This is to allow the use of binary LDAP entry attributes as the UID.
For example, a user might like to configure AD’s objectGUID or maybe
objectSid attributes as the UID attribute.
This negatively impacts the readability of the UID when it did not come
from a binary value, but we're considering this an okay trade-off to
keep things simple for now. In the future, we may offer more
customizable encoding options for binary attributes.
These UIDs are currently only used in the downstream OIDC `sub` claim.
They do not effect the user's identity on the Kubernetes cluster,
which is only based on their mapped username and group memberships from
the upstream identity provider. We are not currently supporting any
special encoding for those username and group name LDAP attributes, so
their values in the LDAP entry must be ASCII or UTF-8 in order for them
to be interpreted correctly.
This test setup should tolerate when the TokenCredentialRequest API isn't quite ready to authenticate the user or issue a cert.
Signed-off-by: Matt Moyer <moyerm@vmware.com>
This check is no longer valid, because there can be ephemeral, recoverable errors that show as ErrorDuringSetup.
Signed-off-by: Matt Moyer <moyerm@vmware.com>
- This enhances our LDAP client code to make it possible to optionally
dial an LDAP server without TLS and then use StartTLS to upgrade
the connection to TLS.
- The controller for LDAPIdentityProviders is not using this option
yet. That will come in a future commit.
Previously, our controllers would automatically create a CredentialIssuer with a singleton name. The helpers we had for this also used "raw" client access and did not take advantage of the informer cache pattern.
With this change, the CredentialIssuer is always created at install time in the ytt YAML. The controllers now only update the existing CredentialIssuer status, and they do so using the informer cache as much as possible.
This change is targeted at only the kubecertagent controller to start. The impersonatorconfig controller will be updated in a following PR along with other changes.
Signed-off-by: Matt Moyer <moyerm@vmware.com>
Reflect the upstream group membership into the Supervisor's
downstream tokens, so they can be added to the user's
identity on the workload clusters.
LDAP group search is configurable on the
LDAPIdentityProvider resource.
See RFC6648 which asks that people stop using `X-` on header names.
Also Matt preferred not mentioning "IDP" in the header name.
Signed-off-by: Matt Moyer <moyerm@vmware.com>
This change makes it easier to understand misconfigurations caused
by issuers with extraneous trailing slashes.
Signed-off-by: Mo Khan <mok@vmware.com>
The admin kubeconfigs we have on EKS clusters are a bit different from others, because there is no certificate/key (EKS does not use certificate auth).
This code didn't quite work correctly in that case. The fix is to allow the case where `tlsConfig.GetClientCertificate` is non-nil, but returns a value with no certificates.
Signed-off-by: Matt Moyer <moyerm@vmware.com>
The supervisor treats all events the same hence it must use a
singleton queue.
Updated the integration test to remove the data race caused by
calling methods on testing.T outside of the main test go routine.
Signed-off-by: Monis Khan <mok@vmware.com>
This change updates the impersonator logic to pass through requests
that authenticated via a bearer token that asserts a UID. This
allows us to support service account tokens (as well as any other
form of token based authentication).
Signed-off-by: Monis Khan <mok@vmware.com>
This controller is responsible for cleaning up kube-cert-agent pods that were deployed by previous versions.
They are easily identified because they use a different `kube-cert-agent.pinniped.dev` label compared to the new agent pods (`true` vs. `v2`).
Signed-off-by: Matt Moyer <moyerm@vmware.com>
This is a relatively large rewrite of much of the kube-cert-agent controllers. Instead of managing raw Pod objects, they now create a single Deployment and let the builtin k8s controller handle it from there.
This reduces the amount of code we need and should handle a number of edge cases better, especially those where a Pod becomes "wedged" and needs to be recreated.
Signed-off-by: Matt Moyer <moyerm@vmware.com>
Now that we have the fix from https://github.com/kubernetes/kubernetes/pull/97693, we no longer need these sleeps.
The underlying authenticator initialization is still asynchronous, but should happen within a few milliseconds.
