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Attach Detach Controller Business Logic
This PR adds the meat of the attach/detach controller proposed in #20262.
The PR splits the in-memory cache into a desired and actual state of the world.
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Flake 21484: retrieve pod log during e2e error
Print the pod log when an error occurs in
> Proxy version 1 should proxy through a service and a pod [Conformance]
e2e test. This will help to understand flake https://github.com/kubernetes/kubernetes/issues/21484 better.
Many tests expect all kube-system pods to be running and ready. The newly
added image prepull add-on pod can in the "succeeded" state. This commit fixes
the tests to allow kube-system pods to be succeeded.
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Downward API implementation for resources limits and requests
This is an implementation of Downward API for resources limits and requests, and it works with environment variables and volume plugin.
This is based on proposal https://github.com/kubernetes/kubernetes/pull/24051. This implementation follows API with magic keys approach as discussed in the proposal.
@kubernetes/rh-cluster-infra
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Prepull images in e2e
Quick and dirty image puller because the SQ stalled multiple times just *today* on image pull flake (https://github.com/kubernetes/kubernetes/issues/25277).
@kubernetes/sig-node @kubernetes/sig-testing wdyt?
Split controller cache into actual and desired state of world.
Controller will only operate on volumes scheduled to nodes that
have the "volumes.kubernetes.io/controller-managed-attach" annotation.
- Add junit test reported
- Write etcd.log, kubelet.log and kube-apiserver.log to files instead of stdout
- Scp artifacts to the jenkins WORKSPACE
Fixes#25966
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in e2e test, when kubectl exec fails to find the container to run a command, it should retry
fix#26076
Without retrying upon "container not found" error, `Pod Disks` test failed on the following error:
```console
[k8s.io] Pod Disks
should schedule a pod w/two RW PDs both mounted to one container, write to PD, verify contents, delete pod, recreate pod, verify contents, and repeat in rapid succession [Slow]
/go/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/test/e2e/pd.go:271
[BeforeEach] [k8s.io] Pod Disks
/go/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/test/e2e/framework/framework.go:108
STEP: Creating a kubernetes client
May 23 19:18:02.254: INFO: >>> TestContext.KubeConfig: /root/.kube/config
STEP: Building a namespace api object
STEP: Waiting for a default service account to be provisioned in namespace
[BeforeEach] [k8s.io] Pod Disks
/go/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/test/e2e/pd.go:69
[It] should schedule a pod w/two RW PDs both mounted to one container, write to PD, verify contents, delete pod, recreate pod, verify contents, and repeat in rapid succession [Slow]
/go/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/test/e2e/pd.go:271
STEP: creating PD1
May 23 19:18:06.678: INFO: Successfully created a new PD: "rootfs-e2e-11dd5f5b-211b-11e6-a3ff-b8ca3a62792c".
STEP: creating PD2
May 23 19:18:11.216: INFO: Successfully created a new PD: "rootfs-e2e-141f062d-211b-11e6-a3ff-b8ca3a62792c".
May 23 19:18:11.216: INFO: PD Read/Writer Iteration #0
STEP: submitting host0Pod to kubernetes
W0523 19:18:11.279910 4984 request.go:347] Field selector: v1 - pods - metadata.name - pd-test-16d3653c-211b-11e6-a3ff-b8ca3a62792c: need to check if this is versioned correctly.
