DCEM uses IBM Cluster Systems Management (CSM). CSM uses the Resource Monitoring and Control (RMC) subsystem. Installing DCEM requires that you install and correctly configure both CSM and RMC. In particular, DCEM uses the CSM dsh command to run commands on the nodes. For dsh to work, you must set up security on each node.
If you choose the default remote shell rsh , you must add the management server host name to the /.rhosts file on the nodes that will be managed. To make the managed hosts visible to DCEM (through the Browse Hosts dialog), you must create node definitions for each of the nodes to be managed in the CSM database on the management server where DCEM will run. You can create these definitions when you install CSM. However, if these node definitions do not exist, you can create them by using the CSM definenode command, as follows:
/opt/csm/bin/definenode -n <host name>
See CSM Commands for more information on the definenode command.