Signed-off-by: Matt Moyer <moyerm@vmware.com>
This change updates the impersonator logic to use the delegated
authorizer for all non-rest verbs such as impersonate. This allows
it to correctly perform authorization checks for incoming requests
that set impersonation headers while not performing unnecessary
checks that are already handled by KAS.
The audit layer is enabled to track the original user who made the
request. This information is then included in a reserved extra
field original-user-info.impersonation-proxy.concierge.pinniped.dev
as a JSON blob.
Signed-off-by: Monis Khan <mok@vmware.com>
Also force the LDAP server pod to restart whenever the LDIF file
changes, so whenever you redeploy the tools deployment with a new test
user password the server will be updated.
- Bad usernames and passwords aren't really errors, since they are
based on end-user input.
- Other kinds of authentication failures are caused by bad configuration
so still treat those as errors.
- Empty usernames and passwords are already prevented by our endpoint
handler, but just to be safe make sure they cause errors inside the
authenticator too.
- The unit tests for upstreamldap.Provider need to mock the LDAP server,
so add an integration test which allows us to get fast feedback for
this code against a real LDAP server.
- Automatically wrap the user search filter in parenthesis if it is not
already wrapped in parens.
- More special handling for using "dn" as the username or UID attribute
name.
- Also added some more comments to types_ldapidentityprovider.go.tmpl
- Add some fields to LDAPIdentityProvider that we will need to be able
to search for users during login
- Enhance TestSupervisorLogin to test logging in using an upstream LDAP
identity provider. Part of this new test is skipped for now because
we haven't written the corresponding production code to make it
pass yet.
- Some refactoring and enhancement to env.go and the corresponding env
vars to support the new upstream LDAP provider integration tests.
- Use docker.io/bitnami/openldap for our test LDAP server instead of our
own fork now that they have fixed the bug that we reported.
Signed-off-by: Andrew Keesler <akeesler@vmware.com>
The goal here was to start on an integration test to get us closer to the red
test that we want so we can start working on LDAP.
Signed-off-by: Andrew Keesler <akeesler@vmware.com>
- Rename the test/deploy/dex directory to test/deploy/tools
- Rename the dex namespace to tools
- Add a new ytt value called `pinny_ldap_password` for the tools
ytt templates
- This new value is not used on main at this time. We intend to use
it in the forthcoming ldap branch. We're defining it on main so
that the CI scripts can use it across all branches and PRs.
Signed-off-by: Ryan Richard <richardry@vmware.com>
This test could flake if the load balancer hostname was provisioned but is not yet resolving in DNS from the test process.
The fix is to retry this step for up to 5 minutes.
Signed-off-by: Matt Moyer <moyerm@vmware.com>
This test could fail when the cluster was under heavy load. This could cause kubectl to emit "Throttling request took [...]" logs that triggered a failure in the test.
The fix is to ignore these innocuous warnings.
Signed-off-by: Matt Moyer <moyerm@vmware.com>
We had this code that printed out pod logs when certain tests failed, but it is a bit cumbersome. We're removing it because we added a CI task that exports all pod logs after every CI run, which accomplishes the same thing and provides us a bunch more data.
Signed-off-by: Matt Moyer <moyerm@vmware.com>
We've seen some test flakes caused by this test. Some small changes:
- Use a 30s timeout for each iteration of the test loop (so each iteration needs to check or fail more quickly).
- Log a bit more during the checks so we can diagnose what's going on.
- Increase the overall timeout from one minute to five minutes
Signed-off-by: Matt Moyer <moyerm@vmware.com>
In the case where we are using middleware (e.g., when the api group is
different) in our kubeclient, these error messages have a "...middleware request
for..." bit in the middle.
Signed-off-by: Andrew Keesler <akeesler@vmware.com>
This test could flake in some rare scenarios. This change adds a bunch of retries, improves the debugging output if the tests fail, and puts all of the subtests in parallel which saves ~10s on my local machine.
Signed-off-by: Matt Moyer <moyerm@vmware.com>
This test has occasionally flaked because it only waited for the APIService GET to finish, but did not wait for the controller to successfully update the target object.
The new code should be more patient and allow the controller up to 10s to perform the expected action.
