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110 IBM Certification Study Guide AIX HACMP
These settings also have to be synchronized throughout the cluster.
Therefore Synchronize Cluster Resources has to be chosen from the
corresponding SMIT Menu.
If the Cluster Manager is running on the local node, synchronizing cluster
resources triggers a dynamic reconfiguration event (DARE, see 8.5.3, “DARE
Resource Migration Utility” on page 169).
4.3.1.2 Configuring Run-Time Parameters
There are two types of Run-Time Parameters for a node that can be chosen.
One of them is the debug level, which can be switched from high to low,
meaning all cluster manager actions are logged, or only errors are logged,
respectively. The other is the differentiation whether the node uses NIS or
DNS nameservice or not, to enable the cluster manager to turn that off in
case it would interfere with its actions. Both of these parameters can be
changed while the cluster is running.
4.3.1.3 Defining Application Servers
Application servers are another resource that can be configured into a
Resource Group. They consist of a (hopefully meaningful) name, in order to
enable the cluster manager to identify the application server uniquely, as well
File Systems
Consistency Check
Identify the method for checking consistency of file
systems, fsck (default) or logredo (for fast recovery).
File Systems Recovery
Method
Identify the recovery method for the file systems, parallel
(for fast recovery) or sequential (default).
Do
not
set this field to parallel if you have shared, nested
file systems. These must be recovered sequentially. (Note
that the cluster verification utility, clverify, does not report
file system and fast recovery inconsistencies.)
File Systems to Export Identify the file systems to be exported to include in this
resource group. These should be a subset of the file
systems listed above. Press F4 for a list.
File Systems to
NFS Mount
Identify the subset of file systems to NFS mount. All nodes
in the resource chain that do not currently hold the
resource will attempt to NFS mount these file systems
while the owner node is active in the cluster.
Service IP Label If IP address takeover is being used, list the IP label to be
moved when this resource group is taken over. Press F4
to see a list of valid IP labels. These include addresses
which rotate or may be taken over.