lm_sensors

Description

This connector enables the monitoring of environment sensors on Linux, through the sensors command.

hardware linux

Superseded Connector

This connector is superseded by:

• IpmiTool

Target

Typical platform: Linux

Operating system: Linux

Prerequisites

Leverages: lm_sensors

Technology and protocols: Commands

This connector requires advanced privileges on the managed host for the commands below:

• /usr/sbin/dmidecode
• /usr/bin/sensors

This connector therefore needs to run as root or you need to configure a privilege-escalation mechanism like sudo on the managed host to allow the monitoring account to run the commands listed above.

Sample of /etc/sudoers to allow the above commands to be run as root by the metricshub account:

metricshub ALL=(root) NOPASSWD: /usr/sbin/dmidecode
metricshub ALL=(root) NOPASSWD: /usr/bin/sensors

Examples

CLI

metricshub HOSTNAME -t linux -c +lmsensors --ssh -u USER --sudo-command-list /usr/sbin/dmidecode,/usr/bin/sensors

metricshub.yaml

resourceGroups:
  <RESOURCE_GROUP>:
    resources:
      <HOSTNAME-ID>:
        attributes:
          host.name: <HOSTNAME> # Change with actual host name
          host.type: linux
        connectors: [ +lmsensors ] # Optional, to load only this connector
        protocols:
          ssh:
            username: <USERNAME> # Change with actual credentials
            password: <PASSWORD> # Encrypted using metricshub-encrypt
            useSudo: true
            useSudoCommands: [ "/usr/sbin/dmidecode", "/usr/bin/sensors" ]

Connector Activation Criteria

The lm_sensors connector will be automatically activated, and its status will be reported as OK if all the below criteria are met, and no other connector capable of discovering temperature instances is activated:

• The device type must be one of: Linux
• The command below succeeds on the monitored host:
  • Command: /usr/bin/sensors -h
  • Output contains: Usage: sensors (regex)

Metrics

Type	Collected Metrics	Specific Attributes
enclosure	hw.status{hw.type="enclosure", state="present"}	bios_version id serial_number type vendor
fan	hw.fan.speed hw.fan.speed.limit{limit_type="low.critical"} hw.fan.speed.limit{limit_type="low.degraded"} hw.status{hw.type="fan", state="present"}	hw.parent.id hw.parent.type id name sensor_location
temperature	hw.status{hw.type="temperature", state="present"} hw.temperature hw.temperature.limit{limit_type="high.critical"} hw.temperature.limit{limit_type="high.degraded"}	hw.parent.id hw.parent.type id name
voltage	hw.status{hw.type="voltage", state="present"} hw.voltage hw.voltage.limit{limit_type="high.critical"} hw.voltage.limit{limit_type="low.critical"}	hw.parent.id hw.parent.type id name sensor_location