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[k8s] Add k8s node allocatable metrics
Signed-off-by: odubajDT <[email protected]>
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‎.chloggen/add-k8s-allocatable-metrics.yaml‎

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# Use this changelog template to create an entry for release notes.
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#
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# If your change doesn't affect end users you should instead start
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# your pull request title with [chore] or use the "Skip Changelog" label.
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# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
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change_type: enhancement
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# The name of the area of concern in the attributes-registry, (e.g. http, cloud, db)
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component: k8s
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# A brief description of the change. Surround your text with quotes ("") if it needs to start with a backtick (`).
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note: Add `k8s.node.allocatable_cpu`, `k8s.node.allocatable_ephemeral_storage`, `k8s.node.allocatable_memory`, `k8s.node.allocatable_pods` metrics
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# Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
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# The values here must be integers.
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issues: [2243]
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# (Optional) One or more lines of additional information to render under the primary note.
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# These lines will be padded with 2 spaces and then inserted directly into the document.
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# Use pipe (|) for multiline entries.
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subtext:

‎docs/system/k8s-metrics.md‎

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- [Metric: `k8s.container.status.reason`](#metric-k8scontainerstatusreason)
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- [Node metrics](#node-metrics)
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- [Metric: `k8s.node.uptime`](#metric-k8snodeuptime)
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- [Metric: `k8s.node.allocatable_cpu`](#metric-k8snodeallocatable_cpu)
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- [Metric: `k8s.node.allocatable_memory`](#metric-k8snodeallocatable_memory)
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- [Metric: `k8s.node.allocatable_ephemeral_storage`](#metric-k8snodeallocatable_ephemeral_storage)
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- [Metric: `k8s.node.allocatable_pods`](#metric-k8snodeallocatable_pods)
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- [Metric: `k8s.node.cpu.time`](#metric-k8snodecputime)
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- [Metric: `k8s.node.cpu.usage`](#metric-k8snodecpuusage)
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- [Metric: `k8s.node.memory.usage`](#metric-k8snodememoryusage)
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### Metric: `k8s.node.allocatable_cpu`
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This metric is [recommended][MetricRecommended].
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<!-- semconv metric.k8s.node.allocatable_cpu -->
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| Name | Instrument Type | Unit (UCUM) | Description | Stability | Entity Associations |
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| -------- | --------------- | ----------- | -------------- | --------- | ------ |
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| `k8s.node.allocatable_cpu` | Gauge | `{cpu}` | Amount of cpu allocatable on the node | ![Development](https://img.shields.io/badge/-development-blue) | |
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### Metric: `k8s.node.allocatable_memory`
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This metric is [recommended][MetricRecommended].
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<!-- semconv metric.k8s.node.allocatable_memory -->
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| Name | Instrument Type | Unit (UCUM) | Description | Stability | Entity Associations |
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| -------- | --------------- | ----------- | -------------- | --------- | ------ |
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| `k8s.node.allocatable_memory` | Gauge | `By` | Amount of memory allocatable on the node | ![Development](https://img.shields.io/badge/-development-blue) | |
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### Metric: `k8s.node.allocatable_ephemeral_storage`
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This metric is [recommended][MetricRecommended].
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<!-- semconv metric.k8s.node.allocatable_ephemeral_storage -->
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| Name | Instrument Type | Unit (UCUM) | Description | Stability | Entity Associations |
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| -------- | --------------- | ----------- | -------------- | --------- | ------ |
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| `k8s.node.allocatable_ephemeral_storage` | Gauge | `By` | Amount of ephemeral-storage allocatable on the node | ![Development](https://img.shields.io/badge/-development-blue) | |
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### Metric: `k8s.node.allocatable_pods`
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This metric is [recommended][MetricRecommended].
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<!-- semconv metric.k8s.node.allocatable_pods -->
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| Name | Instrument Type | Unit (UCUM) | Description | Stability | Entity Associations |
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| -------- | --------------- | ----------- | -------------- | --------- | ------ |
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| `k8s.node.allocatable_pods` | Gauge | `` | Amount of pods allocatable on the node | ![Development](https://img.shields.io/badge/-development-blue) | |
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### Metric: `k8s.node.cpu.time`
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This metric is [recommended][MetricRecommended].

‎model/k8s/metrics.yaml‎

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The actual accuracy would depend on the instrumentation and operating system.
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instrument: gauge
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unit: "s"
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- id: metric.k8s.node.allocatable_cpu
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type: metric
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metric_name: k8s.node.allocatable_cpu
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stability: development
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brief: "Amount of cpu allocatable on the node"
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instrument: gauge
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unit: "{cpu}"
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- id: metric.k8s.node.allocatable_ephemeral_storage
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type: metric
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metric_name: k8s.node.allocatable_ephemeral_storage
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stability: development
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brief: "Amount of ephemeral-storage allocatable on the node"
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instrument: gauge
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unit: "By"
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- id: metric.k8s.node.allocatable_memory
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type: metric
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metric_name: k8s.node.allocatable_memory
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stability: development
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brief: "Amount of memory allocatable on the node"
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instrument: gauge
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unit: "By"
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- id: metric.k8s.node.allocatable_pods
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type: metric
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metric_name: k8s.node.allocatable_pods
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stability: development
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brief: "Amount of pods allocatable on the node"
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instrument: gauge
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unit: ""
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# k8s.node.cpu.* metrics
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- id: metric.k8s.node.cpu.time
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type: metric

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