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NVMe devices

Plugin: go.d.plugin Module: nvme

Overview

This collector monitors the health of NVMe devices. It relies on the nvme CLI tool but avoids directly executing the binary. Instead, it utilizes ndsudo, a Netdata helper specifically designed to run privileged commands securely within the Netdata environment. This approach eliminates the need to use sudo, improving security and potentially simplifying permission management.

This collector is only supported on the following platforms:

  • Linux
  • BSD

This collector supports collecting metrics from multiple instances of this integration, including remote instances.

Default Behavior

Auto-Detection

This integration doesn't support auto-detection.

Limits

The default configuration for this integration does not impose any limits on data collection.

Performance Impact

The default configuration for this integration is not expected to impose a significant performance impact on the system.

Metrics

Metrics grouped by scope.

The scope defines the instance that the metric belongs to. An instance is uniquely identified by a set of labels.

Per device

These metrics refer to the NVME device.

Labels:

LabelDescription
deviceNVMe device name
model_numberNVMe device model

Metrics:

MetricDimensionsUnit
nvme.device_estimated_endurance_percused%
nvme.device_available_spare_percspare%
nvme.device_composite_temperaturetemperaturecelsius
nvme.device_io_transferred_countread, writtenbytes
nvme.device_power_cycles_countpowercycles
nvme.device_power_on_timepower-onseconds
nvme.device_critical_warnings_stateavailable_spare, temp_threshold, nvm_subsystem_reliability, read_only, volatile_mem_backup_failed, persistent_memory_read_onlystate
nvme.device_unsafe_shutdowns_countunsafeshutdowns
nvme.device_media_errors_ratemediaerrors/s
nvme.device_error_log_entries_rateerror_logentries/s
nvme.device_warning_composite_temperature_timewctempseconds
nvme.device_critical_composite_temperature_timecctempseconds
nvme.device_thermal_mgmt_temp1_transitions_ratetemp1transitions/s
nvme.device_thermal_mgmt_temp2_transitions_ratetemp2transitions/s
nvme.device_thermal_mgmt_temp1_timetemp1seconds
nvme.device_thermal_mgmt_temp2_timetemp2seconds

Alerts

The following alerts are available:

Alert nameOn metricDescription
nvme_device_critical_warnings_state nvme.device_critical_warnings_stateNVMe device ${label:device} has critical warnings

Setup

You can configure the nvme collector in two ways:

MethodBest forHow to
UIFast setup without editing filesGo to Nodes → Configure this node → Collectors → Jobs, search for nvme, then click + to add a job.
FileIf you prefer configuring via file, or need to automate deployments (e.g., with Ansible)Edit go.d/nvme.conf and add a job.
important

UI configuration requires paid Netdata Cloud plan.

Prerequisites

Install nvme-cli

See Distro Support. Install nvme-cli using your distribution's package manager.

For Netdata running in a Docker container: grant NVMe device access

Your NVMe devices need to be accessible within the Docker container for Netdata to monitor them.

Include the following option in your docker run command or add the device mapping in your docker-compose.yml file:

  • docker run

    --device '/dev/nvme0n1:/dev/nvme0n1'
  • docker-compose.yml

    services:
    netdata:
    devices:
    - "/dev/nvme0n1:/dev/nvme0n1"

Note: Replace /dev/nvme0n1 with your actual NVMe device name.

Configuration

Options

The following options can be defined globally: update_every, autodetection_retry.

Config options
OptionDescriptionDefaultRequired
update_everyData collection frequency.10no
autodetection_retryRecheck interval in seconds. Zero means no recheck will be scheduled.0no
timeoutnvme binary execution timeout.2no

via UI

Configure the nvme collector from the Netdata web interface:

  1. Go to Nodes.
  2. Select the node where you want the nvme data-collection job to run and click the (Configure this node). That node will run the data collection.
  3. The Collectors → Jobs view opens by default.
  4. In the Search box, type nvme (or scroll the list) to locate the nvme collector.
  5. Click the + next to the nvme collector to add a new job.
  6. Fill in the job fields, then click Test to verify the configuration and Submit to save.
    • Test runs the job with the provided settings and shows whether data can be collected.
    • If it fails, an error message appears with details (for example, connection refused, timeout, or command execution errors), so you can adjust and retest.

via File

The configuration file name for this integration is go.d/nvme.conf.

The file format is YAML. Generally, the structure is:

update_every: 1
autodetection_retry: 0
jobs:
- name: some_name1
- name: some_name2

You can edit the configuration file using the edit-config script from the Netdata config directory.

cd /etc/netdata 2>/dev/null || cd /opt/netdata/etc/netdata
sudo ./edit-config go.d/nvme.conf
Examples
Custom update_every

Allows you to override the default data collection interval.

Config
jobs:
- name: nvme
update_every: 5 # Collect NVMe metrics every 5 seconds

Troubleshooting

Debug Mode

Important: Debug mode is not supported for data collection jobs created via the UI using the Dyncfg feature.

To troubleshoot issues with the nvme collector, run the go.d.plugin with the debug option enabled. The output should give you clues as to why the collector isn't working.

  • Navigate to the plugins.d directory, usually at /usr/libexec/netdata/plugins.d/. If that's not the case on your system, open netdata.conf and look for the plugins setting under [directories].

    cd /usr/libexec/netdata/plugins.d/
  • Switch to the netdata user.

    sudo -u netdata -s
  • Run the go.d.plugin to debug the collector:

    ./go.d.plugin -d -m nvme

    To debug a specific job:

    ./go.d.plugin -d -m nvme -j jobName

Getting Logs

If you're encountering problems with the nvme collector, follow these steps to retrieve logs and identify potential issues:

  • Run the command specific to your system (systemd, non-systemd, or Docker container).
  • Examine the output for any warnings or error messages that might indicate issues. These messages should provide clues about the root cause of the problem.

System with systemd

Use the following command to view logs generated since the last Netdata service restart:

journalctl _SYSTEMD_INVOCATION_ID="$(systemctl show --value --property=InvocationID netdata)" --namespace=netdata --grep nvme

System without systemd

Locate the collector log file, typically at /var/log/netdata/collector.log, and use grep to filter for collector's name:

grep nvme /var/log/netdata/collector.log

Note: This method shows logs from all restarts. Focus on the latest entries for troubleshooting current issues.

Docker Container

If your Netdata runs in a Docker container named "netdata" (replace if different), use this command:

docker logs netdata 2>&1 | grep nvme

Do you have any feedback for this page? If so, you can open a new issue on our netdata/learn repository.