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Merge pull request #39 from gman0/fix-cephfs-provisioner

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Fix broken cephfs provisioner
This commit is contained in:
Huamin Chen 2018-06-12 14:14:31 -04:00 committed by GitHub
commit f5af7d0a94
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9 changed files with 86 additions and 50 deletions
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2
deploy/cephfs/kubernetes/csi-provisioner.yaml
View File

@ -78,7 +78,7 @@ spec:
serviceAccount: csi-provisioner
containers:
- name: csi-provisioner
image: quay.io/k8scsi/csi-provisioner:v0.2.0
image: quay.io/k8scsi/csi-provisioner:v0.2.1
args:
- "--provisioner=csi-cephfsplugin"
- "--csi-address=$(ADDRESS)"

21
pkg/cephfs/cephconf.go
View File

@ -52,8 +52,8 @@ const cephSecret = `{{.Key}}`
const (
cephConfigRoot = "/etc/ceph"
cephConfigFileNameFmt = "ceph.share.%s.conf"
cephKeyringFileNameFmt = "ceph.client.%s.keyring"
cephSecretFileNameFmt = "ceph.client.%s.secret"
cephKeyringFileNameFmt = "ceph.share.%s.client.%s.keyring"
cephSecretFileNameFmt = "ceph.share.%s.client.%s.secret"
)
var (
@ -115,34 +115,37 @@ type cephKeyringData struct {
UserId, Key string
RootPath string
Pool, Namespace string
VolumeUuid string
}
func (d *cephKeyringData) writeToFile() error {
return writeCephTemplate(fmt.Sprintf(cephKeyringFileNameFmt, d.UserId), 0600, cephKeyringTempl, d)
return writeCephTemplate(fmt.Sprintf(cephKeyringFileNameFmt, d.VolumeUuid, d.UserId), 0600, cephKeyringTempl, d)
}
type cephFullCapsKeyringData struct {
UserId, Key string
VolumeUuid string
}
func (d *cephFullCapsKeyringData) writeToFile() error {
return writeCephTemplate(fmt.Sprintf(cephKeyringFileNameFmt, d.UserId), 0600, cephFullCapsKeyringTempl, d)
return writeCephTemplate(fmt.Sprintf(cephKeyringFileNameFmt, d.VolumeUuid, d.UserId), 0600, cephFullCapsKeyringTempl, d)
}
type cephSecretData struct {
UserId, Key string
VolumeUuid string
}
func (d *cephSecretData) writeToFile() error {
return writeCephTemplate(fmt.Sprintf(cephSecretFileNameFmt, d.UserId), 0600, cephSecretTempl, d)
return writeCephTemplate(fmt.Sprintf(cephSecretFileNameFmt, d.VolumeUuid, d.UserId), 0600, cephSecretTempl, d)
}
func getCephSecretPath(userId string) string {
return path.Join(cephConfigRoot, fmt.Sprintf(cephSecretFileNameFmt, userId))
func getCephSecretPath(volUuid, userId string) string {
return path.Join(cephConfigRoot, fmt.Sprintf(cephSecretFileNameFmt, volUuid, userId))
}
func getCephKeyringPath(userId string) string {
return path.Join(cephConfigRoot, fmt.Sprintf(cephKeyringFileNameFmt, userId))
func getCephKeyringPath(volUuid, userId string) string {
return path.Join(cephConfigRoot, fmt.Sprintf(cephKeyringFileNameFmt, volUuid, userId))
}
func getCephConfPath(volUuid string) string {

