mirror of
https://github.com/k3s-io/kubernetes.git
synced 2025-07-26 21:17:23 +00:00
0064010cdd
This change is to promote local storage capacity isolation feature to GA At the same time, to allow rootless system disable this feature due to unable to get root fs, this change introduced a new kubelet config "localStorageCapacityIsolation". By default it is set to true. For rootless systems, they can set this configuration to false to disable the feature. Once it is set, user cannot set ephemeral-storage request/limit because capacity and allocatable will not be set. Change-Id: I48a52e737c6a09e9131454db6ad31247b56c000a
405 lines
11 KiB
Go
405 lines
11 KiB
Go
//go:build linux
|
|
// +build linux
|
|
|
|
/*
|
|
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 kubelet
|
|
|
|
import (
|
|
"testing"
|
|
|
|
"github.com/stretchr/testify/assert"
|
|
v1 "k8s.io/api/core/v1"
|
|
|
|
runtimeapi "k8s.io/cri-api/pkg/apis/runtime/v1"
|
|
_ "k8s.io/kubernetes/pkg/apis/core/install"
|
|
kubecontainer "k8s.io/kubernetes/pkg/kubelet/container"
|
|
volumetest "k8s.io/kubernetes/pkg/volume/testing"
|
|
"k8s.io/kubernetes/pkg/volume/util/hostutil"
|
|
"k8s.io/kubernetes/pkg/volume/util/subpath"
|
|
)
|
|
|
|
func TestMakeMounts(t *testing.T) {
|
|
bTrue := true
|
|
propagationHostToContainer := v1.MountPropagationHostToContainer
|
|
propagationBidirectional := v1.MountPropagationBidirectional
|
|
propagationNone := v1.MountPropagationNone
|
|
|
|
testCases := map[string]struct {
|
|
container v1.Container
|
|
podVolumes kubecontainer.VolumeMap
|
|
expectErr bool
|
|
expectedErrMsg string
|
|
expectedMounts []kubecontainer.Mount
|
|
}{
|
|
"valid mounts in unprivileged container": {
|
|
podVolumes: kubecontainer.VolumeMap{
|
|
"disk": kubecontainer.VolumeInfo{Mounter: &stubVolume{path: "/mnt/disk"}},
|
|
"disk4": kubecontainer.VolumeInfo{Mounter: &stubVolume{path: "/mnt/host"}},
|
|
"disk5": kubecontainer.VolumeInfo{Mounter: &stubVolume{path: "/var/lib/kubelet/podID/volumes/empty/disk5"}},
|
|
},
|
|
container: v1.Container{
|
|
Name: "container1",
|
|
VolumeMounts: []v1.VolumeMount{
|
|
{
|
|
MountPath: "/etc/hosts",
|
|
Name: "disk",
|
|
ReadOnly: false,
|
|
MountPropagation: &propagationHostToContainer,
|
|
},
|
|
{
|
|
MountPath: "/mnt/path3",
|
|
Name: "disk",
|
|
ReadOnly: true,
|
|
MountPropagation: &propagationNone,
|
|
},
|
|
{
|
|
MountPath: "/mnt/path4",
|
|
Name: "disk4",
|
|
ReadOnly: false,
|
|
},
|
|
{
|
|
MountPath: "/mnt/path5",
|
|
Name: "disk5",
|
|
ReadOnly: false,
|
|
},
|
|
},
|
|
},
|
|
expectedMounts: []kubecontainer.Mount{
|
|
{
|
|
Name: "disk",
|
|
ContainerPath: "/etc/hosts",
|
|
HostPath: "/mnt/disk",
|
|
ReadOnly: false,
|
|
SELinuxRelabel: false,
|
|
Propagation: runtimeapi.MountPropagation_PROPAGATION_HOST_TO_CONTAINER,
|
|
},
|
|
{
|
|
Name: "disk",
|
|
ContainerPath: "/mnt/path3",
