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chrony Input Plugin

This plugin queries metrics from a chrony NTP server. For details on the meaning of the gathered fields please check the chronyc manual

Global configuration options

In addition to the plugin-specific configuration settings, plugins support additional global and plugin configuration settings. These settings are used to modify metrics, tags, and field or create aliases and configure ordering, etc. See the CONFIGURATION.md for more details.

Configuration

# Get standard chrony metrics.
[[inputs.chrony]]
  ## Server address of chronyd with address scheme
  ## If empty or not set, the plugin will mimic the behavior of chronyc and
  ## check "unixgram:///run/chrony/chronyd.sock", "udp://127.0.0.1:323"
  ## and "udp://[::1]:323".
  # server = ""

  ## Timeout for establishing the connection
  # timeout = "5s"

  ## Try to resolve received addresses to host-names via DNS lookups
  ## Disabled by default to avoid DNS queries especially for slow DNS servers.
  # dns_lookup = false

  ## Metrics to query named according to chronyc commands
  ## Available settings are:
  ##   activity    -- number of peers online or offline
  ##   tracking    -- information about system's clock performance
  ##   serverstats -- chronyd server statistics
  ##   sources     -- extended information about peers
  ##   sourcestats -- statistics on peers
  # metrics = ["tracking"]

  ## Socket group & permissions
  ## If the user requests collecting metrics via unix socket, then it is created
  ## with the following group and permissions.
  # socket_group = "chrony"
  # socket_perms = "0660"

Local socket permissions

To use the unix socket, telegraf must be able to talk to it. Please ensure that the telegraf user is a member of the chrony group or telegraf won't be able to use the socket!

The unix socket is needed in order to use the serverstats metrics. All other metrics can be gathered using the udp connection.

Metrics

  • chrony
    • system_time (float, seconds)
    • last_offset (float, seconds)
    • rms_offset (float, seconds)
    • frequency (float, ppm)
    • residual_freq (float, ppm)
    • skew (float, ppm)
    • root_delay (float, seconds)
    • root_dispersion (float, seconds)
    • update_interval (float, seconds)

Tags

  • All measurements have the following tags:
    • reference_id
    • stratum
    • leap_status

Example Output

chrony,leap_status=not\ synchronized,reference_id=A29FC87B,stratum=3 frequency=-16.000999450683594,last_offset=0.000012651000361074694,residual_freq=0,rms_offset=0.000025576999178156257,root_delay=0.0016550000291317701,root_dispersion=0.00330700003542006,skew=0.006000000052154064,system_time=0.000020389999917824753,update_interval=507.1999816894531 1706271167571675297