Managing HP Serviceguard A.11.20.10 for Linux, December 2012

1. Halt any package that uses this subnet and delete the corresponding networking information
(monitored_subnet, ip_subnet, ip_address; see the descriptions for these parameters
starting with monitored_subnet (page 175)).
See “Reconfiguring a Package on a Running Cluster ” (page 232) for more information.
2. Run cmquerycl to get the cluster configuration file:
cmquerycl -c cluster1 -C clconfig.conf
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
4. Verify the new configuration:
cmcheckconf -C clconfig.conf
5. Apply the changes to the configuration and distribute the new binary configuration file to all
cluster nodes:
cmapplyconf -C clconfig.conf
7.6.5 Updating the Cluster Lock LUN Configuration Online
Proceed as follows.
IMPORTANT: See “What Happens when You Change the Quorum Configuration Online”
(page 40) for important information.
1. In the cluster configuration file, modify the value of CLUSTER_LOCK_LUN for each node.
2. Run cmcheckconf to check the configuration.
3. Run cmapplyconf to apply the configuration.
If you need to replace the physical device, see “Replacing a Lock LUN” (page 243).
7.6.6 Changing MAX_CONFIGURED_PACKAGES
As of Serviceguard A.11.18, you can change MAX_CONFIGURED_PACKAGES while the cluster
is running. The default for MAX_CONFIGURED_PACKAGES is the maximum number allowed in the
cluster. You can use Serviceguard Manager to change MAX_CONFIGURED_PACKAGES, or
Serviceguard commands as shown below.
Use the cmgetconf command to obtain a current copy of the cluster's existing configuration, for
example:
cmgetconf -C <cluster_name> clconfig.conf
Edit the clconfig.conf file to include the new value for MAX_CONFIGURED_PACKAGES. Then
use the cmcheckconf command to verify the new configuration. Using the -k or -K option can
significantly reduce the response time.
Use the cmapplyconf command to apply the changes to the configuration and send the new
configuration file to all cluster nodes. Using -k or -K can significantly reduce the response time.
224 Cluster and Package Maintenance