|
|
HostPath: "/mnt/disk",
|
|
ReadOnly: true,
|
|
SELinuxRelabel: false,
|
|
Propagation: runtimeapi.MountPropagation_PROPAGATION_PRIVATE,
|
|
},
|
|
{
|
|
Name: "disk4",
|
|
ContainerPath: "/mnt/path4",
|
|
HostPath: "/mnt/host",
|
|
ReadOnly: false,
|
|
SELinuxRelabel: false,
|
|
Propagation: runtimeapi.MountPropagation_PROPAGATION_PRIVATE,
|
|
},
|
|
{
|
|
Name: "disk5",
|
|
ContainerPath: "/mnt/path5",
|
|
HostPath: "/var/lib/kubelet/podID/volumes/empty/disk5",
|
|
ReadOnly: false,
|
|
SELinuxRelabel: false,
|
|
Propagation: runtimeapi.MountPropagation_PROPAGATION_PRIVATE,
|
|
},
|
|
},
|
|
expectErr: false,
|
|
},
|
|
"valid mounts in privileged container": {
|
|
podVolumes: kubecontainer.VolumeMap{
|
|
"disk": kubecontainer.VolumeInfo{Mounter: &stubVolume{path: "/mnt/disk"}},
|
|
"disk4": kubecontainer.VolumeInfo{Mounter: &stubVolume{path: "/mnt/host"}},
|
|
"disk5": kubecontainer.VolumeInfo{Mounter: &stubVolume{path: "/var/lib/kubelet/podID/volumes/empty/disk5"}},
|
|
},
|
|
container: v1.Container{
|
|
Name: "container1",
|
|
VolumeMounts: []v1.VolumeMount{
|
|
{
|
|
MountPath: "/etc/hosts",
|
|
Name: "disk",
|
|
ReadOnly: false,
|
|
MountPropagation: &propagationBidirectional,
|
|
},
|
|
{
|
|
MountPath: "/mnt/path3",
|
|
Name: "disk",
|
|
ReadOnly: true,
|
|
MountPropagation: &propagationHostToContainer,
|
|
},
|
|
{
|
|
MountPath: "/mnt/path4",
|
|
Name: "disk4",
|
|
ReadOnly: false,
|
|
},
|
|
},
|
|
SecurityContext: &v1.SecurityContext{
|
|
Privileged: &bTrue,
|
|
},
|
|
},
|
|
expectedMounts: []kubecontainer.Mount{
|
|
{
|
|
Name: "disk",
|
|
ContainerPath: "/etc/hosts",
|
|
HostPath: "/mnt/disk",
|
|
ReadOnly: false,
|
|
SELinuxRelabel: false,
|
|
Propagation: runtimeapi.MountPropagation_PROPAGATION_BIDIRECTIONAL,
|
|
},
|
|
{
|
|
Name: "disk",
|
|
ContainerPath: "/mnt/path3",
|
|
HostPath: "/mnt/disk",
|
|
ReadOnly: true,
|
|
SELinuxRelabel: false,
|
|
Propagation: runtimeapi.MountPropagation_PROPAGATION_HOST_TO_CONTAINER,
|
|
},
|
|
{
|
|
Name: "disk4",
|
|
ContainerPath: "/mnt/path4",
|
|
HostPath: "/mnt/host",
|
|
ReadOnly: false,
|
|
SELinuxRelabel: false,
|
|
Propagation: runtimeapi.MountPropagation_PROPAGATION_PRIVATE,
|
|
},
|
|
},
|
|
expectErr: false,
|
|
},
|
|
"invalid absolute SubPath": {
|
|
podVolumes: kubecontainer.VolumeMap{
|
|
"disk": kubecontainer.VolumeInfo{Mounter: &stubVolume{path: "/mnt/disk"}},
|
|
},
|
|
container: v1.Container{
|
|
VolumeMounts: []v1.VolumeMount{
|
|
{
|
|
MountPath: "/mnt/path3",
|
|
SubPath: "/must/not/be/absolute",
|
|
Name: "disk",
|
|
ReadOnly: true,
|
|
},
|
|
},
|
|
},
|
|
expectErr: true,
|
|
expectedErrMsg: "error SubPath `/must/not/be/absolute` must not be an absolute path",
|
|
},
|
|
"invalid SubPath with backsteps": {
|
|
podVolumes: kubecontainer.VolumeMap{
|
|
"disk": kubecontainer.VolumeInfo{Mounter: &stubVolume{path: "/mnt/disk"}},
|
|
},
|
|
container: v1.Container{
|
|
VolumeMounts: []v1.VolumeMount{
|
|
{
|
|
MountPath: "/mnt/path3",
|
|
SubPath: "no/backsteps/../allowed",
|
|
Name: "disk",
|
|
ReadOnly: true,
|
|
},
|
|
},
|
|
},
|
|
expectErr: true,
|
|
expectedErrMsg: "unable to provision SubPath `no/backsteps/../allowed`: must not contain '..'",
|
|
},
|
|
"volume doesn't exist": {
|
|
podVolumes: kubecontainer.VolumeMap{},
|
|
container: v1.Container{
|
|
VolumeMounts: []v1.VolumeMount{
|
|
{
|
|
MountPath: "/mnt/path3",
|
|
Name: "disk",
|
|
ReadOnly: true,
|
|
},
|
|
},
|
|
},
|
|
expectErr: true,
|
|
expectedErrMsg: "cannot find volume \"disk\" to mount into container \"\"",
|
|
},
|
|
"volume mounter is nil": {
|
|
podVolumes: kubecontainer.VolumeMap{
|
|
"disk": kubecontainer.VolumeInfo{},
|
|
},
|
|
container: v1.Container{
|
|
VolumeMounts: []v1.VolumeMount{
|
|
{
|
|
MountPath: "/mnt/path3",
|
|
Name: "disk",
|
|
ReadOnly: true,
|
|
},
|
|
},
|
|
},
|
|
expectErr: true,
|
|
expectedErrMsg: "cannot find volume \"disk\" to mount into container \"\"",
|
|
},
|
|
}
|
|
|
|
for name, tc := range testCases {
|
|
t.Run(name, func(t *testing.T) {
|
|
fhu := hostutil.NewFakeHostUtil(nil)
|
|
fsp := &subpath.FakeSubpath{}
|
|
pod := v1.Pod{
|
|
Spec: v1.PodSpec{
|
|
HostNetwork: true,
|
|
},
|
|
}
|
|
|
|
mounts, _, err := makeMounts(&pod, "/pod", &tc.container, "fakepodname", "", []string{""}, tc.podVolumes, fhu, fsp, nil)
|
|
|
|
// validate only the error if we expect an error
|
|
if tc.expectErr {
|
|
if err == nil || err.Error() != tc.expectedErrMsg {
|
|
t.Fatalf("expected error message `%s` but got `%v`", tc.expectedErrMsg, err)
|
|
}
|
|
return
|
|
}
|
|
|
|
// otherwise validate the mounts
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
assert.Equal(t, tc.expectedMounts, mounts, "mounts of container %+v", tc.container)
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestMakeBlockVolumes(t *testing.T) {
|
|
testKubelet := newTestKubelet(t, false /* controllerAttachDetachEnabled */)
|
|
defer testKubelet.Cleanup()
|
|
kubelet := testKubelet.kubelet
|
|
testCases := map[string]struct {
|
|
container v1.Container
|
|
podVolumes kubecontainer.VolumeMap
|
|
expectErr bool
|
|
expectedErrMsg string
|
|
expectedDevices []kubecontainer.DeviceInfo
|
|
}{
|
|
"valid volumeDevices in container": {
|
|
podVolumes: kubecontainer.VolumeMap{
|
|
"disk1": kubecontainer.VolumeInfo{BlockVolumeMapper: &stubBlockVolume{dirPath: "/dev/", volName: "sda"}},
|
|
"disk2": kubecontainer.VolumeInfo{BlockVolumeMapper: &stubBlockVolume{dirPath: "/dev/disk/by-path/", volName: "diskPath"}, ReadOnly: true},
|
|
"disk3": kubecontainer.VolumeInfo{BlockVolumeMapper: &stubBlockVolume{dirPath: "/dev/disk/by-id/", volName: "diskUuid"}},
|
|
