Installation guide

68 Chapter 3:Cluster Software Installation and Configuration
If another user holds the lock, a warning will be displayed indicating that there is already a lock on
the database. The cluster software allows for the option of taking the lock. If the lock is taken by the
current requesting user, the previous holder of the lock can no longer modify the cluster database.
Take the lock only if necessary, because uncoordinated simultaneous configuration sessions may cause
unpredictable cluster behavior. In addition, it is recommended to make only one change to the cluster
database (for example, adding, modifying, or deleting services) at a time. The cluadmin command
line options are as follows:
-d or --debug
Displays extensive diagnostic information.
-h, -?,or--help
Displays help about the utility, and then exits.
-n or --nointeractive
Bypasses the cluadmin utility’s top-level command loop processing. This option is used for
cluadmin debugging purposes.
-t or --tcl
Adds a Tcl command to the cluadmin utility’s top-level command interpreter. To pass a Tcl
command directly to the utility’s internal Tcl interpreter, at the cluadmin> prompt, preface
the Tcl command with tcl. This option is used for cluadmin debugging purposes.
-V or --version
Displays information about the current version of cluadmin.
When the cluadmin utility is invoked without the -n option, the cluadmin> prompt appears.
You can then specify commands and subcommands. Table 3–1,
cluadmin Commands describes the
commands and subcommands for the cluadmin utility: