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in_tree.go
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in_tree.go
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/*
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.
*/
/*
* This file defines various in-tree volume test drivers for TestSuites.
*
* There are two ways, how to prepare test drivers:
* 1) With containerized server (NFS, Ceph, Gluster, iSCSI, ...)
* It creates a server pod which defines one volume for the tests.
* These tests work only when privileged containers are allowed, exporting
* various filesystems (NFS, GlusterFS, ...) usually needs some mounting or
* other privileged magic in the server pod.
*
* Note that the server containers are for testing purposes only and should not
* be used in production.
*
* 2) With server or cloud provider outside of Kubernetes (GCE, AWS, Azure, ...)
* Appropriate server or cloud provider must exist somewhere outside
* the tested Kubernetes cluster. CreateVolume will create a new volume to be
* used in the TestSuites for inlineVolume or DynamicPV tests.
*/
package drivers
import (
"context"
"fmt"
"strconv"
"strings"
"time"
"github.com/onsi/ginkgo/v2"
v1 "k8s.io/api/core/v1"
rbacv1 "k8s.io/api/rbac/v1"
storagev1 "k8s.io/api/storage/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/apimachinery/pkg/runtime/schema"
"k8s.io/apimachinery/pkg/util/sets"
"k8s.io/apiserver/pkg/authentication/serviceaccount"
clientset "k8s.io/client-go/kubernetes"
"k8s.io/kubernetes/test/e2e/framework"
e2eauth "k8s.io/kubernetes/test/e2e/framework/auth"
e2enode "k8s.io/kubernetes/test/e2e/framework/node"
e2epod "k8s.io/kubernetes/test/e2e/framework/pod"
e2epv "k8s.io/kubernetes/test/e2e/framework/pv"
e2eskipper "k8s.io/kubernetes/test/e2e/framework/skipper"
e2evolume "k8s.io/kubernetes/test/e2e/framework/volume"
storageframework "k8s.io/kubernetes/test/e2e/storage/framework"
"k8s.io/kubernetes/test/e2e/storage/utils"
vspheretest "k8s.io/kubernetes/test/e2e/storage/vsphere"
imageutils "k8s.io/kubernetes/test/utils/image"
)
const (
// Template for iSCSI IQN.
iSCSIIQNTemplate = "iqn.2003-01.io.k8s:e2e.%s"
)
// NFS
type nfsDriver struct {
externalProvisionerPod *v1.Pod
externalPluginName string
driverInfo storageframework.DriverInfo
}
type nfsVolume struct {
serverHost string
serverPod *v1.Pod
f *framework.Framework
}
var _ storageframework.TestDriver = &nfsDriver{}
var _ storageframework.PreprovisionedVolumeTestDriver = &nfsDriver{}
var _ storageframework.InlineVolumeTestDriver = &nfsDriver{}
var _ storageframework.PreprovisionedPVTestDriver = &nfsDriver{}
var _ storageframework.DynamicPVTestDriver = &nfsDriver{}
// InitNFSDriver returns nfsDriver that implements TestDriver interface
func InitNFSDriver() storageframework.TestDriver {
return &nfsDriver{
driverInfo: storageframework.DriverInfo{
Name: "nfs",
InTreePluginName: "kubernetes.io/nfs",
MaxFileSize: storageframework.FileSizeLarge,
SupportedSizeRange: e2evolume.SizeRange{
Min: "1Gi",
},
SupportedFsType: sets.NewString(
"", // Default fsType
),
SupportedMountOption: sets.NewString("relatime"),
RequiredMountOption: sets.NewString("vers=4.1"),
Capabilities: map[storageframework.Capability]bool{
storageframework.CapPersistence: true,
storageframework.CapExec: true,
storageframework.CapRWX: true,
storageframework.CapMultiPODs: true,
},
},
}
}
func (n *nfsDriver) GetDriverInfo() *storageframework.DriverInfo {
return &n.driverInfo
}
func (n *nfsDriver) SkipUnsupportedTest(pattern storageframework.TestPattern) {
