Using Serviceguard Extension for RAC, 6th Edition, April 2008

1. Move any packages on the node that requires maintenance to a different node.
2. Halt the node that requires maintenance. The cluster will re-form, and activity will
continue on other nodes. Packages on the halted node will switch to other available
nodes if they are configured to switch.
3. Disconnect the power to the node.
4. Disconnect the node from the in-line terminator cable or Y cable if necessary. The
other nodes accessing the bus will encounter no problems as long as the in-line
terminator or Y cable remains connected to the bus.
5. Replace or upgrade hardware on the node, as needed.
6. Reconnect the node to the in-line terminator cable or Y cable if necessary.
7. Reconnect power and reboot the node. If AUTOSTART_CMCLD is set to 1 in the
/etc/rc.config.d/cmcluster file, the node will rejoin the cluster.
8. If necessary, move packages back to the node from their alternate locations and
restart them.
Replacement of I/O Cards
After an I/O card failure, you can replace the card using the following steps. It is not
necessary to bring the cluster down to do this if you are using SCSI inline terminators
or Y cables at each node.
1. Halt the node by using Serviceguard Manager or the cmhaltnode command.
Packages should fail over normally to other nodes.
2. Remove the I/O cable from the card. With SCSI inline terminators, this can be done
without affecting the disks or other nodes on the bus.
3. Using SAM, select the option to do an on-line replacement of an I/O card.
4. Remove the defective I/O card.
5. Install the new card. The new card must be exactly the same card type, and it must
be installed in the same slot as the card you removed.
6. In SAM, select the option to attach the new I/O card.
7. Add the node back into the cluster by using Serviceguard Manager or the
cmrunnode command.
Replacement of LAN Cards
If you have a LAN card failure, which requires the LAN card to be replaced, you can
replace it on-line or off-line depending on the type of hardware and operating system
you are running. It is not necessary to bring the cluster down to do this.
Off-Line Replacement
The following steps show how to replace a LAN card off-line. These steps apply to
both HP-UX 11.0 and 11i:
Replacement of I/O Cards 163