centers would have to
cooperate. Presumably they'd have to be owned by the same
company.
Of course we can put two (or more) servers into different data centers
but one IP will be routed to one physical destination, won't it?
this is the nature of data centers and routing. ISPs are
alloted blocks of IPs.
So wouldn't it make sense for someone who owns a network infrastructure
to offer IPVS as a service and have the IP address point to whatever
real servers which I can configure?
It seems that you think that an LVS operates by failover -
this isn't true.
Joe
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Joseph Mack NA3T EME(B,D), FM05lw North Carolina
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