Users Guide

Troubleshooting 155
Troubleshooting
Setting Alert Actions for Systems Running
Supported Red Hat Enterprise Linux and SUSE
Linux Enterprise Server Operating Systems
When you set Alert Actions for an event, you can specify the action to
Display an alert on the server. To perform this action, Server Administrator
writes a message to /dev/console. If the Server Administrator system is
running an X Window System, you will not see that message by default.
To see the alert message on a Red Hat
®
Enterprise Linux
®
system when the
X Window System is running, you must start xconsole or xterm -C before the
event occurs. To see the alert message on a SUSE
®
Linux Enterprise Server
system when the X Window System is running, you must start xterm -C
before the event occurs.
When you set Alert Actions for an event, you can specify the action to
Broadcast a message. To perform this action, Server Administrator executes
the wall command, which sends the message to everybody logged in with
their message permission set to Yes. If the Server Administrator system is
running an X Window System, you will not see that message by default. To see
the broadcast message when the X Window System is running, you must start
a terminal such as xterm or gnome-terminal before the event occurs.
NOTE: On SUSE Linux Enterprise Server (Version 9), messages sent by wall are
displayed by the xterm terminal program but not by the Konsole terminal program.
When you set Alert Actions for an event, you can specify the action to
Execute application. There are limitations on the applications that Server
Administrator can execute. Follow these guidelines to ensure proper
execution:
• Do not specify X Window System based applications because Server
Administrator cannot execute such applications properly.
• Do not specify applications that require input from the user because
Server Administrator cannot execute such applications properly.