K8s

• Kubernetes Attributes
• Deprecated Kubernetes Attributes

Kubernetes Attributes

Kubernetes resource attributes.

Attributes:

Key	Stability	Value Type	Description	Example Values
k8s.cluster.name		string	The name of the cluster.	opentelemetry-cluster
k8s.cluster.uid		string	A pseudo-ID for the cluster, set to the UID of the kube-system namespace. [1]	218fc5a9-a5f1-4b54-aa05-46717d0ab26d
k8s.container.name		string	The name of the Container from Pod specification, must be unique within a Pod. Container runtime usually uses different globally unique name (container.name).	redis
k8s.container.restart_count		int	Number of times the container was restarted. This attribute can be used to identify a particular container (running or stopped) within a container spec.
k8s.container.status.last_terminated_reason		string	Last terminated reason of the Container.	Evicted; Error
k8s.container.status.reason		string	The reason for the container state. Corresponds to the reason field of the: K8s ContainerStateWaiting or K8s ContainerStateTerminated	ContainerCreating; CrashLoopBackOff; CreateContainerConfigError; ErrImagePull; ImagePullBackOff; OOMKilled; Completed; Error; ContainerCannotRun
k8s.container.status.state		string	The state of the container. K8s ContainerState	terminated; running; waiting
k8s.cronjob.annotation.<key>		string	The cronjob annotation placed on the CronJob, the <key> being the annotation name, the value being the annotation value. [2]	4; ``
k8s.cronjob.label.<key>		string	The label placed on the CronJob, the <key> being the label name, the value being the label value. [3]	weekly; ``
k8s.cronjob.name		string	The name of the CronJob.	opentelemetry
k8s.cronjob.uid		string	The UID of the CronJob.	275ecb36-5aa8-4c2a-9c47-d8bb681b9aff
k8s.daemonset.annotation.<key>		string	The annotation placed on the DaemonSet, the <key> being the annotation name, the value being the annotation value, even if the value is empty. [4]	1; ``
k8s.daemonset.label.<key>		string	The label placed on the DaemonSet, the <key> being the label name, the value being the label value, even if the value is empty. [5]	guestbook; ``
k8s.daemonset.name		string	The name of the DaemonSet.	opentelemetry
k8s.daemonset.uid		string	The UID of the DaemonSet.	275ecb36-5aa8-4c2a-9c47-d8bb681b9aff
k8s.deployment.annotation.<key>		string	The annotation placed on the Deployment, the <key> being the annotation name, the value being the annotation value, even if the value is empty. [6]	1; ``
k8s.deployment.label.<key>		string	The label placed on the Deployment, the <key> being the label name, the value being the label value, even if the value is empty. [7]	guestbook; ``
k8s.deployment.name		string	The name of the Deployment.	opentelemetry
k8s.deployment.uid		string	The UID of the Deployment.	275ecb36-5aa8-4c2a-9c47-d8bb681b9aff
k8s.hpa.metric.type		string	The type of metric source for the horizontal pod autoscaler. [8]	Resource; ContainerResource
k8s.hpa.name		string	The name of the horizontal pod autoscaler.	opentelemetry
k8s.hpa.scaletargetref.api_version		string	The API version of the target resource to scale for the HorizontalPodAutoscaler. [9]	apps/v1; autoscaling/v2
k8s.hpa.scaletargetref.kind		string	The kind of the target resource to scale for the HorizontalPodAutoscaler. [10]	Deployment; StatefulSet
k8s.hpa.scaletargetref.name		string	The name of the target resource to scale for the HorizontalPodAutoscaler. [11]	my-deployment; my-statefulset
k8s.hpa.uid		string	The UID of the horizontal pod autoscaler.	275ecb36-5aa8-4c2a-9c47-d8bb681b9aff
k8s.hugepage.size		string	The size (identifier) of the K8s huge page.	2Mi
k8s.job.annotation.<key>		string	The annotation placed on the Job, the <key> being the annotation name, the value being the annotation value, even if the value is empty. [12]	1; ``
k8s.job.label.<key>		string	The label placed on the Job, the <key> being the label name, the value being the label value, even if the value is empty. [13]	ci; ``
k8s.job.name		string	The name of the Job.	opentelemetry
k8s.job.uid		string	The UID of the Job.	275ecb36-5aa8-4c2a-9c47-d8bb681b9aff
k8s.namespace.annotation.<key>		string	The annotation placed on the Namespace, the <key> being the annotation name, the value being the annotation value, even if the value is empty. [14]	0; ``
k8s.namespace.label.<key>		string	The label placed on the Namespace, the <key> being the label name, the value being the label value, even if the value is empty. [15]	default; ``
k8s.namespace.name		string	The name of the namespace that the pod is running in.	default
k8s.namespace.phase		string	The phase of the K8s namespace. [16]	active; terminating
