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Add requests to nodes (#2078)

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* add requests and limits to nodes

* add requests and limits to nodes
This commit is contained in:
zryfish
2020-05-15 17:31:38 +08:00
committed by GitHub
parent 044dd8eba3
commit d2600705c6
8 changed files with 662 additions and 1 deletions
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1
go.mod
View File

@@ -98,6 +98,7 @@ require (
k8s.io/gengo v0.0.0-20191120174120-e74f70b9b27e // indirect
k8s.io/klog v1.0.0
k8s.io/kube-openapi v0.0.0-20191107075043-30be4d16710a
k8s.io/kubectl v0.17.3
kubesphere.io/im v0.1.0 // indirect
openpitrix.io/iam v0.1.0 // indirect
openpitrix.io/openpitrix v0.4.1-0.20190920134345-4d2be6e4965c

11
pkg/kapis/resources/v1alpha3/register.go
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@@ -32,6 +32,7 @@ import (
const (
GroupName = "resources.kubesphere.io"
tagClusteredResource = "Clustered Resource"
tagComponentStatus = "Component Status"
tagNamespacedResource = "Namespaced Resource"
@@ -47,7 +48,7 @@ func AddToContainer(c *restful.Container, informerFactory informers.InformerFact
webservice.Route(webservice.GET("/{resources}").
To(handler.handleListResources).
Metadata(restfulspec.KeyOpenAPITags, []string{tagNamespacedResource}).
Metadata(restfulspec.KeyOpenAPITags, []string{tagClusteredResource}).
Doc("Cluster level resources").
Param(webservice.PathParameter("resources", "cluster level resource type, e.g. pods,jobs,configmaps,services.")).
Param(webservice.QueryParameter(query.ParameterName, "name used to do filtering").Required(false)).
@@ -57,6 +58,14 @@ func AddToContainer(c *restful.Container, informerFactory informers.InformerFact
Param(webservice.QueryParameter(query.ParameterOrderBy, "sort parameters, e.g. orderBy=createTime")).
Returns(http.StatusOK, ok, api.ListResult{}))
webservice.Route(webservice.GET("/{resources}/{name}").
To(handler.handleGetResources).
Metadata(restfulspec.KeyOpenAPITags, []string{tagClusteredResource}).
Doc("Cluster level resource").
Param(webservice.PathParameter("resources", "cluster level resource type, e.g. pods,jobs,configmaps,services.")).
Param(webservice.PathParameter("name", "the name of the clustered resources")).
Returns(http.StatusOK, api.StatusOK, nil))
webservice.Route(webservice.GET("/namespaces/{namespace}/{resources}").
To(handler.handleListResources).
Metadata(restfulspec.KeyOpenAPITags, []string{tagNamespacedResource}).

