Red Hat Cluster for Enterprise Linux 5 Configuration page 70

4. Backing Up and Restoring the Cluster Database
Each time you save a configuration file, the Cluster Configuration Tool saves backup copies
of the three most recently used configuration files as
etc/cluster/cluster.conf.bak.2
etc/cluster/cluster.conf.bak.1
second newest backup, and
If a cluster member becomes inoperable because of misconfiguration, restore the configuration
file according to the following steps:
1. At the Cluster Configuration Tool tab of the Red Hat Cluster Suite management GUI,
click File => Open.
2. Clicking File => Open causes the system-config-cluster dialog box to be displayed.
3. At the the system-config-cluster dialog box, select a backup file (for example,
etc/cluster/cluster.conf.bak.1
OK.
4. Increment the configuration version beyond the current working version number as follows:
a. Click Cluster => Edit Cluster Properties.
b. At the Cluster Properties dialog box, change the Config Version value and click OK.
5. Click File => Save As.
6. Clicking File => Save As causes the system-config-cluster dialog box to be displayed.
7. At the the system-config-cluster dialog box, select
OK. (Verify the file selection in the Selection box.)
8. Clicking OK causes an Information dialog box to be displayed. At that dialog box, click
OK.
9. Propagate the updated configuration file throughout the cluster by clicking Send to Cluster.
Note
The Cluster Configuration Tool does not display the Send to Cluster button
if the cluster is new and has not been started yet, or if the node from which
you are running the Cluster Configuration Tool is not a member of the
cluster. If the Send to Cluster button is not displayed, you can still use the
Cluster Configuration Tool; however, you cannot propagate the configura-
tion. You can still save the configuration file. For information about using the
Cluster Configuration Tool for a new cluster configuration, refer to
Chapter 4, Configuring Red Hat Cluster With system-config-cluster.
10. Clicking Send to Cluster causes a Warning dialog box to be displayed. Click Yes to
propagate the configuration.
, and
/etc/cluster/cluster.conf.bak.3
is the newest backup,
/etc/cluster/cluster.conf.bak.3
). Verify the file selection in the Selection box and click
62
/etc/cluster/cluster.conf.bak.1
. The backup file
/etc/cluster/cluster.conf.bak.2
is the third newest backup.
/etc/cluster/cluster.conf
,
/
/
is the
/
and click