k8s.node.annotation.<key>		string	The annotation placed on the Node, the <key> being the annotation name, the value being the annotation value, even if the value is empty. [17]	0; ``
k8s.node.condition.status		string	The status of the condition, one of True, False, Unknown. [18]	true; false; unknown
k8s.node.condition.type		string	The condition type of a K8s Node. [19]	Ready; DiskPressure
k8s.node.label.<key>		string	The label placed on the Node, the <key> being the label name, the value being the label value, even if the value is empty. [20]	arm64; ``
k8s.node.name		string	The name of the Node.	node-1
k8s.node.uid		string	The UID of the Node.	1eb3a0c6-0477-4080-a9cb-0cb7db65c6a2
k8s.pod.annotation.<key>		string	The annotation placed on the Pod, the <key> being the annotation name, the value being the annotation value. [21]	true; x64; ``
k8s.pod.hostname		string	Specifies the hostname of the Pod. [22]	collector-gateway
k8s.pod.ip		string	IP address allocated to the Pod. [23]	172.18.0.2
k8s.pod.label.<key>		string	The label placed on the Pod, the <key> being the label name, the value being the label value. [24]	my-app; x64; ``
k8s.pod.name		string	The name of the Pod.	opentelemetry-pod-autoconf
k8s.pod.start_time		string	The start timestamp of the Pod. [25]	2025-12-04T08:41:03Z
k8s.pod.status.phase		string	The phase for the pod. Corresponds to the phase field of the: K8s PodStatus	Pending; Running
k8s.pod.status.reason		string	The reason for the pod state. Corresponds to the reason field of the: K8s PodStatus	Evicted; NodeAffinity
k8s.pod.uid		string	The UID of the Pod.	275ecb36-5aa8-4c2a-9c47-d8bb681b9aff
k8s.replicaset.annotation.<key>		string	The annotation placed on the ReplicaSet, the <key> being the annotation name, the value being the annotation value, even if the value is empty. [26]	0; ``
k8s.replicaset.label.<key>		string	The label placed on the ReplicaSet, the <key> being the label name, the value being the label value, even if the value is empty. [27]	guestbook; ``
k8s.replicaset.name		string	The name of the ReplicaSet.	opentelemetry
k8s.replicaset.uid		string	The UID of the ReplicaSet.	275ecb36-5aa8-4c2a-9c47-d8bb681b9aff
k8s.replicationcontroller.name		string	The name of the replication controller.	opentelemetry
k8s.replicationcontroller.uid		string	The UID of the replication controller.	275ecb36-5aa8-4c2a-9c47-d8bb681b9aff
k8s.resourcequota.name		string	The name of the resource quota.	opentelemetry
k8s.resourcequota.resource_name		string	The name of the K8s resource a resource quota defines. [28]	count/replicationcontrollers
k8s.resourcequota.uid		string	The UID of the resource quota.	275ecb36-5aa8-4c2a-9c47-d8bb681b9aff
k8s.service.annotation.<key>		string	The annotation placed on the Service, the <key> being the annotation name, the value being the annotation value, even if the value is empty. [29]	true; ``
k8s.service.endpoint.address_type		string	The address type of the service endpoint. [30]	IPv4; IPv6
k8s.service.endpoint.condition		string	The condition of the service endpoint. [31]	ready; serving; terminating
k8s.service.endpoint.zone		string	The zone of the service endpoint. [32]	us-east-1a; us-west-2b; zone-a; ``
k8s.service.label.<key>		string	The label placed on the Service, the <key> being the label name, the value being the label value, even if the value is empty. [33]	my-service; ``
k8s.service.name		string	The name of the Service.	my-service
k8s.service.publish_not_ready_addresses		boolean	Whether the Service publishes not-ready endpoints. [34]	true; false
k8s.service.selector.<key>		string	The selector key-value pair placed on the Service, the <key> being the selector key, the value being the selector value. [35]	my-app; v1
k8s.service.traffic_distribution		string	The traffic distribution policy for the Service. [36]	PreferSameZone; PreferSameNode
k8s.service.type		string	The type of the Kubernetes Service. [37]	ClusterIP; NodePort; LoadBalancer
k8s.service.uid		string	The UID of the Service.	275ecb36-5aa8-4c2a-9c47-d8bb681b9aff
k8s.statefulset.annotation.<key>		string	The annotation placed on the StatefulSet, the <key> being the annotation name, the value being the annotation value, even if the value is empty. [38]	1; ``
k8s.statefulset.label.<key>		string	The label placed on the StatefulSet, the <key> being the label name, the value being the label value, even if the value is empty. [39]	guestbook; ``
k8s.statefulset.name		string	The name of the StatefulSet.	opentelemetry
k8s.statefulset.uid		string	The UID of the StatefulSet.	275ecb36-5aa8-4c2a-9c47-d8bb681b9aff
k8s.storageclass.name		string	The name of K8s StorageClass object.	gold.storageclass.storage.k8s.io
k8s.volume.name		string	The name of the K8s volume.	volume0
k8s.volume.type		string	The type of the K8s volume.	emptyDir; persistentVolumeClaim