}
func (n *nfsDriver) GetVolumeSource(readOnly bool, fsType string, e2evolume storageframework.TestVolume) *v1.VolumeSource {
nv, ok := e2evolume.(*nfsVolume)
if !ok {
framework.Failf("Failed to cast test volume of type %T to the NFS test volume", e2evolume)
}
return &v1.VolumeSource{
NFS: &v1.NFSVolumeSource{
Server: nv.serverHost,
Path: "/",
ReadOnly: readOnly,
},
}
}
func (n *nfsDriver) GetPersistentVolumeSource(readOnly bool, fsType string, e2evolume storageframework.TestVolume) (*v1.PersistentVolumeSource, *v1.VolumeNodeAffinity) {
nv, ok := e2evolume.(*nfsVolume)
if !ok {
framework.Failf("Failed to cast test volume of type %T to the NFS test volume", e2evolume)
}
return &v1.PersistentVolumeSource{
NFS: &v1.NFSVolumeSource{
Server: nv.serverHost,
Path: "/",
ReadOnly: readOnly,
},
}, nil
}
func (n *nfsDriver) GetDynamicProvisionStorageClass(config *storageframework.PerTestConfig, fsType string) *storagev1.StorageClass {
provisioner := n.externalPluginName
parameters := map[string]string{"mountOptions": "vers=4.1"}
ns := config.Framework.Namespace.Name
return storageframework.GetStorageClass(provisioner, parameters, nil, ns)
}
func (n *nfsDriver) PrepareTest(f *framework.Framework) (*storageframework.PerTestConfig, func()) {
cs := f.ClientSet
ns := f.Namespace
n.externalPluginName = fmt.Sprintf("example.com/nfs-%s", ns.Name)
// TODO(mkimuram): cluster-admin gives too much right but system:persistent-volume-provisioner
// is not enough. We should create new clusterrole for testing.
err := e2eauth.BindClusterRole(cs.RbacV1(), "cluster-admin", ns.Name,
rbacv1.Subject{Kind: rbacv1.ServiceAccountKind, Namespace: ns.Name, Name: "default"})
framework.ExpectNoError(err)
err = e2eauth.WaitForAuthorizationUpdate(cs.AuthorizationV1(),
serviceaccount.MakeUsername(ns.Name, "default"),
"", "get", schema.GroupResource{Group: "storage.k8s.io", Resource: "storageclasses"}, true)
framework.ExpectNoError(err, "Failed to update authorization: %v", err)
ginkgo.By("creating an external dynamic provisioner pod")
n.externalProvisionerPod = utils.StartExternalProvisioner(cs, ns.Name, n.externalPluginName)
return &storageframework.PerTestConfig{
Driver: n,
Prefix: "nfs",
Framework: f,
}, func() {
framework.ExpectNoError(e2epod.DeletePodWithWait(cs, n.externalProvisionerPod))
clusterRoleBindingName := ns.Name + "--" + "cluster-admin"
cs.RbacV1().ClusterRoleBindings().Delete(context.TODO(), clusterRoleBindingName, *metav1.NewDeleteOptions(0))
}
}
func (n *nfsDriver) CreateVolume(config *storageframework.PerTestConfig, volType storageframework.TestVolType) storageframework.TestVolume {
f := config.Framework
cs := f.ClientSet
ns := f.Namespace
// NewNFSServer creates a pod for InlineVolume and PreprovisionedPV,
// and startExternalProvisioner creates a pod for DynamicPV.
// Therefore, we need a different PrepareTest logic for volType.
switch volType {
case storageframework.InlineVolume:
fallthrough
case storageframework.PreprovisionedPV:
c, serverPod, serverHost := e2evolume.NewNFSServer(cs, ns.Name, []string{})
config.ServerConfig = &c
return &nfsVolume{
serverHost: serverHost,
serverPod: serverPod,
f: f,
}
case storageframework.DynamicPV:
// Do nothing
default:
framework.Failf("Unsupported volType:%v is specified", volType)
}
return nil
}
func (v *nfsVolume) DeleteVolume() {
cleanUpVolumeServer(v.f, v.serverPod)
}
// iSCSI
// The iscsiadm utility and iscsi target kernel modules must be installed on all nodes.
