add desired and available metrics for deployment and replicaset

Signed-off-by: ChrsMark <chrismarkou92@gmail.com>
open-telemetry · Nov 29, 2024 · b09d792 · b09d792
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diff --git a/.chloggen/add_deploy_replica_metrics.yaml b/.chloggen/add_deploy_replica_metrics.yaml
@@ -0,0 +1,22 @@
+# Use this changelog template to create an entry for release notes.
+#
+# If your change doesn't affect end users you should instead start
+# your pull request title with [chore] or use the "Skip Changelog" label.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: enhancement
+
+# The name of the area of concern in the attributes-registry, (e.g. http, cloud, db)
+component: k8s
+
+# A brief description of the change. Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: Add desired and available metrics for k8s deployment and replicaset
+
+# Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
+# The values here must be integers.
+issues: []
+
+# (Optional) One or more lines of additional information to render under the primary note.
+# These lines will be padded with 2 spaces and then inserted directly into the document.
+# Use pipe (|) for multiline entries.
+subtext:
diff --git a/docs/system/k8s-metrics.md b/docs/system/k8s-metrics.md
@@ -15,6 +15,37 @@ well-defined APIs (e.g. Kubelet's API).
 Metrics in `k8s.` instruments SHOULD be attached to a [K8s Resource](/docs/resource/k8s.md)
 and therefore inherit its attributes, like `k8s.pod.name` and `k8s.pod.uid`.
 
+<!-- Re-generate TOC with `markdown-toc --no-first-h1 -i` -->
+
+<!-- toc -->
+
+- [Pod Metrics](#pod-metrics)
+  - [Metric: `k8s.pod.uptime`](#metric-k8spoduptime)
+  - [Metric: `k8s.pod.cpu.time`](#metric-k8spodcputime)
+  - [Metric: `k8s.pod.cpu.usage`](#metric-k8spodcpuusage)
+  - [Metric: `k8s.pod.memory.usage`](#metric-k8spodmemoryusage)
+  - [Metric: `k8s.pod.network.io`](#metric-k8spodnetworkio)
+  - [Metric: `k8s.pod.network.errors`](#metric-k8spodnetworkerrors)
+- [Node Metrics](#node-metrics)
+  - [Metric: `k8s.node.uptime`](#metric-k8snodeuptime)
+  - [Metric: `k8s.node.cpu.time`](#metric-k8snodecputime)
+  - [Metric: `k8s.node.cpu.usage`](#metric-k8snodecpuusage)
+  - [Metric: `k8s.node.memory.usage`](#metric-k8snodememoryusage)
+  - [Metric: `k8s.node.network.io`](#metric-k8snodenetworkio)
+  - [Metric: `k8s.node.network.errors`](#metric-k8snodenetworkerrors)
+- [Deployment Metrics](#deployment-metrics)
+  - [Metric: `k8s.deployment.desired`](#metric-k8sdeploymentdesired)
+  - [Metric: `k8s.deployment.available`](#metric-k8sdeploymentavailable)
+- [ReplicaSet Metrics](#replicaset-metrics)
+  - [Metric: `k8s.replicaset.desired`](#metric-k8sreplicasetdesired)
+  - [Metric: `k8s.replicaset.available`](#metric-k8sreplicasetavailable)
+
+<!-- tocstop -->
+
+## Pod Metrics
+
+**Description:** Pod level metrics captured under the namespace `k8s.pod`.
+
 ### Metric: `k8s.pod.uptime`
 
 This metric is [recommended][MetricRecommended].
@@ -172,6 +203,10 @@ This metric is [recommended][MetricRecommended].
 <!-- END AUTOGENERATED TEXT -->
 <!-- endsemconv -->
 
+## Node Metrics
+
+**Description:** Node level metrics captured under the namespace `k8s.node`.
+
 ### Metric: `k8s.node.uptime`
 
 This metric is [recommended][MetricRecommended].
@@ -329,5 +364,93 @@ This metric is [recommended][MetricRecommended].
 <!-- END AUTOGENERATED TEXT -->
 <!-- endsemconv -->
 
