The easiest most efficient way to manage a Swarm cluster's configuration and software is to use a Cluster Services Node (CSN). This offers the ability to centrally manage the cluster's software and configuration.
There are situations Situations exist where PXE booting of the storage nodes is not an option. Perhaps the only available network interface cards on the chassis do not support PXE. Perhaps there is no other hardware in the Swarm subnet is available for the role of a PXE server. See the available options:
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In this scenario, as already outlined in the Swarm guides (specifics on creating the USB drive are in the README.txt file), the Swarm software and configuration files all reside on a USB drive which is used to boot the Swarm node. All configuration changes need to be made via using one of the following methods:
the The USB drive
the The cluster settings in the Swarm Admin Console
SNMP
Since many parameters are not available using the Swarm Admin Console or settable via using SNMP, this leaves many parameters unchangeable without physically removing the USB drive, changing the caringo/node.cfg file, re-inserting the USB drive, and rebooting the chassis.
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