[1] k8s.cluster.uid: K8s doesn’t have support for obtaining a cluster ID. If this is ever added, we will recommend collecting the k8s.cluster.uid through the official APIs. In the meantime, we are able to use the uid of the kube-system namespace as a proxy for cluster ID. Read on for the rationale.

Every object created in a K8s cluster is assigned a distinct UID. The kube-system namespace is used by Kubernetes itself and will exist for the lifetime of the cluster. Using the uid of the kube-system namespace is a reasonable proxy for the K8s ClusterID as it will only change if the cluster is rebuilt. Furthermore, Kubernetes UIDs are UUIDs as standardized by ISO/IEC 9834-8 and ITU-T X.667. Which states:

If generated according to one of the mechanisms defined in Rec. ITU-T X.667 | ISO/IEC 9834-8, a UUID is either guaranteed to be different from all other UUIDs generated before 3603 A.D., or is extremely likely to be different (depending on the mechanism chosen).

Therefore, UIDs between clusters should be extremely unlikely to conflict.

[2] k8s.cronjob.annotation.<key>: Examples:

• An annotation retries with value 4 SHOULD be recorded as the k8s.cronjob.annotation.retries attribute with value "4".
• An annotation data with empty string value SHOULD be recorded as the k8s.cronjob.annotation.data attribute with value "".

[3] k8s.cronjob.label.<key>: Examples:

• A label type with value weekly SHOULD be recorded as the k8s.cronjob.label.type attribute with value "weekly".
• A label automated with empty string value SHOULD be recorded as the k8s.cronjob.label.automated attribute with value "".

[4] k8s.daemonset.annotation.<key>: Examples:

• A label replicas with value 1 SHOULD be recorded as the k8s.daemonset.annotation.replicas attribute with value "1".
• A label data with empty string value SHOULD be recorded as the k8s.daemonset.annotation.data attribute with value "".

[5] k8s.daemonset.label.<key>: Examples:

• A label app with value guestbook SHOULD be recorded as the k8s.daemonset.label.app attribute with value "guestbook".
• A label data with empty string value SHOULD be recorded as the k8s.daemonset.label.injected attribute with value "".

