203
check_udp
check_ups
check_users
These plug-ins from the Nagios plug-ins package can be downloaded from ftp.opengear.com.
There also are bash scripts which can be downloaded and run (primarily check_log.sh).
To configure additional checks the downloaded plug-in program must be saved in the tftp addins
directory on the USB flash and the downloaded text plug-in file saved in /etc/config
To enable these new additional checks you select
Serial & Network > Network Port
,
Edit
the Network
Host to be monitored, and select
New Checks
. The additional check option will have been included in
the updated
Nagios
Checks
list, and you can again customize the arguments
If you need other plug-ins to be loaded into the CM7100 or IM7200 firmware:
§
If the plug-in in a Perl script, it must be rewritten as the console server does not support Perl.
However, if you do require Perl support, make a feature request to [email protected]
§
Individual compiled programs may be generated using gcc for ARM. Contact
[email protected] for details
9.3.4 Number of supported devices
The number of devices that can be supported by any particular console server is a function of the number
of checks being made, and how often they are performed. Access method will also play a part. The table
below shows the performance of three of the console server models (1/2 port, 8 port and 16/48 port)
tabulating:
Time
No encryption
3DES
SSH tunnel
NSCA for single check
~ ½ second
~ ½ second
~ ½ second
NSCA for 100 sequential checks
100 seconds
100 seconds
100 seconds
NSCA for 10 sequential checks, batched
upload
1 ½ seconds
2 seconds
1 second
NSCA for 100 sequential checks,
batched upload
7 seconds
11 seconds
6 seconds
