Node Readiness Controller exposes Prometheus-compatible metrics. This page describes the Prometheus metrics exposed by Node Readiness Controller for monitoring rule evaluation, taint operations, failures, and bootstrap progress.
The controller serves metrics on /metrics only when metrics are explicitly enabled. Depending on the installation, the endpoint is served either over HTTP or over HTTPS. See Installation for deployment details.
Number of NodeReadinessRule objects tracked by the controller.
Property Value
Type gaugeLabels none Recorded when The controller refreshes or removes a tracked rule
Total number of taint operations performed by the controller.
Property Value
Type counterLabels rule, operationRecorded when The controller successfully adds or removes a taint
Label Description Values
ruleNodeReadinessRule nameAny rule name operationTaint operation performed by the controller add, remove
Duration of rule evaluations.
Property Value
Type histogramLabels none Buckets Prometheus default histogram buckets Recorded when The controller evaluates a rule against a node
Total number of failure events recorded by the controller.
Property Value
Type counterLabels rule, reasonRecorded when The controller records an evaluation failure or taint add/remove failure
Label Description Values
ruleNodeReadinessRule nameAny rule name reasonFailure label recorded by the controller EvaluationError, AddTaintError, RemoveTaintError
Total number of nodes that have completed bootstrap.
Property Value
Type counterLabels ruleRecorded when The controller marks bootstrap as completed for a node under a bootstrap-only rule
Label Description Values
ruleNodeReadinessRule nameAny rule name