IBM General Parallel File System for AIX: Administration and Programming Reference

mmlscluster Command

Name

mmlscluster - Displays the current configuration information for a GPFS cluster.

Synopsis

mmlscluster

Description

Use the mmlscluster command to display the current configuration information for a GPFS cluster.

For the GPFS cluster, the mmlscluster command displays:

• The cluster id
• The remote shell command being used
• The remote file copy command being used
• The primary GPFS cluster data server
• The secondary GPFS cluster data server
• Nodes belonging to each nodeset in the GPFS cluster
• GPFS cluster nodes not currently assigned to a nodeset

For each node, the command displays:

• The node number assigned to the node by GPFS
• Short hostname
• IP address
• Long hostname

Parameters

NONE

Options

NONE

Exit status

0

Successful completion.

1

A failure has occurred.

Security

You must have root authority to run the mmlscluster command.

You may issue the mmlscluster command from any node in the GPFS cluster.

When using rcp and rsh for remote communication, a properly configured /.rhosts file must exist in the root user's home directory on each node in the GPFS cluster. If you have designated the use of a different remote communication program on either the mmcrcluster or the mmchcluster command, you must insure:

1. Proper authorization is granted to all nodes in the GPFS cluster.
2. The nodes in the GPFS cluster can communicate without the use of a password.

Examples

To display the current configuration information for the GPFS cluster, enter:

mmlscluster 

The system displays information similar to:

GPFS cluster information                           
========================                           
  Cluster id:  gpfs0103263/15/01M03                
  Remote shell command:      /usr/bin/rsh          
  Remote file copy command:  /usr/bin/rcp          
                                                   
GPFS cluster data repository servers:              
-------------------------------------              
  Primary server:    k145n43.kgn.ibm.com        
  Secondary server:  k145n44.kgn.ibm.com        
                                                   
Nodes in nodeset 1:                                
-------------------                                
  1  k145n29  9.114.133.29  k145n29.kgn.ibm.com  
  2  k145n30  9.114.133.30  k145n30.kgn.ibm.com  
  3  k145n31  9.114.133.31  k145n31.kgn.ibm.com  
  4  k145n32  9.114.133.32  k145n32.kgn.ibm.com  
                                                   
Nodes in nodeset 2:                              
---------------------                              
  5  k145n33  9.114.133.33  k145n33.kgn.ibm.com  
  6  k145n34  9.114.133.34  k145n34.kgn.ibm.com  
  7  k145n35  9.114.133.35  k145n35.kgn.ibm.com  
  8  k145n36  9.114.133.36  k145n36.kgn.ibm.com  
  9  k145n37  9.114.133.37  k145n37.kgn.ibm.com  
  10  k145n38  9.114.133.38  k145n38.kgn.ibm.com 
  11  k145n39  9.114.133.39  k145n39.kgn.ibm.com 
  12  k145n40  9.114.133.40  k145n40.kgn.ibm.com 
  13  k145n41  9.114.133.41  k145n41.kgn.ibm.com 
  14  k145n42  9.114.133.42  k145n42.kgn.ibm.com 
  15  k145n43  9.114.133.43  k145n43.kgn.ibm.com 
  16  k145n44  9.114.133.44  k145n44.kgn.ibm.com 
  17  k145n45  9.114.133.45  k145n45.kgn.ibm.com 
  18  k145n46  9.114.133.46  k145n46.kgn.ibm.com 
                                                   
Cluster nodes that are not assigned to a nodeset:  
-------------------------------------------------  
  19  k145n47  9.114.133.47  k145n47.kgn.ibm.com 
                                                   
 

See also

mmaddcluster Command

mmchcluster Command

mmcrcluster Command

mmdelcluster Command

Location

/usr/lpp/mmfs/bin