164
pkg/models/resources/v1alpha3/node/nodes.go Normal file
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@@ -0,0 +1,164 @@
package node
import (
"fmt"
v1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/resource"
"k8s.io/apimachinery/pkg/labels"
"k8s.io/apimachinery/pkg/runtime"
"k8s.io/client-go/informers"
resourceheper "k8s.io/kubectl/pkg/util/resource"
"kubesphere.io/kubesphere/pkg/api"
clusterv1alpha1 "kubesphere.io/kubesphere/pkg/apis/cluster/v1alpha1"
"kubesphere.io/kubesphere/pkg/apiserver/query"
"kubesphere.io/kubesphere/pkg/models/resources/v1alpha3"
)
// Those annotations were added to node only for display purposes
const (
nodeCPURequests = "node.kubesphere.io/cpu-requests"
nodeMemoryRequests = "node.kubesphere.io/memory-requests"
nodeCPULimits = "node.kubesphere.io/cpu-limits"
nodeMemoryLimits = "node.kubesphere.io/memory-limits"
nodeCPURequestsFraction = "node.kubesphere.io/cpu-requests-fraction"
nodeCPULimitsFraction = "node.kubesphere.io/cpu-limits-fraction"
nodeMemoryRequestsFraction = "node.kubesphere.io/memory-requests-fraction"
nodeMemoryLimitsFraction = "node.kubesphere.io/memory-limits-fraction"
)
type nodesGetter struct {
informers informers.SharedInformerFactory
}
func New(informers informers.SharedInformerFactory) v1alpha3.Interface {
return &nodesGetter{
informers: informers,
}
}
func (c nodesGetter) Get(_, name string) (runtime.Object, error) {
node, err := c.informers.Core().V1().Nodes().Lister().Get(name)
if err != nil {
return nil, err
}
// ignore the error, skip annotating process if error happened
pods, _ := c.informers.Core().V1().Pods().Lister().Pods("").List(labels.Everything())
c.annotateNode(node, pods)
return node, nil
}
func (c nodesGetter) List(_ string, query *query.Query) (*api.ListResult, error) {
nodes, err := c.informers.Core().V1().Nodes().Lister().List(query.Selector())
if err != nil {
return nil, err
}
// ignore the error, skip annotating process if error happened
pods, _ := c.informers.Core().V1().Pods().Lister().Pods("").List(labels.Everything())
var nonTerminatedPodsList []*v1.Pod
for _, pod := range pods {
if pod.Status.Phase != v1.PodSucceeded && pod.Status.Phase != v1.PodFailed {
nonTerminatedPodsList = append(nonTerminatedPodsList, pod)
}
}
var result []runtime.Object
for _, node := range nodes {
c.annotateNode(node, nonTerminatedPodsList)
result = append(result, node)
}
return v1alpha3.DefaultList(result, query, c.compare, c.filter), nil
}
func (c nodesGetter) compare(left runtime.Object, right runtime.Object, field query.Field) bool {
leftNode, ok := left.(*v1.Node)
if !ok {
return false
}
rightNode, ok := right.(*v1.Node)
if !ok {
return false
}
return v1alpha3.DefaultObjectMetaCompare(leftNode.ObjectMeta, rightNode.ObjectMeta, field)
}
func (c nodesGetter) filter(object runtime.Object, filter query.Filter) bool {
cluster, ok := object.(*clusterv1alpha1.Cluster)
if !ok {
return false
}
return v1alpha3.DefaultObjectMetaFilter(cluster.ObjectMeta, filter)
}
// annotateNode adds cpu/memory requests usage data to node's annotations
func (c nodesGetter) annotateNode(node *v1.Node, pods []*v1.Pod) {
if len(pods) == 0 {
return
}
var nodePods []*v1.Pod
for _, pod := range pods {
if pod.Spec.NodeName == node.Name {
nodePods = append(nodePods, pod)
}
}
reqs, limits := c.getPodsTotalRequestAndLimits(nodePods)
if node.Annotations == nil {
node.Annotations = make(map[string]string)
}
cpuReqs, cpuLimits, memoryReqs, memoryLimits := reqs[v1.ResourceCPU], limits[v1.ResourceCPU], reqs[v1.ResourceMemory], limits[v1.ResourceMemory]
node.Annotations[nodeCPURequests] = cpuReqs.String()
node.Annotations[nodeCPULimits] = cpuLimits.String()
node.Annotations[nodeMemoryRequests] = memoryReqs.String()
node.Annotations[nodeMemoryLimits] = memoryLimits.String()
fractionCpuReqs, fractionCpuLimits := float64(0), float64(0)
allocatable := node.Status.Allocatable
if allocatable.Cpu().MilliValue() != 0 {
fractionCpuReqs = float64(cpuReqs.MilliValue()) / float64(allocatable.Cpu().MilliValue()) * 100
fractionCpuLimits = float64(cpuLimits.MilliValue()) / float64(allocatable.Cpu().MilliValue()) * 100
}
fractionMemoryReqs, fractionMemoryLimits := float64(0), float64(0)
if allocatable.Memory().Value() != 0 {
fractionMemoryReqs = float64(memoryReqs.Value()) / float64(allocatable.Memory().Value()) * 100
fractionMemoryLimits = float64(memoryLimits.Value()) / float64(allocatable.Memory().Value()) * 100
}
node.Annotations[nodeCPURequestsFraction] = fmt.Sprintf("%d%%", int(fractionCpuReqs))
node.Annotations[nodeCPULimitsFraction] = fmt.Sprintf("%d%%", int(fractionCpuLimits))
node.Annotations[nodeMemoryRequestsFraction] = fmt.Sprintf("%d%%", int(fractionMemoryReqs))
node.Annotations[nodeMemoryLimitsFraction] = fmt.Sprintf("%d%%", int(fractionMemoryLimits))
}
func (c nodesGetter) getPodsTotalRequestAndLimits(pods []*v1.Pod) (reqs map[v1.ResourceName]resource.Quantity, limits map[v1.ResourceName]resource.Quantity) {
reqs, limits = map[v1.ResourceName]resource.Quantity{}, map[v1.ResourceName]resource.Quantity{}
for _, pod := range pods {
podReqs, podLimits := resourceheper.PodRequestsAndLimits(pod)
for podReqName, podReqValue := range podReqs {
if value, ok := reqs[podReqName]; !ok {
reqs[podReqName] = podReqValue.DeepCopy()
} else {
value.Add(podReqValue)
reqs[podReqName] = value
}
}
for podLimitName, podLimitValue := range podLimits {
if value, ok := limits[podLimitName]; !ok {
limits[podLimitName] = podLimitValue.DeepCopy()
} else {
value.Add(podLimitValue)
limits[podLimitName] = value
}
}
}
return
}

