mirror of
https://github.com/optim-enterprises-bv/kubernetes.git
synced 2025-10-31 10:18:13 +00:00
Extend authorization benchmark
This commit is contained in:
wojtekt
@@ -19,6 +19,7 @@ package node
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import (
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"context"
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"fmt"
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"math/rand"
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"runtime"
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"runtime/pprof"
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"sync/atomic"
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@@ -65,7 +66,7 @@ func init() {
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func TestAuthorizer(t *testing.T) {
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g := NewGraph()
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opts := sampleDataOpts{
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opts := &sampleDataOpts{
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nodes: 2,
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namespaces: 2,
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podsPerNode: 2,
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@@ -521,14 +522,25 @@ func TestAuthorizerSharedResources(t *testing.T) {
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}
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type sampleDataOpts struct {
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nodes int
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namespaces int
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nodes int
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namespaces int
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podsPerNode int
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attachmentsPerNode int
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// sharedConfigMapsPerNamespaces defines number of shared configmaps in a given
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// namespace. Each pod then mounts a random set of size `sharedConfigMapsPerPod`
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// from that set. sharedConfigMapsPerPod is used if greater.
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sharedConfigMapsPerNamespace int
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// sharedSecretsPerNamespaces defines number of shared secrets in a given
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// namespace. Each pod then mounts a random set of size `sharedSecretsPerPod`
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// from that set. sharedSecretsPerPod is used if greater.
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sharedSecretsPerNamespace int
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// sharedPVCsPerNamespaces defines number of shared pvcs in a given
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// namespace. Each pod then mounts a random set of size `sharedPVCsPerPod`
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// from that set. sharedPVCsPerPod is used if greater.
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sharedPVCsPerNamespace int
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sharedConfigMapsPerPod int
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sharedSecretsPerPod int
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sharedPVCsPerPod int
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@@ -539,7 +551,7 @@ type sampleDataOpts struct {
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}
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func BenchmarkPopulationAllocation(b *testing.B) {
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opts := sampleDataOpts{
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opts := &sampleDataOpts{
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nodes: 500,
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namespaces: 200,
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podsPerNode: 200,
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@@ -570,7 +582,7 @@ func BenchmarkPopulationRetention(b *testing.B) {
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// go tool pprof --inuse_space node.test plugin/pkg/auth/authorizer/node/BenchmarkPopulationRetention.profile
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// list populate
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opts := sampleDataOpts{
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opts := &sampleDataOpts{
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nodes: 500,
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namespaces: 200,
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podsPerNode: 200,
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@@ -608,7 +620,7 @@ func BenchmarkWriteIndexMaintenance(b *testing.B) {
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// Run with:
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// go test ./plugin/pkg/auth/authorizer/node -benchmem -bench BenchmarkWriteIndexMaintenance -run None
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opts := sampleDataOpts{
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opts := &sampleDataOpts{
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// simulate high replication in a small number of namespaces:
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nodes: 5000,
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namespaces: 1,
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@@ -639,7 +651,7 @@ func BenchmarkWriteIndexMaintenance(b *testing.B) {
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func BenchmarkAuthorization(b *testing.B) {
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g := NewGraph()
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opts := sampleDataOpts{
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opts := &sampleDataOpts{
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// To simulate high replication in a small number of namespaces:
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// nodes: 5000,
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// namespaces: 10,
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@@ -732,6 +744,8 @@ func BenchmarkAuthorization(b *testing.B) {
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},
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}
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podToAdd, _ := generatePod("testwrite", "ns0", "node0", "default", opts)
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b.ResetTimer()
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for _, testWriteContention := range []bool{false, true} {
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@@ -755,16 +769,7 @@ func BenchmarkAuthorization(b *testing.B) {
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for shouldWrite == 1 {
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go func() {
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start := time.Now()
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authz.graph.AddPod(&corev1.Pod{
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ObjectMeta: metav1.ObjectMeta{Name: "testwrite", Namespace: "ns0"},
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Spec: corev1.PodSpec{
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NodeName: "node0",
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ServiceAccountName: "default",
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Volumes: []corev1.Volume{
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{Name: "token", VolumeSource: corev1.VolumeSource{Secret: &corev1.SecretVolumeSource{SecretName: "secret0-shared"}}},
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},
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},
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})
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authz.graph.AddPod(podToAdd)
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diff := time.Since(start)
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atomic.AddInt64(&writes, 1)
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switch {
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@@ -840,71 +845,35 @@ func populate(graph *Graph, nodes []*corev1.Node, pods []*corev1.Pod, pvs []*cor
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}
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}
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func randomSubset(a, b int) []int {
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if b < a {
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b = a
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}
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return rand.Perm(b)[:a]
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}
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// generate creates sample pods and persistent volumes based on the provided options.
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// the secret/configmap/pvc/node references in the pod and pv objects are named to indicate the connections between the objects.
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// for example, secret0-pod0-node0 is a secret referenced by pod0 which is bound to node0.
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// when populated into the graph, the node authorizer should allow node0 to access that secret, but not node1.