Signed-off-by: Matt Moyer <moyerm@vmware.com>
This new capability describes whether a cluster is expected to allow anonymous requests (most do since k8s 1.6.x, but AKS has it disabled).
This commit also contains new capability YAML files for AKS and EKS, mostly to document publicly how we expect our tests to function in those environments.
Signed-off-by: Matt Moyer <moyerm@vmware.com>
At the end of the test, wait for the KubeClusterSigningCertificate
strategy on the CredentialIssuer to go back to being healthy, to avoid
polluting other integration tests which follow this one.
We were previously issuing both client certs and server certs with
both extended key usages included. Split the Issue*() methods into
separate methods for issuing server certs versus client certs so
they can have different extended key usages tailored for each use
case.
Also took the opportunity to clean up the parameters of the Issue*()
methods and New() methods to more closely match how we prefer to call
them. We were always only passing the common name part of the
pkix.Name to New(), so now the New() method just takes the common name
as a string. When making a server cert, we don't need to set the
deprecated common name field, so remove that param. When making a client
cert, we're always making it in the format expected by the Kube API
server, so just accept the username and group as parameters directly.
I'm kinda surprised this is working with our current implementation of the
impersonator, but regardless this seems like a step forward.
Signed-off-by: Andrew Keesler <akeesler@vmware.com>
The impersonator_test.go unit test now starts the impersonation
server and makes real HTTP requests against it using client-go.
It is backed by a fake Kube API server.
The CA IssuePEM() method was missing the argument to allow a slice
of IP addresses to be passed in.
These tests occasionally flake because of a conflict error such as:
```
supervisor_discovery_test.go:105:
Error Trace: supervisor_discovery_test.go:587
supervisor_discovery_test.go:105
Error: Received unexpected error:
Operation cannot be fulfilled on federationdomains.config.supervisor.pinniped.dev "test-oidc-provider-lvjfw": the object has been modified; please apply your changes to the latest version and try again
Test: TestSupervisorOIDCDiscovery
```
These retries should improve the reliability of the tests.
Signed-off-by: Matt Moyer <moyerm@vmware.com>
Also make each t.Run use its own namespace to slight reduce the
interdependency between them.
Use t.Cleanup instead of defer in whoami_test.go just to be consistent
with other integration tests.
The same coverage that was supplied by
TestCredentialRequest_OtherwiseValidRequestWithRealTokenShouldFailWhenTheClusterIsNotCapable
is now provided by an assertion at the end of TestImpersonationProxy,
so delete the duplicate test which was failing on GKE because the
impersonation proxy is now active by default on GKE.
When testing that the impersonation proxy port was closed there
is no need to include credentials in the request. At the point when
we want to test that the impersonation proxy port is closed, it is
possible that we cannot perform a TokenCredentialRequest to get a
credential either.
Also add a new assertion that the TokenCredentialRequest stops handing
out credentials on clusters which have no successful strategies.
Signed-off-by: Monis Khan <mok@vmware.com>
To make an impersonation request, first make a TokenCredentialRequest
to get a certificate. That cert will either be issued by the Kube
API server's CA or by a new CA specific to the impersonator. Either
way, you can then make a request to the impersonator and present
that client cert for auth and the impersonator will accept it and
make the impesonation call on your behalf.
The impersonator http handler now borrows some Kube library code
to handle request processing. This will allow us to more closely
mimic the behavior of a real API server, e.g. the client cert
auth will work exactly like the real API server.
Signed-off-by: Monis Khan <mok@vmware.com>
The thing we're waiting for is mostly that DNS is resolving, the ELB is listening, and connections are making it to the proxy.
Signed-off-by: Matt Moyer <moyerm@vmware.com>
All controller unit tests were accidentally using a timeout context
for the informers, instead of a cancel context which stays alive until
each test is completely finished. There is no reason to risk
unpredictable behavior of a timeout being reached during an individual
test, even though with the previous 3 second timeout it could only be
reached on a machine which is running orders of magnitude slower than
usual, since each test usually runs in about 100-300 ms. Unfortunately,
sometimes our CI workers might get that slow.
