Commit Graph

30 Commits

Author SHA1 Message Date
Niels de Vos
eea97ca014 util: move GetID() from EncryptionKMS to VolumeEncryption
There is no need for each EncryptionKMS to implement the same GetID()
function. We have a VolumeEncryption type that is more suitable for
keeping track of the KMS-ID that was used to get the configuration of
the KMS.

This does not change any metadata that is stored anywhere.

Signed-off-by: Niels de Vos <ndevos@redhat.com>
2021-03-24 12:09:04 +00:00
Niels de Vos
9317e2afb4 util: rewrite GetKMS() to use KMS provider plugin API
GetKMS() is the public API that initilizes the KMS providers on demand.
Each provider identifies itself with a KMS-Type, and adds its own
initialization function to a switch/case construct. This is not well
maintainable.

The new GetKMS() can be used the same way, but uses the new kmsManager
interface to create and configure the KMS provider instances.

All existing KMS providers are converted to use the new kmsManager
plugins API.

Signed-off-by: Niels de Vos <ndevos@redhat.com>
2021-03-24 12:09:04 +00:00
Niels de Vos
5e63743243 util: add SecretsMetadataKMS
This new KMS is based on the (default) SecretsKMS, but instead of using
the passphrase for all volumes, the passphrase is used to
encrypt/decrypt a Data-Encryption-Key that is stored in the metadata of
the volume.

CC: Patrick Uiterwijk <puiterwijk@redhat.com> - for encryption guidance
Signed-off-by: Niels de Vos <ndevos@redhat.com>
2021-03-12 10:11:47 +00:00
Niels de Vos
6915624380 util: add EncryptDEK DecryptDEK to EncryptionKMS interface
By adding these methods, a KMS can explicitly encrypt/decrypt the DEK if
there is no transparent way of doing so.

Hashicorp Vault encrypts the DEK when it it stored, and decrypts it when
fetched. Therefor there is no need to do any encryption in this case.

Signed-off-by: Niels de Vos <ndevos@redhat.com>
2021-03-12 10:11:47 +00:00
Niels de Vos
9ac7f56400 util: move existing KMS implementations to the DEKStore interface
Use DEKStore API for Fetching and Storing passphrases.

Drop the fallback for the old KMS interface that is now provided as
DEKStore. The original implementation has been re-used for the DEKStore
interface.

This also moves GetCryptoPassphrase/StoreNewCryptoPassphrase functions
to methods of VolumeEncryption.

Signed-off-by: Niels de Vos <ndevos@redhat.com>
2021-03-12 10:11:47 +00:00
Niels de Vos
b60dd286c6 util: use the KMS as DEKStore if it supports it
Signed-off-by: Niels de Vos <ndevos@redhat.com>
2021-03-12 10:11:47 +00:00
Niels de Vos
ee033da8e9 util: add DEKStore interface
DEKStore is a new interface that will be used for Storing and Fetching
DEKs. The existing implementations for KMS already function as a
DEKStore, and will be updated to match the interface.

By splitting KMS and DEKStore into two components, the encryption
configuration for volumes becomes more modular. This makes it possible
to implement a DEKStore where the encrypted DEK for a volume is stored
in the metadata of the volume (RBD image).

Signed-off-by: Niels de Vos <ndevos@redhat.com>
2021-03-12 10:11:47 +00:00
Niels de Vos
d4076d6216 util: introduce VolumeEncryption type
Prepare for grouping encryption related functions together. The main
rbdVolume object should not be cluttered with KMS or DEK procedures.

Signed-off-by: Niels de Vos <ndevos@redhat.com>
2021-03-12 10:11:47 +00:00
Niels de Vos
aa52afff09 cleanup: move SecretsKMS in own file
Prepared for an enhanced API to communicate with a KMS and keep the DEK
storage separate. The crypto.go file is already mixed with different
functions, so moving the KMS part into its own file, just like we have
for Hashicorp Vault KMS's.

Signed-off-by: Niels de Vos <ndevos@redhat.com>
2021-03-12 10:11:47 +00:00
Niels de Vos
dc81e001cf cleanup: remove unused MissingPassphrase error type
Storing a passphrase is now done while the volume is created. There is
no need to (re)generate a passphrase when it can not be found.

Signed-off-by: Niels de Vos <ndevos@redhat.com>
2021-02-17 17:51:13 +00:00
Niels de Vos
9b6c2117f3 rbd: set encryption passphrase on CreateVolume
Have the provisioner create the passphrase for the volume, instead of
doign it lazily at the time the volume is used for the 1st time. This
prevents potential races where pods on different nodes try to store
different passphrases at the (almost) same time.

Signed-off-by: Niels de Vos <ndevos@redhat.com>
2021-02-17 17:51:13 +00:00
Madhu Rajanna
b370d9afb6 rbd: unmarshal the data read from file
if are reading the kms data from the file.
than only we need to unmarshal. If we are reading
from the configmap it already returns the unmarshal
data.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
2021-02-04 14:58:40 +00:00
Madhu Rajanna
584a43dc2c rbd: fix issue in ENV variable check
Currently cephcsi is returning an error
if the ENV variable is set, but it should not.
This commit fixes the the POD_NAMESPACE env
variable issue and as well as the KMS_CONFIG_NAME
ENV variable.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
2021-01-29 10:00:12 +00:00
Madhu Rajanna
b3fbcb9c95 rbd: read configuration from the configmap
if the kms encryption configmap is not mounted
as a volume to the CSI pods, add the code to
read the configuration from the kubernetes. Later
the code to fetch the configmap will be moved to
the new sidecar which is will talk to respective
CO to fetch the encryption configurations.

