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mmaddnode Command
Name
mmaddnode Adds nodes to a GPFS cluster.
Synopsis
mmaddnode -N {NodeDesc[,NodeDesc...] | NodeFile}
Description
Use the mmaddnode command to add nodes to an existing GPFS cluster. On each new node, a mount
point directory and character mode device is created for each GPFS file system.
You must follow these rules when adding nodes to a GPFS cluster:
v You may issue the command only from a node that already belongs to the GPFS cluster.
v While a node may mount file systems from multiple clusters, the node itself may only be added to a
single cluster using the mmcrcluster or mmaddnode command.
v The nodes must be available for the command to be successful. If any of the nodes listed are not
available when the command is issued, a message listing those nodes is displayed. You must correct
the problem on each node and reissue the command to add those nodes.
Parameters
-N NodeDesc[,NodeDesc...] | NodeFile
Specifies node descriptors, which provide information about nodes to be added to the cluster.
NodeFile
Specifies a file containing a list of node descriptors (see below), one per line, to be added
to the cluster.
NodeDesc[,NodeDesc...]
Specifies the list of nodes and node designations to be added to the GPFS cluster. Node
descriptors are defined as:
NodeName:NodeDesignations:AdminNodeName
where:
1. NodeName is the hostname or IP address to be used by the GPFS daemons for node
to node communication.
The hostname or IP address must refer to the communications adapter over which the
GPFS daemons communicate. Alias interfaces are not allowed. Use the original
address or a name that is resolved by the host command to that original address. You
may specify a node using any of these forms:
Format Example
Short hostname k145n01
Long hostname k145n01.kgn.ibm.com
IP address 9.119.19.102
2. NodeDesignations is an optional, ’-’ separated list of node roles.
v manager | client Indicates whether a node is part of the pool of nodes from which
configuration mangers, file system managers, and token managers are selected.
The default is client.
v quorum | nonquorum Indicates whether a node is counted as a quorum node. The
default is nonquorum.
66 GPFS: Administration and Programming Reference