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Unix System Administration Handbook 1997 October
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INDEX ENTRY FOR NOCOL:
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Name: NOCOL - Network monitoring package
Version: 4.01 and 4.2beta5
NOTE: A new version of NOCOL is expected to be released soon.
Look up http://www.netplex-tech.com/software/nocol for more information.
Author(s): Vikas Aggarwal <vikas@navya.com>
with contributions from many
On the CD-ROM in: network/nocol.tar
Ftp source: ftp.navya.com:/pub/vikas
Size on the CD: 911 KB (compressed)
Description:
NOCOL/NetConsole (Network Operation Center On-Line) is a network
monitoring package that runs on Unix platforms and capable of
monitoring network and system variables such as ICMP or RPC
reachability, RMON variables, nameservers, ethernet load, port
reachability, host performance, SNMP traps, modem line usage,
appletalk & novell routes/services, BGP peers, etc. The software
is extensible and new monitors can be added easily.
The software consists of a number of individual, standalone
monitoring agents that poll the various network and system
parameters and put it into a common data format. All the monitors
have a common display and postprocessing interface (such as
logging, notification, etc.). The design allows running just one
set of monitoring agents and *any* number of display agents, and
all of the displays see the same consistent set of data.
Additionally, each event is assigned a severity (determined by
comparing against user defined threshold values) which is
gradually escalated, thus preventing false alarms and a
customized priority notification based on the severity. There are
four severity levels ranging from Critical thru Info, and each
event typically steps through each one of these severities until
it reaches its maximum allowed level.
The display uses UNIX 'curses' screen management and can thus run
on a large variety of terminals. The user running the display can
select the minimum display severity-only events above this
minimum severity level are displayed.
A Web interface has also been added which uses the HTML REFRESH
meta tag for displaying the nocol events.
To date, the various monitoring agents developed are:
- IP ICMP monitor (using IP 'multiping')
- OSI reachability monitor (using OSI ping)
- RPC portmapper monitor (using 'rpcping')
- Ethernet load (bandwidth & pps)
- TCP port monitor
- Unix host performance (disks, memory, swap, load, nfs, collisions)
- SNMP variables monitor (RMON, Cisco router, terminal server)
- TCP data throughput monitor
- Nameserver (named)
- SNMP traps
- Syslog logfile monitor (for specified patterns)
- NTP stratum of hosts (Network Time Protocol)
- UPS (APC) battery level monitor
- Usage of terminal server modem lines (busy lines)
- Appletalk route monitor (for cisco routers)
- Novell service monitor
- BGP peer status
A PERL interface is available for developing additional monitors in
the PERL programming language (it is fairly easy to add additional
monitors to the package).
-- Quoted from the README file in the distribution.
Advertised architectures:
The README says "Has been compiled on Solaris2.2, SunOS4.1.1,
Ultrix4.2, BSDI/386." The file PORTING gives hints for compiling
on these and also HP/UX, DEC OSF, AIX3.2.
Prerequisites: C Compiler, gunzip utility, and Perl.