type iSCSIDriver struct {
driverInfo storageframework.DriverInfo
}
type iSCSIVolume struct {
serverPod *v1.Pod
serverIP string
f *framework.Framework
iqn string
}
var _ storageframework.TestDriver = &iSCSIDriver{}
var _ storageframework.PreprovisionedVolumeTestDriver = &iSCSIDriver{}
var _ storageframework.InlineVolumeTestDriver = &iSCSIDriver{}
var _ storageframework.PreprovisionedPVTestDriver = &iSCSIDriver{}
// InitISCSIDriver returns iSCSIDriver that implements TestDriver interface
func InitISCSIDriver() storageframework.TestDriver {
return &iSCSIDriver{
driverInfo: storageframework.DriverInfo{
Name: "iscsi",
InTreePluginName: "kubernetes.io/iscsi",
FeatureTag: "[Feature:Volumes]",
MaxFileSize: storageframework.FileSizeMedium,
SupportedFsType: sets.NewString(
"", // Default fsType
"ext4",
),
TopologyKeys: []string{v1.LabelHostname},
Capabilities: map[storageframework.Capability]bool{
storageframework.CapPersistence: true,
storageframework.CapFsGroup: true,
storageframework.CapBlock: true,
storageframework.CapExec: true,
storageframework.CapMultiPODs: true,
storageframework.CapTopology: true,
},
},
}
}
func (i *iSCSIDriver) GetDriverInfo() *storageframework.DriverInfo {
return &i.driverInfo
}
func (i *iSCSIDriver) SkipUnsupportedTest(pattern storageframework.TestPattern) {
}
func (i *iSCSIDriver) GetVolumeSource(readOnly bool, fsType string, e2evolume storageframework.TestVolume) *v1.VolumeSource {
iv, ok := e2evolume.(*iSCSIVolume)
if !ok {
framework.Failf("failed to cast test volume of type %T to the iSCSI test volume", e2evolume)
}
volSource := v1.VolumeSource{
ISCSI: &v1.ISCSIVolumeSource{
TargetPortal: "127.0.0.1:3260",
IQN: iv.iqn,
Lun: 0,
ReadOnly: readOnly,
},
}
if fsType != "" {
volSource.ISCSI.FSType = fsType
}
return &volSource
}
func (i *iSCSIDriver) GetPersistentVolumeSource(readOnly bool, fsType string, e2evolume storageframework.TestVolume) (*v1.PersistentVolumeSource, *v1.VolumeNodeAffinity) {
iv, ok := e2evolume.(*iSCSIVolume)
if !ok {
framework.Failf("failed to cast test volume of type %T to the iSCSI test volume", e2evolume)
}
pvSource := v1.PersistentVolumeSource{
ISCSI: &v1.ISCSIPersistentVolumeSource{
TargetPortal: "127.0.0.1:3260",
IQN: iv.iqn,
Lun: 0,
ReadOnly: readOnly,
},
}
if fsType != "" {
pvSource.ISCSI.FSType = fsType
}
return &pvSource, nil
}
func (i *iSCSIDriver) PrepareTest(f *framework.Framework) (*storageframework.PerTestConfig, func()) {
return &storageframework.PerTestConfig{
Driver: i,
Prefix: "iscsi",
Framework: f,
}, func() {}
}
func (i *iSCSIDriver) CreateVolume(config *storageframework.PerTestConfig, volType storageframework.TestVolType) storageframework.TestVolume {
f := config.Framework
cs := f.ClientSet
ns := f.Namespace
c, serverPod, serverIP, iqn := newISCSIServer(cs, ns.Name)
config.ServerConfig = &c
config.ClientNodeSelection = c.ClientNodeSelection
return &iSCSIVolume{
serverPod: serverPod,
serverIP: serverIP,
iqn: iqn,
f: f,
}
}
// newISCSIServer is an iSCSI-specific wrapper for CreateStorageServer.
func newISCSIServer(cs clientset.Interface, namespace string) (config e2evolume.TestConfig, pod *v1.Pod, ip, iqn string) {
// Generate cluster-wide unique IQN
iqn = fmt.Sprintf(iSCSIIQNTemplate, namespace)
config = e2evolume.TestConfig{
Namespace: namespace,
Prefix: "iscsi",
ServerImage: imageutils.GetE2EImage(imageutils.VolumeISCSIServer),
ServerArgs: []string{iqn},
ServerVolumes: map[string]string{
// iSCSI container needs to insert modules from the host
"/lib/modules": "/lib/modules",
// iSCSI container needs to configure kernel
"/sys/kernel": "/sys/kernel",
// iSCSI source "block devices" must be available on the host
"/srv/iscsi": "/srv/iscsi",
},
ServerReadyMessage: "iscsi target started",
ServerHostNetwork: true,
}
pod, ip = e2evolume.CreateStorageServer(cs, config)
// Make sure the client runs on the same node as server so we don't need to open any firewalls.
config.ClientNodeSelection = e2epod.NodeSelection{Name: pod.Spec.NodeName}
return config, pod, ip, iqn
}
// newRBDServer is a CephRBD-specific wrapper for CreateStorageServer.
func newRBDServer(cs clientset.Interface, namespace string) (config e2evolume.TestConfig, pod *v1.Pod, secret *v1.Secret, ip string) {
config = e2evolume.TestConfig{
Namespace: namespace,
Prefix: "rbd",
ServerImage: imageutils.GetE2EImage(imageutils.VolumeRBDServer),
ServerPorts: []int{6789},
ServerVolumes: map[string]string{
"/lib/modules": "/lib/modules",
},
ServerReadyMessage: "Ceph is ready",
}
pod, ip = e2evolume.CreateStorageServer(cs, config)
// create secrets for the server
secret = &v1.Secret{
TypeMeta: metav1.TypeMeta{
Kind: "Secret",
APIVersion: "v1",
},
ObjectMeta: metav1.ObjectMeta{
Name: config.Prefix + "-secret",
},
Data: map[string][]byte{
// from test/images/volumes-tester/rbd/keyring
"key": []byte("AQDRrKNVbEevChAAEmRC+pW/KBVHxa0w/POILA=="),
},
Type: "kubernetes.io/rbd",
}
secret, err := cs.CoreV1().Secrets(config.Namespace).Create(context.TODO(), secret, metav1.CreateOptions{})
if err != nil {
framework.Failf("Failed to create secrets for Ceph RBD: %v", err)
}
return config, pod, secret, ip
}
func (v *iSCSIVolume) DeleteVolume() {
cleanUpVolumeServer(v.f, v.serverPod)
}
// Ceph RBD
type rbdDriver struct {
driverInfo storageframework.DriverInfo
}
type rbdVolume struct {
serverPod *v1.Pod
serverIP string
secret *v1.Secret
f *framework.Framework
}
var _ storageframework.TestDriver = &rbdDriver{}
var _ storageframework.PreprovisionedVolumeTestDriver = &rbdDriver{}
var _ storageframework.InlineVolumeTestDriver = &rbdDriver{}
var _ storageframework.PreprovisionedPVTestDriver = &rbdDriver{}
// InitRbdDriver returns rbdDriver that implements TestDriver interface
func InitRbdDriver() storageframework.TestDriver {
return &rbdDriver{
driverInfo: storageframework.DriverInfo{
Name: "rbd",
InTreePluginName: "kubernetes.io/rbd",
FeatureTag: "[Feature:Volumes][Serial]",
MaxFileSize: storageframework.FileSizeMedium,
SupportedSizeRange: e2evolume.SizeRange{
Min: "1Gi",
},
SupportedFsType: sets.NewString(
"", // Default fsType
"ext4",
),
Capabilities: map[storageframework.Capability]bool{
storageframework.CapPersistence: true,
storageframework.CapFsGroup: true,
storageframework.CapBlock: true,
storageframework.CapExec: true,
storageframework.CapMultiPODs: true,
},
},
}
}
func (r *rbdDriver) GetDriverInfo() *storageframework.DriverInfo {
return &r.driverInfo
}
func (r *rbdDriver) SkipUnsupportedTest(pattern storageframework.TestPattern) {
}
func (r *rbdDriver) GetVolumeSource(readOnly bool, fsType string, e2evolume storageframework.TestVolume) *v1.VolumeSource {
rv, ok := e2evolume.(*rbdVolume)
if !ok {
framework.Failf("failed to cast test volume of type %T to the RBD test volume", e2evolume)
}
volSource := v1.VolumeSource{
RBD: &v1.RBDVolumeSource{
CephMonitors: []string{rv.serverIP},
RBDPool: "rbd",
RBDImage: "foo",
RadosUser: "admin",
SecretRef: &v1.LocalObjectReference{
Name: rv.secret.Name,
},
ReadOnly: readOnly,
},
}
if fsType != "" {
volSource.RBD.FSType = fsType
}
return &volSource
}
func (r *rbdDriver) GetPersistentVolumeSource(readOnly bool, fsType string, e2evolume storageframework.TestVolume) (*v1.PersistentVolumeSource, *v1.VolumeNodeAffinity) {
rv, ok := e2evolume.(*rbdVolume)
if !ok {
framework.Failf("failed to cast test volume of type %T to the RBD test volume", e2evolume)
}
f := rv.f
ns := f.Namespace
pvSource := v1.PersistentVolumeSource{
RBD: &v1.RBDPersistentVolumeSource{
CephMonitors: []string{rv.serverIP},
RBDPool: "rbd",
RBDImage: "foo",
RadosUser: "admin",
SecretRef: &v1.SecretReference{
Name: rv.secret.Name,
Namespace: ns.Name,
},
ReadOnly: readOnly,
},
}
if fsType != "" {
pvSource.RBD.FSType = fsType
}
return &pvSource, nil
}
