Sensor management options

An authorized user or administrative user can view graphical displays of sensor data collected from servers by their SPs. These users can also modify graph display settings through the Web Manager, the user shell menu or by using the ssh command with the sensor commands.

Figure 1.2 shows an example graph.

Example Graph for Readings From a Fan Sensor

The sensor value in the graph heading varies with the type of data being measured and the type of SP. The example fan sensor reading in Figure 1.2 has a heading Time Vs. % because the sensor is measuring the percentage of total possible fan speed. Examples of other possible values for sensor_value are Volts, Degrees Centigrade and Degrees Fahrenheit.

Table 1.11 shows graph features that can be modified. An error message appears if you enter a value that is greater than or lower than the supported range of values.

Sensor Graph Parameters  

Field/Menu	Use	Default	Allowed Values
y-Axis Boxes	Specify a different number of rows.	10	1-55
x-Axis Boxes	Specify a different number of columns. Each graph cell represents the interval between readings.	300	1-999
Min Y Value	Specify a different minimum sensor value to be plotted on the x axis. The only valid keys are numeric keys, period (.) and hyphen (-).	Varies with the type of sensor	Varies with the type of sensor
Max Y Value	Specify a different maximum sensor value to be plotted on the y axis. The only valid keys are numeric keys, period (.) and hyphen (-).	Varies with the type of sensor	Varies with the type of sensor
Mean Y Value	Specify a different mean value to use as a basis for comparison with the actual detected value. The only valid keys are numeric keys, period (.) and hyphen (-). In line graphs, the Mean Temp is indicated by a black horizontal line. In bar graphs, the colors of the bars indicate the following: • Blue – Less than the mean Y value. • Red – Greater than mean Y value. • Black – Equal to the mean Y value.	Varies with the type of sensor	Varies with the type of sensor
Time Interval	Specify a different frequency in seconds for fetching sensor data. The only valid keys are numeric keys.	5	5-300
Graph Type	Choose another graph type.	Line Graph	Line Graph or Bar Graph
Grid Line Color	Choose another color for the lines.	• white	• yellow • green • cyan • gray • darkgray • lightgray • magenta • orange • pink • white
Graph BG Color	Select the background color.	• light gray	• yellow • green • cyan • gray • darkgray • lightgray • magenta • orange • pink • white

For procedures for monitoring sensors, see To view a server’s sensor data from an SP (Web Manager):.

Table 1.12 shows the sensor management options available when you are logged into the Web Manager, when you have selected a device from the onbdshell menu on the OnBoard appliance console and when you are entering the ssh command on a remote workstation. The sensor options display unformatted sensor data collected from the server by its SP. The page that appears provides a button that when clicked displays graphs of data from individual sensors.

The sensor management options are only available for managed servers with SPs.

Sensor Management Options 

Method	Command or Option
Web Manager	Sensors
onbdshell menu in the OnBoard appliance console	sensors
ssh command	sensors