mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-09-19 15:09:56 +00:00
nfs: add basic provisioner with create/delete procedures
These NFS Controller and Identity servers are the base for the new provisioner. The functionality is currently extremely limited, follow-up PRs will implement various CSI procedures. CreateVolume is implemented with the bare minimum. This makes it possible to create a volume, and mount it with the kubernetes-csi/csi-driver-nfs NodePlugin. DeleteVolume unexports the volume from the Ceph managed NFS-Ganesha service. In case the Ceph cluster provides multiple NFS-Ganesha deployments, things might not work as expected. This is going to be addressed in follow-up improvements. Lots of TODO comments need to be resolved before this can be declared "production ready". Unit- and e2e-tests are missing as well. Signed-off-by: Niels de Vos <ndevos@redhat.com>
This commit is contained in:
Niels de Vos
mergify[bot]
parent
87f87141be
commit
6d83df9cc9
150
internal/nfs/controller/controllerserver.go
Normal file
150
internal/nfs/controller/controllerserver.go
Normal file
@ -0,0 +1,150 @@
|
||||
/*
|
||||
Copyright 2022 The Ceph-CSI 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 controller
|
||||
|
||||
import (
|
||||
"context"
|
||||
"fmt"
|
||||
|
||||
"github.com/ceph/ceph-csi/internal/cephfs"
|
||||
"github.com/ceph/ceph-csi/internal/cephfs/store"
|
||||
fsutil "github.com/ceph/ceph-csi/internal/cephfs/util"
|
||||
csicommon "github.com/ceph/ceph-csi/internal/csi-common"
|
||||
"github.com/ceph/ceph-csi/internal/journal"
|
||||
"github.com/ceph/ceph-csi/internal/util"
|
||||
"github.com/ceph/ceph-csi/internal/util/log"
|
||||
|
||||
"github.com/container-storage-interface/spec/lib/go/csi"
|
||||
"google.golang.org/grpc/codes"
|
||||
"google.golang.org/grpc/status"
|
||||
)
|
||||
|
||||
// Server struct of CEPH CSI driver with supported methods of CSI controller
|
||||
// server spec.
|
||||
type Server struct {
|
||||
csi.UnimplementedControllerServer
|
||||
|
||||
// backendServer handles the CephFS requests
|
||||
backendServer *cephfs.ControllerServer
|
||||
}
|
||||
|
||||
// NewControllerServer initialize a controller server for ceph CSI driver.
|
||||
func NewControllerServer(d *csicommon.CSIDriver) *Server {
|
||||
// global instance of the volume journal, yuck
|
||||
store.VolJournal = journal.NewCSIVolumeJournalWithNamespace(cephfs.CSIInstanceID, fsutil.RadosNamespace)
|
||||
|
||||
return &Server{
|
||||
backendServer: cephfs.NewControllerServer(d),
|
||||
}
|
||||
}
|
||||
|
||||
// ControllerGetCapabilities uses the CephFS backendServer to return the
|
||||
// capabilities that were set in the Driver.Run() function.
|
||||
func (cs *Server) ControllerGetCapabilities(
|
||||
ctx context.Context,
|
||||
req *csi.ControllerGetCapabilitiesRequest) (*csi.ControllerGetCapabilitiesResponse, error) {
|
||||
return cs.backendServer.ControllerGetCapabilities(ctx, req)
|
||||
}
|
||||
|
||||
// ValidateVolumeCapabilities checks whether the volume capabilities requested
|
||||
// are supported.
|
||||
func (cs *Server) ValidateVolumeCapabilities(
|
||||
ctx context.Context,
|
||||
req *csi.ValidateVolumeCapabilitiesRequest) (*csi.ValidateVolumeCapabilitiesResponse, error) {
|
||||
return cs.backendServer.ValidateVolumeCapabilities(ctx, req)
|
||||
}
|
||||
|
||||
// CreateVolume creates the backing subvolume and on any error cleans up any
|
||||
// created entities.