func (r *rbdDriver) PrepareTest(f *framework.Framework) (*storageframework.PerTestConfig, func()) {
return &storageframework.PerTestConfig{
Driver: r,
Prefix: "rbd",
Framework: f,
}, func() {}
}
func (r *rbdDriver) CreateVolume(config *storageframework.PerTestConfig, volType storageframework.TestVolType) storageframework.TestVolume {
f := config.Framework
cs := f.ClientSet
ns := f.Namespace
c, serverPod, secret, serverIP := newRBDServer(cs, ns.Name)
config.ServerConfig = &c
return &rbdVolume{
serverPod: serverPod,
serverIP: serverIP,
secret: secret,
f: f,
}
}
func (v *rbdVolume) DeleteVolume() {
cleanUpVolumeServerWithSecret(v.f, v.serverPod, v.secret)
}
// Ceph
type cephFSDriver struct {
driverInfo storageframework.DriverInfo
}
type cephVolume struct {
serverPod *v1.Pod
serverIP string
secret *v1.Secret
f *framework.Framework
}
var _ storageframework.TestDriver = &cephFSDriver{}
var _ storageframework.PreprovisionedVolumeTestDriver = &cephFSDriver{}
var _ storageframework.InlineVolumeTestDriver = &cephFSDriver{}
var _ storageframework.PreprovisionedPVTestDriver = &cephFSDriver{}
// InitCephFSDriver returns cephFSDriver that implements TestDriver interface
func InitCephFSDriver() storageframework.TestDriver {
return &cephFSDriver{
driverInfo: storageframework.DriverInfo{
Name: "ceph",
InTreePluginName: "kubernetes.io/cephfs",
FeatureTag: "[Feature:Volumes][Serial]",
MaxFileSize: storageframework.FileSizeMedium,
SupportedSizeRange: e2evolume.SizeRange{
Min: "1Gi",
},
SupportedFsType: sets.NewString(
"", // Default fsType
),
Capabilities: map[storageframework.Capability]bool{
storageframework.CapPersistence: true,
storageframework.CapExec: true,
storageframework.CapRWX: true,
storageframework.CapMultiPODs: true,
},
},
}
}
func (c *cephFSDriver) GetDriverInfo() *storageframework.DriverInfo {
return &c.driverInfo
}
func (c *cephFSDriver) SkipUnsupportedTest(pattern storageframework.TestPattern) {
}
func (c *cephFSDriver) GetVolumeSource(readOnly bool, fsType string, e2evolume storageframework.TestVolume) *v1.VolumeSource {
cv, ok := e2evolume.(*cephVolume)
if !ok {
framework.Failf("Failed to cast test volume of type %T to the Ceph test volume", e2evolume)
}
return &v1.VolumeSource{
CephFS: &v1.CephFSVolumeSource{
Monitors: []string{cv.serverIP + ":6789"},
User: "kube",
SecretRef: &v1.LocalObjectReference{
Name: cv.secret.Name,
},
ReadOnly: readOnly,
},
}
}
func (c *cephFSDriver) GetPersistentVolumeSource(readOnly bool, fsType string, e2evolume storageframework.TestVolume) (*v1.PersistentVolumeSource, *v1.VolumeNodeAffinity) {
cv, ok := e2evolume.(*cephVolume)
if !ok {
framework.Failf("Failed to cast test volume of type %T to the Ceph test volume", e2evolume)
}
ns := cv.f.Namespace
return &v1.PersistentVolumeSource{
CephFS: &v1.CephFSPersistentVolumeSource{
Monitors: []string{cv.serverIP + ":6789"},
User: "kube",
SecretRef: &v1.SecretReference{
Name: cv.secret.Name,
Namespace: ns.Name,
},
ReadOnly: readOnly,
},
}, nil
}
func (c *cephFSDriver) PrepareTest(f *framework.Framework) (*storageframework.PerTestConfig, func()) {
return &storageframework.PerTestConfig{
Driver: c,
Prefix: "cephfs",
Framework: f,
}, func() {}
}
func (c *cephFSDriver) CreateVolume(config *storageframework.PerTestConfig, volType storageframework.TestVolType) storageframework.TestVolume {
f := config.Framework
cs := f.ClientSet
ns := f.Namespace
cfg, serverPod, secret, serverIP := newRBDServer(cs, ns.Name)
config.ServerConfig = &cfg
return &cephVolume{
serverPod: serverPod,
serverIP: serverIP,
secret: secret,
f: f,
}
}
func (v *cephVolume) DeleteVolume() {
cleanUpVolumeServerWithSecret(v.f, v.serverPod, v.secret)
