[chore] fix pod and container metadata to include parent and units (#…

…23795)

**Description:**
Add parent information to pod and container metadata.

**Link to tracking Issue:**
Fixes #23793

receiver/k8sclusterreceiver/internal/container/documentation.md

@@ -2,6 +2,8 @@
 
 # k8s/container
 
+**Parent Component:** k8s_cluster
+
 ## Default Metrics
 
 The following metrics are emitted by default. Each of them can be disabled by applying the following configuration:
@@ -18,47 +20,47 @@ Maximum resource limit set for the container. See https://kubernetes.io/docs/ref
 
 | Unit | Metric Type | Value Type |
 | ---- | ----------- | ---------- |
-|  | Gauge | Double |
+| {cpu} | Gauge | Double |
 
 ### k8s.container.cpu_request
 
 Resource requested for the container. See https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.23/#resourcerequirements-v1-core for details
 
 | Unit | Metric Type | Value Type |
 | ---- | ----------- | ---------- |
-|  | Gauge | Double |
+| {cpu} | Gauge | Double |
 
 ### k8s.container.ephemeralstorage_limit
 
 Maximum resource limit set for the container. See https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.23/#resourcerequirements-v1-core for details
 
 | Unit | Metric Type | Value Type |
 | ---- | ----------- | ---------- |
-|  | Gauge | Int |
+| By | Gauge | Int |
 
 ### k8s.container.ephemeralstorage_request
 
 Resource requested for the container. See https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.23/#resourcerequirements-v1-core for details
 
 | Unit | Metric Type | Value Type |
 | ---- | ----------- | ---------- |
-|  | Gauge | Int |
+| By | Gauge | Int |
 
 ### k8s.container.memory_limit
 
 Maximum resource limit set for the container. See https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.23/#resourcerequirements-v1-core for details
 
 | Unit | Metric Type | Value Type |
 | ---- | ----------- | ---------- |
-|  | Gauge | Int |
+| By | Gauge | Int |
 
 ### k8s.container.memory_request
 
 Resource requested for the container. See https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.23/#resourcerequirements-v1-core for details
 
 | Unit | Metric Type | Value Type |
 | ---- | ----------- | ---------- |
-|  | Gauge | Int |
+| By | Gauge | Int |
 
 ### k8s.container.ready
 
@@ -82,15 +84,15 @@ Maximum resource limit set for the container. See https://kubernetes.io/docs/ref
 
 | Unit | Metric Type | Value Type |
 | ---- | ----------- | ---------- |
-|  | Gauge | Int |
+| By | Gauge | Int |
 
 ### k8s.container.storage_request
 
 Resource requested for the container. See https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.23/#resourcerequirements-v1-core for details
 
 | Unit | Metric Type | Value Type |
 | ---- | ----------- | ---------- |
-|  | Gauge | Int |
+| By | Gauge | Int |
 
 ## Resource Attributes
 

receiver/k8sclusterreceiver/internal/container/metadata.yaml

@@ -2,6 +2,8 @@ type: k8s/container
 
 sem_conv_version: 1.18.0
 
+parent: k8s_cluster
+
 resource_attributes:
   container.id:
     description: The container id.
@@ -52,41 +54,49 @@ metrics:
   k8s.container.cpu_request:
     enabled: true
     description: Resource requested for the container. See https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.23/#resourcerequirements-v1-core for details
+    unit: "{cpu}"
     gauge:
       value_type: double
   k8s.container.cpu_limit:
     enabled: true
     description: Maximum resource limit set for the container. See https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.23/#resourcerequirements-v1-core for details
+    unit: "{cpu}"
     gauge:
       value_type: double
   k8s.container.memory_request:
     enabled: true
     description: Resource requested for the container. See https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.23/#resourcerequirements-v1-core for details
+    unit: "By"
     gauge:
       value_type: int
   k8s.container.memory_limit:
     enabled: true
     description: Maximum resource limit set for the container. See https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.23/#resourcerequirements-v1-core for details
+    unit: "By"
     gauge:
       value_type: int
   k8s.container.storage_request:
     enabled: true
     description: Resource requested for the container. See https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.23/#resourcerequirements-v1-core for details
+    unit: "By"
     gauge:
       value_type: int
   k8s.container.storage_limit:
     enabled: true
     description: Maximum resource limit set for the container. See https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.23/#resourcerequirements-v1-core for details
+    unit: "By"
     gauge:
       value_type: int
   k8s.container.ephemeralstorage_request:
     enabled: true
     description: Resource requested for the container. See https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.23/#resourcerequirements-v1-core for details
+    unit: "By"
     gauge:
       value_type: int
   k8s.container.ephemeralstorage_limit:
     enabled: true
     description: Maximum resource limit set for the container. See https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.23/#resourcerequirements-v1-core for details
+    unit: "By"
     gauge:
       value_type: int
   k8s.container.restarts:

receiver/k8sclusterreceiver/internal/pod/documentation.md

@@ -2,6 +2,8 @@
 
 # k8s/pod
 
+**Parent Component:** k8s_cluster
+
 ## Default Metrics
 
 The following metrics are emitted by default. Each of them can be disabled by applying the following configuration:

receiver/k8sclusterreceiver/internal/pod/metadata.yaml

@@ -2,6 +2,8 @@ type: k8s/pod
 
 sem_conv_version: 1.18.0
 
+parent: k8s_cluster
+
 resource_attributes:
   k8s.namespace.name:
     description: The k8s namespace name.

receiver/k8sclusterreceiver/internal/pod/testdata/expected.yaml

@@ -77,11 +77,13 @@ resourceMetrics:
               dataPoints:
                 - asDouble: 10
             name: k8s.container.cpu_request
+            unit: "{cpu}"
           - description: Maximum resource limit set for the container. See https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.23/#resourcerequirements-v1-core for details
             gauge:
               dataPoints:
                 - asDouble: 20
             name: k8s.container.cpu_limit
+            unit: "{cpu}"
         scope:
           name: otelcol/k8sclusterreceiver
           version: latest