|
||||
func (cs *Server) CreateVolume(
|
||||
ctx context.Context,
|
||||
req *csi.CreateVolumeRequest) (*csi.CreateVolumeResponse, error) {
|
||||
res, err := cs.backendServer.CreateVolume(ctx, req)
|
||||
if err != nil {
|
||||
return res, fmt.Errorf("failed to create CephFS volume: %w", err)
|
||||
}
|
||||
|
||||
backend := res.Volume
|
||||
|
||||
log.DebugLog(ctx, "CephFS volume created: %s", backend.VolumeId)
|
||||
|
||||
secret := req.GetSecrets()
|
||||
cr, err := util.NewAdminCredentials(secret)
|
||||
if err != nil {
|
||||
log.ErrorLog(ctx, "failed to retrieve admin credentials: %v", err)
|
||||
|
||||
return nil, status.Error(codes.InvalidArgument, err.Error())
|
||||
}
|
||||
defer cr.DeleteCredentials()
|
||||
|
||||
nfsVolume, err := NewNFSVolume(backend.VolumeId)
|
||||
if err != nil {
|
||||
return nil, status.Error(codes.InvalidArgument, err.Error())
|
||||
}
|
||||
|
||||
err = nfsVolume.Connect(cr)
|
||||
if err != nil {
|
||||
return nil, status.Errorf(codes.InvalidArgument, "failed to connect: %v", err)
|
||||
}
|
||||
|
||||
err = nfsVolume.CreateExport(backend)
|
||||
if err != nil {
|
||||
return nil, status.Errorf(codes.InvalidArgument, "failed to create export: %v", err)
|
||||
}
|
||||
|
||||
log.DebugLog(ctx, "published NFS-export: %s", nfsVolume)
|
||||
|
||||
// volume has been exported over NFS, set the "share" parameter to
|
||||
// allow mounting
|
||||
backend.VolumeContext["share"] = nfsVolume.GetExportPath()
|
||||
|
||||
return &csi.CreateVolumeResponse{Volume: backend}, nil
|
||||
}
|
||||
|
||||
// DeleteVolume deletes the volume in backend and its reservation.
|
||||
func (cs *Server) DeleteVolume(
|
||||
ctx context.Context,
|
||||
req *csi.DeleteVolumeRequest) (*csi.DeleteVolumeResponse, error) {
|
||||
secret := req.GetSecrets()
|
||||
cr, err := util.NewAdminCredentials(secret)
|
||||
if err != nil {
|
||||
log.ErrorLog(ctx, "failed to retrieve admin credentials: %v", err)
|
||||
|
||||
return nil, status.Error(codes.InvalidArgument, err.Error())
|
||||
}
|
||||
defer cr.DeleteCredentials()
|
||||
|
||||
nfsVolume, err := NewNFSVolume(req.GetVolumeId())
|
||||
if err != nil {
|
||||
return nil, status.Error(codes.InvalidArgument, err.Error())
|
||||
}
|
||||
|
||||
err = nfsVolume.Connect(cr)
|
||||
if err != nil {
|
||||
return nil, status.Errorf(codes.InvalidArgument, "failed to connect: %v", err)
|
||||
}
|
||||
|
||||
err = nfsVolume.DeleteExport()
|
||||
// TODO: if the export does not exist, but the backend does, delete the backend
|
||||
if err != nil {
|
||||
return nil, status.Errorf(codes.InvalidArgument, "failed to delete export: %v", err)
|
||||
}
|
||||
|
||||
log.DebugLog(ctx, "deleted NFS-export: %s", nfsVolume)
|
||||
|
||||
return cs.backendServer.DeleteVolume(ctx, req)
|
||||
}
|
||||
183
internal/nfs/controller/volume.go
Normal file
183
internal/nfs/controller/volume.go
Normal file
@ -0,0 +1,183 @@
|
||||
/*
|
||||
Copyright 2022 The Ceph-CSI 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 controller
|
||||
|
||||
import (
|
||||
"context"
|
||||
"fmt"
|
||||
"strings"
|
||||
|
||||
"github.com/ceph/ceph-csi/internal/util"
|
||||
|
||||
"github.com/container-storage-interface/spec/lib/go/csi"
|
||||
)
|
||||
|
||||
// NFSVolume presents the API for consumption by the CSI-controller to create,
|
||||
// modify and delete the NFS-exported CephFS volume. Instances of this struct
|
||||
// are short lived, they only exist as long as a CSI-procedure is active.
|
||||
type NFSVolume struct {
|
||||
volumeID string
|
||||
clusterID string
|
||||
mons string
|
||||
|
||||
// TODO: drop in favor of a go-ceph connection
|
||||
connected bool
|
||||
cr *util.Credentials
|
||||
}
|
||||
|
||||
// NewNFSVolume create a new NFSVolume instance for the currently executing
|
||||
// CSI-procedure.
|
||||
func NewNFSVolume(volumeID string) (*NFSVolume, error) {
|
||||
// TODO: validate volume.VolumeContext parameters
|
||||
vi := util.CSIIdentifier{}
|
||||
|
||||
err := vi.DecomposeCSIID(volumeID)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("error decoding volume ID (%s): %w", volumeID, err)
|
||||
}
|
||||
|
||||
return &NFSVolume{
|
||||
volumeID: volumeID,
|
||||
}, nil
|
||||
}
|
||||
|
||||
// String returns a simple/short representation of the NFSVolume.
|
||||
func (nv *NFSVolume) String() string {
|
||||
return nv.volumeID
|
||||
}
|
||||
|
||||
// Connect fetches cluster connection details (like MONs) and connects to the
|
||||
// Ceph cluster. This uses go-ceph, so after Connect(), Destroy() should be
|
||||
// called to cleanup resources.
