* Revert "Azure AD authentication for the Postgres backend (#15757)"
This reverts commit 33c6d82dc3.
* Revert "SQL Backend (#11048)"
This reverts commit 06fef2abf1.
* Remove Postgres backend from the docs
* Remove the Postgres backend from the testplan
Update metalinter, fix a few lint warnings and replace deprecated linters.
`deadcode`, `structcheck` and `varcheck` are abandoned and now replaced by [`unused`][1].
Since 1.19, `go fmt` reformats godocs according to https://go.dev/doc/comment. I've done a bulk-reformatting of the codebase to keep the linter happy. Backporting is mostly harmless (the exception being `lib/services/role_test.go`, that for some reason breaks the _old_ linter using the new format).
[1]: https://golangci-lint.run/usage/linters/
* Bump golangci-lint version
* Replace abandoned linters
* Fix bodyclose on lib/auth/github.com
* Fix bodyclose on lib/kube/proxy/streamproto/proto_test.go
* Fix bodyclose on lib/srv/alpnproxy/proxy_test.go
* Fix bodyclose on lib/web/conn_upgrade_test.go
* Silence staticcheck on lib/kube/proxy/forwarder_test.go
* Silence staticcheck on lib/utils/certs_test.go
* Address BuildNameToCertificate deprecation warnings
* Run `go fmt ./...`
* Run `go fmt ./...` on api/
* Ignore formatting in role_test.go
* Remove redundant initializers in lib/srv/uacc/
* Update e/
## What
First part of the Kubernetes [Discovery RFD](https://github.com/gravitational/teleport/pull/13376/) to introduce a Kubernetes server per cluster.
This PR introduces a separate Kubernetes server that uses the already introduced `KubernetesClusterV3`.
## Compatibility
In previous versions, Kubernetes Clusters were part of regular `ServerV2` resource and this refactoring deprecates the `ServerV2` usage but keeps them for compatibility with previous version.
Everything is backward compatible, so v10 kubernetes agents and trusted clusters can connect fine.
## Next steps
Once this is merged, a new PR will introduce dynamic registration for Kubernetes Clusters discovered through EKS Discovery.
* configure golangci-lint misspell to check for anglicized spellings
* Americanize spellings
* fix aws constant value with british spelling 🇬🇧
* update api types with americanized spellings
* use american spellings .cloudbuild/scripts
Storage paths returned by Key do not contain a trailing slash, which will
cause range matching to match on paths that contain the original path as
a prefix. By using ExactKey, range matching will only match sub-paths.
Fixes#5188.
The Migrate method on the Backend interface was not implemented by any
backends.
Migration should be implemented in the New method of backends so they
can be sure migration happens before any background processes are
started.
* Define sorters for resource Server, AppServer, and DbServer
* Add sorting to ListResources in caching and presence layer
* ListResources now returns nextKey set to the limit+1th item,
previously it returned a possible next key, where there
may or may not be more results.
* Adds username and initial screen size to the websocket parameter string and sends over tdp during the connection process
* simplifications from CR
* fixes // //
The use of non-UTF8 keys with the DynamoDB back-end causes a failure
deep within the AWS request deserialization code, presenting a
non-obvious failure to the user.
This change adds validation to all backends that requires all keys
are valid UTF8 strings. It also adds a warning to the Backend
interface declaration that the keys may be constrained to valid
UTF8.
Other changes include:
* Updating the `Backend` conformance test suite to not present binary
keys to the various backend implementations.
* Adding a `region` value to the DynamoDB configuration test input
* Adding missing imports to `_test` files.
* Updating build instructions in README
Buffer fan out used simple prefix match
in a loop, what resulted in high CPU load
on many connected watchers.
This commit switches to RADIX trees for
prefix matching what reduces CPU load
substantially for 5K+ connected watchers.
* Add resest for buffers to close watchers
and reset buffer the state.
* Add reconnect logic to DynamoDB
* Add tests for cache watchers, make sure
the errors of the cache internal watcher propagate to
external watchers.
This commit expands the usage of the caching layer
for auth server API:
* Introduces in-memory cache that is used to serve all
Auth server API requests. This is done to achieve scalability
on 10K+ node clusters, where each node fetches certificate authorities,
roles, users and join tokens. It is not possible to scale
DynamoDB backend or other backends on 10K reads per seconds
on a single shard or partition. The solution is to introduce
an in-memory cache of the backend state that is always used
for reads.
