2d7a9160a6
Fractional binary SI quantities that cannot be represented as decimal internally were incorrectly calculated.
545 lines
22 KiB
Go
545 lines
22 KiB
Go
/*
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Copyright 2020 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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// Package resources provides a metrics collector that reports the
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// resource consumption (requests and limits) of the pods in the cluster
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// as the scheduler and kubelet would interpret it.
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package resources
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import (
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"net/http"
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"net/http/httptest"
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"strings"
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"testing"
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v1 "k8s.io/api/core/v1"
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"k8s.io/apimachinery/pkg/api/resource"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/apimachinery/pkg/labels"
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corelisters "k8s.io/client-go/listers/core/v1"
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"k8s.io/component-base/metrics"
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"k8s.io/component-base/metrics/testutil"
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)
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type fakePodLister struct {
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pods []*v1.Pod
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}
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func (l *fakePodLister) List(selector labels.Selector) (ret []*v1.Pod, err error) {
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return l.pods, nil
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}
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func (l *fakePodLister) Pods(namespace string) corelisters.PodNamespaceLister {
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panic("not implemented")
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}
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func Test_podResourceCollector_Handler(t *testing.T) {
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h := Handler(&fakePodLister{pods: []*v1.Pod{
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{
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ObjectMeta: metav1.ObjectMeta{Namespace: "test", Name: "foo"},
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Spec: v1.PodSpec{
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NodeName: "node-one",
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InitContainers: []v1.Container{
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{Resources: v1.ResourceRequirements{
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Requests: v1.ResourceList{
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"cpu": resource.MustParse("2"),
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"custom": resource.MustParse("3"),
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},
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Limits: v1.ResourceList{
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"memory": resource.MustParse("1G"),
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"custom": resource.MustParse("5"),
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},
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}},
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},
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Containers: []v1.Container{
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{Resources: v1.ResourceRequirements{
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Requests: v1.ResourceList{
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"cpu": resource.MustParse("1"),
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"custom": resource.MustParse("0"),
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},
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Limits: v1.ResourceList{
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"memory": resource.MustParse("2.5Gi"),
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"custom": resource.MustParse("6"),
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},
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}},
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},
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},
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Status: v1.PodStatus{
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Conditions: []v1.PodCondition{
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{Type: v1.PodInitialized, Status: v1.ConditionTrue},
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},
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},
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},
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}})
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r := httptest.NewRecorder()
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req, err := http.NewRequest("GET", "/metrics/resources", nil)
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if err != nil {
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t.Fatal(err)
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}
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h.ServeHTTP(r, req)
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expected := `# HELP kube_pod_resource_limit [ALPHA] Resources limit for workloads on the cluster, broken down by pod. This shows the resource usage the scheduler and kubelet expect per pod for resources along with the unit for the resource if any.
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# TYPE kube_pod_resource_limit gauge
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kube_pod_resource_limit{namespace="test",node="node-one",pod="foo",priority="",resource="custom",scheduler="",unit=""} 6
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kube_pod_resource_limit{namespace="test",node="node-one",pod="foo",priority="",resource="memory",scheduler="",unit="bytes"} 2.68435456e+09
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# HELP kube_pod_resource_request [ALPHA] Resources requested by workloads on the cluster, broken down by pod. This shows the resource usage the scheduler and kubelet expect per pod for resources along with the unit for the resource if any.
