39418b175f
GetPodCgroupNameSuffix is not really implemented under darwin (or windows for that matter). So let's just skip over the check for CPU and Memory if that is not set.
289 lines
11 KiB
Go
289 lines
11 KiB
Go
/*
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Copyright 2017 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 stats
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import (
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"testing"
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cadvisorapiv2 "github.com/google/cadvisor/info/v2"
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"github.com/stretchr/testify/assert"
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statsapi "k8s.io/kubernetes/pkg/kubelet/apis/stats/v1alpha1"
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cadvisortest "k8s.io/kubernetes/pkg/kubelet/cadvisor/testing"
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kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
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containertest "k8s.io/kubernetes/pkg/kubelet/container/testing"
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"k8s.io/kubernetes/pkg/kubelet/leaky"
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serverstats "k8s.io/kubernetes/pkg/kubelet/server/stats"
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)
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func TestRemoveTerminatedContainerInfo(t *testing.T) {
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const (
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seedPastPod0Infra = 1000
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seedPastPod0Container0 = 2000
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seedPod0Infra = 3000
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seedPod0Container0 = 4000
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)
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const (
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namespace = "test"
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pName0 = "pod0"
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cName00 = "c0"
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)
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infos := map[string]cadvisorapiv2.ContainerInfo{
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// ContainerInfo with past creation time and no CPU/memory usage for
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// simulating uncleaned cgroups of already terminated containers, which
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// should not be shown in the results.
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"/pod0-i-terminated-1": getTerminatedContainerInfo(seedPastPod0Infra, pName0, namespace, leaky.PodInfraContainerName),
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"/pod0-c0-terminated-1": getTerminatedContainerInfo(seedPastPod0Container0, pName0, namespace, cName00),
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// Same as above but uses the same creation time as the latest
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// containers. They are terminated containers, so they should not be in
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// the results.
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"/pod0-i-terminated-2": getTerminatedContainerInfo(seedPod0Infra, pName0, namespace, leaky.PodInfraContainerName),
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"/pod0-c0-terminated-2": getTerminatedContainerInfo(seedPod0Container0, pName0, namespace, cName00),
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// The latest containers, which should be in the results.
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"/pod0-i": getTestContainerInfo(seedPod0Infra, pName0, namespace, leaky.PodInfraContainerName),
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"/pod0-c0": getTestContainerInfo(seedPod0Container0, pName0, namespace, cName00),
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// Duplicated containers with non-zero CPU and memory usage. This case
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// shouldn't happen unless something goes wrong, but we want to test
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// that the metrics reporting logic works in this scenario.
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"/pod0-i-duplicated": getTestContainerInfo(seedPod0Infra, pName0, namespace, leaky.PodInfraContainerName),
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"/pod0-c0-duplicated": getTestContainerInfo(seedPod0Container0, pName0, namespace, cName00),
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}
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output := removeTerminatedContainerInfo(infos)
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assert.Len(t, output, 4)
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for _, c := range []string{"/pod0-i", "/pod0-c0", "/pod0-i-duplicated", "/pod0-c0-duplicated"} {
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if _, found := output[c]; !found {
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t.Errorf("%q is expected to be in the output\n", c)
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}
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}
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}
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func TestCadvisorListPodStats(t *testing.T) {
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const (
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namespace0 = "test0"
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namespace2 = "test2"
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)
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const (
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seedRoot = 0
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seedRuntime = 100
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seedKubelet = 200
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seedMisc = 300
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seedPod0Infra = 1000
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seedPod0Container0 = 2000
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seedPod0Container1 = 2001
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seedPod1Infra = 3000
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seedPod1Container = 4000
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seedPod2Infra = 5000
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seedPod2Container = 6000
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seedEphemeralVolume1 = 10000
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seedEphemeralVolume2 = 10001
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seedPersistentVolume1 = 20000
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seedPersistentVolume2 = 20001
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)
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const (
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pName0 = "pod0"
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pName1 = "pod1"
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pName2 = "pod0" // ensure pName2 conflicts with pName0, but is in a different namespace
