Installation guide

Note
Syncing and activating propagates and activates the updated cluster configuration file.
However, for the quorum disk to operate, you must restart the cluster (refer to Section 6.2,
“ Starting and Stopping a Cluster”), ensuring that you have restarted the q d i skd daemon on
each node.
5.14 . Miscellaneous Clust er Configurat ion
This section describes using the ccs command to configure the following:
Section 5.14.1, “Cluster Configuration Version”
Section 5.14.2, “ Multicast Configuration”
Section 5.14.3, “ Configuring a Two-Node Cluster”
Section 5.14.4, “Logging”
Section 5.14.5, “ Configuring Redundant Ring Protocol”
You can also use the ccs command to set advanced cluster configuration parameters, including
to tem options, d l m options, rm options and cman options. For information on setting these
parameters see the ccs(8) man page and the annotated cluster configuration file schema at
/usr/share/d o c/cman-X. Y . ZZ/cl uster_co nf. html .
To view a list of the miscellaneous cluster attributes that have been configured for a cluster, execute
the following command:
ccs -h host --lsmisc
5.14 .1. Clust er Configurat ion Version
A cluster configuration file includes a cluster configuration version value. The configuration version
value is set to 1 by default when you create a cluster configuration file and it is automatically
incremented each time you modify your cluster configuration. However, if you need to set it to another
value, you can specify it with the following command:
ccs -h host --setversion n
You can get the current configuration version value on an existing cluster configuration file with the
following command:
ccs -h host --getversion
To increment the current configuration version value by 1 in the cluster configuration file on every
node in the cluster, execute the following command:
ccs -h host --incversion
5.14 .2. Mult icast Configurat ion
⁠Chapt er 5. Configuring Red Hat Hig h Availabilit y Add- O n Wit h t he ccs Command
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