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# TYPE kube_pod_resource_request gauge
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kube_pod_resource_request{namespace="test",node="node-one",pod="foo",priority="",resource="cpu",scheduler="",unit="cores"} 2
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kube_pod_resource_request{namespace="test",node="node-one",pod="foo",priority="",resource="custom",scheduler="",unit=""} 3
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`
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out := r.Body.String()
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if expected != out {
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t.Fatal(out)
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}
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}
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func Test_podResourceCollector_CollectWithStability(t *testing.T) {
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int32p := func(i int32) *int32 {
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return &i
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}
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tests := []struct {
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name string
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pods []*v1.Pod
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expected string
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}{
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{},
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{
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name: "no containers",
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pods: []*v1.Pod{
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{
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ObjectMeta: metav1.ObjectMeta{Namespace: "test", Name: "foo"},
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},
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},
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},
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{
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name: "no resources",
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pods: []*v1.Pod{
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{
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ObjectMeta: metav1.ObjectMeta{Namespace: "test", Name: "foo"},
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Spec: v1.PodSpec{
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InitContainers: []v1.Container{},
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Containers: []v1.Container{},
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},
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},
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},
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},
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{
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name: "request only",
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pods: []*v1.Pod{
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{
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ObjectMeta: metav1.ObjectMeta{Namespace: "test", Name: "foo"},
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Spec: v1.PodSpec{
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Containers: []v1.Container{
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{Resources: v1.ResourceRequirements{Requests: v1.ResourceList{"cpu": resource.MustParse("1")}}},
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},
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},
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},
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},
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expected: `
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# HELP kube_pod_resource_request [ALPHA] Resources requested by workloads on the cluster, broken down by pod. This shows the resource usage the scheduler and kubelet expect per pod for resources along with the unit for the resource if any.
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# TYPE kube_pod_resource_request gauge
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kube_pod_resource_request{namespace="test",node="",pod="foo",priority="",resource="cpu",scheduler="",unit="cores"} 1
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`,
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},
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{
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name: "limits only",
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pods: []*v1.Pod{
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{
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ObjectMeta: metav1.ObjectMeta{Namespace: "test", Name: "foo"},
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Spec: v1.PodSpec{
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Containers: []v1.Container{
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{Resources: v1.ResourceRequirements{Limits: v1.ResourceList{"cpu": resource.MustParse("1")}}},
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},
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},
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},
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},
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expected: `
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# HELP kube_pod_resource_limit [ALPHA] Resources limit for workloads on the cluster, broken down by pod. This shows the resource usage the scheduler and kubelet expect per pod for resources along with the unit for the resource if any.
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# TYPE kube_pod_resource_limit gauge
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kube_pod_resource_limit{namespace="test",node="",pod="foo",priority="",resource="cpu",scheduler="",unit="cores"} 1
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`,
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},
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{
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name: "terminal pods are excluded",
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pods: []*v1.Pod{
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{
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ObjectMeta: metav1.ObjectMeta{Namespace: "test", Name: "foo-unscheduled-succeeded"},
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Spec: v1.PodSpec{
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Containers: []v1.Container{
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{Resources: v1.ResourceRequirements{Requests: v1.ResourceList{"cpu": resource.MustParse("1")}}},
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},
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},
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// until node name is set, phase is ignored
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Status: v1.PodStatus{Phase: v1.PodSucceeded},
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},
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{
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ObjectMeta: metav1.ObjectMeta{Namespace: "test", Name: "foo-succeeded"},
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Spec: v1.PodSpec{
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NodeName: "node-one",
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Containers: []v1.Container{
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{Resources: v1.ResourceRequirements{Requests: v1.ResourceList{"cpu": resource.MustParse("1")}}},
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},
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},
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Status: v1.PodStatus{Phase: v1.PodSucceeded},
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},
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{
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ObjectMeta: metav1.ObjectMeta{Namespace: "test", Name: "foo-failed"},
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Spec: v1.PodSpec{
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NodeName: "node-one",
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Containers: []v1.Container{
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{Resources: v1.ResourceRequirements{Requests: v1.ResourceList{"cpu": resource.MustParse("1")}}},
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},
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},
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Status: v1.PodStatus{Phase: v1.PodFailed},
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},
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{
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ObjectMeta: metav1.ObjectMeta{Namespace: "test", Name: "foo-unknown"},
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Spec: v1.PodSpec{
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NodeName: "node-one",
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Containers: []v1.Container{
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{Resources: v1.ResourceRequirements{Requests: v1.ResourceList{"cpu": resource.MustParse("1")}}},
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},
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},
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Status: v1.PodStatus{Phase: v1.PodUnknown},
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},
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{
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ObjectMeta: metav1.ObjectMeta{Namespace: "test", Name: "foo-pending"},
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Spec: v1.PodSpec{
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NodeName: "node-one",
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InitContainers: []v1.Container{
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{Resources: v1.ResourceRequirements{Requests: v1.ResourceList{"cpu": resource.MustParse("1")}}},
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},
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Containers: []v1.Container{
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{Resources: v1.ResourceRequirements{Requests: v1.ResourceList{"cpu": resource.MustParse("1")}}},
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},
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},
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Status: v1.PodStatus{
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Phase: v1.PodPending,
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Conditions: []v1.PodCondition{
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{Type: "ArbitraryCondition", Status: v1.ConditionTrue},
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},
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},
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},
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},
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expected: `
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# HELP kube_pod_resource_request [ALPHA] Resources requested by workloads on the cluster, broken down by pod. This shows the resource usage the scheduler and kubelet expect per pod for resources along with the unit for the resource if any.
