Check manual page of dell_powerconnect_temp

dell_powerconnect_temp

Author: Chris Bowlby

License: GPL

Distribution: official part of Check_MK

Supported Agents: SNMP

This check monitors the temperature inside Dell PowerConnect Switches which support the RADLAN-MIB/NetDiscover MIB. It will retreive the temperature (Celcius), and the state of the temperature sensor.

A single service will be created showing the internal temperature at the time the check occurred However, two charts are created that plot the state of the sensor, and the value returned for the temperature.

The state of the check will return an OK value if the sensor is working properly, otherwise it will return a WARNING state if the sensor is no longer available, or a CRITICAL state if the sensor becomes non-functional.

The temperature can also trigger a WARNING or CRITICAL nagios state if the temperature exceeds the defined threshold values for each state.

By default, the temperature returned by the SNMP check is returned in Degrees Celcius.

The Dell PowerConnect manuals indicate the hardware can fail at any temperature over 41 or 42 degrees Celcius, depending on the model.

Currently, testing has been completed with the Dell PowerConnect 5448 and 5424 models, however the service check may work with other models.

Check parameters

Parameter	Type	Description
warning	int	The temperature, in degrees Celcius, at which a warning state is triggered.
critical	int	The temperature, in degrees Celcius, at which a critical state is triggered.

Performance data

The temperature chart uses a single variable, the temperature (0..200) representing the switchs internal temperature in degrees Celcius.

The sensor chart uses a single variable to indicate the state (0..1), where a 1 represents the sensor is "ON". A 0 represents the switch is is "OFF" any any other state where it is non-operational, or unavailable.

Inventory

During the inventory phase of check_mk, it will identify one service Temperature, as long as the MIB defined above is supported on the switch.

Configuration variables

Variable	Type	Description
dell_powerconnect_cpu_default_levels	int, int	The Default percentage values used by the inventory checks. These variables are pre-set to (35, 40).

Examples

It is possible to over-ride the default WARNING and CRITICAL threshold values
defined above, by ensuring the following variable configuration is set in
your local main.mk file.

# Indicate warning at 30 degrees C, and indicate critical for 35 degrees C
dell_powerconnect_temp_default_values = (30, 35)