GPFS: Administration and Programming Reference - IRA Home

mmdelnode Command
Exit status
0 Successful completion.
nonzero A failure has occurred.
Security
You must have root authority to run the mmdelnode command.
You may issue the mmdelnode command from any node in the GPFS cluster.
When using the rcp and rsh commands 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 ensure:
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, and without any
extraneous messages.
Examples
1. To delete all of the nodes in the cluster, issue this command:
mmdelnode -a
The system displays information similar to:
Verifying GPFS is stopped on all affected nodes ...
mmdelnode: Command successfully completed
mmdelnode: 6027-1371 Propagating the cluster configuration data to
all affected nodes. This is an asynchronous process.
2. To delete nodes k145n12, k145n13, and k145n14, issue this command:
mmdelnode -N k145n12,k145n13,k145n14
The system displays information similar to:
Verifying GPFS is stopped on all affected nodes ...
mmdelnode: Command successfully completed
mmdelnode: 6027-1371 Propagating the cluster configuration data to
all affected nodes. This is an asynchronous process.
See also
“mmaddnode Command” on page 66
“mmcrcluster Command” on page 114
“mmchconfig Command” on page 88
“mmlsfs Command” on page 209
“mmlscluster Command” on page 198
Location
/usr/lpp/mmfs/bin
160 GPFS: Administration and Programming Reference