Red Hat CLUSTER FOR ENTERPRISE LINUX 5.0, Руководство по настройке

Страница: 41 / 114

3. Multicast tab — This tab provides an interface for configuring these Multicast
Configuration parameters: Let cluster choose the multicast address and Specify the
multicast address manually. Red Hat Cluster software chooses a multicast address for
cluster management communication among cluster nodes; therefore, the default setting is
Let cluster choose the multicast address. If you need to use a specific multicast address,
click Specify the multicast address manually, enter a multicast address into the text box,
and click Apply for changes to take effect.
4. Quorum Partition tab — This tab provides an interface for configuring these Quorum
Partition Configuration parameters: Do not use a Quorum Partition, Use a Quorum
Partition, Interval, Votes, TKO, Minimum Score, Device, Label, and Heuristics. The Do
not use a Quorum Partition parameter is enabled by default. Table 3.1, “Quorum-Disk
Parameters” describes the parameters. If you need to use a quorum disk, click Use a
Quorum Partition, enter quorum disk parameters, click Apply, and restart the cluster for the
changes to take effect.
Important
Quorum-disk parameters and heuristics depend on the site environment and the
special requirements needed. To understand the use of quorum-disk parameters
and heuristics, refer to the qdisk(5) man page. If you require assistance
understanding and using quorum disk, contact an authorized Red Hat support
representative.
Note
Clicking Apply on the Quorum Partition tab propagates changes to the cluster
configuration file (
/etc/cluster/cluster.conf
) in each cluster node. However,
for the quorum disk to operate, you must restart the cluster (refer to Section 1,
“Starting, Stopping, and Deleting Clusters” ).
Parameter Description
Do not use a
Quorum Partition
Disables quorum partition. Disables quorum-disk parameters in the
Quorum Partition tab.
Use a Quorum
Partition
Enables quorum partition. Enables quorum-disk parameters in the
Quorum Partition tab.
Interval The frequency of read/write cycles, in seconds.
Votes The number of votes the quorum daemon advertises to CMAN when it
has a high enough score.
TKO The number of cycles a node must miss to be declared dead.
Global Cluster Properties
31