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Chrony

Plugin: go.d.plugin Module: chrony

Overview

This collector monitors the system's clock performance and peers activity status

It collects metrics by sending UDP packets to chronyd using the Chrony communication protocol v6.

This collector is supported on all platforms.

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

Default Behavior

Auto-Detection

This collector discovers Chrony instance running on the local host and listening on port 323. On startup, it tries to collect metrics from:

  • 127.0.0.1:323

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 Chrony instance

These metrics refer to the entire monitored application.

This scope has no labels.

Metrics:

MetricDimensionsUnit
chrony.stratumstratumlevel
chrony.current_correctioncurrent_correctionseconds
chrony.root_delayroot_delayseconds
chrony.root_dispersionroot_delayseconds
chrony.last_offsetoffsetseconds
chrony.rms_offsetoffsetseconds
chrony.frequencyfrequencyppm
chrony.residual_frequencyresidual_frequencyppm
chrony.skewskewppm
chrony.update_intervalupdate_intervalseconds
chrony.ref_measurement_timeref_measurement_timeseconds
chrony.leap_statusnormal, insert_second, delete_second, unsynchronisedstatus
chrony.activityonline, offline, burst_online, burst_offline, unresolvedsources

Alerts

There are no alerts configured by default for this integration.

Setup

Prerequisites

No action required.

Configuration

File

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

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/chrony.conf

Options

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

Config options
NameDescriptionDefaultRequired
update_everyData collection frequency.5no
autodetection_retryRecheck interval in seconds. Zero means no recheck will be scheduled.0no
addressServer address. The format is IP:PORT.127.0.0.1:323yes
timeoutConnection timeout. Zero means no timeout.1no

Examples

Basic

A basic example configuration.

jobs:
- name: local
address: 127.0.0.1:323

Multi-instance

Note: When you define multiple jobs, their names must be unique.

Collecting metrics from local and remote instances.

Config
jobs:
- name: local
address: 127.0.0.1:323

- name: remote
address: 192.0.2.1:323

Troubleshooting

Debug Mode

To troubleshoot issues with the chrony 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 chrony

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