[k8sclusterreceiver] add k8s.container.status_last_terminated_reason metric

.chloggen/k8scluster_add-last-terminated-state.yaml

@@ -0,0 +1,27 @@
+# Use this changelog template to create an entry for release notes.
+
+# One of 'breaking', 'deprecation', 'new_component', 'enhancement', 'bug_fix'
+change_type: enhancement
+
+# The name of the component, or a single word describing the area of concern, (e.g. filelogreceiver)
+component: "k8sclusterreceiver"
+
+# A brief description of the change.  Surround your text with quotes ("") if it needs to start with a backtick (`).
+note: "add optional k8s.container.status_last_terminated_reason metric"
+
+# Mandatory: One or more tracking issues related to the change. You can use the PR number here if no issue exists.
+issues: [31282]
+
+# (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:
+
+# If your change doesn't affect end users or the exported elements of any package,
+# you should instead start your pull request title with [chore] or use the "Skip Changelog" label.
+# Optional: The change log or logs in which this entry should be included.
+# e.g. '[user]' or '[user, api]'
+# Include 'user' if the change is relevant to end users.
+# Include 'api' if there is a change to a library API.
+# Default: '[user]'
+change_logs: [user]

receiver/k8sclusterreceiver/documentation.md

@@ -396,6 +396,20 @@ metrics:
     enabled: true
 ```
 
+### k8s.container.status_last_terminated_reason
+
+Last terminated reason of container. The unit is always 1.
+
+| Unit | Metric Type | Value Type |
+| ---- | ----------- | ---------- |
+|  | Gauge | Int |
+
+#### Attributes
+
+| Name | Description | Values |
+| ---- | ----------- | ------ |
+| reason | the container status terminated reason | Any Str |
+
 ### k8s.node.condition
 
 The condition of a particular Node.

receiver/k8sclusterreceiver/internal/container/containers.go

@@ -68,6 +68,9 @@ func RecordSpecMetrics(logger *zap.Logger, mb *imetadata.MetricsBuilder, c corev
 			imageStr = cs.Image
 			mb.RecordK8sContainerRestartsDataPoint(ts, int64(cs.RestartCount))
 			mb.RecordK8sContainerReadyDataPoint(ts, boolToInt64(cs.Ready))
+			if cs.LastTerminationState.Terminated != nil {
+				mb.RecordK8sContainerStatusLastTerminatedReasonDataPoint(ts, 1, cs.LastTerminationState.Terminated.Reason)
+			}
 			break
 		}
 	}