0000644: Host with Squid snmp agent is incorrectly treated as being down if "Downed Host Detection" option set to SNMP (or snmp + ping)

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Category

Severity

Reproducibility

Date Submitted

Last Update

0000644

[Cacti] Devices/SNMP/Scripts

minor

always

2005-12-12 21:55

2006-04-30 19:16

Reporter

zaa

View Status

public

Assigned To

Priority

normal

Resolution

no change required

Platform

Status

closed

Projection

none

OS Version

ETA

none

Fixed in Version

Product Version

0.8.6h

Target Version

Product Build

Summary

0000644: Host with Squid snmp agent is incorrectly treated as being down if "Downed Host Detection" option set to SNMP (or snmp + ping)

Description

If "Downed Host Detection" configuration variable includes SNMP query execution, then the snmp query uses
SNMP call for MIB oid: .1.3.6.1.2.1.1.3.0 to a SNMP agent as can be seen in lib/ping.php:

$output = cacti_snmp_get($this->host["hostname"],
                                $this->host["snmp_community"],
                                ".1.3.6.1.2.1.1.3.0" ,
                                $this->host["snmp_version"],
                                $this->host["snmp_username"],
                                $this->host["snmp_password"],
                                $this->host["snmp_port"],
                                $this->host["snmp_timeout"],
                                SNMP_CMDPHP);

The thing is that, for example, Squid's SNMP agent does not provide data for this MIB (although it provides uptime data as OID .1.3.6.1.4.1.3495.1.1.3), thus host is incorrectly shown as being down, although it just does not return SNMP data for the hard coded OID .1.3.6.1.2.1.1.3.0

Workaround: configure SNMP calls proxying in snmpd.conf
Solution: add possibility to set individual SNMP reachibility parameter for each host monitored by cacti system.

Steps To Reproduce

Additional Information

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Notes
(0001725) TheWitness (developer) 2006-04-30 19:16	In Cactid 0.8.6g, the default is to mark a host up if either ping or snmp are valid. In 0.9, you will have much more flexibility. TheWitness

Issue History
Date Modified	Username	Field	Change
2005-12-12 21:55	zaa	New Issue
2006-04-30 19:16	TheWitness	Status	new => closed
2006-04-30 19:16	TheWitness	Note Added: 0001725
2006-04-30 19:16	TheWitness	Resolution	open => no change required

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