In case an adapter needs to be replaced, proceed as follows:
Power down the node. The network manager will automatically reroute the interconnect traffic. When you run sciadmin on the frontend, you will see the icon of the node turn red within the GUI representation of the cluster nodes.
Unplug all cables from the adapter. Remember (or mark the cables) into which plug on the adapter each cables belongs.
Unmount the old adapter from to be replaced, and insert the new one into the node.
Power up the node; then connect the cables in the same way they had been connected before. Make sure that all LEDs on all adapters in the affected ringlets light green again.
To verify the installation of the new adapter:
The icon of the node in the sciadmin GUI must have turned green again.
The output of the dis_services script should list all services as running.
Run for this adapter from sciadmin. No errors should be reported, and all nodes should be visible to this adapter, as illustrated in this example for a 4-node machine:
Remote
Perform the cable test from within dxadmin to ensure that the cabling is correct (see Chapter 4, Initial Installation, Section 3.7.3, “Cabling Correctness Test”).
Running the cable test will stop other traffic on the interconnect for the time the test is running, which can be up to a minute. If this is not an option, please use scidiag from the commandline to verify the functionality of the interconnect (see Chapter 7, Interconnect Maintenance, Section 1.1.3, “Static Interconnect Test”).
Communication between all other nodes will continue uninterrupted during this procedure.