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[Linux-cluster] Corosync node disconnects occasionally

Hi all,

Had a bit of an issue with our test cluster configuration after a network hardware change (which we unfortunately can't reverse easily) and I wanted to make sure there isn't any known issues with the Cluster software before we go though another large hardware swapout.

We changed the switching hardware which the cluster software uses for its administrative data, and now we are occasionally receiving the following Corosync notification before the node in question gets fenced:

DISMAN-EVENT-MIB::sysUpTimeInstance = <uptime>, SNMPv2-MIB::snmpTrapOID.0 = COROSYNC-MIB::corosyncNoticesNodeStatus, COROSYNC-MIB::corosyncObjectsNodeName.0 = "<nodename>", COROSYNC-MIB::corosyncObjectsNodeID.0 = 1, COROSYNC-MIB::corosyncObjectsNodeAddress.0 = "<local IP>", COROSYNC-MIB::corosyncObjectsNodeStatus.0 = "left"

We suspect that the switch is misconfigured or just broken (offsite hardware hence the difficulties swapping mentioned above) but wanted to check nobody has had something like this before which might be software related rather than hardware.

Cheers for any ideas


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