HP Insight Cluster Management Utility manual Rebooting a set of nodes, Halting a set of nodes

To broadcast on all nodes of the cluster:

cmu> broadcast all

selected nodes: o185i192 o185i193 o185i194 o185i195 o185i196 o185i197 o185i198 o185i199 o185i200 o185i201 o185i202 o185i203 o185i204 o185i205 o185i206 o185i207 o185i208 o185i209 o185i210 o185i211 o185i212 o185i213 o185i214 o185i215 o185i216 o185i217 o185i218 o185i219 o185i220 o185i221 o185i222 o185i223 o185i224 o185i225 o185i226 o185i227 o185i228 o185i229 o185i230 o185i231 o185i232 o185i233 o185i234 o185i235 o185i236 o185i237 o185i238 o185i239 o185i240 o185i241 o185i242 o185i243 o185i244 o185i245 o185i246 o185i247 o185i248 o185i249 o185i250 o185i251 o185i252 o185i253 o185i254 o185i255

CMU pdsh interface dshbak filter is <ON> helph? to get help cmu_pdsh>

Rebooting a set of nodes

Enables rebooting any number of nodes in the cluster. You can use all the regular expressions previously described.

cmu> reboot delay "message" cmu_nodes_regular_expression

where

delay

Indicates the time period after which the specified nodes are rebooted. It can be “now” or after “1”, “5”, “10”, “15”, “30”, or “60” minutes.

message

A string that appears on every rebooted node.

cmu> reboot 1 "Reboot for maintenance" o185i192

active node list selected: o185i192

Rebooting the nodes

..Return-->Command too long to execute<--:wait_for_command:

.Please read /opt/cmu/log/Reboot.log to check errors cmu>

Halting a set of nodes

Halts any number of nodes in the cluster. You can use the regular expressions previously described.

cmu> halt delay "message" cmu_nodes_regular_expression

where

delay

Indicates the time period after which the specified nodes are halted. It can be “now” or after “1”, “5”, “10”, “15”, “30”, or “60” minutes.

message

A string that appears on every halted node.

cmu> halt now "Halt for maintenance" o185i192

active node list selected: o185i192

Halting the nodes

..Please read /opt/cmu/log/Halt.log to check errors cmu>

Powering off a set of nodes

Powers off any number of nodes in the cluster. You can use all the regular expressions previously described.

cmu> power off cmu_nodes_regular_expression

For example:

cmu> power off o185i192

106 Managing a cluster with HP Insight CMU