STEP: writing a file in the container
May 23 19:18:39.088: INFO: Running '/srv/dev/kubernetes/_output/dockerized/bin/linux/amd64/kubectl kubectl --server=https://130.211.199.187 --kubeconfig=/root/.kube/config exec --namespace=e2e-tests-pod-disks-3t3g8 pd-test-16d3653c-211b-11e6-a3ff-b8ca3a62792c -c=mycontainer -- /bin/sh -c echo '1394466581702052925' > '/testpd1/tracker0''
May 23 19:18:40.250: INFO: Wrote value: "1394466581702052925" to PD1 ("rootfs-e2e-11dd5f5b-211b-11e6-a3ff-b8ca3a62792c") from pod "pd-test-16d3653c-211b-11e6-a3ff-b8ca3a62792c" container "mycontainer"
STEP: writing a file in the container
May 23 19:18:40.251: INFO: Running '/srv/dev/kubernetes/_output/dockerized/bin/linux/amd64/kubectl kubectl --server=https://130.211.199.187 --kubeconfig=/root/.kube/config exec --namespace=e2e-tests-pod-disks-3t3g8 pd-test-16d3653c-211b-11e6-a3ff-b8ca3a62792c -c=mycontainer -- /bin/sh -c echo '1740704063962701662' > '/testpd2/tracker0''
May 23 19:18:41.433: INFO: Wrote value: "1740704063962701662" to PD2 ("rootfs-e2e-141f062d-211b-11e6-a3ff-b8ca3a62792c") from pod "pd-test-16d3653c-211b-11e6-a3ff-b8ca3a62792c" container "mycontainer"
STEP: reading a file in the container
May 23 19:18:41.433: INFO: Running '/srv/dev/kubernetes/_output/dockerized/bin/linux/amd64/kubectl kubectl --server=https://130.211.199.187 --kubeconfig=/root/.kube/config exec --namespace=e2e-tests-pod-disks-3t3g8 pd-test-16d3653c-211b-11e6-a3ff-b8ca3a62792c -c=mycontainer -- cat /testpd1/tracker0'
May 23 19:18:42.585: INFO: Read file "/testpd1/tracker0" with content: 1394466581702052925
STEP: reading a file in the container
May 23 19:18:42.585: INFO: Running '/srv/dev/kubernetes/_output/dockerized/bin/linux/amd64/kubectl kubectl --server=https://130.211.199.187 --kubeconfig=/root/.kube/config exec --namespace=e2e-tests-pod-disks-3t3g8 pd-test-16d3653c-211b-11e6-a3ff-b8ca3a62792c -c=mycontainer -- cat /testpd2/tracker0'
May 23 19:18:43.779: INFO: Read file "/testpd2/tracker0" with content: 1740704063962701662
STEP: deleting host0Pod
May 23 19:18:44.048: INFO: PD Read/Writer Iteration #1
STEP: submitting host0Pod to kubernetes
W0523 19:18:44.132475 4984 request.go:347] Field selector: v1 - pods - metadata.name - pd-test-16d3653c-211b-11e6-a3ff-b8ca3a62792c: need to check if this is versioned correctly.
STEP: reading a file in the container
May 23 19:18:45.186: INFO: Running '/srv/dev/kubernetes/_output/dockerized/bin/linux/amd64/kubectl kubectl --server=https://130.211.199.187 --kubeconfig=/root/.kube/config exec --namespace=e2e-tests-pod-disks-3t3g8 pd-test-16d3653c-211b-11e6-a3ff-b8ca3a62792c -c=mycontainer -- cat /testpd1/tracker0'
May 23 19:18:46.290: INFO: error running kubectl exec to read file: exit status 1
stdout=
stderr=error: error executing remote command: error executing command in container: container not found ("mycontainer")
)
May 23 19:18:46.290: INFO: Error reading file: exit status 1
May 23 19:18:46.290: INFO: Unexpected error occurred: exit status 1
```
Now I've run this fix on e2e pd test 5 times and no longer see any failure
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Don't dump everything in kubemarks
Don't dump all events etc. in kubemark failures, those are useless anyway with that amount of data.
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Fix panic in auth test failure
I got a spurious failure in the webhook integration test, but couldn't see the error returned because a panic was hit that assumed a body was always returned with the response
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E2e tests for GKE cluster with local SSD.
The test cover node pool with local SSD creation and scheduling a pod that writes and reads from it. Pod access local disk via hostPath.
```release-note
E2e tests for GKE cluster with local SSD.
-OR-
```
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kubelet/cadvisor: Refactor cadvisor disk stat/usage interfaces.
basically
1) cadvisor struct will know what runtime the kubelet is, passed in via additional argument to New()
2) rename cadvisor wrapper function to DockerImagesFsInfo() to ImagesFsInfo() and have linux implementation choose a label based on the runtime inside the cadvisor struct
2a) mock/fake/unsupported modified to take the same additional argument in New()
3) kubelet's wrapper for the cadvisor wrapper is renamed in parallel
4) make all tests use new interface
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Cache Webhook Authentication responses
Add a simple LRU cache w/ 2 minute TTL to the webhook authenticator.