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func generate(opts sampleDataOpts) ([]*corev1.Node, []*corev1.Pod, []*corev1.PersistentVolume, []*storagev1.VolumeAttachment) {
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func generate(opts *sampleDataOpts) ([]*corev1.Node, []*corev1.Pod, []*corev1.PersistentVolume, []*storagev1.VolumeAttachment) {
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nodes := make([]*corev1.Node, 0, opts.nodes)
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pods := make([]*corev1.Pod, 0, opts.nodes*opts.podsPerNode)
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pvs := make([]*corev1.PersistentVolume, 0, (opts.nodes*opts.podsPerNode*opts.uniquePVCsPerPod)+(opts.sharedPVCsPerPod*opts.namespaces))
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attachments := make([]*storagev1.VolumeAttachment, 0, opts.nodes*opts.attachmentsPerNode)
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rand.Seed(12345)
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for n := 0; n < opts.nodes; n++ {
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nodeName := fmt.Sprintf("node%d", n)
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for p := 0; p < opts.podsPerNode; p++ {
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pod := &corev1.Pod{}
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pod.Namespace = fmt.Sprintf("ns%d", p%opts.namespaces)
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pod.Name = fmt.Sprintf("pod%d-%s", p, nodeName)
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pod.Spec.NodeName = nodeName
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pod.Spec.ServiceAccountName = fmt.Sprintf("svcacct%d-%s", p, nodeName)
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for i := 0; i < opts.uniqueSecretsPerPod; i++ {
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pod.Spec.Volumes = append(pod.Spec.Volumes, corev1.Volume{VolumeSource: corev1.VolumeSource{
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Secret: &corev1.SecretVolumeSource{SecretName: fmt.Sprintf("secret%d-%s", i, pod.Name)},
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}})
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}
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for i := 0; i < opts.sharedSecretsPerPod; i++ {
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pod.Spec.Volumes = append(pod.Spec.Volumes, corev1.Volume{VolumeSource: corev1.VolumeSource{
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Secret: &corev1.SecretVolumeSource{SecretName: fmt.Sprintf("secret%d-shared", i)},
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}})
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}
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for i := 0; i < opts.uniqueConfigMapsPerPod; i++ {
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pod.Spec.Volumes = append(pod.Spec.Volumes, corev1.Volume{VolumeSource: corev1.VolumeSource{
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ConfigMap: &corev1.ConfigMapVolumeSource{LocalObjectReference: corev1.LocalObjectReference{Name: fmt.Sprintf("configmap%d-%s", i, pod.Name)}},
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}})
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}
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for i := 0; i < opts.sharedConfigMapsPerPod; i++ {
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pod.Spec.Volumes = append(pod.Spec.Volumes, corev1.Volume{VolumeSource: corev1.VolumeSource{
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ConfigMap: &corev1.ConfigMapVolumeSource{LocalObjectReference: corev1.LocalObjectReference{Name: fmt.Sprintf("configmap%d-shared", i)}},
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}})
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}
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for i := 0; i < opts.uniquePVCsPerPod; i++ {
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pv := &corev1.PersistentVolume{}
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pv.Name = fmt.Sprintf("pv%d-%s-%s", i, pod.Name, pod.Namespace)
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pv.Spec.FlexVolume = &corev1.FlexPersistentVolumeSource{SecretRef: &corev1.SecretReference{Name: fmt.Sprintf("secret-%s", pv.Name)}}
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pv.Spec.ClaimRef = &corev1.ObjectReference{Name: fmt.Sprintf("pvc%d-%s", i, pod.Name), Namespace: pod.Namespace}
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pvs = append(pvs, pv)
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pod.Spec.Volumes = append(pod.Spec.Volumes, corev1.Volume{VolumeSource: corev1.VolumeSource{
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PersistentVolumeClaim: &corev1.PersistentVolumeClaimVolumeSource{ClaimName: pv.Spec.ClaimRef.Name},
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}})
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}
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for i := 0; i < opts.sharedPVCsPerPod; i++ {
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pv := &corev1.PersistentVolume{}
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pv.Name = fmt.Sprintf("pv%d-shared-%s", i, pod.Namespace)
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pv.Spec.FlexVolume = &corev1.FlexPersistentVolumeSource{SecretRef: &corev1.SecretReference{Name: fmt.Sprintf("secret-%s", pv.Name)}}
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pv.Spec.ClaimRef = &corev1.ObjectReference{Name: fmt.Sprintf("pvc%d-shared", i), Namespace: pod.Namespace}
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pvs = append(pvs, pv)
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pod.Spec.Volumes = append(pod.Spec.Volumes, corev1.Volume{VolumeSource: corev1.VolumeSource{
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PersistentVolumeClaim: &corev1.PersistentVolumeClaimVolumeSource{ClaimName: pv.Spec.ClaimRef.Name},
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}})
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}
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name := fmt.Sprintf("pod%d-%s", p, nodeName)
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namespace := fmt.Sprintf("ns%d", p%opts.namespaces)
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svcAccountName := fmt.Sprintf("svcacct%d-%s", p, nodeName)
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pod, podPVs := generatePod(name, namespace, nodeName, svcAccountName, opts)
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pods = append(pods, pod)
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pvs = append(pvs, podPVs...)