31
pkg/cephfs/cephuser.go
View File

@ -57,26 +57,16 @@ func getCephUser(userId string) (*cephEntity, error) {
return &ents[0], nil
}
func (e *cephEntity) create() error {
return execCommandJson(e, "ceph", "auth", "get-or-create", e.Entity, "mds", e.Caps.Mds, "osd", e.Caps.Osd, "mon", e.Caps.Mon)
}
func createCephUser(volOptions *volumeOptions, volUuid string, readOnly bool) (*cephEntity, error) {
access := "rw"
if readOnly {
access = "r"
}
func createCephUser(volOptions *volumeOptions, cr *credentials, volUuid string) (*cephEntity, error) {
caps := cephEntityCaps{
Mds: fmt.Sprintf("allow %s path=%s", access, getVolumeRootPath_ceph(volUuid)),
Mds: fmt.Sprintf("allow rw path=%s", getVolumeRootPath_ceph(volUuid)),
Mon: "allow r",
Osd: fmt.Sprintf("allow %s pool=%s namespace=%s", access, volOptions.Pool, getVolumeNamespace(volUuid)),
Osd: fmt.Sprintf("allow rw pool=%s namespace=%s", volOptions.Pool, getVolumeNamespace(volUuid)),
}
var ents []cephEntity
args := [...]string{
"auth", "-f", "json",
"auth", "-f", "json", "-c", getCephConfPath(volUuid), "-n", cephEntityClientPrefix + cr.id,
"get-or-create", cephEntityClientPrefix + getCephUserName(volUuid),
"mds", caps.Mds,
"mon", caps.Mon,
@ -90,15 +80,20 @@ func createCephUser(volOptions *volumeOptions, volUuid string, readOnly bool) (*
return &ents[0], nil
}
func deleteCephUser(volUuid string) error {
func deleteCephUser(cr *credentials, volUuid string) error {
userId := getCephUserName(volUuid)
if err := execCommandAndValidate("ceph", "auth", "rm", cephEntityClientPrefix+userId); err != nil {
args := [...]string{
"-c", getCephConfPath(volUuid), "-n", cephEntityClientPrefix + cr.id,
"auth", "rm", cephEntityClientPrefix + userId,
}
if err := execCommandAndValidate("ceph", args[:]...); err != nil {
return err
}
os.Remove(getCephKeyringPath(userId))
os.Remove(getCephSecretPath(userId))
os.Remove(getCephKeyringPath(volUuid, userId))
os.Remove(getCephSecretPath(volUuid, userId))
return nil
}

18
pkg/cephfs/controllerserver.go
View File

@ -77,6 +77,12 @@ func (cs *controllerServer) CreateVolume(ctx context.Context, req *csi.CreateVol
volId := newVolumeIdentifier(volOptions, req)
conf := cephConfigData{Monitors: volOptions.Monitors, VolumeUuid: volId.uuid}
if err = conf.writeToFile(); err != nil {
glog.Errorf("failed to write ceph config file to %s: %v", getCephConfPath(volId.uuid), err)
return nil, status.Error(codes.Internal, err.Error())
}
// Create a volume in case the user didn't provide one
if volOptions.ProvisionVolume {
@ -87,7 +93,7 @@ func (cs *controllerServer) CreateVolume(ctx context.Context, req *csi.CreateVol
return nil, status.Error(codes.InvalidArgument, err.Error())
}
if err = storeCephAdminCredentials(cr); err != nil {
if err = storeCephAdminCredentials(volId.uuid, cr); err != nil {
glog.Errorf("failed to store admin credentials for '%s': %v", cr.id, err)
return nil, status.Error(codes.Internal, err.Error())
}
@ -164,16 +170,16 @@ func (cs *controllerServer) DeleteVolume(ctx context.Context, req *csi.DeleteVol
if ent.VolOptions.ProvisionVolume {
// The user is no longer needed
if err := deleteCephUser(volUuid); err != nil {
if err := deleteCephUser(cr, volUuid); err != nil {
glog.Warningf("failed to delete ceph user '%s': %v", cr.id, err)
}
userId := getCephUserName(volUuid)
os.Remove(getCephKeyringPath(userId))
os.Remove(getCephSecretPath(userId))
os.Remove(getCephKeyringPath(volUuid, userId))
os.Remove(getCephSecretPath(volUuid, userId))
} else {
os.Remove(getCephKeyringPath(cr.id))
os.Remove(getCephSecretPath(cr.id))
os.Remove(getCephKeyringPath(volUuid, cr.id))
os.Remove(getCephSecretPath(volUuid, cr.id))
}
if err := volCache.erase(volUuid); err != nil {

17
pkg/cephfs/identityserver.go
View File

@ -17,9 +17,26 @@ limitations under the License.
package cephfs
import (
"context"
"github.com/container-storage-interface/spec/lib/go/csi/v0"
"github.com/kubernetes-csi/drivers/pkg/csi-common"
)
type identityServer struct {
*csicommon.DefaultIdentityServer
}
func (is *identityServer) GetPluginCapabilities(ctx context.Context, req *csi.GetPluginCapabilitiesRequest) (*csi.GetPluginCapabilitiesResponse, error) {
return &csi.GetPluginCapabilitiesResponse{
Capabilities: []*csi.PluginCapability{
{
Type: &csi.PluginCapability_Service_{
Service: &csi.PluginCapability_Service{
Type: csi.PluginCapability_Service_CONTROLLER_SERVICE,
},
},
},
},
}, nil
}

