Managing HP Serviceguard for Linux, Eighth Edition, March 2008

Troubleshooting Your Cluster
Replacing LAN Cards
Chapter 8 305
Replacing LAN Cards
If you need to replace a LAN card, use the following steps. It is not
necessary to bring the cluster down to do this.
Step 1. Halt the node using the cmhaltnode command.
Step 2. Shut down the system:
shutdown -h
Then power off the system.
Step 3. Remove the defective LAN card.
Step 4. Install the new LAN 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.
Step 5. Power up the system.
Step 6. As the system comes up, the kudzu program on Red Hat systems will
detect and report the hardware changes. Accept the changes and add any
information needed for the new LAN card. On SUSE systems, run YAST2
after the system boots and make adjustments to the NIC setting of the
new LAN card. If the old LAN card was part of a “bond”, the new LAN
card needs to be made part of the bond. See “Implementing Channel
Bonding (Red Hat)” on page 150 or “Implementing Channel Bonding
(SUSE)” on page 153.
Step 7. If necessary, add the node back into the cluster using the cmrunnode
command.
(You can omit this step if the node is configured to join the cluster
automatically.)
Now Serviceguard will detect that the MAC address (LLA) of the card
has changed from the value stored in the cluster binary configuration
file, and it will notify the other nodes in the cluster of the new MAC
address. The cluster will operate normally after this.
HP recommends that you update the new MAC address in the cluster
binary configuration file by re-applying the cluster configuration. Use
the following steps for online reconfiguration: