rpower - remote power control of nodes


rpower noderange [–nodeps] [on|onstandby|off|suspend|stat|state|reset|boot] [-m table.column==expectedstatus [-m table.column=~expectedstatus]] [-t timeout] [-r retrycount]

rpower [-h|–help|-v|–version]

BMC (using IPMI) specific:

rpower noderange [on|off|softoff|reset|boot|stat|state|status|wake|suspend [-w timeout] [-o] [-r]]

PPC (with IVM or HMC) specific:

rpower noderange [–nodeps] {of}

CEC (with HMC) specific:

rpower noderange [on|off|reset|boot|onstandby]

LPAR (with HMC) specific:

rpower noderange [on|off|stat|state|reset|boot|of|sms|softoff]

CEC (using Direct FSP Management) specific:

rpower noderange [onstandby|stat|state] [-T tooltype]

rpower noderange [on|off|resetsp]

Frame (using Direct FSP Management) specific:

rpower noderange [rackstandby|exit_rackstandby|stat|state|resetsp]

LPAR (using Direct FSP Management) specific:

rpower noderange [on|off|stat|state|reset|boot|of|sms]

Blade (using Direct FSP Management) specific:

rpower noderange [on|onstandby|off|stat|state|sms]

Blade specific:

rpower noderange [cycle|softoff]

zVM specific:

rpower noderange [on|off|reset|stat|softoff]


rpower controls the power for a single or range of nodes, via the out-of-band path.



Turn power on.


Turn power on to standby state


The value could be lpar or fnm. The tooltype value lpar is for xCAT and fnm is for CNM. The default value is “lpar”. For cold start in the large cluster, it will save a lot of time if the admins use “rpower noderange onstandby -T fnm” to power on all the CECs from the management node through the fnm connections.


Places the rack in the rack standby state. It requires that all CECs and DE be powered off before it will run.


Exit Rack standby will be the default state that a rack goes into when power is initially applied to the rack. It simply moves the BPA from Rack standby to both bpa’s in standby state.


Reboot the service processor. If there are primary and secondary FSPs/BPAs of one cec/frame, it will reboot them almost at the sametime.


Attempt to request clean shutdown of OS (may not detect failures in completing command)


Turn power off.


Suspend the target nodes execution.

The suspend action could be run together with -w -o -r.

Refer to the following steps to enable the suspend function:

  1. Add the ‘acpid’ and ‘suspend’(the suspend package is not needed on RHEL) package to the .pkglist of your osimage so that the required package could be installed correctly to your target system.
  2. Add two configuration files for the base function:
    S2RAM_OPTS="--force --vbe_save --vbe_post --vbe_mode"

  1. Add the hook files for your specific applications which need specific action before or after the suspend action.

Refer to the ‘pm-utils’ package for how to create the specific hook files.


Wake up the target nodes which is in suspend state.

Don’t try to run wake against the ‘on’ state node, it would cause the node gets to ‘off’ state.

For some of xCAT hardware such as NeXtScale, it may need to enable S3 before using wake. The following steps can be used to enable S3. Please reference pasu(1)|pasu.1 for “pasu” usage.

[root@xcatmn home]# echo "set Power.S3Enable Enable" > power-setting
[root@xcatmn home]# pasu -b power-setting node01
node01: Batch mode start.
node01: [set Power.S3Enable Enable]
node01: Power.S3Enable=Enable
node01: Beginning intermediate batch update.
node01: Waiting for command completion status.
node01: Command completed successfully.
node01: Completed intermediate batch update.
node01: Batch mode completed successfully.

[root@xcatmn home]# pasu node01 show all|grep -i s3
node01: IMM.Community_HostIPAddress3.1=
node01: IMM.Community_HostIPAddress3.2=
node01: IMM.Community_HostIPAddress3.3=
node01: IMM.DNS_IP_Address3=
node01: IMM.IPv6DNS_IP_Address3=::
node01: Power.S3Enable=Enable


Print the current power state/status.


Send a hard reset.


If off, then power on. If on, then hard reset. This option is recommended over cycle.


Power off, then on.


Boot the node to open firmware console mode.


Boot the node to open firmware SMS menu mode.

-m table.column==expectedstatus -m table.column=~expectedstatus

Use one or multiple -m flags to specify the node attributes and the expected status for the node installation monitoring and automatic retry mechanism. The operators ==, !=, =~ and !~ are valid. This flag must be used with -t flag.

Note: if the “val” fields includes spaces or any other characters that will be parsed by shell, the “attr<oper-ator>val” needs to be quoted. If the operator is ”!~”, the “attr<operator>val” needs to be quoted using single quote.


Do not use dependency table (default is to use dependency table). Valid only with on|off|boot|reset|cycle for blade power method and on|off|reset|softoff for hmc/fsp power method.

-r retrycount

specify the number of retries that the monitoring process will perform before declare the failure. The default value is 3. Setting the retrycount to 0 means only monitoring the os installation progress and will not re-initiate the installation if the node status has not been changed to the expected value after timeout. This flag must be used with -m flag.

-t timeout

Specify the the timeout, in minutes, to wait for the expectedstatus specified by -m flag. This is a required flag if the -m flag is specified.

Power off, then on.

-w timeout

To set the timeout for the suspend action to wait for the success.


To specify that the target node will be power down if suspend action failed.


To specify that the target node will be reset if suspend action failed.


Prints out a brief usage message.


Display the version number.



rpower node4,node5 stat

node4: on
node5: off


rpower node5 on

node5: on


noderange(3)|noderange.3, rcons(1)|rcons.1, rinv(1)|rinv.1, rvitals(1)|rvitals.1, rscan(1)|rscan.1