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# TYPE kube_pod_resource_request gauge
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kube_pod_resource_request{namespace="test",node="",pod="foo-unscheduled-succeeded",priority="",resource="cpu",scheduler="",unit="cores"} 1
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kube_pod_resource_request{namespace="test",node="node-one",pod="foo-pending",priority="",resource="cpu",scheduler="",unit="cores"} 1
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kube_pod_resource_request{namespace="test",node="node-one",pod="foo-unknown",priority="",resource="cpu",scheduler="",unit="cores"} 1
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`,
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},
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{
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name: "zero resource should be excluded",
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pods: []*v1.Pod{
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{
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ObjectMeta: metav1.ObjectMeta{Namespace: "test", Name: "foo"},
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Spec: v1.PodSpec{
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InitContainers: []v1.Container{
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{Resources: v1.ResourceRequirements{
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Requests: v1.ResourceList{
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"cpu": resource.MustParse("0"),
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"custom": resource.MustParse("0"),
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"test.com/custom-metric": resource.MustParse("0"),
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},
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Limits: v1.ResourceList{
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"cpu": resource.MustParse("0"),
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"custom": resource.MustParse("0"),
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"test.com/custom-metric": resource.MustParse("0"),
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},
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}},
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},
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Containers: []v1.Container{
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{Resources: v1.ResourceRequirements{
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Requests: v1.ResourceList{
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"cpu": resource.MustParse("0"),
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"custom": resource.MustParse("0"),
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"test.com/custom-metric": resource.MustParse("0"),
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},
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Limits: v1.ResourceList{
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"cpu": resource.MustParse("0"),
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"custom": resource.MustParse("0"),
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"test.com/custom-metric": resource.MustParse("0"),
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},
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}},
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},
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},
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},
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},
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expected: ``,
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},
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{
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name: "optional field labels",
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pods: []*v1.Pod{
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{
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ObjectMeta: metav1.ObjectMeta{Namespace: "test", Name: "foo"},
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Spec: v1.PodSpec{
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SchedulerName: "default-scheduler",
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Priority: int32p(0),
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NodeName: "node-one",
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Containers: []v1.Container{
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{Resources: v1.ResourceRequirements{Requests: v1.ResourceList{"cpu": resource.MustParse("1")}}},
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},
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},
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},
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},
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expected: `
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# HELP kube_pod_resource_request [ALPHA] Resources requested by workloads on the cluster, broken down by pod. This shows the resource usage the scheduler and kubelet expect per pod for resources along with the unit for the resource if any.