}
// Hostpath
type hostPathDriver struct {
driverInfo storageframework.DriverInfo
}
var _ storageframework.TestDriver = &hostPathDriver{}
var _ storageframework.PreprovisionedVolumeTestDriver = &hostPathDriver{}
var _ storageframework.InlineVolumeTestDriver = &hostPathDriver{}
// InitHostPathDriver returns hostPathDriver that implements TestDriver interface
func InitHostPathDriver() storageframework.TestDriver {
return &hostPathDriver{
driverInfo: storageframework.DriverInfo{
Name: "hostPath",
InTreePluginName: "kubernetes.io/host-path",
MaxFileSize: storageframework.FileSizeMedium,
SupportedFsType: sets.NewString(
"", // Default fsType
),
TopologyKeys: []string{v1.LabelHostname},
Capabilities: map[storageframework.Capability]bool{
storageframework.CapPersistence: true,
storageframework.CapMultiPODs: true,
storageframework.CapSingleNodeVolume: true,
storageframework.CapTopology: true,
},
},
}
}
func (h *hostPathDriver) GetDriverInfo() *storageframework.DriverInfo {
return &h.driverInfo
}
func (h *hostPathDriver) SkipUnsupportedTest(pattern storageframework.TestPattern) {
}
func (h *hostPathDriver) GetVolumeSource(readOnly bool, fsType string, e2evolume storageframework.TestVolume) *v1.VolumeSource {
// hostPath doesn't support readOnly volume
if readOnly {
return nil
}
return &v1.VolumeSource{
HostPath: &v1.HostPathVolumeSource{
Path: "/tmp",
},
}
}
func (h *hostPathDriver) PrepareTest(f *framework.Framework) (*storageframework.PerTestConfig, func()) {
return &storageframework.PerTestConfig{
Driver: h,
Prefix: "hostpath",
Framework: f,
}, func() {}
}
func (h *hostPathDriver) CreateVolume(config *storageframework.PerTestConfig, volType storageframework.TestVolType) storageframework.TestVolume {
f := config.Framework
cs := f.ClientSet
// pods should be scheduled on the node
node, err := e2enode.GetRandomReadySchedulableNode(cs)
framework.ExpectNoError(err)
config.ClientNodeSelection = e2epod.NodeSelection{Name: node.Name}
return nil
}
// HostPathSymlink
type hostPathSymlinkDriver struct {
driverInfo storageframework.DriverInfo
}
type hostPathSymlinkVolume struct {
targetPath string
sourcePath string
prepPod *v1.Pod
f *framework.Framework
}
var _ storageframework.TestDriver = &hostPathSymlinkDriver{}
var _ storageframework.PreprovisionedVolumeTestDriver = &hostPathSymlinkDriver{}
var _ storageframework.InlineVolumeTestDriver = &hostPathSymlinkDriver{}
// InitHostPathSymlinkDriver returns hostPathSymlinkDriver that implements TestDriver interface
func InitHostPathSymlinkDriver() storageframework.TestDriver {
return &hostPathSymlinkDriver{
driverInfo: storageframework.DriverInfo{
Name: "hostPathSymlink",
InTreePluginName: "kubernetes.io/host-path",
MaxFileSize: storageframework.FileSizeMedium,
SupportedFsType: sets.NewString(
"", // Default fsType
),
TopologyKeys: []string{v1.LabelHostname},
Capabilities: map[storageframework.Capability]bool{
storageframework.CapPersistence: true,
storageframework.CapMultiPODs: true,
storageframework.CapSingleNodeVolume: true,
storageframework.CapTopology: true,
},
},
}
}
func (h *hostPathSymlinkDriver) GetDriverInfo() *storageframework.DriverInfo {
return &h.driverInfo
}
func (h *hostPathSymlinkDriver) SkipUnsupportedTest(pattern storageframework.TestPattern) {
}
func (h *hostPathSymlinkDriver) GetVolumeSource(readOnly bool, fsType string, e2evolume storageframework.TestVolume) *v1.VolumeSource {
hv, ok := e2evolume.(*hostPathSymlinkVolume)
if !ok {
framework.Failf("Failed to cast test volume of type %T to the Hostpath Symlink test volume", e2evolume)
}
// hostPathSymlink doesn't support readOnly volume
if readOnly {
return nil
}
