Installation guide

Parameter Description
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.
Minimum Score The minimum score for a node to be considered "alive". If omitted or
set to 0, the default function, floor((n+1)/2), is used, where n is the
sum of the heuristics scores. The Minimum Score value must never
exceed the sum of the heuristic scores; otherwise, the quorum disk
cannot be available.
Device The storage device the quorum daemon uses. The device must be the
same on all nodes.
Label Specifies the quorum disk label created by the mkqdisk utility. If this
field contains an entry, the label overrides the Device field. If this field
is used, the quorum daemon reads /proc/partitions and checks
for qdisk signatures on every block device found, comparing the label
against the specified label. This is useful in configurations where the
quorum device name differs among nodes.
Heuristics
Path to Program — The program used to determine if this heuristic is
alive. This can be anything that can be executed by /bin/sh -c. A
return value of 0 indicates success; anything else indicates failure.
This field is required.
Interval — The frequency (in seconds) at which the heuristic is polled.
The default interval for every heuristic is 2 seconds.
Score — The weight of this heuristic. Be careful when determining
scores for heuristics. The default score for each heuristic is 1.
Apply Propagates the changes to the cluster configuration file
(/etc/cluster/cluster.conf) in each cluster node.
Table 3.1. Quorum-Disk Parameters
5. Configuring Fence Devices
Configuring fence devices consists of creating, modifying, and deleting fence devices. Creating
a fence device consists of selecting a fence device type and entering parameters for that fence
device (for example, name, IP address, login, and password). Modifying a fence device consists
of selecting an existing fence device and changing parameters for that fence device. Deleting a
fence device consists of selecting an existing fence device and deleting it.
Chapter 3. Configuring Red Hat Cluster With Conga
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