15
pkg/cephfs/nodeserver.go
View File

@ -71,7 +71,20 @@ func handleUser(volOptions *volumeOptions, volUuid string, req *csi.NodePublishV
if volOptions.ProvisionVolume {
// The volume is provisioned dynamically, create a dedicated user
if ent, err := createCephUser(volOptions, volUuid, req.GetReadonly()); err != nil {
// First, store admin credentials - those are needed for creating a user
adminCr, err := getAdminCredentials(req.GetNodePublishSecrets())
if err != nil {
return nil, err
}
if err = storeCephAdminCredentials(volUuid, adminCr); err != nil {
return nil, err
}
// Then create the user
if ent, err := createCephUser(volOptions, adminCr, volUuid); err != nil {
return nil, err
} else {
cr.id = ent.Entity[len(cephEntityClientPrefix):]

20
pkg/cephfs/util.go
View File

@ -79,9 +79,10 @@ func tryLock(id string, mtx keymutex.KeyMutex, name string) error {
func storeCephUserCredentials(volUuid string, cr *credentials, volOptions *volumeOptions) error {
keyringData := cephKeyringData{
UserId: cr.id,
Key: cr.key,
RootPath: volOptions.RootPath,
UserId: cr.id,
Key: cr.key,
RootPath: volOptions.RootPath,
VolumeUuid: volUuid,
}
if volOptions.ProvisionVolume {
@ -89,21 +90,22 @@ func storeCephUserCredentials(volUuid string, cr *credentials, volOptions *volum
keyringData.Namespace = getVolumeNamespace(volUuid)
}
return storeCephCredentials(cr, &keyringData)
return storeCephCredentials(volUuid, cr, &keyringData)
}
func storeCephAdminCredentials(cr *credentials) error {
return storeCephCredentials(cr, &cephFullCapsKeyringData{UserId: cr.id, Key: cr.key})
func storeCephAdminCredentials(volUuid string, cr *credentials) error {
return storeCephCredentials(volUuid, cr, &cephFullCapsKeyringData{UserId: cr.id, Key: cr.key, VolumeUuid: volUuid})
}
func storeCephCredentials(cr *credentials, keyringData cephConfigWriter) error {
func storeCephCredentials(volUuid string, cr *credentials, keyringData cephConfigWriter) error {
if err := keyringData.writeToFile(); err != nil {
return err
}
secret := cephSecretData{
UserId: cr.id,
Key: cr.key,
UserId: cr.id,
Key: cr.key,
VolumeUuid: volUuid,
}
if err := secret.writeToFile(); err != nil {

4
pkg/cephfs/volume.go
View File

@ -88,7 +88,7 @@ func createVolume(volOptions *volumeOptions, adminCr *credentials, volUuid strin
// Access to cephfs's / is required
volOptions.RootPath = "/"
if err := mountKernel(cephRoot, adminCr, volOptions); err != nil {
if err := mountKernel(cephRoot, adminCr, volOptions, volUuid); err != nil {
return fmt.Errorf("error mounting ceph root: %v", err)
}
@ -144,7 +144,7 @@ func purgeVolume(volId string, cr *credentials, volOptions *volumeOptions) error
return err
}
if err := mountKernel(volRoot, cr, volOptions); err != nil {
if err := mountKernel(volRoot, cr, volOptions, volUuid); err != nil {
return err
}

8
pkg/cephfs/volumemounter.go
View File

@ -38,7 +38,7 @@ func mountFuse(mountPoint string, cr *credentials, volOptions *volumeOptions, vo
mountPoint,
"-c", getCephConfPath(volUuid),
"-n", cephEntityClientPrefix + cr.id,
"--keyring", getCephKeyringPath(cr.id),
"--keyring", getCephKeyringPath(volUuid, cr.id),
"-r", volOptions.RootPath,
}
@ -74,7 +74,7 @@ func (m *fuseMounter) mount(mountPoint string, cr *credentials, volOptions *volu
type kernelMounter struct{}
func mountKernel(mountPoint string, cr *credentials, volOptions *volumeOptions) error {
func mountKernel(mountPoint string, cr *credentials, volOptions *volumeOptions, volUuid string) error {
if err := execCommandAndValidate("modprobe", "ceph"); err != nil {
return err
}
@ -84,7 +84,7 @@ func mountKernel(mountPoint string, cr *credentials, volOptions *volumeOptions)
fmt.Sprintf("%s:%s", volOptions.Monitors, volOptions.RootPath),
mountPoint,
"-o",
fmt.Sprintf("name=%s,secretfile=%s", cr.id, getCephSecretPath(cr.id)),
fmt.Sprintf("name=%s,secretfile=%s", cr.id, getCephSecretPath(volUuid, cr.id)),
)
}
@ -99,7 +99,7 @@ func (m *kernelMounter) mount(mountPoint string, cr *credentials, volOptions *vo
return err
}
if err := mountKernel(localVolRoot, cr, volOptions); err != nil {
if err := mountKernel(localVolRoot, cr, volOptions, volUuid); err != nil {
return err
}