* In-memory cache has been expanded to support all resources
required by the auth server.
* Experimental `tctl top` command has been introduced to display
common single node metrics.
Replace SQLite Memory Backend with BTree
SQLite in memory backend was suffering from
high tail latencies under load (up to 8 seconds
in 99.9%-ile on load configurations).
This commit replaces the SQLite memory caching
backend with in-memory BTree backend that
brought down tail latencies to 2 seconds (99.9%-ile)
and brought overall performance improvement.
This commit introduces several key changes to
Teleport backend and API infrastructure
in order to achieve scalability improvements
on 10K+ node deployments.
Events and plain keyspace
--------------------------
New backend interface supports events,
pagination and range queries
and moves away from buckets to
plain keyspace, what better aligns
with DynamoDB and Etcd featuring similar
interfaces.
All backend implementations are
exposing Events API, allowing
multiple subscribers to consume the same
event stream and avoid polling database.
Replacing BoltDB, Dir with SQLite
-------------------------------
BoltDB backend does not support
having two processes access the database at the
same time. This prevented Teleport
using BoltDB backend to be live reloaded.
SQLite supports reads/writes by multiple
processes and makes Dir backend obsolete
as SQLite is more efficient on larger collections,
supports transactions and can detect data
corruption.
Teleport automatically migrates data from
Bolt and Dir backends into SQLite.
GRPC API and protobuf resources
-------------------------------
GRPC API has been introduced for
the auth server. The auth server now serves both GRPC
and JSON-HTTP API on the same TLS socket and uses
the same client certificate authentication.
All future API methods should use GRPC and HTTP-JSON
API is considered obsolete.
In addition to that some resources like
Server and CertificateAuthority are now
generated from protobuf service specifications in
a way that is fully backward compatible with
original JSON spec and schema, so the same resource
can be encoded and decoded from JSON, YAML
and protobuf.
All models should be refactored
into new proto specification over time.
Streaming presence service
--------------------------
In order to cut bandwidth, nodes
are sending full updates only when changes
to labels or spec have occured, otherwise
new light-weight GRPC keep alive updates are sent
over to the presence service, reducing
bandwidth usage on multi-node deployments.
In addition to that nodes are no longer polling
auth server for certificate authority rotation
updates, instead they subscribe to event updates
to detect updates as soon as they happen.
This is a new API, so the errors are inevitable,
that's why polling is still done, but
on a way slower rate.
This commit implements #1860
During the the rotation procedure issuing TLS and SSH
certificate authorities are re-generated and all internal
components of the cluster re-register to get new
credentials.
The rotation procedure is based on a distributed
state machine algorithm - certificate authorities have
explicit rotation state and all parts of the cluster sync
local state machines by following transitions between phases.
Operator can launch CA rotation in auto or manual modes.
In manual mode operator moves cluster bewtween rotation states
and watches the states of the components to sync.
In auto mode state transitions are happening automatically
on a specified schedule.
The design documentation is embedded in the code:
lib/auth/rotate.go
* Fix bug with OIDC powered sessions logged out after 10 minutes
* Adjust web sessions durations by taking roles into account
* Provide explicit TTL enforced on the server side for bearer tokens
Before this PR the web session TTL was measured using defaults,
10 minutes for local sessions and 1 hour for OIDC sessions and
the system relied on client to renew the bearer token.
With this change bearer token TTL is set to 10 minutes
and the entire web session will expire if not renewed before
The maximum session duration is set to 12 hours, if not
limited to a smaller value by roles in RBAC modules.
- Added ability to read AWS config from `~/.aws` directory for testing
- Fixed TTL bug in DynamoDB back-end
- Made FS back-end return similar error types as Boltdb does
- Cleaned up buggy tests for DynamoDB
- Removed unnecessary locks everywhere in code
This backend can be enabled by optionally adding a new build flag.
See lib/backend/dynamo/README.md for details.
It should not affect default Teleport builds.
This commit includes refactoring and cleanup of cert authority sybsystem:
* User keys methods are deleted
* Authorities CRUD is simplified
* Lots of code removed
Forrest Marshall