mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-11-18 20:30:23 +00:00
665 lines
29 KiB
Go
665 lines
29 KiB
Go
/*
|
|
Copyright 2015 The Kubernetes Authors.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
package metrics
|
|
|
|
import (
|
|
"fmt"
|
|
"sync"
|
|
"time"
|
|
|
|
"k8s.io/component-base/metrics"
|
|
"k8s.io/component-base/metrics/legacyregistry"
|
|
|
|
corev1 "k8s.io/api/core/v1"
|
|
"k8s.io/apimachinery/pkg/types"
|
|
utilfeature "k8s.io/apiserver/pkg/util/feature"
|
|
"k8s.io/klog"
|
|
"k8s.io/kubernetes/pkg/features"
|
|
kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
|
|
)
|
|
|
|
// This const block defines the metric names for the kubelet metrics.
|
|
const (
|
|
KubeletSubsystem = "kubelet"
|
|
NodeNameKey = "node_name"
|
|
NodeLabelKey = "node"
|
|
PodWorkerDurationKey = "pod_worker_duration_seconds"
|
|
PodStartDurationKey = "pod_start_duration_seconds"
|
|
CgroupManagerOperationsKey = "cgroup_manager_duration_seconds"
|
|
PodWorkerStartDurationKey = "pod_worker_start_duration_seconds"
|
|
PLEGRelistDurationKey = "pleg_relist_duration_seconds"
|
|
PLEGDiscardEventsKey = "pleg_discard_events"
|
|
PLEGRelistIntervalKey = "pleg_relist_interval_seconds"
|
|
EvictionsKey = "evictions"
|
|
EvictionStatsAgeKey = "eviction_stats_age_seconds"
|
|
PreemptionsKey = "preemptions"
|
|
DeprecatedPodWorkerLatencyKey = "pod_worker_latency_microseconds"
|
|
DeprecatedPodStartLatencyKey = "pod_start_latency_microseconds"
|
|
DeprecatedCgroupManagerOperationsKey = "cgroup_manager_latency_microseconds"
|
|
DeprecatedPodWorkerStartLatencyKey = "pod_worker_start_latency_microseconds"
|
|
DeprecatedPLEGRelistLatencyKey = "pleg_relist_latency_microseconds"
|
|
DeprecatedPLEGRelistIntervalKey = "pleg_relist_interval_microseconds"
|
|
DeprecatedEvictionStatsAgeKey = "eviction_stats_age_microseconds"
|
|
VolumeStatsCapacityBytesKey = "volume_stats_capacity_bytes"
|
|
VolumeStatsAvailableBytesKey = "volume_stats_available_bytes"
|
|
VolumeStatsUsedBytesKey = "volume_stats_used_bytes"
|
|
VolumeStatsInodesKey = "volume_stats_inodes"
|
|
VolumeStatsInodesFreeKey = "volume_stats_inodes_free"
|
|
VolumeStatsInodesUsedKey = "volume_stats_inodes_used"
|
|
// Metrics keys of remote runtime operations
|
|
RuntimeOperationsKey = "runtime_operations_total"
|
|
RuntimeOperationsDurationKey = "runtime_operations_duration_seconds"
|
|
RuntimeOperationsErrorsKey = "runtime_operations_errors_total"
|
|
DeprecatedRuntimeOperationsKey = "runtime_operations"
|
|
DeprecatedRuntimeOperationsLatencyKey = "runtime_operations_latency_microseconds"
|
|
DeprecatedRuntimeOperationsErrorsKey = "runtime_operations_errors"
|
|
// Metrics keys of device plugin operations
|
|
DevicePluginRegistrationCountKey = "device_plugin_registration_total"
|
|
DevicePluginAllocationDurationKey = "device_plugin_alloc_duration_seconds"
|
|
DeprecatedDevicePluginRegistrationCountKey = "device_plugin_registration_count"
|
|
DeprecatedDevicePluginAllocationLatencyKey = "device_plugin_alloc_latency_microseconds"
|
|
|
|
// Metric keys for node config
|
|
AssignedConfigKey = "node_config_assigned"
|
|
ActiveConfigKey = "node_config_active"
|
|
LastKnownGoodConfigKey = "node_config_last_known_good"
|
|
ConfigErrorKey = "node_config_error"
|
|
ConfigSourceLabelKey = "node_config_source"
|
|
ConfigSourceLabelValueLocal = "local"
|
|
ConfigUIDLabelKey = "node_config_uid"
|
|
ConfigResourceVersionLabelKey = "node_config_resource_version"
|
|
KubeletConfigKeyLabelKey = "node_config_kubelet_key"
|
|
|
|
// Metrics keys for RuntimeClass
|
|
RunPodSandboxDurationKey = "run_podsandbox_duration_seconds"
|
|
RunPodSandboxErrorsKey = "run_podsandbox_errors_total"
|
|
)
|
|
|
|
var (
|
|
// NodeName is a Gauge that tracks the ode's name. The count is always 1.
