Installation guide

A virtual machine resource requires at least a name and a path attribute. The name attribute should
match the name of the l i bvi rt domain and the path attribute should specify the directory where the
shared virtual machine definitions are stored.
Note
The path attribute in the cluster configuration file is a path specification or a directory name,
not a path to an individual file.
If virtual machine definitions are stored on a shared directory named /mnt/vm_d efs, the following
command will define a virtual machine named g uest1:
# ccs -h no d e1. example. co m --ad d vm g uest1 path= /mnt/vm_d efs
Running this command adds the following line to the rm configuration node in the cl uster.co nf
file:
<vm name="guest1" path="/mnt/vm_defs"/>
5.13. Configuring a Quorum Disk
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.
Use the following command to configure your system for using a quorum disk:
ccs -h host --setquorumd [quorumd options]
Note that this command resets all other properties that you can set with the --setq uo rumd option to
their default values, as described in Section 5.1.5, “ Commands that Overwrite Previous Settings” .
Table 5.1, “ Quorum Disk Options” summarizes the meaning of the quorum disk options you may
need to set. For a complete list of quorum disk parameters, refer to the cluster schema at
/usr/share/cluster/cl uster.rng , and the annotated schema at /usr/share/d o c/cman-
X. Y . ZZ/cluster_conf. html .
T ab le 5.1. Q u o ru m Disk O p t io n s
Paramet er Descrip t io n
in t erval The frequency of read/write cycles, in seconds.
vot es The number of votes the quorum daemon advertises to cman when it has
a high enough score.
t ko The number of cycles a node must miss to be declared dead.
⁠Chapt er 5. Configuring Red Hat Hig h Availabilit y Add- O n Wit h t he ccs Command
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