130
pkg/models/resources/v1alpha3/node/nodes_test.go Normal file
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@@ -0,0 +1,130 @@
package node
import (
"github.com/google/go-cmp/cmp"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/resource"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/client-go/informers"
"k8s.io/client-go/kubernetes/fake"
"testing"
)
// mergeResourceLists will merge resoure lists. When two lists have the same resourece, the value from
// the last list will be present in the result
func mergeResourceLists(resourceLists ...corev1.ResourceList) corev1.ResourceList {
result := corev1.ResourceList{}
for _, rl := range resourceLists {
for resource, quantity := range rl {
result[resource] = quantity
}
}
return result
}
func getResourceList(cpu, memory string) corev1.ResourceList {
res := corev1.ResourceList{}
if cpu != "" {
res[corev1.ResourceCPU] = resource.MustParse(cpu)
}
if memory != "" {
res[corev1.ResourceMemory] = resource.MustParse(memory)
}
return res
}
var nodeAllocatable = mergeResourceLists(getResourceList("4", "12Gi"))
var node = &corev1.Node{
ObjectMeta: metav1.ObjectMeta{
Name: "foo",
},
Status: corev1.NodeStatus{
Allocatable: nodeAllocatable,
},
}
var pods = []*corev1.Pod{
&corev1.Pod{
ObjectMeta: metav1.ObjectMeta{
Namespace: "foo",
Name: "pod-with-resources",
},
TypeMeta: metav1.TypeMeta{
Kind: "Pod",
},
Spec: corev1.PodSpec{
NodeName: node.Name,
Containers: []corev1.Container{
{
Name: "cpu-mem",
Image: "image:latest",
Resources: corev1.ResourceRequirements{
Requests: getResourceList("1", "1Gi"),
Limits: getResourceList("2", "2Gi"),
},
},
},
},
Status: corev1.PodStatus{
Phase: corev1.PodRunning,
},
},
&corev1.Pod{
ObjectMeta: metav1.ObjectMeta{
Namespace: "foo2",
Name: "pod-with-resources",
},
TypeMeta: metav1.TypeMeta{
Kind: "Pod",
},
Spec: corev1.PodSpec{
NodeName: node.Name,
Containers: []corev1.Container{
{
Name: "cpu-mem",
Image: "image:latest",
Resources: corev1.ResourceRequirements{
Requests: getResourceList("1", "1Gi"),
Limits: getResourceList("2", "2Gi"),
},
},
},
},
Status: corev1.PodStatus{
Phase: corev1.PodRunning,
},
},
}
var expectedAnnotations = map[string]string{
nodeCPURequests: "2",
nodeCPULimits: "4",
nodeCPURequestsFraction: "50%",
nodeCPULimitsFraction: "100%",
nodeMemoryRequests: "2Gi",
nodeMemoryLimits: "4Gi",
nodeMemoryRequestsFraction: "16%",
nodeMemoryLimitsFraction: "33%",
}
func TestNodesGetterGet(t *testing.T) {
fake := fake.NewSimpleClientset(node, pods[0], pods[1])
informer := informers.NewSharedInformerFactory(fake, 0)
informer.Core().V1().Nodes().Informer().GetIndexer().Add(node)
for _, pod := range pods {
informer.Core().V1().Pods().Informer().GetIndexer().Add(pod)
}
nodeGetter := New(informer)
got, err := nodeGetter.Get("", node.Name)
if err != nil {
t.Fatal(err)
}
nodeGot := got.(*corev1.Node)
if diff := cmp.Diff(nodeGot.Annotations, expectedAnnotations); len(diff) != 0 {
t.Errorf("%T, diff(-got, +expected), %v", expectedAnnotations, nodeGot.Annotations)
}
}