|
|
NodeName = metrics.NewGaugeVec(
|
|
&metrics.GaugeOpts{
|
|
Subsystem: KubeletSubsystem,
|
|
Name: NodeNameKey,
|
|
Help: "The node's name. The count is always 1.",
|
|
StabilityLevel: metrics.ALPHA,
|
|
},
|
|
[]string{NodeLabelKey},
|
|
)
|
|
// ContainersPerPodCount is a Counter that tracks the number of containers per pod.
|
|
ContainersPerPodCount = metrics.NewHistogram(
|
|
&metrics.HistogramOpts{
|
|
Subsystem: KubeletSubsystem,
|
|
Name: "containers_per_pod_count",
|
|
Help: "The number of containers per pod.",
|
|
Buckets: metrics.DefBuckets,
|
|
StabilityLevel: metrics.ALPHA,
|
|
},
|
|
)
|
|
// PodWorkerDuration is a Histogram that tracks the duration (in seconds) in takes to sync a single pod.
|
|
// Broken down by the operation type.
|
|
PodWorkerDuration = metrics.NewHistogramVec(
|
|
&metrics.HistogramOpts{
|
|
Subsystem: KubeletSubsystem,
|
|
Name: PodWorkerDurationKey,
|
|
Help: "Duration in seconds to sync a single pod. Broken down by operation type: create, update, or sync",
|
|
Buckets: metrics.DefBuckets,
|
|
StabilityLevel: metrics.ALPHA,
|
|
},
|
|
[]string{"operation_type"},
|
|
)
|
|
// PodStartDuration is a Histogram that tracks the duration (in seconds) it takes for a single pod to go from pending to running.
|
|
PodStartDuration = metrics.NewHistogram(
|
|
&metrics.HistogramOpts{
|
|
Subsystem: KubeletSubsystem,
|
|
Name: PodStartDurationKey,
|
|
Help: "Duration in seconds for a single pod to go from pending to running.",
|
|
Buckets: metrics.DefBuckets,
|
|
StabilityLevel: metrics.ALPHA,
|
|
},
|
|
)
|
|
// CgroupManagerDuration is a Histogram that tracks the duration (in seconds) it takes for cgroup manager operations to complete.
|
|
// Broken down by method.
|
|
CgroupManagerDuration = metrics.NewHistogramVec(
|
|
&metrics.HistogramOpts{
|
|
Subsystem: KubeletSubsystem,
|
|
Name: CgroupManagerOperationsKey,
|
|
Help: "Duration in seconds for cgroup manager operations. Broken down by method.",
|
|
Buckets: metrics.DefBuckets,
|
|
StabilityLevel: metrics.ALPHA,
|
|
},
|
|
[]string{"operation_type"},
|
|
)
|
|
// PodWorkerStartDuration is a Histogram that tracks the duration (in seconds) it takes from seeing a pod to starting a worker.
|
|
PodWorkerStartDuration = metrics.NewHistogram(
|
|
&metrics.HistogramOpts{
|
|
Subsystem: KubeletSubsystem,
|
|
Name: PodWorkerStartDurationKey,
|
|
Help: "Duration in seconds from seeing a pod to starting a worker.",
|
|
Buckets: metrics.DefBuckets,
|
|
StabilityLevel: metrics.ALPHA,
|
|
},
|
|
)
|
|
// PLEGRelistDuration is a Histogram that tracks the duration (in seconds) it takes for relisting pods in the Kubelet's
|
|
// Pod Lifecycle Event Generator (PLEG).
|
|
PLEGRelistDuration = metrics.NewHistogram(
|
|
&metrics.HistogramOpts{
|
|
Subsystem: KubeletSubsystem,
|
|
Name: PLEGRelistDurationKey,
|
|
Help: "Duration in seconds for relisting pods in PLEG.",
|
|
Buckets: metrics.DefBuckets,
|
|
StabilityLevel: metrics.ALPHA,
|
|
},
|
|
)
|
|
// PLEGDiscardEvents is a Histogram that tracks the duration (in seconds) it takes for discarding events in the Kubelet's
|
|
// Pod Lifecycle Event Generator (PLEG).