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# TYPE kube_pod_resource_request gauge
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kube_pod_resource_request{namespace="test",node="node-one",pod="foo",priority="0",resource="cpu",scheduler="default-scheduler",unit="cores"} 1
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`,
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},
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{
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name: "init containers and regular containers when initialized",
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pods: []*v1.Pod{
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{
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ObjectMeta: metav1.ObjectMeta{Namespace: "test", Name: "foo"},
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Spec: v1.PodSpec{
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NodeName: "node-one",
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InitContainers: []v1.Container{
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{Resources: v1.ResourceRequirements{
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Requests: v1.ResourceList{
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"cpu": resource.MustParse("2"),
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"custom": resource.MustParse("3"),
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},
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Limits: v1.ResourceList{
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"memory": resource.MustParse("1G"),
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"custom": resource.MustParse("5"),
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},
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}},
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},
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Containers: []v1.Container{
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{Resources: v1.ResourceRequirements{
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Requests: v1.ResourceList{
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"cpu": resource.MustParse("1"),
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"custom": resource.MustParse("0"),
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},
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Limits: v1.ResourceList{
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"memory": resource.MustParse("2G"),
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"custom": resource.MustParse("6"),
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},
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}},
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},
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},
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Status: v1.PodStatus{
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Conditions: []v1.PodCondition{
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{Type: v1.PodInitialized, Status: v1.ConditionTrue},
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},
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},
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},
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},
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expected: `
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# HELP kube_pod_resource_limit [ALPHA] Resources limit for workloads on the cluster, broken down by pod. This shows the resource usage the scheduler and kubelet expect per pod for resources along with the unit for the resource if any.
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# TYPE kube_pod_resource_limit gauge
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kube_pod_resource_limit{namespace="test",node="node-one",pod="foo",priority="",resource="custom",scheduler="",unit=""} 6
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kube_pod_resource_limit{namespace="test",node="node-one",pod="foo",priority="",resource="memory",scheduler="",unit="bytes"} 2e+09
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# HELP kube_pod_resource_request [ALPHA] Resources requested by workloads on the cluster, broken down by pod. This shows the resource usage the scheduler and kubelet expect per pod for resources along with the unit for the resource if any.
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# TYPE kube_pod_resource_request gauge
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kube_pod_resource_request{namespace="test",node="node-one",pod="foo",priority="",resource="cpu",scheduler="",unit="cores"} 2
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kube_pod_resource_request{namespace="test",node="node-one",pod="foo",priority="",resource="custom",scheduler="",unit=""} 3
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`,
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},
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{
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name: "init containers and regular containers when initializing",
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pods: []*v1.Pod{
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{
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ObjectMeta: metav1.ObjectMeta{Namespace: "test", Name: "foo"},
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Spec: v1.PodSpec{
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NodeName: "node-one",
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InitContainers: []v1.Container{
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{Resources: v1.ResourceRequirements{
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Requests: v1.ResourceList{
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"cpu": resource.MustParse("2"),
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"custom": resource.MustParse("3"),
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},
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Limits: v1.ResourceList{
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"memory": resource.MustParse("1G"),
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"custom": resource.MustParse("5"),
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},
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}},
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},
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Containers: []v1.Container{
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{Resources: v1.ResourceRequirements{
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Requests: v1.ResourceList{
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"cpu": resource.MustParse("1"),
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"custom": resource.MustParse("0"),
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},
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Limits: v1.ResourceList{
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"memory": resource.MustParse("2G"),
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"custom": resource.MustParse("6"),
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},
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}},
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},
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},
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Status: v1.PodStatus{
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Conditions: []v1.PodCondition{
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{Type: "AnotherCondition", Status: v1.ConditionUnknown},
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{Type: v1.PodInitialized, Status: v1.ConditionFalse},
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},
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},
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},
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},
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expected: `
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# HELP kube_pod_resource_limit [ALPHA] Resources limit for workloads on the cluster, broken down by pod. This shows the resource usage the scheduler and kubelet expect per pod for resources along with the unit for the resource if any.
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# TYPE kube_pod_resource_limit gauge
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kube_pod_resource_limit{namespace="test",node="node-one",pod="foo",priority="",resource="custom",scheduler="",unit=""} 6
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kube_pod_resource_limit{namespace="test",node="node-one",pod="foo",priority="",resource="memory",scheduler="",unit="bytes"} 2e+09
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# HELP kube_pod_resource_request [ALPHA] Resources requested by workloads on the cluster, broken down by pod. This shows the resource usage the scheduler and kubelet expect per pod for resources along with the unit for the resource if any.
