Ensuring that CSI drivers get deployed for testing exactly as intended
was problematic because the original .yaml files had to be converted
into code. e2e/manifest helped a bit, but not enough:
- could not load all entities
- didn't handle loading .yaml files with multiple entities
- actually creating and deleting entities still had to be done in tests
The new framework utility code handles all of that, including the
tricky cleanup operation that tests got wrong (AfterEach does not get
called after test failures!).
In addition, it is ensuring that each test gets its own instance of the
entities.
The PSP role binding for hostpath is now necessary because we switch
from creating a pod directly to creation via the StatefulSet
controller, which runs with less privileges.
Without this, the hostpath test runs into these errors in the
kubernetes-e2e-gce job:
Oct 19 16:30:09.225: INFO: At 2018-10-19 16:25:07 +0000 UTC - event for csi-hostpath-attacher: {statefulset-controller } FailedCreate: create Pod csi-hostpath-attacher-0 in StatefulSet csi-hostpath-attacher failed error: pods "csi-hostpath-attacher-0" is forbidden: unable to validate against any pod security policy: []
Oct 19 16:30:09.225: INFO: At 2018-10-19 16:25:07 +0000 UTC - event for csi-hostpath-provisioner: {statefulset-controller } FailedCreate: create Pod csi-hostpath-provisioner-0 in StatefulSet csi-hostpath-provisioner failed error: pods "csi-hostpath-provisioner-0" is forbidden: unable to validate against any pod security policy: []
Oct 19 16:30:09.225: INFO: At 2018-10-19 16:25:07 +0000 UTC - event for csi-hostpathplugin: {daemonset-controller } FailedCreate: Error creating: pods "csi-hostpathplugin-" is forbidden: unable to validate against any pod security policy: []
The extra role binding is silently ignored on clusters which don't
have this particular role.
In some storage tests, kubelet is stopped first and the test check node
NotReady state. However, if it fails to have this state, kubelet could
not be restarted because the defer function is placed after the stop
kubelet command. This PR fixes this issue.
Use the same pattern everywhere in the e2e test
harness, use busybox (from dockerhub) instead
of using the one from k8s.gcr.io registry.
Change-Id: I57c3b867408c1f9478a8909c26744ea0368ff003
This set of e2e tests is to confirm that persistent volume works well for all volumeModes.
Coverage of the tests are shown in the figure of [Test cases], below.
Once implementation policy is confirmed to be good, we can add plugins and test cases to this.
[Test cases]
# plugin volumeMode Test case Expectation
--- ---------- -------------- ------------------------------------------------------ ------------
1 iSCSI Block (a) Create Pod with PV and confirm Read/Write to PV Success
2 iSCSI FileSystem (a) Create Pod with PV and confirm Read/Write to PV Success
3 RBD Block (a) Create Pod with PV and confirm Read/Write to PV Success
4 RBD FileSystem (a) Create Pod with PV and confirm Read/Write to PV Success
5 CephFS Block (a) Create Pod with PV and confirm Read/Write to PV Fail
6 CephFS FileSystem (a) Create Pod with PV and confirm Read/Write to PV Success
7 NFS Block (a) Create Pod with PV and confirm Read/Write to PV Fail
8 NFS FileSystem (a) Create Pod with PV and confirm Read/Write to PV Success
fixes: #56803
This PR is the first part of redesign of volume reconstruction work. The
changes include
1. Remove dependency on volume spec stored in actual state for volume
cleanup process (UnmountVolume and UnmountDevice)
Modify AttachedVolume struct to add DeviceMountPath so that volume
unmount operation can use this information instead of constructing from
volume spec
2. Modify reconciler's volume reconstruction process (syncState). Currently workflow
is when kubelet restarts, syncState() is only called once before
reconciler starts its loop.
a. If volume plugin supports reconstruction, it will use the
reconstructed volume spec information to update actual state as before.
b. If volume plugin cannot support reconstruction, it will use the
scanned mount path information to clean up the mounts.
In this PR, all the plugins still support reconstruction (except
glusterfs), so reconstruction of some plugins will still have issues.
The next PR will modify those plugins that cannot support reconstruction
well.
This PR addresses issue #52683, #54108 (This PR includes the changes to
update devicePath after local attach finishes)