|
|
PLEGDiscardEvents = metrics.NewCounterVec(
|
|
&metrics.CounterOpts{
|
|
Subsystem: KubeletSubsystem,
|
|
Name: PLEGDiscardEventsKey,
|
|
Help: "The number of discard events in PLEG.",
|
|
StabilityLevel: metrics.ALPHA,
|
|
},
|
|
[]string{},
|
|
)
|
|
// PLEGRelistInterval is a Histogram that tracks the intervals (in seconds) between relisting in the Kubelet's
|
|
// Pod Lifecycle Event Generator (PLEG).
|
|
PLEGRelistInterval = metrics.NewHistogram(
|
|
&metrics.HistogramOpts{
|
|
Subsystem: KubeletSubsystem,
|
|
Name: PLEGRelistIntervalKey,
|
|
Help: "Interval in seconds between relisting in PLEG.",
|
|
Buckets: metrics.DefBuckets,
|
|
StabilityLevel: metrics.ALPHA,
|
|
},
|
|
)
|
|
// RuntimeOperations is a Counter that tracks the cumulative number of remote runtime operations.
|
|
// Broken down by operation type.
|
|
RuntimeOperations = metrics.NewCounterVec(
|
|
&metrics.CounterOpts{
|
|
Subsystem: KubeletSubsystem,
|
|
Name: RuntimeOperationsKey,
|
|
Help: "Cumulative number of runtime operations by operation type.",
|
|
StabilityLevel: metrics.ALPHA,
|
|
},
|
|
[]string{"operation_type"},
|
|
)
|
|
// RuntimeOperationsDuration is a Histogram that tracks the duration (in seconds) for remote runtime operations to complete.
|
|
// Broken down by operation type.
|
|
RuntimeOperationsDuration = metrics.NewHistogramVec(
|
|
&metrics.HistogramOpts{
|
|
Subsystem: KubeletSubsystem,
|
|
Name: RuntimeOperationsDurationKey,
|
|
Help: "Duration in seconds of runtime operations. Broken down by operation type.",
|
|
Buckets: metrics.DefBuckets,
|
|
StabilityLevel: metrics.ALPHA,
|
|
},
|
|
[]string{"operation_type"},
|
|
)
|
|
// RuntimeOperationsErrors is a Counter that tracks the cumulative number of remote runtime operations errors.
|
|
// Broken down by operation type.
|
|
RuntimeOperationsErrors = metrics.NewCounterVec(
|
|
&metrics.CounterOpts{
|
|
Subsystem: KubeletSubsystem,
|
|
Name: RuntimeOperationsErrorsKey,
|
|
Help: "Cumulative number of runtime operation errors by operation type.",
|
|
StabilityLevel: metrics.ALPHA,
|
|
},
|
|
[]string{"operation_type"},
|
|
)
|
|
// Evictions is a Counter that tracks the cumulative number of pod evictions initiated by the kubelet.
|
|
// Broken down by eviction signal.
|
|
Evictions = metrics.NewCounterVec(
|
|
&metrics.CounterOpts{
|
|
Subsystem: KubeletSubsystem,
|
|
Name: EvictionsKey,
|
|
Help: "Cumulative number of pod evictions by eviction signal",
|
|
StabilityLevel: metrics.ALPHA,
|
|
},
|
|
[]string{"eviction_signal"},
|
|
)
|
|
// EvictionStatsAge is a Histogram that tracks the time (in seconds) between when stats are collected and when a pod is evicted
|
|
// based on those stats. Broken down by eviction signal.
|
|
EvictionStatsAge = metrics.NewHistogramVec(
|
|
&metrics.HistogramOpts{
|
|
Subsystem: KubeletSubsystem,
|
|
Name: EvictionStatsAgeKey,
|
|
Help: "Time between when stats are collected, and when pod is evicted based on those stats by eviction signal",
|
|
Buckets: metrics.DefBuckets,
|
|
StabilityLevel: metrics.ALPHA,
|
|
},
|
|
[]string{"eviction_signal"},
|
|
)
|
|
// Preemptions is a Counter that tracks the cumulative number of pod preemptions initiated by the kubelet.
|
|
// Broken down by preemption signal. A preemption is only recorded for one resource, the sum of all signals
|
|
// is the number of preemptions on the given node.
|
|
Preemptions = metrics.NewCounterVec(
|
|
&metrics.CounterOpts{
|
|
Subsystem: KubeletSubsystem,
|
|
Name: PreemptionsKey,
|
|
Help: "Cumulative number of pod preemptions by preemption resource",
|
|
StabilityLevel: metrics.ALPHA,
|
|
},
|
|
[]string{"preemption_signal"},
|
|
)
|
|
// DevicePluginRegistrationCount is a Counter that tracks the cumulative number of device plugin registrations.
