Enable the remote agent on external nodes.
Before you begin
The remote agent that is described in this task is not
shipped with WebSphere® Virtual Enterprise Version
6.1. The middleware agent that is provided with Version 6.1 replaces
the remote agent. See Installing in other server environments for more information.
Set
up generic server clusters with ports for all of your external nodes.
About this task
By installing the mixed server environment, a lightweight Java process called the remote agent runs on
the node that is being monitored. There is also a plug-in that polls
the remote agent for CPU information. The plug-in runs in the on demand
router that has the work profiler running.
Procedure
- Start the remote agent on nodes that you want to monitor. On a command line for each node, start the remote agent.
- Navigate to the directory where the remote agent is
installed. For example, type cd <installed_dir>/bin.
- Start the remote agent. Run ./startAgent.sh or startagent.bat.
Note: If you start the remote agent using the startAgent.sh or startAgent.bat script
from the bin directory, the Java Runtime
Environment (JRE that is bundled with the installer is used. The JRE
is installed in the _jvm subdirectory of the _uninstXD directory.
You can also supply the port number as a parameter to the script
if the default port, 9980, is used by another process that
is running on the node. By default, the remote agent can
be run by any user. You can limit access to the directory that contains
the remote agent for increased security.
- Optional: Stop the remote agent. To
stop the remote agent, use the command window where you started the
remote agent. Type the command quit. You can also
stop the remote agent by pressing Control-C or
by using the UNIX kill command if
you are running AIX®, HP-UX, Linux,
or Solaris.
Results
The remote agent sends average CPU utilization, node speed,
number of CPUs, and several other attributes and values to the plug-in
that polls the remote agent for CPU information.
Example
You can start the remote agent in any way that a standalone Java program can be started. You can run the
remote agent in the background.
On the Windows platform,
you can start the remote agent as a scheduled task during system startup.
- From Windows, click Start > Settings
> Control Panel > Scheduled Tasks > Add Scheduled Task.
- In the Scheduled Task Wizard, navigate to the bin directory where
you installed the WebSphere Extended Deployment
mixed server environment and select startAgent.bat.
- Specify when you want to perform the task. For example, choose When
my computer starts.
- Specify the user ID and password for the user that you want to
use to run startAgent.bat.
On the Linux or UNIX operating
system, add an entry to the
/etc/inittab file
of the operating system. If you installed the feature in the /opt/WAS60/MixedServer
directory, the new entry for the file is:
was:2:once:/opt/WAS60/MixedServer/bin/startAgent.sh >/dev/console 2>&1
For
more information, see the UNIX manual page on
inittab by
typing
man inittabb.
What to do next
Enabling the remote agent is a requirement when routing requests
to nodes that are not running
WebSphere Virtual Enterprise.
See
Routing requests to external nodes with generic server clusters for more information.