return &v1.VolumeSource{
HostPath: &v1.HostPathVolumeSource{
Path: hv.targetPath,
},
}
}
func (h *hostPathSymlinkDriver) PrepareTest(f *framework.Framework) (*storageframework.PerTestConfig, func()) {
return &storageframework.PerTestConfig{
Driver: h,
Prefix: "hostpathsymlink",
Framework: f,
}, func() {}
}
func (h *hostPathSymlinkDriver) CreateVolume(config *storageframework.PerTestConfig, volType storageframework.TestVolType) storageframework.TestVolume {
f := config.Framework
cs := f.ClientSet
sourcePath := fmt.Sprintf("/tmp/%v", f.Namespace.Name)
targetPath := fmt.Sprintf("/tmp/%v-link", f.Namespace.Name)
volumeName := "test-volume"
// pods should be scheduled on the node
node, err := e2enode.GetRandomReadySchedulableNode(cs)
framework.ExpectNoError(err)
config.ClientNodeSelection = e2epod.NodeSelection{Name: node.Name}
cmd := fmt.Sprintf("mkdir %v -m 777 && ln -s %v %v", sourcePath, sourcePath, targetPath)
privileged := true
// Launch pod to initialize hostPath directory and symlink
prepPod := &v1.Pod{
ObjectMeta: metav1.ObjectMeta{
Name: fmt.Sprintf("hostpath-symlink-prep-%s", f.Namespace.Name),
},
Spec: v1.PodSpec{
Containers: []v1.Container{
{
Name: fmt.Sprintf("init-volume-%s", f.Namespace.Name),
Image: imageutils.GetE2EImage(imageutils.BusyBox),
Command: []string{"/bin/sh", "-ec", cmd},
VolumeMounts: []v1.VolumeMount{
{
Name: volumeName,
MountPath: "/tmp",
},
},
SecurityContext: &v1.SecurityContext{
Privileged: &privileged,
},
},
},
RestartPolicy: v1.RestartPolicyNever,
Volumes: []v1.Volume{
{
Name: volumeName,
VolumeSource: v1.VolumeSource{
HostPath: &v1.HostPathVolumeSource{
Path: "/tmp",
},
},
},
},
NodeName: node.Name,
},
}
// h.prepPod will be reused in cleanupDriver.
pod, err := f.ClientSet.CoreV1().Pods(f.Namespace.Name).Create(context.TODO(), prepPod, metav1.CreateOptions{})
framework.ExpectNoError(err, "while creating hostPath init pod")
err = e2epod.WaitForPodSuccessInNamespaceTimeout(f.ClientSet, pod.Name, pod.Namespace, f.Timeouts.PodStart)
framework.ExpectNoError(err, "while waiting for hostPath init pod to succeed")
err = e2epod.DeletePodWithWait(f.ClientSet, pod)
framework.ExpectNoError(err, "while deleting hostPath init pod")
return &hostPathSymlinkVolume{
sourcePath: sourcePath,
targetPath: targetPath,
prepPod: prepPod,
f: f,
}
}
func (v *hostPathSymlinkVolume) DeleteVolume() {
f := v.f
cmd := fmt.Sprintf("rm -rf %v&& rm -rf %v", v.targetPath, v.sourcePath)
v.prepPod.Spec.Containers[0].Command = []string{"/bin/sh", "-ec", cmd}
pod, err := f.ClientSet.CoreV1().Pods(f.Namespace.Name).Create(context.TODO(), v.prepPod, metav1.CreateOptions{})
framework.ExpectNoError(err, "while creating hostPath teardown pod")
err = e2epod.WaitForPodSuccessInNamespaceTimeout(f.ClientSet, pod.Name, pod.Namespace, f.Timeouts.PodStart)
framework.ExpectNoError(err, "while waiting for hostPath teardown pod to succeed")
err = e2epod.DeletePodWithWait(f.ClientSet, pod)
framework.ExpectNoError(err, "while deleting hostPath teardown pod")
}
// emptydir
type emptydirDriver struct {
driverInfo storageframework.DriverInfo
}
var _ storageframework.TestDriver = &emptydirDriver{}
var _ storageframework.PreprovisionedVolumeTestDriver = &emptydirDriver{}
var _ storageframework.InlineVolumeTestDriver = &emptydirDriver{}
// InitEmptydirDriver returns emptydirDriver that implements TestDriver interface
func InitEmptydirDriver() storageframework.TestDriver {
return &emptydirDriver{
driverInfo: storageframework.DriverInfo{
Name: "emptydir",
InTreePluginName: "kubernetes.io/empty-dir",
MaxFileSize: storageframework.FileSizeMedium,
SupportedFsType: sets.NewString(
"", // Default fsType
),