|
||||
func (nv *NFSVolume) Connect(cr *util.Credentials) error {
|
||||
nv.cr = cr
|
||||
|
||||
vi := util.CSIIdentifier{}
|
||||
|
||||
err := vi.DecomposeCSIID(nv.volumeID)
|
||||
if err != nil {
|
||||
return fmt.Errorf("error decoding volume ID (%s): %w", nv.volumeID, err)
|
||||
}
|
||||
|
||||
nv.clusterID = vi.ClusterID
|
||||
nv.mons, err = util.Mons(util.CsiConfigFile, vi.ClusterID)
|
||||
if err != nil {
|
||||
return fmt.Errorf("failed to get MONs for cluster (%s): %w", vi.ClusterID, err)
|
||||
}
|
||||
|
||||
nv.connected = true
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// GetExportPath returns the path on the NFS-server that can be used for
|
||||
// mounting.
|
||||
func (nv *NFSVolume) GetExportPath() string {
|
||||
return "/" + nv.volumeID
|
||||
}
|
||||
|
||||
// CreateExport takes the (CephFS) CSI-volume and instructs Ceph Mgr to create
|
||||
// a new NFS-export for the volume on the Ceph managed NFS-server.
|
||||
func (nv *NFSVolume) CreateExport(backend *csi.Volume) error {
|
||||
if !nv.connected {
|
||||
return fmt.Errorf("can not created export for %q: not connected", nv)
|
||||
}
|
||||
|
||||
fs := backend.VolumeContext["fsName"]
|
||||
nfsCluster := backend.VolumeContext["nfsCluster"]
|
||||
path := backend.VolumeContext["subvolumePath"]
|
||||
|
||||
// ceph nfs export create cephfs ${FS} ${NFS} /${EXPORT} ${SUBVOL_PATH}
|
||||
args := []string{
|
||||
"--id", nv.cr.ID,
|
||||
"--keyfile=" + nv.cr.KeyFile,
|
||||
"-m", nv.mons,
|
||||
"nfs",
|
||||
"export",
|
||||
"create",
|
||||
"cephfs",
|
||||
fs,
|
||||
nfsCluster,
|
||||
nv.GetExportPath(),
|
||||
path,
|
||||
}
|
||||
|
||||
// TODO: use new go-ceph API
|
||||
_, stderr, err := util.ExecCommand(context.TODO(), "ceph", args...)
|
||||
if err != nil {
|
||||
return fmt.Errorf("executing ceph export command failed (%w): %s", err, stderr)
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// TODO: store the NFSCluster ("CephNFS" name) in the journal?
|
||||
func (nv *NFSVolume) getNFSCluster() (string, error) {
|
||||
if !nv.connected {
|
||||
return "", fmt.Errorf("can not get the NFSCluster for %q: not connected", nv)
|
||||
}
|
||||
|
||||
// ceph nfs cluster ls
|
||||
// FIXME: with a single CephNFS, it only returns a single like
|
||||
args := []string{
|
||||
"--id", nv.cr.ID,
|
||||
"--keyfile=" + nv.cr.KeyFile,
|
||||
"-m", nv.mons,
|
||||
"nfs",
|
||||
"cluster",
|
||||
"ls",
|
||||
}
|
||||
|
||||
nfsCluster, _, err := util.ExecCommand(context.TODO(), "ceph", args...)
|
||||
if err != nil {
|
||||
return "", fmt.Errorf("executing ceph export command failed: %w", err)
|
||||
}
|
||||
|
||||
return strings.TrimSpace(nfsCluster), nil
|
||||
}
|
||||
|
||||
// DeleteExport removes the NFS-export from the Ceph managed NFS-server.
|
||||
func (nv *NFSVolume) DeleteExport() error {
|
||||
if !nv.connected {
|
||||
return fmt.Errorf("can not delete export for %q: not connected", nv)
|
||||
}
|
||||
|
||||
nfsCluster, err := nv.getNFSCluster()
|
||||
if err != nil {
|
||||
return fmt.Errorf("failed to identify NFS cluster: %w", err)
|
||||
}
|
||||
|
||||
// ceph nfs export rm <cluster_id> <pseudo_path>
|
||||
args := []string{
|
||||
"--id", nv.cr.ID,
|
||||
"--keyfile=" + nv.cr.KeyFile,
|
||||
"-m", nv.mons,
|
||||
"nfs",
|
||||
"export",
|
||||
"delete",
|
||||
nfsCluster,
|
||||
nv.GetExportPath(),
|
||||
}
|
||||
|
||||
// TODO: use new go-ceph API
|
||||
_, stderr, err := util.ExecCommand(context.TODO(), "ceph", args...)
