mmlsnodeclass command

Displays node classes defined in the system.

Synopsis

mmlsnodeclass [ClassName[,ClassName...] | --user | --system | --all] [-Y]

Availability

Available on all IBM Spectrum Scale editions.

Description

Use the mmlsnodeclass command to display node classes defined in the system.

Parameters

ClassName
Displays the specified node class.
--user
Displays all user-defined node classes. This is the default.
--system
Displays all system-defined node classes.
--all
Displays both the system-defined and user-defined node classes.
-Y
Displays the command output in a parseable format with a colon (:) as a field delimiter. Each column is described by a header.
Note: Fields that have a colon (:) are encoded to prevent confusion. For the set of characters that might be encoded, see the command documentation of mmclidecode. Use the mmclidecode command to decode the field.

Exit status

0
Successful completion.
nonzero
A failure has occurred.

Security

You must have root authority to run the mmlsnodeclass command.

The node on which the command is issued must be able to execute remote shell commands on any other node in the cluster without the use of a password and without producing any extraneous messages. For more information, see Requirements for administering a GPFS file system.

Examples

  1. To display the current user-defined node classes, issue this command: 
    mmlsnodeclass
    The system displays information similar to: 
    Node Class Name       Members
--------------------- -----------------------------------------------------------
siteA                 linuxNodes
  2. To display all node classes defined in the system, issue this command:
    mmlsnodeclass --all
    The system displays information similar to: 
    Node Class Name       Members
--------------------- -----------------------------------------------------------
aixNodes              
all                   node03,node01,node02,node04,nodensd01,nodensd02
cesNodes              node01,node02,node04
clientLicense         
clientNodes           node03,node02,node04,nodensd01,nodensd02
cnfsNodes
disabledCnfsNodes
enabledCnfsNodes
linuxNodes            node03,node01,node02,node04,nodensd01,nodensd02
managerNodes          node01
nonAixNodes           node03,node01,node02,node04,nodensd01,nodensd02
nonCesNodes           node03,nodensd01,nodensd02
nonCnfsNodes          node03,node01,node02,node04,nodensd01,nodensd02
nonLinuxNodes         
nonNsdNodes           node003,node01,node02,node04
nonQuorumNodes        
nonWindowsNodes       node03,node01,node02,node04,nodensd01,nodensd02
nsdNodes              nodensd01,nodensd02
quorumNodes           node03,node01,node02,node04,nodensd01,nodensd02
serverLicense         node03,node01,node02,node04,nodensd01,nodensd02
windowsNodes
siteA                 linuxNodes
object_database_node  node01
object_singleton_node node01
  3. To display only the nodes that are quorum nodes, issue this command:
    mmlsnodeclass quorumNodes
    The system displays information similar to: 
    Node Class Name       Members
--------------------- -----------------------------------------------------------
quorumNodes           c8f2c1vp4,c8f2c4vp1,c8f2c4vp2

See also

Location

/usr/lpp/mmfs/bin