Capabilities: map[storageframework.Capability]bool{
storageframework.CapExec: true,
storageframework.CapSingleNodeVolume: true,
},
},
}
}
func (e *emptydirDriver) GetDriverInfo() *storageframework.DriverInfo {
return &e.driverInfo
}
func (e *emptydirDriver) SkipUnsupportedTest(pattern storageframework.TestPattern) {
}
func (e *emptydirDriver) GetVolumeSource(readOnly bool, fsType string, e2evolume storageframework.TestVolume) *v1.VolumeSource {
// emptydir doesn't support readOnly volume
if readOnly {
return nil
}
return &v1.VolumeSource{
EmptyDir: &v1.EmptyDirVolumeSource{},
}
}
func (e *emptydirDriver) CreateVolume(config *storageframework.PerTestConfig, volType storageframework.TestVolType) storageframework.TestVolume {
return nil
}
func (e *emptydirDriver) PrepareTest(f *framework.Framework) (*storageframework.PerTestConfig, func()) {
return &storageframework.PerTestConfig{
Driver: e,
Prefix: "emptydir",
Framework: f,
}, func() {}
}
// GCE
type gcePdDriver struct {
driverInfo storageframework.DriverInfo
}
type gcePdVolume struct {
volumeName string
}
var _ storageframework.TestDriver = &gcePdDriver{}
var _ storageframework.PreprovisionedVolumeTestDriver = &gcePdDriver{}
var _ storageframework.InlineVolumeTestDriver = &gcePdDriver{}
var _ storageframework.PreprovisionedPVTestDriver = &gcePdDriver{}
var _ storageframework.DynamicPVTestDriver = &gcePdDriver{}
// InitGcePdDriver returns gcePdDriver that implements TestDriver interface
func InitGcePdDriver() storageframework.TestDriver {
supportedTypes := sets.NewString(
"", // Default fsType
"ext2",
"ext3",
"ext4",
"xfs",
)
return &gcePdDriver{
driverInfo: storageframework.DriverInfo{
Name: "gcepd",
InTreePluginName: "kubernetes.io/gce-pd",
MaxFileSize: storageframework.FileSizeMedium,
SupportedSizeRange: e2evolume.SizeRange{
Min: "1Gi",
},
SupportedFsType: supportedTypes,
SupportedMountOption: sets.NewString("debug", "nouid32"),
TopologyKeys: []string{v1.LabelTopologyZone},
Capabilities: map[storageframework.Capability]bool{
storageframework.CapPersistence: true,
storageframework.CapFsGroup: true,
storageframework.CapBlock: true,
storageframework.CapExec: true,
storageframework.CapMultiPODs: true,
storageframework.CapControllerExpansion: true,
storageframework.CapOfflineExpansion: true,
storageframework.CapOnlineExpansion: true,
storageframework.CapNodeExpansion: true,
// GCE supports volume limits, but the test creates large
// number of volumes and times out test suites.
storageframework.CapVolumeLimits: false,
storageframework.CapTopology: true,
},
},
}
}
// InitWindowsGcePdDriver returns gcePdDriver running on Windows cluster that implements TestDriver interface
// In current test structure, it first initialize the driver and then set up
// the new framework, so we cannot get the correct OS here and select which file system is supported.
// So here uses a separate Windows in-tree gce pd driver
func InitWindowsGcePdDriver() storageframework.TestDriver {
supportedTypes := sets.NewString(
"ntfs",
)
return &gcePdDriver{
driverInfo: storageframework.DriverInfo{
Name: "windows-gcepd",
InTreePluginName: "kubernetes.io/gce-pd",
MaxFileSize: storageframework.FileSizeMedium,
SupportedSizeRange: e2evolume.SizeRange{
Min: "1Gi",
},
SupportedFsType: supportedTypes,
TopologyKeys: []string{v1.LabelZoneFailureDomain},
Capabilities: map[storageframework.Capability]bool{
storageframework.CapControllerExpansion: false,
storageframework.CapPersistence: true,
storageframework.CapExec: true,
storageframework.CapMultiPODs: true,
// GCE supports volume limits, but the test creates large
// number of volumes and times out test suites.