Cyclades AlterPath, User Manual

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Notifications, Alarms, and Data Buffering
AlterPath KVM Installation, Configuration, and Users Guide 41
Syslog Servers
Messages about the KVM, its connected IPDUs, and other connected devices
can be sent to central logging servers, called syslog servers. Data from KVM-
connected computers can optionally be stored in files on syslog servers.
Syslog servers run operating systems that support system logging services,
usually UNIX-based servers with the syslogd configured.
Prerequisites for Logging to Syslog Servers
An already-configured syslog server must have a public IP address that is
accessible from the KVM. The KVM administrator must be able to obtain the
following information from the syslog server’s administrator.
• The IP address of the syslog server
• The facility number for messages coming from the KVM.
Facility numbers are used on the syslog server for handling messages
generated by multiple devices. See “Facility Numbers for Syslog
Messages” on page 42 for more background on how facility numbers are
used.
Facility Numbers for Syslog Messages
Each syslog server has seven local facility numbers available for its system
administrator to assign to different devices or groups of devices at different
locations. The available facility numbers are: Local 0 through Local 7.
Example of Using Facility Numbers
The syslog system administrator sets up a server called “syslogger” to handle
log messages from two KVMs. One KVM is located in São Paulo, Brazil, and
the other KVM is in Fremont, California. The syslog server’s administrator
wants to aggregate messages from the São Paulo KVM into the
local1
facility, and to aggregate messages from Fremont KVM 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
local
2 facility to the
/
var/log/fremont-config
file. While identifying the syslog server using
the Web Manager, according to this example, you would select the facility