|
|
// Broken down by resource name.
|
|
DevicePluginRegistrationCount = metrics.NewCounterVec(
|
|
&metrics.CounterOpts{
|
|
Subsystem: KubeletSubsystem,
|
|
Name: DevicePluginRegistrationCountKey,
|
|
Help: "Cumulative number of device plugin registrations. Broken down by resource name.",
|
|
StabilityLevel: metrics.ALPHA,
|
|
},
|
|
[]string{"resource_name"},
|
|
)
|
|
// DevicePluginAllocationDuration is a Histogram that tracks the duration (in seconds) to serve a device plugin allocation request.
|
|
// Broken down by resource name.
|
|
DevicePluginAllocationDuration = metrics.NewHistogramVec(
|
|
&metrics.HistogramOpts{
|
|
Subsystem: KubeletSubsystem,
|
|
Name: DevicePluginAllocationDurationKey,
|
|
Help: "Duration in seconds to serve a device plugin Allocation request. Broken down by resource name.",
|
|
Buckets: metrics.DefBuckets,
|
|
StabilityLevel: metrics.ALPHA,
|
|
},
|
|
[]string{"resource_name"},
|
|
)
|
|
// DeprecatedPodWorkerLatency is a Summary that tracks the latency (in microseconds) to sync a single pod.
|
|
// Broken down by operation type. This metric is deprecated.
|
|
DeprecatedPodWorkerLatency = metrics.NewSummaryVec(
|
|
&metrics.SummaryOpts{
|
|
Subsystem: KubeletSubsystem,
|
|
Name: DeprecatedPodWorkerLatencyKey,
|
|
Help: "(Deprecated) Latency in microseconds to sync a single pod. Broken down by operation type: create, update, or sync",
|
|
StabilityLevel: metrics.ALPHA,
|
|
},
|
|
[]string{"operation_type"},
|
|
)
|
|
// DeprecatedPodStartLatency is a Summary that tracks the latency (in microseconds) for a single pod to go from pending to running.
|
|
// This metric is deprecated.
|
|
DeprecatedPodStartLatency = metrics.NewSummary(
|
|
&metrics.SummaryOpts{
|
|
Subsystem: KubeletSubsystem,
|
|
Name: DeprecatedPodStartLatencyKey,
|
|
Help: "(Deprecated) Latency in microseconds for a single pod to go from pending to running.",
|
|
StabilityLevel: metrics.ALPHA,
|
|
},
|
|
)
|
|
// DeprecatedCgroupManagerLatency is a Summary that tracks the latency (in microseconds) for cgroup manager operations to complete.
|
|
// Broken down by operation type. This metric is deprecated.
|
|
DeprecatedCgroupManagerLatency = metrics.NewSummaryVec(
|
|
&metrics.SummaryOpts{
|
|
Subsystem: KubeletSubsystem,
|
|
Name: DeprecatedCgroupManagerOperationsKey,
|
|
Help: "(Deprecated) Latency in microseconds for cgroup manager operations. Broken down by method.",
|
|
StabilityLevel: metrics.ALPHA,
|
|
},
|
|
[]string{"operation_type"},
|
|
)
|
|
// DeprecatedPodWorkerStartLatency is a Summary that tracks the latency (in microseconds) from seeing a pod to starting a worker.
|
|
// This metric is deprecated.
|
|
DeprecatedPodWorkerStartLatency = metrics.NewSummary(
|
|
&metrics.SummaryOpts{
|
|
Subsystem: KubeletSubsystem,
|
|
Name: DeprecatedPodWorkerStartLatencyKey,
|
|
Help: "(Deprecated) Latency in microseconds from seeing a pod to starting a worker.",
|
|
StabilityLevel: metrics.ALPHA,
|
|
},
|
|
)
|
|
// DeprecatedPLEGRelistLatency is a Summary that tracks the latency (in microseconds) for relisting pods in PLEG.
|
|
// This metric is deprecated.
|
|
DeprecatedPLEGRelistLatency = metrics.NewSummary(
|
|
&metrics.SummaryOpts{
|
|
Subsystem: KubeletSubsystem,
|
|
Name: DeprecatedPLEGRelistLatencyKey,
|
|
Help: "(Deprecated) Latency in microseconds for relisting pods in PLEG.",
|
|
StabilityLevel: metrics.ALPHA,
|
|
},
|
|
)
|
|
// DeprecatedPLEGRelistInterval is a Summary that tracks the interval (in microseconds) between relistings in PLEG.
|
|
// This metric is deprecated.
