[ClusterLabs] corosync not able to form cluster

[Prasad Nagaraj]

No iptables or otherwise firewalls are setup on these nodes.

One observation is that each node sends messages on with its own ring
sequence number which is not converging.. I have seen that in a good
cluster, when nodes respond with same sequence number, the membership is
automatically formed. But in our case, that is not the case.

Example: we can see that one node sends
Jun 07 07:55:04 corosync [pcmk  ] notice: pcmk_peer_update: Transitional
membership event on ring 71084: memb=1, new=0, lost=0
.....
Jun 07 07:55:16 corosync [pcmk  ] notice: pcmk_peer_update: Transitional
membership event on ring 71096: memb=1, new=0, lost=0
Jun 07 07:55:16 corosync [pcmk  ] notice: pcmk_peer_update: Stable
membership event on ring 71096: memb=1, new=0, lost=0

other node sends messages with its own numbers
Jun 07 07:55:12 corosync [pcmk  ] notice: pcmk_peer_update: Transitional
membership event on ring 71088: memb=1, new=0, lost=0
Jun 07 07:55:12 corosync [pcmk  ] notice: pcmk_peer_update: Stable
membership event on ring 71088: memb=1, new=0, lost=0
.......
Jun 07 07:55:24 corosync [pcmk  ] notice: pcmk_peer_update: Transitional
membership event on ring 71100: memb=1, new=0, lost=0
Jun 07 07:55:24 corosync [pcmk  ] notice: pcmk_peer_update: Stable
membership event on ring 71100: memb=1, new=0, lost=0

Any idea why this happens, and why the seq. numbers from different nodes
are not converging ?

Thanks!
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