Red Hat GFS 6.0 -, Administrator'S Manual

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Chapter 7.
Using the Cluster Configuration System
This chapter describes how to use the cluster configuration system (CCS) and consists of the following
sections:
•
Section 7.1 Creating a CCS Archive
•
Section 7.2 Starting CCS in the Cluster
•
Section 7.3 Using Other CCS Administrative Options
•
Section 7.4 Changing CCS Configuration Files
•
Section 7.5 Alternative Methods to Using a CCA Device
•
Section 7.6 Combining CCS Methods
Note
If you are using GFS with Red Hat Cluster, you can create a CCS archive with GFS
Druid . For information about configuring and using GFS with Red Hat Cluster Suite, refer to
Appendix A Using Red Hat GFS with Red Hat Cluster Suite .
Note
If your GFS cluster is configured for GNBD multipath, there are some
considerations you must take into account for the location of CCS files. Refer to
Section 11.2 Considerations for Using GNBD Multipath .
7.1. Creating a CCS Archive
A CCS archive is a collection of CCS configuration files that can be accessed by the cluster. The
ccs_tool
command is used to create a CCS archive from a directory containing
.ccs
configuration
files. This command writes the archive to a shared pool called the CCA device .
A small pool volume may be used as the CCA device. You can determine the size of the CCA
device pool volume as follows: 2 KB per GFS node or 2 MB total, whichever is larger. (Refer
to Section 5.5 Creating a Pool Volume and Section 5.6 Activating/Deactivating a Pool Volume for de-
tails on creating and activating a pool volume for the CCA device.)
7.1.1. Usage
ccs_tool create Directory CCADevice
Directory
The relative path to the directory containing the CCS files for the cluster.