|
|
DeprecatedPLEGRelistInterval = metrics.NewSummary(
|
|
&metrics.SummaryOpts{
|
|
Subsystem: KubeletSubsystem,
|
|
Name: DeprecatedPLEGRelistIntervalKey,
|
|
Help: "(Deprecated) Interval in microseconds between relisting in PLEG.",
|
|
StabilityLevel: metrics.ALPHA,
|
|
},
|
|
)
|
|
// DeprecatedRuntimeOperations is a Counter that tracks the cumulative number of remote runtime operations.
|
|
// Broken down by operation type. This metric is deprecated.
|
|
DeprecatedRuntimeOperations = metrics.NewCounterVec(
|
|
&metrics.CounterOpts{
|
|
Subsystem: KubeletSubsystem,
|
|
Name: DeprecatedRuntimeOperationsKey,
|
|
Help: "(Deprecated) Cumulative number of runtime operations by operation type.",
|
|
StabilityLevel: metrics.ALPHA,
|
|
},
|
|
[]string{"operation_type"},
|
|
)
|
|
// DeprecatedRuntimeOperationsLatency is a Summary that tracks the latency (in microseconds) of remote runtime operations
|
|
// to complete. Broken down by operation type. This metric is deprecated.
|
|
DeprecatedRuntimeOperationsLatency = metrics.NewSummaryVec(
|
|
&metrics.SummaryOpts{
|
|
Subsystem: KubeletSubsystem,
|
|
Name: DeprecatedRuntimeOperationsLatencyKey,
|
|
Help: "(Deprecated) Latency in microseconds of runtime operations. Broken down by operation type.",
|
|
StabilityLevel: metrics.ALPHA,
|
|
},
|
|
[]string{"operation_type"},
|
|
)
|
|
// DeprecatedRuntimeOperationsErrors is a Counter that tracks the cumulative number of remote runtime operation errors.
|
|
// Broken down by operation type. This metric is deprecated.
|
|
DeprecatedRuntimeOperationsErrors = metrics.NewCounterVec(
|
|
&metrics.CounterOpts{
|
|
Subsystem: KubeletSubsystem,
|
|
Name: DeprecatedRuntimeOperationsErrorsKey,
|
|
Help: "(Deprecated) Cumulative number of runtime operation errors by operation type.",
|
|
StabilityLevel: metrics.ALPHA,
|
|
},
|
|
[]string{"operation_type"},
|
|
)
|
|
// DeprecatedEvictionStatsAge is a Summary that tracks the time (in microseconds) between when stats are collected and when a pod
|
|
// is evicted based on those stats. Broken down by eviction signal. This metric is deprecated.
|
|
DeprecatedEvictionStatsAge = metrics.NewSummaryVec(
|
|
&metrics.SummaryOpts{
|
|
Subsystem: KubeletSubsystem,
|
|
Name: DeprecatedEvictionStatsAgeKey,
|
|
Help: "(Deprecated) Time between when stats are collected, and when pod is evicted based on those stats by eviction signal",
|
|
StabilityLevel: metrics.ALPHA,
|
|
},
|
|
[]string{"eviction_signal"},
|
|
)
|
|
// DeprecatedDevicePluginRegistrationCount is a Counter that tracks the cumulative number of device plugin registrations.
|
|
// Broken down by resource name. This metric is deprecated.
|
|
DeprecatedDevicePluginRegistrationCount = metrics.NewCounterVec(
|
|
&metrics.CounterOpts{
|
|
Subsystem: KubeletSubsystem,
|
|
Name: DeprecatedDevicePluginRegistrationCountKey,
|
|
Help: "(Deprecated) Cumulative number of device plugin registrations. Broken down by resource name.",
|
|
StabilityLevel: metrics.ALPHA,
|
|
},
|
|
[]string{"resource_name"},
|
|
)
|
|
// DeprecatedDevicePluginAllocationLatency is a Summary that tracks the latncy (in microseconds) for serving device plugin allocation requests.
|
|
// Broken down by resource name. This metric is deprecated.
|
|
DeprecatedDevicePluginAllocationLatency = metrics.NewSummaryVec(
|
|
&metrics.SummaryOpts{
|
|
Subsystem: KubeletSubsystem,
|
|
Name: DeprecatedDevicePluginAllocationLatencyKey,
|
|
Help: "(Deprecated) Latency in microseconds to serve a device plugin Allocation request. Broken down by resource name.",
|
|
StabilityLevel: metrics.ALPHA,
|
|
},
|
|
[]string{"resource_name"},
|
|
)
|
|
|
|
// Metrics for node config
|
|
|
|
// AssignedConfig is a Gauge that is set 1 if the Kubelet has a NodeConfig assigned.
