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change backend NIC

I just added 2 10GB nic's in the servers  a 3 node cluster. when we setup the server we only had 1gb nics.

how do I change the servers to use the eth3 vs eth1?

from file:

/opt/petasan/config/cluster_info.json

do I just change the interface from eth1 to the new interface like eth3  on all servers?

do I reboot the servers or restart a process?

yes need to change file on all servers and reboot

the file contains the backend interface, for services/gateways you change the interface from ui