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Posts Tagged ‘OSS’

Zabbix Proxy: distributed NMS monitoring via embedded Linux (Ubuntu on BeagleBoard)

As already mentioned in previous post’s introduction, proof of concept on how Zabbix Proxy works under unreliable communication is what this next post about. The idea is to have these scenarios tested: independent SNMP data polling by individual NMS proxy (embedded system) intermittent connection between main/master NMS server with its proxy Of course we’ll do [...]

Compile Zabbix Proxy in Ubuntu ARM (BeagleBoard)

I needed to tackle practical limitation of SNMP monitoring under unreliable communication, a serious consideration was made for Zabbix Proxy. It was an option said to be ready for embedded hardware. I already had BeagleBoard xM Rev C running Ubuntu 11.10 Oneiric and needed to proof that it would port functionally to this Linux ARM [...]

Acknowledging Event: Zabbix Python API

Acknowledgement is one of the things that is provided by Zabbix API in its event section. We can make use of the methods get() and acknowledge() to automatically acknowledge an event. Digging through the attributes of those methods, the official doc doesn’t provide complete example to follow. Added with some luck, my search get me [...]

SNMP: Mistake of Using Tabular OID in Practice

Recently, I retrieve rectifier-related SNMP data from Eltek’s Smartpack Controller. This one has the following rear type where we can connect to the ethernet plug (see the purple area). It is presumably in its default configuration and I can snmpwalk through its corporate specific OIDs (under 12148 tree) to find i.e. output voltage, current, battery [...]

Write Your Own MIB File (Tabular)

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When it comes to writing our own MIB, a practical choice might be to write the whole objects as of scalar type (RFC-1212). That means, let’s say we have 2 battery statuses, each of them must be explicitly written individually within the MIB file. Example of calling their voltages: $ snmpwalk -m +REKTRONIK-MIB -v 1 [...]

Running Raddle (2): snmpd & Replay Custom Private Enterprise MIB

Net-SNMP wiki gives tutorial on extending snmpd using Perl. In basic run of Raddle (previous post) this involves r1.pl called by r1.conf fed to snmpd. Private enterprise MIB i.e.¬†Microchip’s in this example can be replayed without really ever captured the real device’s SNMP data. This is necessary when the actual device is yet existed; normal [...]

Running Raddle in RHEL

Raddle is a great SNMP player written in Perl. I say player to this emulator application, meaning that I can append or dump snmpwalk output from a device and then replay that from Raddle. Installing it can be both simple and tedious tasks. I used Red Hat Enterprise Linux 5.2 inside a virtual machine (VirtualBox) [...]

Install Nagios 3 and Plugins

Quickstart I decided to install in RedHat 5.2. Maybe it is easier in Ubuntu (Nagios 3 already listed in the repository, but I haven’t tried it). As pointed out by the quickstart (it is meant for Fedora by the way), requirements are: php, httpd gcc, glibc, glibc-common gd, gd-devel After getting those, the configure-make-install procedure [...]