[6] k8s.deployment.annotation.<key>: Examples:

• A label replicas with value 1 SHOULD be recorded as the k8s.deployment.annotation.replicas attribute with value "1".
• A label data with empty string value SHOULD be recorded as the k8s.deployment.annotation.data attribute with value "".

[7] k8s.deployment.label.<key>: Examples:

• A label replicas with value 0 SHOULD be recorded as the k8s.deployment.label.app attribute with value "guestbook".
• A label injected with empty string value SHOULD be recorded as the k8s.deployment.label.injected attribute with value "".

[8] k8s.hpa.metric.type: This attribute reflects the type field of spec.metrics[] in the HPA.

[9] k8s.hpa.scaletargetref.api_version: This maps to the apiVersion field in the scaleTargetRef of the HPA spec.

[10] k8s.hpa.scaletargetref.kind: This maps to the kind field in the scaleTargetRef of the HPA spec.

[11] k8s.hpa.scaletargetref.name: This maps to the name field in the scaleTargetRef of the HPA spec.

[12] k8s.job.annotation.<key>: Examples:

• A label number with value 1 SHOULD be recorded as the k8s.job.annotation.number attribute with value "1".
• A label data with empty string value SHOULD be recorded as the k8s.job.annotation.data attribute with value "".

[13] k8s.job.label.<key>: Examples:

• A label jobtype with value ci SHOULD be recorded as the k8s.job.label.jobtype attribute with value "ci".
• A label data with empty string value SHOULD be recorded as the k8s.job.label.automated attribute with value "".

[14] k8s.namespace.annotation.<key>: Examples:

• A label ttl with value 0 SHOULD be recorded as the k8s.namespace.annotation.ttl attribute with value "0".
• A label data with empty string value SHOULD be recorded as the k8s.namespace.annotation.data attribute with value "".

[15] k8s.namespace.label.<key>: Examples:

• A label kubernetes.io/metadata.name with value default SHOULD be recorded as the k8s.namespace.label.kubernetes.io/metadata.name attribute with value "default".
• A label data with empty string value SHOULD be recorded as the k8s.namespace.label.data attribute with value "".

[16] k8s.namespace.phase: This attribute aligns with the phase field of the K8s NamespaceStatus

[17] k8s.node.annotation.<key>: Examples:

• An annotation node.alpha.kubernetes.io/ttl with value 0 SHOULD be recorded as the k8s.node.annotation.node.alpha.kubernetes.io/ttl attribute with value "0".
• An annotation data with empty string value SHOULD be recorded as the k8s.node.annotation.data attribute with value "".

[18] k8s.node.condition.status: This attribute aligns with the status field of the NodeCondition

[19] k8s.node.condition.type: K8s Node conditions as described by K8s documentation.

This attribute aligns with the type field of the NodeCondition

The set of possible values is not limited to those listed here. Managed Kubernetes environments, or custom controllers MAY introduce additional node condition types. When this occurs, the exact value as reported by the Kubernetes API SHOULD be used.

[20] k8s.node.label.<key>: Examples:

• A label kubernetes.io/arch with value arm64 SHOULD be recorded as the k8s.node.label.kubernetes.io/arch attribute with value "arm64".
• A label data with empty string value SHOULD be recorded as the k8s.node.label.data attribute with value "".

[21] k8s.pod.annotation.<key>: Examples:

• An annotation kubernetes.io/enforce-mountable-secrets with value true SHOULD be recorded as the k8s.pod.annotation.kubernetes.io/enforce-mountable-secrets attribute with value "true".
• An annotation mycompany.io/arch with value x64 SHOULD be recorded as the k8s.pod.annotation.mycompany.io/arch attribute with value "x64".
• An annotation data with empty string value SHOULD be recorded as the k8s.pod.annotation.data attribute with value "".

[22] k8s.pod.hostname: The K8s Pod spec has an optional hostname field, which can be used to specify a hostname. Refer to K8s docs for more information about this field.

This attribute aligns with the hostname field of the K8s PodSpec.