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}
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for a := 0; a < opts.attachmentsPerNode; a++ {
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attachment := &storagev1.VolumeAttachment{}
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@@ -930,3 +899,66 @@ func generate(opts sampleDataOpts) ([]*corev1.Node, []*corev1.Pod, []*corev1.Per
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}
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return nodes, pods, pvs, attachments
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}
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func generatePod(name, namespace, nodeName, svcAccountName string, opts *sampleDataOpts) (*corev1.Pod, []*corev1.PersistentVolume) {
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pvs := make([]*corev1.PersistentVolume, 0, opts.uniquePVCsPerPod+opts.sharedPVCsPerPod)
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pod := &corev1.Pod{}
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pod.Name = name
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pod.Namespace = namespace
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pod.Spec.NodeName = nodeName
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pod.Spec.ServiceAccountName = svcAccountName
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for i := 0; i < opts.uniqueSecretsPerPod; i++ {
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pod.Spec.Volumes = append(pod.Spec.Volumes, corev1.Volume{VolumeSource: corev1.VolumeSource{
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Secret: &corev1.SecretVolumeSource{SecretName: fmt.Sprintf("secret%d-%s", i, pod.Name)},
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}})
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}
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// Choose shared secrets randomly from shared secrets in a namespace.
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subset := randomSubset(opts.sharedSecretsPerPod, opts.sharedSecretsPerNamespace)
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for _, i := range subset {
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pod.Spec.Volumes = append(pod.Spec.Volumes, corev1.Volume{VolumeSource: corev1.VolumeSource{
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Secret: &corev1.SecretVolumeSource{SecretName: fmt.Sprintf("secret%d-shared", i)},
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}})
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}
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for i := 0; i < opts.uniqueConfigMapsPerPod; i++ {
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pod.Spec.Volumes = append(pod.Spec.Volumes, corev1.Volume{VolumeSource: corev1.VolumeSource{
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ConfigMap: &corev1.ConfigMapVolumeSource{LocalObjectReference: corev1.LocalObjectReference{Name: fmt.Sprintf("configmap%d-%s", i, pod.Name)}},
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}})
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}
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// Choose shared configmaps randomly from shared configmaps in a namespace.
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subset = randomSubset(opts.sharedConfigMapsPerPod, opts.sharedConfigMapsPerNamespace)
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for _, i := range subset {
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pod.Spec.Volumes = append(pod.Spec.Volumes, corev1.Volume{VolumeSource: corev1.VolumeSource{
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ConfigMap: &corev1.ConfigMapVolumeSource{LocalObjectReference: corev1.LocalObjectReference{Name: fmt.Sprintf("configmap%d-shared", i)}},
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}})
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}
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for i := 0; i < opts.uniquePVCsPerPod; i++ {
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pv := &corev1.PersistentVolume{}
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pv.Name = fmt.Sprintf("pv%d-%s-%s", i, pod.Name, pod.Namespace)
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pv.Spec.FlexVolume = &corev1.FlexPersistentVolumeSource{SecretRef: &corev1.SecretReference{Name: fmt.Sprintf("secret-%s", pv.Name)}}
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pv.Spec.ClaimRef = &corev1.ObjectReference{Name: fmt.Sprintf("pvc%d-%s", i, pod.Name), Namespace: pod.Namespace}
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pvs = append(pvs, pv)
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pod.Spec.Volumes = append(pod.Spec.Volumes, corev1.Volume{VolumeSource: corev1.VolumeSource{
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PersistentVolumeClaim: &corev1.PersistentVolumeClaimVolumeSource{ClaimName: pv.Spec.ClaimRef.Name},
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}})
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}
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// Choose shared pvcs randomly from shared pvcs in a namespace.
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subset = randomSubset(opts.sharedPVCsPerPod, opts.sharedPVCsPerNamespace)
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for _, i := range subset {
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pv := &corev1.PersistentVolume{}
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pv.Name = fmt.Sprintf("pv%d-shared-%s", i, pod.Namespace)
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pv.Spec.FlexVolume = &corev1.FlexPersistentVolumeSource{SecretRef: &corev1.SecretReference{Name: fmt.Sprintf("secret-%s", pv.Name)}}
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pv.Spec.ClaimRef = &corev1.ObjectReference{Name: fmt.Sprintf("pvc%d-shared", i), Namespace: pod.Namespace}
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pvs = append(pvs, pv)
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pod.Spec.Volumes = append(pod.Spec.Volumes, corev1.Volume{VolumeSource: corev1.VolumeSource{
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PersistentVolumeClaim: &corev1.PersistentVolumeClaimVolumeSource{ClaimName: pv.Spec.ClaimRef.Name},
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}})
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}
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return pod, pvs
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}
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