2
pkg/models/resources/v1alpha3/resource/resource.go
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@@ -39,6 +39,7 @@ import (
"kubesphere.io/kubesphere/pkg/models/resources/v1alpha3/globalrole"
"kubesphere.io/kubesphere/pkg/models/resources/v1alpha3/namespace"
"kubesphere.io/kubesphere/pkg/models/resources/v1alpha3/networkpolicy"
"kubesphere.io/kubesphere/pkg/models/resources/v1alpha3/node"
"kubesphere.io/kubesphere/pkg/models/resources/v1alpha3/persistentvolumeclaim"
"kubesphere.io/kubesphere/pkg/models/resources/v1alpha3/pod"
"kubesphere.io/kubesphere/pkg/models/resources/v1alpha3/role"
@@ -61,6 +62,7 @@ func NewResourceGetter(factory informers.InformerFactory) *ResourceGetter {
getters[schema.GroupVersionResource{Group: "", Version: "v1", Resource: "namespaces"}] = namespace.New(factory.KubernetesSharedInformerFactory())
getters[schema.GroupVersionResource{Group: "", Version: "v1", Resource: "configmaps"}] = configmap.New(factory.KubernetesSharedInformerFactory())
getters[schema.GroupVersionResource{Group: "", Version: "v1", Resource: "pods"}] = pod.New(factory.KubernetesSharedInformerFactory())
getters[schema.GroupVersionResource{Group: "", Version: "v1", Resource: "nodes"}] = node.New(factory.KubernetesSharedInformerFactory())
getters[schema.GroupVersionResource{Group: "app.k8s.io", Version: "v1beta1", Resource: "applications"}] = application.New(factory.ApplicationSharedInformerFactory())
getters[schema.GroupVersionResource{Group: "networking.k8s.io", Version: "v1", Resource: "networkpolicies"}] = networkpolicy.New(factory.KubernetesSharedInformerFactory())
getters[tenantv1alpha1.SchemeGroupVersion.WithResource(tenantv1alpha1.ResourcePluralWorkspace)] = workspace.New(factory.KubeSphereSharedInformerFactory())