[23] k8s.pod.ip: This attribute aligns with the podIP field of the K8s PodStatus.

[24] k8s.pod.label.<key>: Examples:

• A label app with value my-app SHOULD be recorded as the k8s.pod.label.app attribute with value "my-app".
• A label mycompany.io/arch with value x64 SHOULD be recorded as the k8s.pod.label.mycompany.io/arch attribute with value "x64".
• A label data with empty string value SHOULD be recorded as the k8s.pod.label.data attribute with value "".

[25] k8s.pod.start_time: Date and time at which the object was acknowledged by the Kubelet. This is before the Kubelet pulled the container image(s) for the pod.

This attribute aligns with the startTime field of the K8s PodStatus, in ISO 8601 (RFC 3339 compatible) format.

[26] k8s.replicaset.annotation.<key>: Examples:

• A label replicas with value 0 SHOULD be recorded as the k8s.replicaset.annotation.replicas attribute with value "0".
• A label data with empty string value SHOULD be recorded as the k8s.replicaset.annotation.data attribute with value "".

[27] k8s.replicaset.label.<key>: Examples:

• A label app with value guestbook SHOULD be recorded as the k8s.replicaset.label.app attribute with value "guestbook".
• A label injected with empty string value SHOULD be recorded as the k8s.replicaset.label.injected attribute with value "".

[28] k8s.resourcequota.resource_name: The value for this attribute can be either the full count/<resource>[.<group>] string (e.g., count/deployments.apps, count/pods), or, for certain core Kubernetes resources, just the resource name (e.g., pods, services, configmaps). Both forms are supported by Kubernetes for object count quotas. See Kubernetes Resource Quotas documentation for more details.

[29] k8s.service.annotation.<key>: Examples:

• An annotation prometheus.io/scrape with value true SHOULD be recorded as the k8s.service.annotation.prometheus.io/scrape attribute with value "true".
• An annotation data with empty string value SHOULD be recorded as the k8s.service.annotation.data attribute with value "".

[30] k8s.service.endpoint.address_type: The network address family or type of the endpoint. This attribute aligns with the addressType field of the K8s EndpointSlice. It is used to differentiate metrics when a Service is backed by multiple address types (e.g., in dual-stack clusters).

[31] k8s.service.endpoint.condition: The current operational condition of the service endpoint. An endpoint can have multiple conditions set at once (e.g., both serving and terminating during rollout). This attribute aligns with the condition fields in the K8s EndpointSlice.

[32] k8s.service.endpoint.zone: The zone where the endpoint is located, typically corresponding to a failure domain. This attribute aligns with the zone field of endpoints in the K8s EndpointSlice. It enables zone-aware monitoring of service endpoint distribution and supports features like Topology Aware Routing.

If the zone is not populated (e.g., nodes without the topology.kubernetes.io/zone label), the attribute value will be an empty string.

[33] k8s.service.label.<key>: Examples:

• A label app with value my-service SHOULD be recorded as the k8s.service.label.app attribute with value "my-service".
• A label data with empty string value SHOULD be recorded as the k8s.service.label.data attribute with value "".

[34] k8s.service.publish_not_ready_addresses: Whether the Service is configured to publish endpoints before the pods are ready. This attribute is typically used to indicate that a Service (such as a headless Service for a StatefulSet) allows peer discovery before pods pass their readiness probes. It aligns with the publishNotReadyAddresses field of the K8s ServiceSpec.

[35] k8s.service.selector.<key>: These selectors are used to correlate with pod labels. Each selector key-value pair becomes a separate attribute.

Examples:

• A selector app=my-app SHOULD be recorded as the k8s.service.selector.app attribute with value "my-app".
• A selector version=v1 SHOULD be recorded as the k8s.service.selector.version attribute with value "v1".

[36] k8s.service.traffic_distribution: Specifies how traffic is distributed to endpoints for this Service. This attribute aligns with the trafficDistribution field of the K8s ServiceSpec. Known values include PreferSameZone (prefer endpoints in the same zone as the client) and PreferSameNode (prefer endpoints on the same node, fallback to same zone, then cluster-wide). If this field is not set on the Service, the attribute SHOULD NOT be emitted. When not set, Kubernetes distributes traffic evenly across all endpoints cluster-wide.

