EMS Manual

EMS Components and Architecture
EMS Manual—426909-005
2-9
Distributor Support
Primary Collector Log-File Attributes
The primary collector assumes default values for log file parameters at system
generation. You can change the values programmatically through the collector's SPI
ALTER or CONTROL commands or interactively through the EMSCCTRL utility.
For a description of the collector's command-response interface, see Section 19,
Collector Commands and Responses. For a description of EMSCCTRL, see
EMSCCTRL—Control Collector Utility on page 13-9.
Alternate Collector Log-File Attributes
You can assign values to the parameters that control alternate collector log files when
you issue the RUN command to start the collector. If you do not specify a value for a
log-file parameter, EMS uses a default value. You can change the values of some
attributes programmatically by using the SPI CONTROL command or interactively
through the EMSCCTRL program.
Distributor Support
In addition to logging event messages for retrieval by distributors, both the primary and
alternate collectors support the forwarding, consumer, and printing distributors by:

Notifying distributors when new event messages are logged

Accepting event messages forwarded from another node by a forwarding
distributor
Event Message Distributors
Event-message distributors have three basic functions:

Accessing one or more log files

Filtering event messages

Routing the selected event messages to the appropriate destination