Metrics

Inspect Karpenter Metrics

Karpenter makes several metrics available in Prometheus format to allow monitoring cluster provisioning status. These metrics are available by default at karpenter.karpenter.svc.cluster.local:8000/metrics configurable via the METRICS_PORT environment variable documented here

Controller Runtime Metrics

controller_runtime_active_workers

Number of currently used workers per controller

controller_runtime_max_concurrent_reconciles

Maximum number of concurrent reconciles per controller

controller_runtime_reconcile_errors_total

Total number of reconciliation errors per controller

controller_runtime_reconcile_time_seconds

Length of time per reconciliation per controller

controller_runtime_reconcile_total

Total number of reconciliations per controller

Consistency Metrics

karpenter_consistency_errors

Number of consistency checks that have failed.

Deprovisioning Metrics

karpenter_deprovisioning_actions_performed

Number of deprovisioning actions performed. Labeled by deprovisioner.

karpenter_deprovisioning_eligible_machines

Number of machines eligible for deprovisioning by Karpenter. Labeled by deprovisioner

karpenter_deprovisioning_evaluation_duration_seconds

Duration of the deprovisioning evaluation process in seconds.

karpenter_deprovisioning_replacement_machine_initialized_seconds

Amount of time required for a replacement machine to become initialized.

Interruption Metrics

karpenter_interruption_actions_performed

Number of notification actions performed. Labeled by action

karpenter_interruption_deleted_messages

Count of messages deleted from the SQS queue.

karpenter_interruption_message_latency_time_seconds

Length of time between message creation in queue and an action taken on the message by the controller.

karpenter_interruption_received_messages

Count of messages received from the SQS queue. Broken down by message type and whether the message was actionable.

Machines Metrics

karpenter_machines_created

Number of machines created in total by Karpenter. Labeled by reason the machine was created and the owning provisioner.

karpenter_machines_initialized

Number of machines initialized in total by Karpenter. Labeled by the owning provisioner.

karpenter_machines_launched

Number of machines launched in total by Karpenter. Labeled by the owning provisioner.

karpenter_machines_registered

Number of machines registered in total by Karpenter. Labeled by the owning provisioner.

karpenter_machines_terminated

Number of machines terminated in total by Karpenter. Labeled by reason the machine was terminated.

Provisioner Metrics

karpenter_provisioner_limit

The Provisioner Limits are the limits specified on the provisioner that restrict the quantity of resources provisioned. Labeled by provisioner name and resource type.

karpenter_provisioner_scheduling_duration_seconds

Duration of scheduling process in seconds. Broken down by provisioner and error.

karpenter_provisioner_usage

The Provisioner Usage is the amount of resources that have been provisioned by a particular provisioner. Labeled by provisioner name and resource type.

karpenter_provisioner_usage_pct

The Provisioner Usage Percentage is the percentage of each resource used based on the resources provisioned and the limits that have been configured in the range [0,100]. Labeled by provisioner name and resource type.

Nodes Metrics

karpenter_nodes_allocatable

Node allocatable are the resources allocatable by nodes.

karpenter_nodes_created

Number of nodes created in total by Karpenter. Labeled by owning provisioner.

karpenter_nodes_system_overhead

Node system daemon overhead are the resources reserved for system overhead, the difference between the node’s capacity and allocatable values are reported by the status.

karpenter_nodes_terminated

Number of nodes terminated in total by Karpenter. Labeled by owning provisioner.

karpenter_nodes_termination_time_seconds

The time taken between a node’s deletion request and the removal of its finalizer

karpenter_nodes_total_daemon_limits

Node total daemon limits are the resources specified by DaemonSet pod limits.

karpenter_nodes_total_daemon_requests

Node total daemon requests are the resource requested by DaemonSet pods bound to nodes.

karpenter_nodes_total_pod_limits

Node total pod limits are the resources specified by non-DaemonSet pod limits.

karpenter_nodes_total_pod_requests

Node total pod requests are the resources requested by non-DaemonSet pods bound to nodes.

Pods Metrics

karpenter_pods_startup_time_seconds

The time from pod creation until the pod is running.

karpenter_pods_state

Pod state is the current state of pods. This metric can be used several ways as it is labeled by the pod name, namespace, owner, node, provisioner name, zone, architecture, capacity type, instance type and pod phase.

Cloudprovider Metrics

karpenter_cloudprovider_duration_seconds

Duration of cloud provider method calls. Labeled by the controller, method name and provider.

karpenter_cloudprovider_errors_total

Total number of errors returned from CloudProvider calls.

karpenter_cloudprovider_instance_type_cpu_cores

VCPUs cores for a given instance type.

karpenter_cloudprovider_instance_type_memory_bytes

Memory, in bytes, for a given instance type.

karpenter_cloudprovider_instance_type_price_estimate

Estimated hourly price used when making informed decisions on node cost calculation. This is updated once on startup and then every 12 hours.

Cloudprovider Batcher Metrics

karpenter_cloudprovider_batcher_batch_size

Size of the request batch per batcher

karpenter_cloudprovider_batcher_batch_time_seconds

Duration of the batching window per batcher