|
||||
if err != nil {
|
||||
return fmt.Errorf("executing ceph export command failed (%w): %s", err, stderr)
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
77
internal/nfs/driver/driver.go
Normal file
77
internal/nfs/driver/driver.go
Normal file
@ -0,0 +1,77 @@
|
||||
/*
|
||||
Copyright 2022 The Ceph-CSI 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 driver
|
||||
|
||||
import (
|
||||
csicommon "github.com/ceph/ceph-csi/internal/csi-common"
|
||||
"github.com/ceph/ceph-csi/internal/nfs/controller"
|
||||
"github.com/ceph/ceph-csi/internal/nfs/identity"
|
||||
"github.com/ceph/ceph-csi/internal/util"
|
||||
"github.com/ceph/ceph-csi/internal/util/log"
|
||||
|
||||
"github.com/container-storage-interface/spec/lib/go/csi"
|
||||
)
|
||||
|
||||
// Driver contains the default identity and controller struct.
|
||||
type Driver struct{}
|
||||
|
||||
// NewDriver returns new ceph driver.
|
||||
func NewDriver() *Driver {
|
||||
return &Driver{}
|
||||
}
|
||||
|
||||
// Run start a non-blocking grpc controller,node and identityserver for
|
||||
// ceph CSI driver which can serve multiple parallel requests.
|
||||
func (fs *Driver) Run(conf *util.Config) {
|
||||
// Initialize default library driver
|
||||
cd := csicommon.NewCSIDriver(conf.DriverName, util.DriverVersion, conf.NodeID)
|
||||
if cd == nil {
|
||||
log.FatalLogMsg("failed to initialize CSI driver")
|
||||
}
|
||||
|
||||
cd.AddControllerServiceCapabilities([]csi.ControllerServiceCapability_RPC_Type{
|
||||
csi.ControllerServiceCapability_RPC_CREATE_DELETE_VOLUME,
|
||||
csi.ControllerServiceCapability_RPC_SINGLE_NODE_MULTI_WRITER,
|
||||
})
|
||||
// VolumeCapabilities are validated by the CephFS Controller
|
||||
cd.AddVolumeCapabilityAccessModes([]csi.VolumeCapability_AccessMode_Mode{
|
||||
csi.VolumeCapability_AccessMode_MULTI_NODE_MULTI_WRITER,
|
||||
csi.VolumeCapability_AccessMode_SINGLE_NODE_WRITER,
|
||||
csi.VolumeCapability_AccessMode_SINGLE_NODE_MULTI_WRITER,
|
||||
csi.VolumeCapability_AccessMode_SINGLE_NODE_SINGLE_WRITER,
|
||||
})
|
||||
|
||||
// Create gRPC servers
|
||||
server := csicommon.NewNonBlockingGRPCServer()
|
||||
srv := csicommon.Servers{
|
||||
IS: identity.NewIdentityServer(cd),
|
||||
CS: controller.NewControllerServer(cd),
|
||||
}
|
||||
server.Start(conf.Endpoint, conf.HistogramOption, srv, conf.EnableGRPCMetrics)
|
||||
if conf.EnableGRPCMetrics {
|
||||
log.WarningLogMsg("EnableGRPCMetrics is deprecated")
|
||||
go util.StartMetricsServer(conf)
|
||||
}
|
||||
if conf.EnableProfiling {
|
||||
if !conf.EnableGRPCMetrics {
|
||||
go util.StartMetricsServer(conf)
|
||||
}
|
||||
log.DebugLogMsg("Registering profiling handler")
|
||||
go util.EnableProfiling()
|
||||
}
|
||||
server.Wait()
|
||||
}
|
||||
55
internal/nfs/identity/identityserver.go
Normal file
55
internal/nfs/identity/identityserver.go
Normal file
@ -0,0 +1,55 @@
|
||||
/*
|
||||
Copyright 2022 The Ceph-CSI 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 identity
|
||||
|
||||
import (
|
||||
"context"
|
||||
|
||||
csicommon "github.com/ceph/ceph-csi/internal/csi-common"
|
||||
|
||||
"github.com/container-storage-interface/spec/lib/go/csi"
|
||||
)
|
||||
|
||||
// Server struct of ceph CSI driver with supported methods of CSI identity
|
||||
// server spec.
|
||||
type Server struct {
|
||||
*csicommon.DefaultIdentityServer
|
||||
}
|
||||
|
||||
// NewIdentityServer initialize a identity server for ceph CSI driver.
|
||||
func NewIdentityServer(d *csicommon.CSIDriver) *Server {
|
||||
return &Server{
|
||||
DefaultIdentityServer: csicommon.NewDefaultIdentityServer(d),
|
||||
}
|
||||
}
|
||||
|
||||
// GetPluginCapabilities returns available capabilities of the ceph driver.
|
||||
func (is *Server) 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
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user