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)
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const (
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cName00 = "c0"
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cName01 = "c1"
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cName10 = "c0" // ensure cName10 conflicts with cName02, but is in a different pod
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cName20 = "c1" // ensure cName20 conflicts with cName01, but is in a different pod + namespace
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)
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const (
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rootfsCapacity = uint64(10000000)
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rootfsAvailable = uint64(5000000)
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rootfsInodesFree = uint64(1000)
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rootfsInodes = uint64(2000)
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imagefsCapacity = uint64(20000000)
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imagefsAvailable = uint64(8000000)
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imagefsInodesFree = uint64(2000)
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imagefsInodes = uint64(4000)
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)
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prf0 := statsapi.PodReference{Name: pName0, Namespace: namespace0, UID: "UID" + pName0}
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prf1 := statsapi.PodReference{Name: pName1, Namespace: namespace0, UID: "UID" + pName1}
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prf2 := statsapi.PodReference{Name: pName2, Namespace: namespace2, UID: "UID" + pName2}
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infos := map[string]cadvisorapiv2.ContainerInfo{
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"/": getTestContainerInfo(seedRoot, "", "", ""),
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"/docker-daemon": getTestContainerInfo(seedRuntime, "", "", ""),
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"/kubelet": getTestContainerInfo(seedKubelet, "", "", ""),
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"/system": getTestContainerInfo(seedMisc, "", "", ""),
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// Pod0 - Namespace0
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"/pod0-i": getTestContainerInfo(seedPod0Infra, pName0, namespace0, leaky.PodInfraContainerName),
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"/pod0-c0": getTestContainerInfo(seedPod0Container0, pName0, namespace0, cName00),
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"/pod0-c1": getTestContainerInfo(seedPod0Container1, pName0, namespace0, cName01),
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// Pod1 - Namespace0
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"/pod1-i": getTestContainerInfo(seedPod1Infra, pName1, namespace0, leaky.PodInfraContainerName),
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"/pod1-c0": getTestContainerInfo(seedPod1Container, pName1, namespace0, cName10),
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// Pod2 - Namespace2
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"/pod2-i": getTestContainerInfo(seedPod2Infra, pName2, namespace2, leaky.PodInfraContainerName),
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"/pod2-c0": getTestContainerInfo(seedPod2Container, pName2, namespace2, cName20),
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"/kubepods/burstable/podUIDpod0": getTestContainerInfo(seedPod0Infra, pName0, namespace0, leaky.PodInfraContainerName),
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"/kubepods/podUIDpod1": getTestContainerInfo(seedPod1Infra, pName1, namespace0, leaky.PodInfraContainerName),
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}
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freeRootfsInodes := rootfsInodesFree
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totalRootfsInodes := rootfsInodes
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rootfs := cadvisorapiv2.FsInfo{
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Capacity: rootfsCapacity,
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Available: rootfsAvailable,
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InodesFree: &freeRootfsInodes,
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Inodes: &totalRootfsInodes,
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}
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freeImagefsInodes := imagefsInodesFree
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totalImagefsInodes := imagefsInodes
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imagefs := cadvisorapiv2.FsInfo{
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Capacity: imagefsCapacity,
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Available: imagefsAvailable,
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InodesFree: &freeImagefsInodes,
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Inodes: &totalImagefsInodes,
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}
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// memory limit overrides for each container (used to test available bytes if a memory limit is known)
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memoryLimitOverrides := map[string]uint64{
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"/": uint64(1 << 30),
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"/pod2-c0": uint64(1 << 15),
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}
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for name, memoryLimitOverride := range memoryLimitOverrides {
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info, found := infos[name]
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if !found {
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t.Errorf("No container defined with name %v", name)
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}
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info.Spec.Memory.Limit = memoryLimitOverride
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infos[name] = info
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}
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options := cadvisorapiv2.RequestOptions{
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IdType: cadvisorapiv2.TypeName,
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Count: 2,
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Recursive: true,
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}
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mockCadvisor := new(cadvisortest.Mock)
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mockCadvisor.
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On("ContainerInfoV2", "/", options).Return(infos, nil).
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On("RootFsInfo").Return(rootfs, nil).
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On("ImagesFsInfo").Return(imagefs, nil)
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mockRuntime := new(containertest.Mock)
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mockRuntime.