+## Deployment Metrics
+
+**Description:** Deployment level metrics captured under the namespace `k8s.deployment`.
+
+### Metric: `k8s.deployment.desired`
+
+This metric is [recommended][MetricRecommended].
+
+<!-- semconv metric.k8s.deployment.desired -->
+<!-- NOTE: THIS TEXT IS AUTOGENERATED. DO NOT EDIT BY HAND. -->
+<!-- see templates/registry/markdown/snippet.md.j2 -->
+<!-- prettier-ignore-start -->
+<!-- markdownlint-capture -->
+<!-- markdownlint-disable -->
+
+| Name     | Instrument Type | Unit (UCUM) | Description    | Stability |
+| -------- | --------------- | ----------- | -------------- | --------- |
+| `k8s.deployment.desired` | Gauge | `{pod}` | Number of desired pods in this deployment | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+
+<!-- markdownlint-restore -->
+<!-- prettier-ignore-end -->
+<!-- END AUTOGENERATED TEXT -->
+<!-- endsemconv -->
+
+### Metric: `k8s.deployment.available`
+
+This metric is [recommended][MetricRecommended].
+
+<!-- semconv metric.k8s.deployment.available -->
+<!-- NOTE: THIS TEXT IS AUTOGENERATED. DO NOT EDIT BY HAND. -->
+<!-- see templates/registry/markdown/snippet.md.j2 -->
+<!-- prettier-ignore-start -->
+<!-- markdownlint-capture -->
+<!-- markdownlint-disable -->
+
+| Name     | Instrument Type | Unit (UCUM) | Description    | Stability |
+| -------- | --------------- | ----------- | -------------- | --------- |
+| `k8s.deployment.available` | Gauge | `{pod}` | Total number of available pods (ready for at least minReadySeconds) targeted by this deployment | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+
+<!-- markdownlint-restore -->
+<!-- prettier-ignore-end -->
+<!-- END AUTOGENERATED TEXT -->
+<!-- endsemconv -->
+
+## ReplicaSet Metrics
+
+**Description:** ReplicaSet level metrics captured under the namespace `k8s.replicaset`.
+
+### Metric: `k8s.replicaset.desired`
+
+This metric is [recommended][MetricRecommended].
+
+<!-- semconv metric.k8s.replicaset.desired -->
+<!-- NOTE: THIS TEXT IS AUTOGENERATED. DO NOT EDIT BY HAND. -->
+<!-- see templates/registry/markdown/snippet.md.j2 -->
+<!-- prettier-ignore-start -->
+<!-- markdownlint-capture -->
+<!-- markdownlint-disable -->
+
+| Name     | Instrument Type | Unit (UCUM) | Description    | Stability |
+| -------- | --------------- | ----------- | -------------- | --------- |
+| `k8s.replicaset.desired` | Gauge | `{pod}` | Number of desired pods in this replicaset | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+
+<!-- markdownlint-restore -->
+<!-- prettier-ignore-end -->
+<!-- END AUTOGENERATED TEXT -->
+<!-- endsemconv -->
+
+### Metric: `k8s.replicaset.available`
+
+This metric is [recommended][MetricRecommended].
+
+<!-- semconv metric.k8s.replicaset.available -->
+<!-- NOTE: THIS TEXT IS AUTOGENERATED. DO NOT EDIT BY HAND. -->
+<!-- see templates/registry/markdown/snippet.md.j2 -->
+<!-- prettier-ignore-start -->
+<!-- markdownlint-capture -->
+<!-- markdownlint-disable -->
+
+| Name     | Instrument Type | Unit (UCUM) | Description    | Stability |
+| -------- | --------------- | ----------- | -------------- | --------- |
+| `k8s.replicaset.available` | Gauge | `{pod}` | Total number of available pods (ready for at least minReadySeconds) targeted by this replicaset | ![Experimental](https://img.shields.io/badge/-experimental-blue) |
+
+<!-- markdownlint-restore -->
+<!-- prettier-ignore-end -->
+<!-- END AUTOGENERATED TEXT -->
+<!-- endsemconv -->
+
 [DocumentStatus]: https://opentelemetry.io/docs/specs/otel/document-status
 [MetricRecommended]: /docs/general/metric-requirement-level.md#recommended
diff --git a/model/k8s/metrics.yaml b/model/k8s/metrics.yaml
@@ -126,3 +126,35 @@ groups:
     attributes:
       - ref: network.interface.name
       - ref: network.io.direction
+
+  # k8s.deployment.* metrics
+  - id: metric.k8s.deployment.desired
+    type: metric
+    metric_name: k8s.deployment.desired
+    stability: experimental
+    brief: "Number of desired pods in this deployment"
+    instrument: gauge
+    unit: "{pod}"
+  - id: metric.k8s.deployment.available
+    type: metric
+    metric_name: k8s.deployment.available
+    stability: experimental
+    brief: "Total number of available pods (ready for at least minReadySeconds) targeted by this deployment"
+    instrument: gauge
+    unit: "{pod}"
+
+  # k8s.replicaset.* metrics
+  - id: metric.k8s.replicaset.desired
+    type: metric
+    metric_name: k8s.replicaset.desired
+    stability: experimental
+    brief: "Number of desired pods in this replicaset"
+    instrument: gauge
+    unit: "{pod}"
+  - id: metric.k8s.replicaset.available
+    type: metric
+    metric_name: k8s.replicaset.available
+    stability: experimental
+    brief: "Total number of available pods (ready for at least minReadySeconds) targeted by this replicaset"
+    instrument: gauge
+    unit: "{pod}"