[Linux-HA] IPs on in one resource group are bound to the lo
interface on the other node?
davea at support.kcm.org
Mon Sep 24 18:31:26 MDT 2007
Is this normal behavior?
2 node cluster, Node A and Node B, running 2 resource groups- 1 for each
node and mutually exclusive of each other.
Resource group A has alot of IPs and runs ipvsadm and ldirectord.
Resource group B has nothing - yet. This group will contain all that is
needed for this server to be a realserver(lvs term).
I have 4 additional hosts that are dedicated realservers- no heartbeat.
Node A is running Resource Group A
Node B is running Resource Group B
While do some initial setup of my cluster today, I had some problems
reaching a load balanced ip address. While solving THAT problem(I solved
it btw), I did some digging and I found the following:
Node B has almost all the IP addresses that Node A has.
There are 2 differences-
1- the IPs on host B are bound to the *lo* interface and are
contained in Resource Group A.
2- some IPs on host A in Resource Group A are NOT on Host B at all
Is this normal?
Are ALL the IPs on Host A supposed to be on Host B, just bound to the LO
Does this mean that I could add my 4 additional servers to this cluster
and that they could all be potential lvs directors,(one at a time, of
course), while the rest of them have the load balanced IPs bound to the
LO interface? I do this manually on my other realservers now.
I hope I am making sense.
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