HP Insight Cluster Management Utility Specifying nodes, Displaying logical groups of a cluster

halt nodes of logical group group_1 except node_exp halt delay "mesg" all group_1 group_2

halt nodes of group_1 and group_2

cmu>

Displaying logical groups of a cluster

The groups command displays the list of the logical groups.

cmu> groups

list of group(s) with active nodes : debian default nodevmap pfmon sfs2

list of available group(s) for backup and cloning : default sfs2 suse10 pfmon testrh3u4 debian nathclontest nodevmap

cmu>

You can also call this command followed by a group name. The result displays all active nodes of the group.

cmu> groups default

active node list selected: o185i194 o185i202 o185i216 o185i222 o185i233 o185i243 o185i252 o185i253 o185i254 cmu>

Displaying nodes of a logical group

To view nodes in a group and the attributes:

cmu> groups <group_name>

For example:

cmu> groups default

active node list selected: o185i194 o185i202 o185i216 o185i222 o185i233 o185i243 o185i252 o185i253 o185i254 cmu>

Displaying nodes of the cluster

The nodes command displays the list of nodes with the attribute name.

cmu> nodes

Machines.node.o185i222 = 16.16.185.222,255.255.248.0,00-00-1A-19-8A-08,default,16.16.189.222,lo100i Machines.node.o185i233 = 16.16.185.233,255.255.248.0,00-00-1A-19-74-93,default,16.16.189.233,lo100i Machines.node.o185i243 = 16.16.185.243,255.255.248.0,00-00-1A-19-90-DD,default,16.16.189.243,lo100i Machines.node.o185i252 = 16.16.185.252,255.255.248.0,00-00-1A-19-7E-7B,default,16.16.189.252,lo100i cmu>

You can also use a subset of this command. The next section describes how to specify subset of nodes in the HP Insight CMU CLI.

6.17.3 Specifying nodes

NOTE: The following commands are HP Insight CMU commands. You can only run them in the HP Insight CMU CLI.

Using the HP Insight CMU CLI, you can execute a command on any number of nodes.

The nodes command:

•Displays node information

•Tests regular expressions for selecting nodes before executing a command

Executing a command on one node

To execute a command on only one node, you must specify the name of the node. The following command executes on node o185i222:

cmu> node o185i222

active node list selected: o185i222 cmu>

6.17 HP Insight CMU CLI 103