Nagios snmp checks using PHP

I started using the other SNMP plugins developed in Perl or C, but when our project reached more than 150 snmp checks the system resources lowered until 43% (CPU idle) in a PIII.

I tried to made this plugin in PHP using the snmp lib and the results where absolutly grateful (the 43% CPU idle grow up 88% in a PIII).


Current version (v1.6) allow to:
- new full test feature for CISCO and compatible OID servers. With one check you will have the status of all interfaces (admin and oper status), CPU usage and MEM usage.
- new CPU usage check
- new MEM usage check

And...
Ifaces and traffic
- get the number of interfaces
- check the operational status of one interface
- get the current input thoughput of one interface (in bps)
- get the current output thoughput of one interface (in bps)
- get the bandwidth of one interface (in bps)
- get the current bandwidth usage of one interface (in %)
- get
SAI
- (Merlin gerin) Battery charge level (in %)

The plugin allow parameters like warning and critical values to return a different exit status.

Its developed to run under Nagios, and exit codes are the standard exit codes.

Future releases migth allow more checks.

Requirements:
- php4-cli
- php4-snmp


I hope its useful for someone else, and any suggestions are welcome:

tiochan@remove-this-taggmail.com