Some of these tests could not be run previously, especially on Windows
Docker containers. But now, by using Windows Containerd, we can finally
run them:
- HostNetwork=true tests: This can now be enabled on Windows Privileged Containers.
- /etc/hosts related tests: These were not supported because it required single
file mappings, which is possible in Containerd.
- termination message as non-root user: Requires RunAsUsername, and single file
mappings.
For some test failures, checking the pod logs could potentially
yield some interesting information, which could be used to further
investigate certain failures / flakes (for example, if there are some
networking issues, we could at least see if requests reach the containers,
(agnhost logs the connections / requests), or if there were any
other issues during the container's startup).
This fixes a problem when using the framework helper
e2epod.CreateExecPodOrFail() more than once in the same test.
The problem is that this function was creating pods with both the
pod.Name and pod.GenerateName set.
The second pod failed to be created with a 500 with Reason ServerTimeout
indicating a unique name could not be found in the time allotted,
xref https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.19/
Creates a few agnhost related functions that creates agnhost
pods / containers for general purposes.
The following commits will refactor tests to use those functions.
Some of the tests are negative test cases which are supposed to ensure that those
invalid usecases are handled properly.
However, some of the tests are false positives, they can pass due to various reasons.
One such example is: "should fail substituting values in a volume subpath with absolute path".
This test can pass if:
- the Pod cannot start due to various reasons (e.g.: the container image cannot be pulled or does
not exist).
- the Pod ran to completion, even though the container was not supposed to start in the first place.
The log of a flake test says
"Pod did not start running: timed out waiting for the condition"
but it is hard to know what is actual status of the pod.
So this adds debugging message to know that.
LaunchHostExecPod() is called only from e2e network.
So it is not necessary to keep the function as a part of e2e framework.
This moves it to the place which calls the function.
The following functions are used locally in e2e framework subpackages.
- RunSSHCommandViaBastion
- MakeNginxPod
- LogPodTerminationMessages
- CheckPodsCondition
- SetNodeAffinityRequirement
This renames them to clarify them as local ones.
The function is used at e2e framework util module only.
So this moves the function to the module for trying to remove
dependencies to subpackages from core e2e framework.
Moving pod related functions from e2e/framework/pv_util.go to
e2e/framework/pod in order to allow refactoring of pv_util.go into its
own package.
Signed-off-by: alejandrox1 <alarcj137@gmail.com>
The core e2e framework contains BusyBoxImage. The sub e2e "pod"
framework also contains it but not used at all.
So this removes this unused BusyBoxImage for code cleanup.
Quite a few images are only used a few times in a few tests. Thus,
the images are being centralized into the agnhost image, reducing
the number of images that have to be pulled and used.
This PR replaces the usage of the following images with agnhost:
- fakegitserver
- hostexec
- liveness
- logs-generator
- no-snat-test
- no-snat-test-proxy
- port-forward-tester