"disk4": kubecontainer.VolumeInfo{BlockVolumeMapper: &stubBlockVolume{dirPath: "/var/lib/", volName: "rawdisk"}, ReadOnly: true},
|
|
},
|
|
container: v1.Container{
|
|
Name: "container1",
|
|
VolumeDevices: []v1.VolumeDevice{
|
|
{
|
|
DevicePath: "/dev/sda",
|
|
Name: "disk1",
|
|
},
|
|
{
|
|
DevicePath: "/dev/xvda",
|
|
Name: "disk2",
|
|
},
|
|
{
|
|
DevicePath: "/dev/xvdb",
|
|
Name: "disk3",
|
|
},
|
|
{
|
|
DevicePath: "/mnt/rawdisk",
|
|
Name: "disk4",
|
|
},
|
|
},
|
|
},
|
|
expectedDevices: []kubecontainer.DeviceInfo{
|
|
{
|
|
PathInContainer: "/dev/sda",
|
|
PathOnHost: "/dev/sda",
|
|
Permissions: "mrw",
|
|
},
|
|
{
|
|
PathInContainer: "/dev/xvda",
|
|
PathOnHost: "/dev/disk/by-path/diskPath",
|
|
Permissions: "r",
|
|
},
|
|
{
|
|
PathInContainer: "/dev/xvdb",
|
|
PathOnHost: "/dev/disk/by-id/diskUuid",
|
|
Permissions: "mrw",
|
|
},
|
|
{
|
|
PathInContainer: "/mnt/rawdisk",
|
|
PathOnHost: "/var/lib/rawdisk",
|
|
Permissions: "r",
|
|
},
|
|
},
|
|
expectErr: false,
|
|
},
|
|
"invalid absolute Path": {
|
|
podVolumes: kubecontainer.VolumeMap{
|
|
"disk": kubecontainer.VolumeInfo{BlockVolumeMapper: &stubBlockVolume{dirPath: "/dev/", volName: "sda"}},
|
|
},
|
|
container: v1.Container{
|
|
VolumeDevices: []v1.VolumeDevice{
|
|
{
|
|
DevicePath: "must/be/absolute",
|
|
Name: "disk",
|
|
},
|
|
},
|
|
},
|
|
expectErr: true,
|
|
expectedErrMsg: "error DevicePath `must/be/absolute` must be an absolute path",
|
|
},
|
|
"volume doesn't exist": {
|
|
podVolumes: kubecontainer.VolumeMap{},
|
|
container: v1.Container{
|
|
VolumeDevices: []v1.VolumeDevice{
|
|
{
|
|
DevicePath: "/dev/sdaa",
|
|
Name: "disk",
|
|
},
|
|
},
|
|
},
|
|
expectErr: true,
|
|
expectedErrMsg: "cannot find volume \"disk\" to pass into container \"\"",
|
|
},
|
|
"volume BlockVolumeMapper is nil": {
|
|
podVolumes: kubecontainer.VolumeMap{
|
|
"disk": kubecontainer.VolumeInfo{},
|
|
},
|
|
container: v1.Container{
|
|
VolumeDevices: []v1.VolumeDevice{
|
|
{
|
|
DevicePath: "/dev/sdzz",
|
|
Name: "disk",
|
|
},
|
|
},
|
|
},
|
|
expectErr: true,
|
|
expectedErrMsg: "cannot find volume \"disk\" to pass into container \"\"",
|
|
},
|
|
}
|
|
|
|
for name, tc := range testCases {
|
|
t.Run(name, func(t *testing.T) {
|
|
pod := v1.Pod{
|
|
Spec: v1.PodSpec{
|
|
HostNetwork: true,
|
|
},
|
|
}
|
|
blkutil := volumetest.NewBlockVolumePathHandler()
|
|
blkVolumes, err := kubelet.makeBlockVolumes(&pod, &tc.container, tc.podVolumes, blkutil)
|
|
// validate only the error if we expect an error
|
|
if tc.expectErr {
|
|
if err == nil || err.Error() != tc.expectedErrMsg {
|
|
t.Fatalf("expected error message `%s` but got `%v`", tc.expectedErrMsg, err)
|
|
}
|
|
return
|
|
}
|
|
// otherwise validate the devices
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
assert.Equal(t, tc.expectedDevices, blkVolumes, "devices of container %+v", tc.container)
|
|
})
|
|
}
|
|
}
|