Exploring Data Points

Exploring Data Points

This section will describe how you can verify that we are actually persisting the data collected and to learn more about the data being collected. This knowledge will be helpful in the Creating a Visualization article.


First, make sure that you have a valid Monitoring License added to the Nodegrid. Check System : : License, Details column. 


Then, you can explore the raw data points collected by performing the steps below.

1. Click on Dashboard.

2. Click on Discover.

3. Optionally, search for the device you configured in the previous section.

4. Verify that you have data points.

5. Inspect the available fields in each data point.

As the collected data is buffered before being persisted, it may take a couple of cycles before you can visualize the persisted data.

There are numbers of fields that can be used in the search expressions that will be used in the next section. They are:

  1. Data point fields:
    • 1. host
      The name of the device being monitored.
    • 2. plugin
      The name of the plugin collecting the data. Possible values are:
      • 2.1. snmp
      • 2.2. ipmi
      • 2.3. nominal
      • 2.4. aggregation
    • 3. plugin_instance
      The instance of the plugin collecting the data, if the plugin requires it. Present in the aggregation plugin, possible values are:
      • 3.1. sum
      • 3.2. average
    • 4. collectd_type
      The type of the measurement. Possible values are:
      • 4.1. temperature
      • 4.2. humidity
      • 4.3. fanspeed
      • 4.4. timeleft
      • 4.5. power
      • 4.6. apparent_power
      • 4.7. power_factor
      • 4.8. current
      • 4.9. voltage
      • 4.10. frequency
      • 4.11. percent
      • 4.12. counter
    • 5. type_instance
      The name of the element associated with the measurement. For example, a PDU’s outlet or bank would show up as type_instance.
  2. Device fields:
    • 1. name
      The name of the device being monitored.
    • 2. mode
      The operational mode of the device. Possible value are:
      • 2.1. enabled
      • 2.2. ondemand
      • 2.3. disabled
    • 3. type
      The type of the device. Possible values are:
      • 3.1. ilo
      • 3.2. drac
      • 3.3. idrac6
      • 3.4. ipmi_1.5
      • 3.5. ipmi_2.0
      • 3.6. cimc_ucs
      • 3.7. device_console
      • 3.8. pdu_apc
      • 3.9. pdu_mph2
      • 3.10. pdu_pm3000
      • 3.11. pdu_raritan
      • 3.12. pdu_servertech
      • 3.13. pdu_enconnex
    • 4. family
      The family to which the device is a member. Possible values are:
      • 4.1. ilo
      • 4.2. drac
      • 4.3. ipmi_1.5
      • 4.4. ipmi_2.0
      • 4.5. cimc_ucs
      • 4.6. device_console
      • 4.7. pdu
    • 5. addr_location
      The configured location for the device.
    • 6. coordinates
      The coordinates for the device.
    • 7. ip
      The IP address of the device.
    • 8. mac
      The mac address of the device, if known. 
      As MAC addresses have colon in its address, which is understood by the query syntax to separate the field name from its field value, we will need to escape it:
      "00\\:02\\:99\\:11\\:B7\\:1D"
    • 9. alias
      The IP address alias assigned to the device.
    • 10. groups
      The authorization groups to which access to this device have been granted.
    • 11. licensed
      If the device is licensed or not. Possible values:
      • 11.1. yes
      • 11.2. no
    • 12. status
      The current status of the device. Possible values:
      • 12.1. connected
      • 12.2. disconnected
      • 12.3. in-use
      • 12.4. unknown
    • 13. nodegrid
      The hostname of the NodeGrid that controls the device.
  3. Custom fields
    Any custom field configured for the device.

    • Related Articles

    • NodeGrid Monitoring Aggregation Settings

      Here is how to configure a monitoring aggregation. 1) Make sure you have a monitoring license installed. If you don't have one, add one via System > License 2) Make sure you have the devices you want to aggregate configured and monitoring is enabled. ...
    • Enabling Monitoring

      Perform the steps below to enable monitoring for a device, using the interface of your choice, either the CLI or the web. Using the CLI Go to the device’s management settings: cd /settings/devices/<device_name>/management/ Configure monitoring for ...
    • Customizing a Monitoring Template

      There are a number of pre-existing monitoring templates, and if any of them satisfies your needs you can skip to the next section. All templates are text files located under the directories /etc/collectd.templates/snmp /etc/collectd.templates/ipmi ...
    • Data logging

      Data logs capture all information send to a device and coming from a device. You can choose to store the logs locally or remotely. Follow these steps to get Data Logs 1. Login as admin and navigate to Managed Devices 2. Select the target device and ...
    • How to Configure Nodegrid Serial Ports

      To configure the serial ports of your Nodegrid Serial Console, follow the guideline steps below.   WebUI Log in as admin to the Nodegrid Serial Console Web interface. Go to Managed Devices page. Select the serial ports you want to configure, or check ...