Sun Microsystems Sun GlassFish Enterprise Server 2.1, Administration Manual

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Example 3
Attempt to get a specific attribute from a subsystem:
asadmin> get --user
admin-user
--monitor server.jvm.uptime-lastsampletime
Returns:
server.jvm.uptime-lastsampletime = 1093215374813
Example 4
Attempt to get an unknown attribute from within a subsystem attribute:
asadmin> get --user
admin-user
--monitor server.jvm.badname
Returns:
No such attribute found from reflecting the corresponding Stats
interface: [badname]
CLI137 Command get failed.
▼
To Use the PetStore Example
The following example illustrates how the
asadmin
tool might be used for monitoring purposes.
A user wants to inspect the number of calls made to a method in the sample
PetStore
application after it has been deployed onto the Enterprise Server. The instance onto which it has
been deployed is named
server
. A combination of the
list
and
get
commands are used to
access desired statistics on a method.
Start the Enterprise Server and the
asadmin
tool.
Set some useful environment variables to avoid entering them for every command:
asadmin> export AS_ADMIN_USER=admin AS_ADMIN_PASSWORD=admin123
asadmin>export AS_ADMIN_HOST=localhost AS_ADMIN_PORT=4848
List monitorable components for instance
server
:
asadmin> list --user adminuser --monitor server*
Returns (output will be similar to):
server
server.applications
server.applications.CometEJB
server.applications.ConverterApp
server.applications.petstore
1
2
3
Viewing Monitoring Data
Chapter 18 • Monitoring Components and Services 199