14 KiB
Semantic Conventions for Kubernetes Metrics
Status: Experimental
K8s Metrics
This document describes instruments and attributes for common K8s level metrics in OpenTelemetry. These metrics are collected from technology-specific, well-defined APIs (e.g. Kubelet's API).
Metrics in k8s. instruments SHOULD be attached to a K8s Resource
and therefore inherit its attributes, like k8s.pod.name and k8s.pod.uid.
Metric: k8s.pod.uptime
This metric is recommended.
| Name | Instrument Type | Unit (UCUM) | Description | Stability |
|---|---|---|---|---|
k8s.pod.uptime |
Gauge | s |
The time the Pod has been running [1] |  |
[1]: Instrumentations SHOULD use a gauge with type double and measure uptime in seconds as a floating point number with the highest precision available.
The actual accuracy would depend on the instrumentation and operating system.
Metric: k8s.pod.cpu.time
This metric is recommended.
| Name | Instrument Type | Unit (UCUM) | Description | Stability |
|---|---|---|---|---|
k8s.pod.cpu.time |
Counter | s |
Total CPU time consumed [1] | |
[1]: Total CPU time consumed by the specific Pod on all available CPU cores
Metric: k8s.pod.cpu.usage
This metric is recommended.
| Name | Instrument Type | Unit (UCUM) | Description | Stability |
|---|---|---|---|---|
k8s.pod.cpu.usage |
Gauge | {cpu} |
Pod's CPU usage, measured in cpus. Range from 0 to the number of allocatable CPUs [1] | |
[1]: CPU usage of the specific Pod on all available CPU cores, averaged over the sample window
Metric: k8s.pod.memory.usage
This metric is recommended.
| Name | Instrument Type | Unit (UCUM) | Description | Stability |
|---|---|---|---|---|
k8s.pod.memory.usage |
Gauge | By |
Memory usage of the Pod [1] | |
[1]: Total memory usage of the Pod
Metric: k8s.pod.network.io
This metric is recommended.
| Name | Instrument Type | Unit (UCUM) | Description | Stability |
|---|---|---|---|---|
k8s.pod.network.io |
Counter | By |
Network bytes for the Pod | |
| Attribute | Type | Description | Examples | Requirement Level | Stability |
|---|---|---|---|---|---|
network.interface.name |
string | The network interface name. | lo; eth0 |
Recommended |
|
network.io.direction |
string | The network IO operation direction. | transmit |
Recommended |
|
network.io.direction has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
| Value | Description | Stability |
|---|---|---|
receive |
receive | |
transmit |
transmit | |
Metric: k8s.pod.network.errors
This metric is recommended.
| Name | Instrument Type | Unit (UCUM) | Description | Stability |
|---|---|---|---|---|
k8s.pod.network.errors |
Counter | {error} |
Pod network errors | |
| Attribute | Type | Description | Examples | Requirement Level | Stability |
|---|---|---|---|---|---|
network.interface.name |
string | The network interface name. | lo; eth0 |
Recommended |
|
network.io.direction |
string | The network IO operation direction. | transmit |
Recommended |
|
network.io.direction has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
| Value | Description | Stability |
|---|---|---|
receive |
receive | |
transmit |
transmit | |
Metric: k8s.node.uptime
This metric is recommended.
| Name | Instrument Type | Unit (UCUM) | Description | Stability |
|---|---|---|---|---|
k8s.node.uptime |
Gauge | s |
The time the Node has been running [1] | |
[1]: Instrumentations SHOULD use a gauge with type double and measure uptime in seconds as a floating point number with the highest precision available.
The actual accuracy would depend on the instrumentation and operating system.
Metric: k8s.node.cpu.time
This metric is recommended.
| Name | Instrument Type | Unit (UCUM) | Description | Stability |
|---|---|---|---|---|
k8s.node.cpu.time |
Counter | s |
Total CPU time consumed [1] | |
[1]: Total CPU time consumed by the specific Node on all available CPU cores
Metric: k8s.node.cpu.usage
This metric is recommended.
| Name | Instrument Type | Unit (UCUM) | Description | Stability |
|---|---|---|---|---|
k8s.node.cpu.usage |
Gauge | {cpu} |
Node's CPU usage, measured in cpus. Range from 0 to the number of allocatable CPUs [1] | |
[1]: CPU usage of the specific Node on all available CPU cores, averaged over the sample window
Metric: k8s.node.memory.usage
This metric is recommended.
| Name | Instrument Type | Unit (UCUM) | Description | Stability |
|---|---|---|---|---|
k8s.node.memory.usage |
Gauge | By |
Memory usage of the Node [1] | |
[1]: Total memory usage of the Node
Metric: k8s.node.network.io
This metric is recommended.
| Name | Instrument Type | Unit (UCUM) | Description | Stability |
|---|---|---|---|---|
k8s.node.network.io |
Counter | By |
Network bytes for the Node | |
| Attribute | Type | Description | Examples | Requirement Level | Stability |
|---|---|---|---|---|---|
network.interface.name |
string | The network interface name. | lo; eth0 |
Recommended |
|
network.io.direction |
string | The network IO operation direction. | transmit |
Recommended |
|
network.io.direction has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
| Value | Description | Stability |
|---|---|---|
receive |
receive | |
transmit |
transmit | |
Metric: k8s.node.network.errors
This metric is recommended.
| Name | Instrument Type | Unit (UCUM) | Description | Stability |
|---|---|---|---|---|
k8s.node.network.errors |
Counter | {error} |
Node network errors | |
| Attribute | Type | Description | Examples | Requirement Level | Stability |
|---|---|---|---|---|---|
network.interface.name |
string | The network interface name. | lo; eth0 |
Recommended |
|
network.io.direction |
string | The network IO operation direction. | transmit |
Recommended |
|
network.io.direction has the following list of well-known values. If one of them applies, then the respective value MUST be used; otherwise, a custom value MAY be used.
| Value | Description | Stability |
|---|---|---|
receive |
receive | |
transmit |
transmit | |