Avocent Cyclades ACS, Инструкция по установке/администрированию/использованию

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Chapter 1: Introduction 9
Notifications, Alarms and Data Buffering
The administrator can set up logging, notifications and alarms to alert administrators of problems.
System generated messages on the console server and the connected servers or devices can be sent
to syslog servers for handling. The administrator can also configure data buffering to store data
from communication on serial ports for monitoring.
Data from communication with serial-connected consoles can be stored locally in the console
server’s flash memory or remotely either on an NFS server or a syslog server.
Syslog servers
Messages about the console server and connected servers or devices can be sent to central logging
servers, called syslog servers. Console data from devices connected to serial ports can be stored in
data buffer files on syslog servers. By default, logging and data buffering are not done.
Prerequisites for logging to syslog servers
Before configuring syslogging, ensure that syslog server is pre-configured with a public IP address
and is accessible from the console server. The system administrator must obtain both the IP address
of the syslog server from the syslog server’s administrator and the facility number for messages
from the console server. Facility numbers are used on the syslog server for handling messages
generated by multiple devices.
Facility numbers for syslog messages
Each syslog server has seven local facility numbers available for its administrator to assign to
different devices or groups of devices, at different locations. The available facility numbers are
Local0 through Local7.
Example of using facility numbers
The syslog system administrator sets up a server called syslogger to handle log messages from two
console servers. One console server is located in São Paulo, Brazil and the other in Fremont,
California. The syslog server’s administrator wishes to aggregate messages from the São Paulo
console server into the local1
facility and to aggregate messages from Fremont console server into
the local2 facility.
On syslogger the system administrator has configured the system logging utility to write messages
from the
local1 facility to the /var/log/saopaulo-config file and the messages from the local2
facility to the /var/log/fremont-config file. If you were in Fremont and identifying the syslog server
using the Web Manager, according to this example, you would select the facility number local2
from the Facility Number pull-down menu on the Syslog form.
Managing Users of Connected Devices
This section provides a list of tasks that a Cyclades ACS advanced console server administrator can
perform to enable access to connected devices.