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Chapter 9. Cluster power down
Contents
Power down the system
Because the operating system is installed on each node, the power down
procedures are relatively simple.
1. Log off Cluster Nodes and Storage Nodes. If CSM is installed on the
2. Power down the following devices in the order listed.
3. Power down the PDUs or unplug, from the PDU, the devices that have no
4. Unplug the PDUs from the wall outlet.
Lights out or brown out
The following sequence will occur in a lights out scenario:
1. The system is up and running typical applications.
2. A lights out/brown out event occurs. The system powers down then powers
3. All nodes power back up to the last known state (on/off). If the last known
4. Log files will show system restart events on nodes and on RSA cards. Check
Related topics
v Chapter 5, "Power up the cluster", on page 31
v Appendix B, "Error Logs", on page 125
© Copyright IBM Corp. 2003
Management Node, execute the rpower off -A command to power down the
Cluster Nodes. If CSM is not installed, power down the Cluster Nodes
manually with the power switch.
a. Storage Nodes
b. Management Node
c. Storage Controllers
d. Storage Expansion Units
power switch.
v To power down the PDUs, unplug them from the wall outlet.
Note: The following devices have no power switch and must be unplugged if
the PDUs are not powered down.
v KVM Switch
v Cisco 10/100 Switch
v Cisco Gigabit Switch
v iTouch terminal server
up via an external source.
state is on, then the nodes will boot to a login prompt.
the following log files.
v /var/log/messages
v /var/log/csm/installnode.log
v RSA event log.
v BIOS event log
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Troubleshooting
