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Monitoring Event Messages
Guardian User’s Guide — 425266-001
17- 2
Understanding Operator Messages
Understanding Operator Messages
When a subsystem or component of the Compaq NonStop™ Kernel operating system
detects an event that might affect its operation, it generates a message that describes the
event. When an event message is intended to be seen, and perhaps acted upon, it is
converted into displayable text and called an operator message.
Operator messages include system-generated and user-generated messages. System-
generated messages are produced by the NonStop™ Kernel operating system and by
NonStop™ Kernel subsystems as they monitor and manage system resources. User-
generated messages are produced by user-written applications and are not covered in
this guide. You should be familiar with this operator message terminology:
Messages Term
Definition
Event message
A message sent by the operating system or a reporting application that
describes an event that occurred in a system or network. They do not
appear in a readable format; they are converted into operator messages.
Operator
message
Event message that has been converted into readable text. Operator
messages can be displayed in different formats, depending on the
application that formats them.
Collector
Event Management Service (EMS) process that accepts event messages
from subsystems and logs them in an event log.
Event log
File or set of files maintained by EMS to store event messages generated
by various subsystems.
Distributor
process
EMS process that distributes event messages from event logs to
requesting management applications, another collector on this or another
node, or printers, devices, or files. EMS provides several distributors:
•
Consumer distributor
•
Forwarding distributor
•
Printing distributor
•
Compatibility distributor ($Z0)
Consumer
distributor
EMS distributor that returns selected event messages to management
applications upon request. The distributor is used by NonStop™ Kernel
applications (such as TSM EMS Event Viewer) and by users to read EMS
or alternate log files and all or specific event messages, depending on
filter specifications loaded to the distributor. The application can take
appropriate action, if necessary, in response to important events.
Forwarding
distributor
EMS distributor that sends selected event messages to an EMS collector
on another network node or, if the node has multiple collectors, to an
EMS collector on the same node.
Printing
distributor
EMS distributor that sends operator messages to printers, devices,
processes, or files.
Compatibility
distributor ($Z0)
Allows downward compatibility with a previous operator process. The
compatibility distributor sends operator messages to a console device
during system load.
Summary of Contents for Guardian
Page 24: ...About This Guide Guardian User s Guide 425266 001 xxii Your Comments Invited ...
Page 100: ...Part II Managing Files Using the File Utility Program FUP Guardian User s Guide 425266 001 ...
Page 146: ...Part III Managing Disk and Tape Processes Guardian User s Guide 425266 001 ...
Page 234: ...Part IV Using the Spooler and Its Utilities Guardian User s Guide 425266 001 ...
Page 322: ...Part V Security Features and Other Guardian Utilities Guardian User s Guide 425266 001 ...
Page 368: ...Monitoring Event Messages Guardian User s Guide 425266 001 17 14 Using the Event Viewer ...
Page 460: ...Index Guardian User s Guide 425266 001 Index 24 Special Characters ...