GPFS cluster creation considerations

A GPFS™ cluster is created using the mmcrcluster command. On supported Linux distributions, you can use the installation toolkit to create a GPFS cluster. For more information, see Overview of the installation toolkit.

Table 1 details the cluster creation options, how to change the options, and the default values for each option.

Table 1. GPFS cluster creation options
Options Command to change the option Default value
Creating an IBM Spectrum Scale cluster

mmaddnode
mmdelnode

None
Node designation: manager or client. See Creating an IBM Spectrum Scale cluster. mmchnode client
Node designation: quorum or nonquorum. See Creating an IBM Spectrum Scale cluster. mmchnode nonquorum
Remote shell command mmchcluster /usr/bin/ssh
Remote file copy command mmchcluster /usr/bin/scp
Cluster name mmchcluster The node name of the primary GPFS cluster configuration server.
Cluster configuration information. See IBM Spectrum Scale cluster configuration information. mmchcluster The Cluster Configuration Repository (CCR) is enabled.
GPFS administration adapter port name. See GPFS node adapter interface names mmchnode Same as the GPFS communications adapter port name.
GPFS communications adapter port name. See GPFS node adapter interface names. mmchnode None
User ID domain for the cluster. mmchconfig The name of the GPFS cluster.
Starting GPFS automatically mmchconfig no
Cluster configuration file Not applicable None