|
|
AssignedConfig = metrics.NewGaugeVec(
|
|
&metrics.GaugeOpts{
|
|
Subsystem: KubeletSubsystem,
|
|
Name: AssignedConfigKey,
|
|
Help: "The node's understanding of intended config. The count is always 1.",
|
|
StabilityLevel: metrics.ALPHA,
|
|
},
|
|
[]string{ConfigSourceLabelKey, ConfigUIDLabelKey, ConfigResourceVersionLabelKey, KubeletConfigKeyLabelKey},
|
|
)
|
|
// ActiveConfig is a Gauge that is set to 1 if the Kubelet has an active NodeConfig.
|
|
ActiveConfig = metrics.NewGaugeVec(
|
|
&metrics.GaugeOpts{
|
|
Subsystem: KubeletSubsystem,
|
|
Name: ActiveConfigKey,
|
|
Help: "The config source the node is actively using. The count is always 1.",
|
|
StabilityLevel: metrics.ALPHA,
|
|
},
|
|
[]string{ConfigSourceLabelKey, ConfigUIDLabelKey, ConfigResourceVersionLabelKey, KubeletConfigKeyLabelKey},
|
|
)
|
|
// LastKnownGoodConfig is a Gauge that is set to 1 if the Kubelet has a NodeConfig it can fall back to if there
|
|
// are certain errors.
|
|
LastKnownGoodConfig = metrics.NewGaugeVec(
|
|
&metrics.GaugeOpts{
|
|
Subsystem: KubeletSubsystem,
|
|
Name: LastKnownGoodConfigKey,
|
|
Help: "The config source the node will fall back to when it encounters certain errors. The count is always 1.",
|
|
StabilityLevel: metrics.ALPHA,
|
|
},
|
|
[]string{ConfigSourceLabelKey, ConfigUIDLabelKey, ConfigResourceVersionLabelKey, KubeletConfigKeyLabelKey},
|
|
)
|
|
// ConfigError is a Gauge that is set to 1 if the node is experiencing a configuration-related error.
|
|
ConfigError = metrics.NewGauge(
|
|
&metrics.GaugeOpts{
|
|
Subsystem: KubeletSubsystem,
|
|
Name: ConfigErrorKey,
|
|
Help: "This metric is true (1) if the node is experiencing a configuration-related error, false (0) otherwise.",
|
|
StabilityLevel: metrics.ALPHA,
|
|
},
|
|
)
|
|
// RunPodSandboxDuration is a Histogram that tracks the duration (in seconds) it takes to run Pod Sandbox operations.
|
|
// Broken down by RuntimeClass.
|
|
RunPodSandboxDuration = metrics.NewHistogramVec(
|
|
&metrics.HistogramOpts{
|
|
Subsystem: KubeletSubsystem,
|
|
Name: RunPodSandboxDurationKey,
|
|
Help: "Duration in seconds of the run_podsandbox operations. Broken down by RuntimeClass.",
|
|
// Use DefBuckets for now, will customize the buckets if necessary.
|
|
Buckets: metrics.DefBuckets,
|
|
StabilityLevel: metrics.ALPHA,
|
|
},
|
|
[]string{"runtime_handler"},
|
|
)
|
|
// RunPodSandboxErrors is a Counter that tracks the cumulative number of Pod Sandbox operations errors.
|
|
// Broken down by RuntimeClass.
|
|
RunPodSandboxErrors = metrics.NewCounterVec(
|
|
&metrics.CounterOpts{
|
|
Subsystem: KubeletSubsystem,
|
|
Name: RunPodSandboxErrorsKey,
|
|
Help: "Cumulative number of the run_podsandbox operation errors by RuntimeClass.",
|
|
StabilityLevel: metrics.ALPHA,
|
|
},
|
|
[]string{"runtime_handler"},
|
|
)
|
|
|
|
// RunningPodCount is a gauge that tracks the number of Pods currently running
|
|
RunningPodCount = metrics.NewGauge(
|
|
&metrics.GaugeOpts{
|
|
Subsystem: KubeletSubsystem,
|
|
Name: "running_pod_count",
|
|
Help: "Number of pods currently running",
|
|
StabilityLevel: metrics.ALPHA,
|
|
},
|
|
)
|
|
// RunningContainerCount is a gauge that tracks the number of containers currently running
|
|
RunningContainerCount = metrics.NewGaugeVec(
|
|
&metrics.GaugeOpts{
|
|
Subsystem: KubeletSubsystem,
|
|
Name: "running_container_count",
|
|
Help: "Number of containers currently running",
|
|
StabilityLevel: metrics.ALPHA,
|
|
},
|
|
[]string{"container_state"},
|
|
)
|
|
)
|
|
|
|
var registerMetrics sync.Once
|
|
|
|
// Register registers all metrics.