This sparked a review of other usages of timeout contexts in other
tests, and all of them were increased to a minimum value of 1 minute,
under the rule of thumb that our tests will be more reliable on slow
machines if they "pass fast and fail slow".
This time, don't use the Squid proxy if the cluster supports real external load balancers (as in EKS/GKE/AKS).
Signed-off-by: Matt Moyer <moyerm@vmware.com>
This is more than an automatic merge. It also includes a rewrite of the CredentialIssuer API impersonation proxy fields using the new structure, and updates to the CLI to account for that new API.
Signed-off-by: Matt Moyer <moyerm@vmware.com>
I think this is another aspect of the test flakes we're trying to fix. This matters especially for the "Multiple Pinnipeds" test environment where two copies of the test suite are running concurrently.
Signed-off-by: Matt Moyer <moyerm@vmware.com>
If the test is run immediately after the Concierge is installed, the API server can still have broken discovery data and return an error on the first call.
This commit adds a retry loop to attempt this first kubectl command for up to 60s before declaring failure.
The subsequent tests should be covered by this as well since they are not run in parallel.
Signed-off-by: Matt Moyer <moyerm@vmware.com>
We don't support using the impersonate headers through the impersonation
proxy yet, so this integration test is a negative test which asserts
that we get an error.
- The CA cert will end up in the end user's kubeconfig on their client
machine, so if it changes they would need to fetch the new one and
update their kubeconfig. Therefore, we should avoid changing it as
much as possible.
- Now the controller writes the CA to a different Secret. It writes both
the cert and the key so it can reuse them to create more TLS
certificates in the future.
- For now, it only needs to make more TLS certificates if the old
TLS cert Secret gets deleted or updated to be invalid. This allows
for manual rotation of the TLS certs by simply deleting the Secret.
In the future, we may want to implement some kind of auto rotation.
- For now, rotation of both the CA and TLS certs will also happen if
you manually delete the CA Secret. However, this would cause the end
users to immediately need to get the new CA into their kubeconfig,
so this is not as elegant as a normal rotation flow where you would
have a window of time where you have more than one CA.
Should work on cluster which have:
- load balancers not supported, has squid proxy (e.g. kind)
- load balancers supported, has squid proxy (e.g. EKS)
- load balancers supported, no squid proxy (e.g. GKE)
When testing with a load balancer, call the impersonation proxy through
the load balancer.
Also, added a new library.RequireNeverWithoutError() helper.
Signed-off-by: Margo Crawford <margaretc@vmware.com>
Also update concierge_impersonation_proxy_test.go integration test
to use real TLS when calling the impersonator.
Signed-off-by: Ryan Richard <richardry@vmware.com>
There is a new feature in 1.20 that creates a ConfigMap by default in each namespace: https://github.com/kubernetes/kubernetes/blob/master/CHANGELOG/CHANGELOG-1.20.md#introducing-rootcaconfigmap
This broke this test because it assumed that all the ConfigMaps in the ephemeral test namespace were those created by the test code. The fix is to add a test label and rewrite our assertions to filter with it.
Signed-off-by: Matt Moyer <moyerm@vmware.com>
Also:
- Shut down the informer correctly in
concierge_impersonation_proxy_test.go
- Remove the t.Failed() checks which avoid cleaning up after failed
tests. This was inconsistent with how most of the tests work, and
left cruft on clusters when a test failed.
Signed-off-by: Ryan Richard <richardry@vmware.com>
Also:
- Changed base64 encoding of impersonator bearer tokens to use
`base64.StdEncoding` to make it easier for users to manually
create a token using the unix `base64` command
- Test the headers which are and are not passed through to the Kube API
by the impersonator more carefully in the unit tests
- More WIP on concierge_impersonation_proxy_test.go
Signed-off-by: Margo Crawford <margaretc@vmware.com>
This change adds a new virtual aggregated API that can be used by
any user to echo back who they are currently authenticated as. This
has general utility to end users and can be used in tests to
validate if authentication was successful.
Signed-off-by: Monis Khan <mok@vmware.com>