201
vendor/k8s.io/kubectl/LICENSE generated vendored Normal file
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@@ -0,0 +1,201 @@
Apache License
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152
vendor/k8s.io/kubectl/pkg/util/resource/resource.go generated vendored Normal file
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@@ -0,0 +1,152 @@
/*
Copyright 2018 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 resource
import (
"fmt"
"math"
"strconv"
"strings"
corev1 "k8s.io/api/core/v1"
"k8s.io/apimachinery/pkg/api/resource"
"k8s.io/apimachinery/pkg/util/sets"
)
// PodRequestsAndLimits returns a dictionary of all defined resources summed up for all
// containers of the pod. If pod overhead is non-nil, the pod overhead is added to the
// total container resource requests and to the total container limits which have a
// non-zero quantity.
func PodRequestsAndLimits(pod *corev1.Pod) (reqs, limits corev1.ResourceList) {
reqs, limits = corev1.ResourceList{}, corev1.ResourceList{}
for _, container := range pod.Spec.Containers {
addResourceList(reqs, container.Resources.Requests)
addResourceList(limits, container.Resources.Limits)
}
// init containers define the minimum of any resource
for _, container := range pod.Spec.InitContainers {
maxResourceList(reqs, container.Resources.Requests)
maxResourceList(limits, container.Resources.Limits)
}
// Add overhead for running a pod to the sum of requests and to non-zero limits:
if pod.Spec.Overhead != nil {
addResourceList(reqs, pod.Spec.Overhead)
for name, quantity := range pod.Spec.Overhead {
if value, ok := limits[name]; ok && !value.IsZero() {
value.Add(quantity)
limits[name] = value
}
}
}
return
}
// addResourceList adds the resources in newList to list
func addResourceList(list, new corev1.ResourceList) {
for name, quantity := range new {
if value, ok := list[name]; !ok {
list[name] = quantity.DeepCopy()
} else {
value.Add(quantity)
list[name] = value
}
}
}
// maxResourceList sets list to the greater of list/newList for every resource
// either list
func maxResourceList(list, new corev1.ResourceList) {
for name, quantity := range new {
if value, ok := list[name]; !ok {
list[name] = quantity.DeepCopy()
continue
} else {
if quantity.Cmp(value) > 0 {
list[name] = quantity.DeepCopy()
}
}
}
}
// ExtractContainerResourceValue extracts the value of a resource
// in an already known container
func ExtractContainerResourceValue(fs *corev1.ResourceFieldSelector, container *corev1.Container) (string, error) {
divisor := resource.Quantity{}
if divisor.Cmp(fs.Divisor) == 0 {
divisor = resource.MustParse("1")
} else {
divisor = fs.Divisor
}
switch fs.Resource {
case "limits.cpu":
return convertResourceCPUToString(container.Resources.Limits.Cpu(), divisor)
case "limits.memory":
return convertResourceMemoryToString(container.Resources.Limits.Memory(), divisor)
case "limits.ephemeral-storage":
return convertResourceEphemeralStorageToString(container.Resources.Limits.StorageEphemeral(), divisor)
case "requests.cpu":
return convertResourceCPUToString(container.Resources.Requests.Cpu(), divisor)
case "requests.memory":
return convertResourceMemoryToString(container.Resources.Requests.Memory(), divisor)
case "requests.ephemeral-storage":
return convertResourceEphemeralStorageToString(container.Resources.Requests.StorageEphemeral(), divisor)
}
return "", fmt.Errorf("Unsupported container resource : %v", fs.Resource)
}
// convertResourceCPUToString converts cpu value to the format of divisor and returns
// ceiling of the value.
func convertResourceCPUToString(cpu *resource.Quantity, divisor resource.Quantity) (string, error) {
c := int64(math.Ceil(float64(cpu.MilliValue()) / float64(divisor.MilliValue())))
return strconv.FormatInt(c, 10), nil
}
// convertResourceMemoryToString converts memory value to the format of divisor and returns
// ceiling of the value.
func convertResourceMemoryToString(memory *resource.Quantity, divisor resource.Quantity) (string, error) {
m := int64(math.Ceil(float64(memory.Value()) / float64(divisor.Value())))
return strconv.FormatInt(m, 10), nil
}
// convertResourceEphemeralStorageToString converts ephemeral storage value to the format of divisor and returns
// ceiling of the value.
func convertResourceEphemeralStorageToString(ephemeralStorage *resource.Quantity, divisor resource.Quantity) (string, error) {
m := int64(math.Ceil(float64(ephemeralStorage.Value()) / float64(divisor.Value())))
return strconv.FormatInt(m, 10), nil
}
var standardContainerResources = sets.NewString(
string(corev1.ResourceCPU),
string(corev1.ResourceMemory),
string(corev1.ResourceEphemeralStorage),
)
// IsStandardContainerResourceName returns true if the container can make a resource request
// for the specified resource
func IsStandardContainerResourceName(str string) bool {
return standardContainerResources.Has(str) || IsHugePageResourceName(corev1.ResourceName(str))
}
// IsHugePageResourceName returns true if the resource name has the huge page
// resource prefix.
func IsHugePageResourceName(name corev1.ResourceName) bool {
return strings.HasPrefix(string(name), corev1.ResourceHugePagesPrefix)
}

2
vendor/modules.txt vendored
View File

@@ -1332,6 +1332,8 @@ k8s.io/kube-openapi/pkg/schemaconv
k8s.io/kube-openapi/pkg/util
k8s.io/kube-openapi/pkg/util/proto
k8s.io/kube-openapi/pkg/util/sets
# k8s.io/kubectl v0.17.3 => k8s.io/kubectl v0.17.3
k8s.io/kubectl/pkg/util/resource
# k8s.io/utils v0.0.0-20191114184206-e782cd3c129f => k8s.io/utils v0.0.0-20191114184206-e782cd3c129f
k8s.io/utils/buffer
k8s.io/utils/integer