[37] k8s.service.type: This attribute aligns with the type field of the K8s ServiceSpec.

[38] k8s.statefulset.annotation.<key>: Examples:

• A label replicas with value 1 SHOULD be recorded as the k8s.statefulset.annotation.replicas attribute with value "1".
• A label data with empty string value SHOULD be recorded as the k8s.statefulset.annotation.data attribute with value "".

[39] k8s.statefulset.label.<key>: Examples:

• A label replicas with value 0 SHOULD be recorded as the k8s.statefulset.label.app attribute with value "guestbook".
• A label injected with empty string value SHOULD be recorded as the k8s.statefulset.label.injected attribute with value "".

k8s.container.status.reason 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
Completed	The container has completed execution.
ContainerCannotRun	The container cannot run.
ContainerCreating	The container is being created.
CrashLoopBackOff	The container is in a crash loop back off state.
CreateContainerConfigError	There was an error creating the container configuration.
ErrImagePull	There was an error pulling the container image.
Error	There was an error with the container.
ImagePullBackOff	The container image pull is in back off state.
OOMKilled	The container was killed due to out of memory.

k8s.container.status.state 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
running	The container is running.
terminated	The container has terminated.
waiting	The container is waiting.

k8s.namespace.phase 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
active	Active namespace phase as described by K8s API
terminating	Terminating namespace phase as described by K8s API

k8s.node.condition.status 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
false	condition_false
true	condition_true
unknown	condition_unknown

k8s.node.condition.type 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
DiskPressure	Pressure exists on the disk size—that is, if the disk capacity is low
MemoryPressure	Pressure exists on the node memory—that is, if the node memory is low
NetworkUnavailable	The network for the node is not correctly configured
PIDPressure	Pressure exists on the processes—that is, if there are too many processes on the node
Ready	The node is healthy and ready to accept pods

k8s.pod.status.phase 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
Failed	All containers in the pod have terminated, and at least one container has terminated in a failure (exited with a non-zero exit code or was stopped by the system).
Pending	The pod has been accepted by the system, but one or more of the containers has not been started. This includes time before being bound to a node, as well as time spent pulling images onto the host.
Running	The pod has been bound to a node and all of the containers have been started. At least one container is still running or is in the process of being restarted.
Succeeded	All containers in the pod have voluntarily terminated with a container exit code of 0, and the system is not going to restart any of these containers.
Unknown	For some reason the state of the pod could not be obtained, typically due to an error in communicating with the host of the pod.

k8s.pod.status.reason 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
Evicted	The pod is evicted.
NodeAffinity	The pod is in a status because of its node affinity
NodeLost	The reason on a pod when its state cannot be confirmed as kubelet is unresponsive on the node it is (was) running.
Shutdown	The node is shutdown
UnexpectedAdmissionError	The pod was rejected admission to the node because of an error during admission that could not be categorized.

k8s.service.endpoint.address_type 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
FQDN	FQDN address type
IPv4	IPv4 address type
IPv6	IPv6 address type

k8s.service.endpoint.condition 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
ready	The endpoint is ready to receive new connections.
serving	The endpoint is currently handling traffic.
terminating	The endpoint is in the process of shutting down.

k8s.service.type 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
ClusterIP	ClusterIP service type
ExternalName	ExternalName service type
LoadBalancer	LoadBalancer service type
NodePort	NodePort service type

k8s.volume.type 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
configMap	A configMap volume
downwardAPI	A downwardAPI volume
emptyDir	An emptyDir volume
local	A local volume
persistentVolumeClaim	A persistentVolumeClaim volume
secret	A secret volume

Deprecated Kubernetes Attributes

Describes deprecated k8s attributes.

Attributes:

Key	Stability	Value Type	Description	Example Values
k8s.pod.labels.<key>	Replaced by k8s.pod.label.	string	Deprecated, use k8s.pod.label instead.	my-app