Managing HP Serviceguard for Linux, Eighth Edition, March 2008

Cluster and Package Maintenance

Reconfiguring a Cluster

Chapter 7 273

Example: Deleting a Subnet Used by a Package

In this example, we are deleting subnet 15.13.170.0 (lan0). Proceed as

follows.

Step 1. Halt any package that uses this subnet and delete the corresponding

networking information (monitored_subnet, ip_subnet, ip_address;

see page 217).

See “Reconfiguring a Package on a Running Cluster” on page 290 for

more information.

Step 2. Run cmquerycl to get the cluster configuration file:

cmquerycl -c cluster1 -C clconfig.ascii

Step 3. Comment out the network interfaces lan0 and lan3 and their network

interfaces, if any, on all affected nodes. The networking portion of the

resulting file looks something like this:

NODE_NAME ftsys9

NETWORK_INTERFACE lan1

HEARTBEAT_IP 192.3.17.18

# NETWORK_INTERFACE lan0

# STATIONARY_IP 15.13.170.18

# NETWORK_INTERFACE lan3

NODE_NAME ftsys10

NETWORK_INTERFACE lan1

HEARTBEAT_IP 192.3.17.19

# NETWORK_INTERFACE lan0

# STATIONARY_IP 15.13.170.19

# NETWORK_INTERFACE lan3

Step 4. Verify the new configuration:

cmcheckconf -C clconfig.ascii

Step 5. Apply the changes to the configuration and distribute the new binary

configuration file to all cluster nodes.:

cmapplyconf -C clconfig.ascii