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# TYPE kube_pod_resource_request gauge
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kube_pod_resource_request{namespace="test",node="node-one",pod="foo",priority="",resource="cpu",scheduler="",unit="cores"} 2
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kube_pod_resource_request{namespace="test",node="node-one",pod="foo",priority="",resource="custom",scheduler="",unit=""} 3
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`,
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},
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{
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name: "aggregate container requests and limits",
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pods: []*v1.Pod{
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{
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ObjectMeta: metav1.ObjectMeta{Namespace: "test", Name: "foo"},
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Spec: v1.PodSpec{
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Containers: []v1.Container{
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{Resources: v1.ResourceRequirements{
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Requests: v1.ResourceList{"cpu": resource.MustParse("1")},
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Limits: v1.ResourceList{"cpu": resource.MustParse("2")},
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}},
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{Resources: v1.ResourceRequirements{
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Requests: v1.ResourceList{"memory": resource.MustParse("1G")},
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Limits: v1.ResourceList{"memory": resource.MustParse("2G")},
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}},
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{Resources: v1.ResourceRequirements{
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Requests: v1.ResourceList{"cpu": resource.MustParse("0.5")},
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Limits: v1.ResourceList{"cpu": resource.MustParse("1.25")},
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}},
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{Resources: v1.ResourceRequirements{
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Limits: v1.ResourceList{"memory": resource.MustParse("2G")},
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}},
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},
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},
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},
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},
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expected: `
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# HELP kube_pod_resource_limit [ALPHA] Resources limit for workloads on the cluster, broken down by pod. This shows the resource usage the scheduler and kubelet expect per pod for resources along with the unit for the resource if any.
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# TYPE kube_pod_resource_limit gauge
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kube_pod_resource_limit{namespace="test",node="",pod="foo",priority="",resource="cpu",scheduler="",unit="cores"} 3.25
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kube_pod_resource_limit{namespace="test",node="",pod="foo",priority="",resource="memory",scheduler="",unit="bytes"} 4e+09
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# HELP kube_pod_resource_request [ALPHA] Resources requested by workloads on the cluster, broken down by pod. This shows the resource usage the scheduler and kubelet expect per pod for resources along with the unit for the resource if any.
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# TYPE kube_pod_resource_request gauge
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kube_pod_resource_request{namespace="test",node="",pod="foo",priority="",resource="cpu",scheduler="",unit="cores"} 1.5
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kube_pod_resource_request{namespace="test",node="",pod="foo",priority="",resource="memory",scheduler="",unit="bytes"} 1e+09
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`,
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},
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{
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name: "overhead added to requests and limits",
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|
pods: []*v1.Pod{
|
|
{
|
|
ObjectMeta: metav1.ObjectMeta{Namespace: "test", Name: "foo"},
|
|
Spec: v1.PodSpec{
|
|
Overhead: v1.ResourceList{
|
|
"cpu": resource.MustParse("0.25"),
|
|
"memory": resource.MustParse("0.75G"),
|
|
"custom": resource.MustParse("0.5"),
|
|
},
|
|
InitContainers: []v1.Container{
|
|
{Resources: v1.ResourceRequirements{
|
|
Requests: v1.ResourceList{
|
|
"cpu": resource.MustParse("2"),
|
|
"custom": resource.MustParse("3"),
|
|
},
|
|
Limits: v1.ResourceList{
|
|
"memory": resource.MustParse("1G"),
|
|
"custom": resource.MustParse("5"),
|
|
},
|
|
}},
|
|
},
|
|
Containers: []v1.Container{
|
|
{Resources: v1.ResourceRequirements{
|
|
Requests: v1.ResourceList{
|
|
"cpu": resource.MustParse("1"),
|
|
"custom": resource.MustParse("0"),
|
|
},
|
|
Limits: v1.ResourceList{
|
|
"memory": resource.MustParse("2G"),
|
|
"custom": resource.MustParse("6"),
|
|
},
|
|
}},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
expected: `
|
|
# HELP kube_pod_resource_limit [ALPHA] Resources limit for workloads on the cluster, broken down by pod. This shows the resource usage the scheduler and kubelet expect per pod for resources along with the unit for the resource if any.
