ob-col/receiver/chronyreceiver/documentation.md

chrony

Default Metrics

The following metrics are emitted by default. Each of them can be disabled by applying the following configuration:

metrics:
  <metric_name>:
    enabled: false

ntp.skew

This is the estimated error bound on the frequency.

Unit	Metric Type	Value Type
ppm	Gauge	Double

ntp.time.correction

The number of seconds difference between the system's clock and the reference clock

Unit	Metric Type	Value Type
seconds	Gauge	Double

Attributes

Name	Description	Values
leap.status	how the chrony is handling leap seconds	Str: normal, insert_second, delete_second, unsynchronised

ntp.time.last_offset

The estimated local offset on the last clock update

Unit	Metric Type	Value Type
seconds	Gauge	Double

Attributes

Name	Description	Values
leap.status	how the chrony is handling leap seconds	Str: normal, insert_second, delete_second, unsynchronised

Optional Metrics

The following metrics are not emitted by default. Each of them can be enabled by applying the following configuration:

metrics:
  <metric_name>:
    enabled: true

ntp.frequency.offset

The frequency is the rate by which the system s clock would be wrong if chronyd was not correcting it.

It is expressed in ppm (parts per million). For example, a value of 1 ppm would mean that when the system’s clock thinks it has advanced 1 second, it has actually advanced by 1.000001 seconds relative to true time.

Unit	Metric Type	Value Type
ppm	Gauge	Double

Attributes

Name	Description	Values
leap.status	how the chrony is handling leap seconds	Str: normal, insert_second, delete_second, unsynchronised

ntp.stratum

The number of hops away from the reference system keeping the reference time

To read further, refer to https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/system_administrators_guide/ch-configuring_ntp_using_the_chrony_suite#sect-Checking_chrony_tracking

Unit	Metric Type	Value Type
{count}	Gauge	Int

ntp.time.rms_offset

the long term average of the offset value

Unit	Metric Type	Value Type
seconds	Gauge	Double

Attributes

Name	Description	Values
leap.status	how the chrony is handling leap seconds	Str: normal, insert_second, delete_second, unsynchronised

ntp.time.root_delay

This is the total of the network path delays to the stratum-1 system from which the system is ultimately synchronised.

Unit	Metric Type	Value Type
seconds	Gauge	Double

Attributes

Name	Description	Values
leap.status	how the chrony is handling leap seconds	Str: normal, insert_second, delete_second, unsynchronised