suganthi.arumugam at wipro
Jul 16, 2007, 5:28 AM
Failover inconsistent when a node is disconnected from the network forcefully
We got the following problem when we were testing wackamole in our Lab.
We observed that the failover is not consistent among the nodes.
We had a 4 node(A,B,C,D) configuration.
We have a Single Virtual IP configured.
Initially B acquired the VIP.Through the wackatrl tool we tested who has
acquired the VIP. All the 4 nodes A,B,C and D showed that B has acquired
We tried to unplug B from the LAN(by pulling out the network cable). Now
A has acquired the VIP. A, C and D tell that A has acquired the VIP.
Now B is connected back to the LAN . When B was connected 'wackatrl -l'
in B tells that B has acquired the VIP, whereas A,C and D tell that A
has acquired the VIP. When we tried to reach the VIP through putty via
ssh. It got connected to A.
When A was disconnected from LAN, B,C and D tell that B has acquired the
VIP. But when we tried to connect the VIP through putty via ssh, and the
connection timed out.
Can someone throw some light on what would be the cause?
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