The k8s configmap uses the standard vault spefic
names to add the configurations. this will be converted
back to the CSI configurations.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
2020-12-16 15:05:05 +00:00
Madhu Rajanna
81061e9f68 util: add support for vault certificates
Added a option to pass the client certificate
and the client certificate key for the vault token
based encryption.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
2020-12-16 11:01:15 +00:00
Niels de Vos
db15458d16 cleanup: use constant for "vault" KMS-type
Signed-off-by: Niels de Vos <ndevos@redhat.com>
2020-12-14 14:45:09 +00:00
Niels de Vos
cc5684dbd8 util: add support for Hashicorp Vault with Tokens per Tenant
Tenants (Kubernetes Namespaces) can use their own Vault Token to manage
the encryption keys for PVCs. The working is documented in #1743.

See-also: #1743
Closes: #1500
Signed-off-by: Niels de Vos <ndevos@redhat.com>
2020-12-14 14:45:09 +00:00
Niels de Vos
8f91c672d4 util: add EncryptionKMS.Destroy()
Add a new method to the EncryptionKMS interface so that resources can be
freed when EncryptionKMS instances get freed.

With the move to using the libopenstorage API, a temporary file needs to
store the optional CA certificate. The Destroy() method of the
vaultConnection type now removes this file.

The rbdVolume uses the EncryptionKMS type now, so call the new Destroy()
method from withing rbdVolume.Destroy().

Signed-off-by: Niels de Vos <ndevos@redhat.com>
2020-12-14 14:45:09 +00:00
Niels de Vos
f08182e2fc rbd: pass Owner to GetKMS()
Signed-off-by: Niels de Vos <ndevos@redhat.com>
2020-12-14 14:45:09 +00:00
Niels de Vos
d28a5a5f23 util: pass map[string]interface{} to initialize KMS
This makes it possible to pass a more complex configuration to the
initialize functions for KMS's. The upcoming VaultTokensKMS can use
overrides for configiration options on a per tenant basis. Without this
change, it would not be possible to consume the JSON configuration file.

See-also: #1743
Signed-off-by: Niels de Vos <ndevos@redhat.com>
2020-12-14 14:45:09 +00:00
Niels de Vos
3dfe65d17c cleanup: return error type in GetCryptoPassphrase()
Signed-off-by: Niels de Vos <ndevos@redhat.com>
2020-12-09 08:35:35 +00:00
Madhu Rajanna
8c32045c4e util: use ErrorLog for context based logging
use ErrorLog for context based logging for
more detailed logging.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
2020-08-13 09:44:12 +00:00
Madhu Rajanna
9229e84a77 util: rename ErrorLog to ErrorLogMsg to parity
as we have 2 functions for logging. one for logging
with message and another one is for logging with
context. renamed ErrorLog to  ErrorLogMsg to log
with messages.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
2020-08-13 09:44:12 +00:00
Niels de Vos
fb56a7595a util: use local ErrorLog() for GetCryptoPassphrase() instead of klog
Signed-off-by: Niels de Vos <ndevos@redhat.com>
2020-08-11 08:11:37 +00:00
Yug
7f94a57908 cleanup: address godot warnings
Top level comments should end in a period

Signed-off-by: Yug <yuggupta27@gmail.com>
2020-07-21 08:36:24 +00:00
Yug
1490daed7e cleanup: Avoid usage of numbers
Add seperate functions to handle all
levels and types of logging.

Signed-off-by: Yug <yuggupta27@gmail.com>
2020-07-10 07:41:23 +00:00
Yug
8dc4ab6b1b rebase: update k8s.io/klog to v2.3.0
Update klog version to v2.3.0

Signed-off-by: Yug <yuggupta27@gmail.com>
2020-07-10 07:41:23 +00:00
Niels de Vos
92aae4834e cleanup: use standard Golang errors package
"github.com/pkg/errors" does not offer more functionlity than that we
need from the standard "errors" package. With Golang v1.13 errors can be
wrapped with `fmt.Errorf("... %w", err)`. `errors.Is()` and
`errors.As()` are available as well.

See-also: https://tip.golang.org/doc/go1.13#error_wrapping
Signed-off-by: Niels de Vos <ndevos@redhat.com>
2020-07-03 09:12:48 +00:00
Niels de Vos
f814bd72e5 rbd/go-ceph: add GetMetadata() and GetMetadata() functions
Signed-off-by: Niels de Vos <ndevos@redhat.com>
2020-05-04 13:21:03 +00:00
Niels de Vos
32839948ef cleanup: move pkg/ to internal/
The internal/ directory in Go has a special meaning, and indicates that
those packages are not meant for external consumption. Ceph-CSI does
provide public APIs for other projects to consume. There is no plan to
keep the API of the internally used packages stable.

Closes: #903
Signed-off-by: Niels de Vos <ndevos@redhat.com>
2020-04-23 11:00:59 +00:00