|
|
func Register(containerCache kubecontainer.RuntimeCache, collectors ...metrics.StableCollector) {
|
|
// Register the metrics.
|
|
registerMetrics.Do(func() {
|
|
legacyregistry.MustRegister(NodeName)
|
|
legacyregistry.MustRegister(PodWorkerDuration)
|
|
legacyregistry.MustRegister(PodStartDuration)
|
|
legacyregistry.MustRegister(CgroupManagerDuration)
|
|
legacyregistry.MustRegister(PodWorkerStartDuration)
|
|
legacyregistry.MustRegister(ContainersPerPodCount)
|
|
legacyregistry.MustRegister(PLEGRelistDuration)
|
|
legacyregistry.MustRegister(PLEGDiscardEvents)
|
|
legacyregistry.MustRegister(PLEGRelistInterval)
|
|
legacyregistry.MustRegister(RuntimeOperations)
|
|
legacyregistry.MustRegister(RuntimeOperationsDuration)
|
|
legacyregistry.MustRegister(RuntimeOperationsErrors)
|
|
legacyregistry.MustRegister(Evictions)
|
|
legacyregistry.MustRegister(EvictionStatsAge)
|
|
legacyregistry.MustRegister(Preemptions)
|
|
legacyregistry.MustRegister(DevicePluginRegistrationCount)
|
|
legacyregistry.MustRegister(DevicePluginAllocationDuration)
|
|
legacyregistry.MustRegister(DeprecatedPodWorkerLatency)
|
|
legacyregistry.MustRegister(DeprecatedPodStartLatency)
|
|
legacyregistry.MustRegister(DeprecatedCgroupManagerLatency)
|
|
legacyregistry.MustRegister(DeprecatedPodWorkerStartLatency)
|
|
legacyregistry.MustRegister(DeprecatedPLEGRelistLatency)
|
|
legacyregistry.MustRegister(DeprecatedPLEGRelistInterval)
|
|
legacyregistry.MustRegister(DeprecatedRuntimeOperations)
|
|
legacyregistry.MustRegister(DeprecatedRuntimeOperationsLatency)
|
|
legacyregistry.MustRegister(DeprecatedRuntimeOperationsErrors)
|
|
legacyregistry.MustRegister(DeprecatedEvictionStatsAge)
|
|
legacyregistry.MustRegister(DeprecatedDevicePluginRegistrationCount)
|
|
legacyregistry.MustRegister(DeprecatedDevicePluginAllocationLatency)
|
|
legacyregistry.MustRegister(RunningContainerCount)
|
|
legacyregistry.MustRegister(RunningPodCount)
|
|
if utilfeature.DefaultFeatureGate.Enabled(features.DynamicKubeletConfig) {
|
|
legacyregistry.MustRegister(AssignedConfig)
|
|
legacyregistry.MustRegister(ActiveConfig)
|
|
legacyregistry.MustRegister(LastKnownGoodConfig)
|
|
legacyregistry.MustRegister(ConfigError)
|
|
}
|
|
for _, collector := range collectors {
|
|
legacyregistry.CustomMustRegister(collector)
|
|
}
|
|
})
|
|
}
|
|
|
|
// GetGather returns the gatherer. It used by test case outside current package.
|
|
func GetGather() metrics.Gatherer {
|
|
return legacyregistry.DefaultGatherer
|
|
}
|
|
|
|
// SinceInMicroseconds gets the time since the specified start in microseconds.
|
|
func SinceInMicroseconds(start time.Time) float64 {
|
|
return float64(time.Since(start).Nanoseconds() / time.Microsecond.Nanoseconds())
|
|
}
|
|
|
|
// SinceInSeconds gets the time since the specified start in seconds.
