Technical data

3 Node Manager
3-2 Administration Guide
all the Managed Servers on that machine. To ensure availability of Node Manager,
Node Manager should be configured as a daemon on UNIX machines or as a Windows
NT service on Windows NT machines. This ensures that the Node Manager is
available for starting the Managed Servers on that machine.
When the Node Manager is running, it can start or kill any Managed Server installed
and configured on its machine at the request of the Administration Server. All
communication between Node Manager and the Administration Server uses the Secure
Socket Layer protocol.
Node Manager Logs
When you start the WebLogic Server, various startup or error messages may be printed
to
STDOUT or STDERROR. These messages are also displayed in the right pane of the
Administration Console during startup of a server. At other times, these files can be
retrieved by right clicking on the server in the left pane of the Administration Console
and selecting the option Get StdOut for this server or Get StdErr for this server.
The Node Manager saves these messages in files in the Node Manager log file
directory. By default this directory is called
NodeManagerLogs and is created in the
directory where you start the Node Manager. If you want to change the name of the
directory, this can be done from the command line when starting the Node Manager.
For more information, see Command-Line Arguments.
A separate log file subdirectory is created for each Managed Server started by the Node
Manager on that machine. The logs stored in this directory include:
servername.pid
This saves the process ID of the Managed Server named servername. This
is used by the Node Manager to kill the server process when requested by the
Administration Server to do so.
config
This saves startup configuration information passed to the Node Manager
from the Administration Server when starting a Managed Server.
servername-output.log
This saves the information printed to StdOut when an attempt is made by the
Node Manager to start the Managed Server named
servername. If a new
attempt is made to start the server, this file is renamed by appending
_PREV
to the file name.