|
|
# TYPE kube_pod_resource_limit gauge
|
|
kube_pod_resource_limit{namespace="test",node="",pod="foo",priority="",resource="custom",scheduler="",unit=""} 6.5
|
|
kube_pod_resource_limit{namespace="test",node="",pod="foo",priority="",resource="memory",scheduler="",unit="bytes"} 2.75e+09
|
|
# HELP kube_pod_resource_request [ALPHA] Resources requested by workloads on the cluster, broken down by pod. This shows the resource usage the scheduler and kubelet expect per pod for resources along with the unit for the resource if any.
|
|
# TYPE kube_pod_resource_request gauge
|
|
kube_pod_resource_request{namespace="test",node="",pod="foo",priority="",resource="cpu",scheduler="",unit="cores"} 2.25
|
|
kube_pod_resource_request{namespace="test",node="",pod="foo",priority="",resource="custom",scheduler="",unit=""} 3.5
|
|
kube_pod_resource_request{namespace="test",node="",pod="foo",priority="",resource="memory",scheduler="",unit="bytes"} 7.5e+08
|
|
`,
|
|
},
|
|
{
|
|
name: "units for standard resources",
|
|
pods: []*v1.Pod{
|
|
{
|
|
ObjectMeta: metav1.ObjectMeta{Namespace: "test", Name: "foo"},
|
|
Spec: v1.PodSpec{
|
|
Containers: []v1.Container{
|
|
{Resources: v1.ResourceRequirements{
|
|
Requests: v1.ResourceList{
|
|
"storage": resource.MustParse("5"),
|
|
"ephemeral-storage": resource.MustParse("6"),
|
|
},
|
|
Limits: v1.ResourceList{
|
|
"hugepages-x": resource.MustParse("1"),
|
|
"hugepages-": resource.MustParse("2"),
|
|
"attachable-volumes-aws": resource.MustParse("3"),
|
|
"attachable-volumes-": resource.MustParse("4"),
|
|
},
|
|
}},
|
|
},
|
|
},
|
|
},
|
|
},
|
|
expected: `
|
|
# HELP kube_pod_resource_limit [ALPHA] Resources limit for workloads on the cluster, broken down by pod. This shows the resource usage the scheduler and kubelet expect per pod for resources along with the unit for the resource if any.
|
|
# TYPE kube_pod_resource_limit gauge
|
|
kube_pod_resource_limit{namespace="test",node="",pod="foo",priority="",resource="attachable-volumes-",scheduler="",unit="integer"} 4
|
|
kube_pod_resource_limit{namespace="test",node="",pod="foo",priority="",resource="attachable-volumes-aws",scheduler="",unit="integer"} 3
|
|
kube_pod_resource_limit{namespace="test",node="",pod="foo",priority="",resource="hugepages-",scheduler="",unit="bytes"} 2
|
|
kube_pod_resource_limit{namespace="test",node="",pod="foo",priority="",resource="hugepages-x",scheduler="",unit="bytes"} 1
|
|
# HELP kube_pod_resource_request [ALPHA] Resources requested by workloads on the cluster, broken down by pod. This shows the resource usage the scheduler and kubelet expect per pod for resources along with the unit for the resource if any.
|
|
# TYPE kube_pod_resource_request gauge
|
|
kube_pod_resource_request{namespace="test",node="",pod="foo",priority="",resource="ephemeral-storage",scheduler="",unit="bytes"} 6
|
|
kube_pod_resource_request{namespace="test",node="",pod="foo",priority="",resource="storage",scheduler="",unit="bytes"} 5
|
|
`,
|
|
},
|
|
}
|
|
for _, tt := range tests {
|
|
t.Run(tt.name, func(t *testing.T) {
|
|
c := NewPodResourcesMetricsCollector(&fakePodLister{pods: tt.pods})
|
|
registry := metrics.NewKubeRegistry()
|
|
registry.CustomMustRegister(c)
|
|
err := testutil.GatherAndCompare(registry, strings.NewReader(tt.expected))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
})
|
|
}
|
|
}
|