|
|
func SinceInSeconds(start time.Time) float64 {
|
|
return time.Since(start).Seconds()
|
|
}
|
|
|
|
const configMapAPIPathFmt = "/api/v1/namespaces/%s/configmaps/%s"
|
|
|
|
func configLabels(source *corev1.NodeConfigSource) (map[string]string, error) {
|
|
if source == nil {
|
|
return map[string]string{
|
|
// prometheus requires all of the labels that can be set on the metric
|
|
ConfigSourceLabelKey: "local",
|
|
ConfigUIDLabelKey: "",
|
|
ConfigResourceVersionLabelKey: "",
|
|
KubeletConfigKeyLabelKey: "",
|
|
}, nil
|
|
}
|
|
if source.ConfigMap != nil {
|
|
return map[string]string{
|
|
ConfigSourceLabelKey: fmt.Sprintf(configMapAPIPathFmt, source.ConfigMap.Namespace, source.ConfigMap.Name),
|
|
ConfigUIDLabelKey: string(source.ConfigMap.UID),
|
|
ConfigResourceVersionLabelKey: source.ConfigMap.ResourceVersion,
|
|
KubeletConfigKeyLabelKey: source.ConfigMap.KubeletConfigKey,
|
|
}, nil
|
|
}
|
|
return nil, fmt.Errorf("unrecognized config source type, all source subfields were nil")
|
|
}
|
|
|
|
// track labels across metric updates, so we can delete old label sets and prevent leaks
|
|
var assignedConfigLabels map[string]string
|
|
|
|
// SetAssignedConfig tracks labels according to the assigned NodeConfig. It also tracks labels
|
|
// across metric updates so old labels can be safely deleted.
|
|
func SetAssignedConfig(source *corev1.NodeConfigSource) error {
|
|
// compute the timeseries labels from the source
|
|
labels, err := configLabels(source)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
// clean up the old timeseries (WithLabelValues creates a new one for each distinct label set)
|
|
if !AssignedConfig.Delete(assignedConfigLabels) {
|
|
klog.Warningf("Failed to delete metric for labels %v. This may result in ambiguity from multiple metrics concurrently indicating different assigned configs.", assignedConfigLabels)
|
|
}
|
|
// record the new timeseries
|
|
assignedConfigLabels = labels
|
|
// expose the new timeseries with a constant count of 1
|
|
AssignedConfig.With(assignedConfigLabels).Set(1)
|
|
return nil
|
|
}
|
|
|
|
// track labels across metric updates, so we can delete old label sets and prevent leaks
|
|
var activeConfigLabels map[string]string
|
|
|
|
// SetActiveConfig tracks labels according to the NodeConfig that is currently used by the Kubelet.
|
|
// It also tracks labels across metric updates so old labels can be safely deleted.
|
|
func SetActiveConfig(source *corev1.NodeConfigSource) error {
|
|
// compute the timeseries labels from the source
|
|
labels, err := configLabels(source)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
// clean up the old timeseries (WithLabelValues creates a new one for each distinct label set)
|
|
if !ActiveConfig.Delete(activeConfigLabels) {
|
|
klog.Warningf("Failed to delete metric for labels %v. This may result in ambiguity from multiple metrics concurrently indicating different active configs.", activeConfigLabels)
|
|
}
|
|
// record the new timeseries
|
|
activeConfigLabels = labels
|
|
// expose the new timeseries with a constant count of 1
|
|
ActiveConfig.With(activeConfigLabels).Set(1)
|
|
return nil
|
|
}
|
|
|
|
// track labels across metric updates, so we can delete old label sets and prevent leaks
|
|
var lastKnownGoodConfigLabels map[string]string
|
|
|
|
// SetLastKnownGoodConfig tracks labels according to the NodeConfig that was successfully applied last.
|
|
// It also tracks labels across metric updates so old labels can be safely deleted.
|
|
func SetLastKnownGoodConfig(source *corev1.NodeConfigSource) error {
|
|
// compute the timeseries labels from the source
|
|
labels, err := configLabels(source)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
// clean up the old timeseries (WithLabelValues creates a new one for each distinct label set)
|
|
if !LastKnownGoodConfig.Delete(lastKnownGoodConfigLabels) {
|
|
klog.Warningf("Failed to delete metric for labels %v. This may result in ambiguity from multiple metrics concurrently indicating different last known good configs.", lastKnownGoodConfigLabels)
|
|
}
|
|
// record the new timeseries
|
|
lastKnownGoodConfigLabels = labels
|
|
// expose the new timeseries with a constant count of 1
|
|
LastKnownGoodConfig.With(lastKnownGoodConfigLabels).Set(1)
|
|
return nil
|
|
}
|
|
|
|
// SetConfigError sets a the ConfigError metric to 1 in case any errors were encountered.
|
|
func SetConfigError(err bool) {
|
|
if err {
|
|
ConfigError.Set(1)
|
|
} else {
|
|
ConfigError.Set(0)
|
|
}
|
|
}
|
|
|
|
// SetNodeName sets the NodeName Gauge to 1.
|
|
func SetNodeName(name types.NodeName) {
|
|
NodeName.WithLabelValues(string(name)).Set(1)
|
|
}
|