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On("ImageStats").Return(&kubecontainer.ImageStats{TotalStorageBytes: 123}, nil)
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ephemeralVolumes := []statsapi.VolumeStats{getPodVolumeStats(seedEphemeralVolume1, "ephemeralVolume1"),
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getPodVolumeStats(seedEphemeralVolume2, "ephemeralVolume2")}
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persistentVolumes := []statsapi.VolumeStats{getPodVolumeStats(seedPersistentVolume1, "persistentVolume1"),
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getPodVolumeStats(seedPersistentVolume2, "persistentVolume2")}
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volumeStats := serverstats.PodVolumeStats{
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EphemeralVolumes: ephemeralVolumes,
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PersistentVolumes: persistentVolumes,
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}
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resourceAnalyzer := &fakeResourceAnalyzer{podVolumeStats: volumeStats}
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p := NewCadvisorStatsProvider(mockCadvisor, resourceAnalyzer, nil, nil, mockRuntime)
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pods, err := p.ListPodStats()
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assert.NoError(t, err)
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assert.Equal(t, 3, len(pods))
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indexPods := make(map[statsapi.PodReference]statsapi.PodStats, len(pods))
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for _, pod := range pods {
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indexPods[pod.PodRef] = pod
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}
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// Validate Pod0 Results
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ps, found := indexPods[prf0]
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assert.True(t, found)
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assert.Len(t, ps.Containers, 2)
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indexCon := make(map[string]statsapi.ContainerStats, len(ps.Containers))
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for _, con := range ps.Containers {
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indexCon[con.Name] = con
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}
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con := indexCon[cName00]
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assert.EqualValues(t, testTime(creationTime, seedPod0Container0).Unix(), con.StartTime.Time.Unix())
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checkCPUStats(t, "Pod0Container0", seedPod0Container0, con.CPU)
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checkMemoryStats(t, "Pod0Conainer0", seedPod0Container0, infos["/pod0-c0"], con.Memory)
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con = indexCon[cName01]
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assert.EqualValues(t, testTime(creationTime, seedPod0Container1).Unix(), con.StartTime.Time.Unix())
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checkCPUStats(t, "Pod0Container1", seedPod0Container1, con.CPU)
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checkMemoryStats(t, "Pod0Container1", seedPod0Container1, infos["/pod0-c1"], con.Memory)
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assert.EqualValues(t, testTime(creationTime, seedPod0Infra).Unix(), ps.StartTime.Time.Unix())
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checkNetworkStats(t, "Pod0", seedPod0Infra, ps.Network)
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checkEphemeralStats(t, "Pod0", []int{seedPod0Container0, seedPod0Container1}, []int{seedEphemeralVolume1, seedEphemeralVolume2}, ps.EphemeralStorage)
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if ps.CPU != nil {
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checkCPUStats(t, "Pod0", seedPod0Infra, ps.CPU)
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}
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if ps.Memory != nil {
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checkMemoryStats(t, "Pod0", seedPod0Infra, infos["/pod0-i"], ps.Memory)
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}
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// Validate Pod1 Results
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ps, found = indexPods[prf1]
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assert.True(t, found)
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assert.Len(t, ps.Containers, 1)
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con = ps.Containers[0]
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assert.Equal(t, cName10, con.Name)
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checkCPUStats(t, "Pod1Container0", seedPod1Container, con.CPU)
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checkMemoryStats(t, "Pod1Container0", seedPod1Container, infos["/pod1-c0"], con.Memory)
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checkNetworkStats(t, "Pod1", seedPod1Infra, ps.Network)
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// Validate Pod2 Results
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ps, found = indexPods[prf2]
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assert.True(t, found)
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assert.Len(t, ps.Containers, 1)
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con = ps.Containers[0]
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assert.Equal(t, cName20, con.Name)
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checkCPUStats(t, "Pod2Container0", seedPod2Container, con.CPU)
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checkMemoryStats(t, "Pod2Container0", seedPod2Container, infos["/pod2-c0"], con.Memory)
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checkNetworkStats(t, "Pod2", seedPod2Infra, ps.Network)
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}
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func TestCadvisorImagesFsStats(t *testing.T) {
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var (
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assert = assert.New(t)
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mockCadvisor = new(cadvisortest.Mock)
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mockRuntime = new(containertest.Mock)
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seed = 1000
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imageFsInfo = getTestFsInfo(seed)
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imageStats = &kubecontainer.ImageStats{TotalStorageBytes: 100}
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)
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mockCadvisor.On("ImagesFsInfo").Return(imageFsInfo, nil)
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mockRuntime.On("ImageStats").Return(imageStats, nil)
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provider := newCadvisorStatsProvider(mockCadvisor, &fakeResourceAnalyzer{}, mockRuntime)
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stats, err := provider.ImageFsStats()
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assert.NoError(err)
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assert.Equal(imageFsInfo.Timestamp, stats.Time.Time)
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assert.Equal(imageFsInfo.Available, *stats.AvailableBytes)
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assert.Equal(imageFsInfo.Capacity, *stats.CapacityBytes)
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assert.Equal(imageStats.TotalStorageBytes, *stats.UsedBytes)
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assert.Equal(imageFsInfo.InodesFree, stats.InodesFree)
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assert.Equal(imageFsInfo.Inodes, stats.Inodes)
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assert.Equal(*imageFsInfo.Inodes-*imageFsInfo.InodesFree, *stats.InodesUsed)
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mockCadvisor.AssertExpectations(t)
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}
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