Kubectl is a little spammy, w/ >= 4 API requests per command. This also prevents a single unauthenticated user from being able to DOS the remote authenticator.
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Extend secrets volumes with path control
As per [1] this PR extends secrets mapped into volume with:
* key-to-path mapping the same way as is for configmap. E.g.
```
{
"apiVersion": "v1",
"kind": "Pod",
"metadata": {
"name": "mypod",
"namespace": "default"
},
"spec": {
"containers": [{
"name": "mypod",
"image": "redis",
"volumeMounts": [{
"name": "foo",
"mountPath": "/etc/foo",
"readOnly": true
}]
}],
"volumes": [{
"name": "foo",
"secret": {
"secretName": "mysecret",
"items": [{
"key": "username",
"path": "my-username"
}]
}
}]
}
}
```
Here the ``spec.volumes[0].secret.items`` added changing original target ``/etc/foo/username`` to ``/etc/foo/my-username``.
* secondly, refactoring ``pkg/volumes/secrets/secrets.go`` volume plugin to use ``AtomicWritter`` to project a secret into file.
[1] https://github.com/kubernetes/kubernetes/blob/master/docs/design/configmap.md#changes-to-secret
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Check status of framework.CheckPodsRunningReady
Check status of framework.CheckPodsRunningReady and fail test if it's false, instead of silently
ignoring the failure.
This doesn't fix whatever is causing the pod not to start in #17523 but it does fail the test as soon as it detects the pod didn't start, instead of allowing the testing to proceed.
cc @kubernetes/sig-testing @spxtr @ixdy @kubernetes/rh-cluster-infra
I removed the netexec and goproxy pods from the proxy exec test. Instead
it now runs kubectl locally and the proxy is running in-process. Since
Go won't proxy for localhost requests, this test cannot pass if the API
server is local. However it was already disabled for local clusters.
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SchedulerPredicates e2e test: be more verbose about requested resource
When ``validates resource limits of pods that are allowed to run [Conformance]`` test is run, logs could give more information about requested resource and say it is for cpu and in mili units.
cpu is stored in m units here:
```
nodeToCapacityMap[node.Name] = capacity.MilliValue()
```
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Add a timeout to the node e2e Ginkgo test runner
Also add a few debugging statements to indicate progress.
Should help prevent #25639, since we'll timeout tests before Jenkins times out the build.
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gcr.io/google_containers/mounttest: use Stat instead of Lstat
The current ``mt.go`` implementation use ``os.Lstat`` instead of ``os.Stat`` which does not read symlinks. Since implementation of ``AtomicWriter`` (which relies on existence of symlinks), the updated implementation of secret volume using the ``AtomicWriter`` can not be tested for secret file permission. Replacing ``Lstat`` with ``Stat`` allows to read symlinks and return permissions of target file. The change affects ``--file_perm`` and ``--file_mode`` options only.
``mounttest`` image is currently used by:
##### downwardapi_volume.go
- e2e: Downward API volume
- version: 0.6
- args: --file_content, --break_on_expected_content, --retry_time, --file_content_in_loop
##### empty_dir.go
- e2e: EmptyDir volumes
- version: 0.5
- args: --file_perm, --file_perm, ...
##### host_path.go
- e2e: hostPath
- version: 0.6
- args: --file_mode, ...
##### configmap.go
- e2e: ConfigMap
- version: 0.6
- args: --file_content, --break_on_expected_content, --retry_time, --file_content_in_loop
##### service_accounts.go
- e2e: ServiceAccounts
- version: 0.2
- args: --file_content
Some of the e2e tests use at least one of the affected options. Locally, I have updated all version of mounttest images to 0.7. All e2e tests pass with the new image.
- create 100 PV, ranging from 0 to 99GB; create 1 PVC to claim 50GB. Verify only one PV is bound and rest are pending
- create 2 PVs with different access modes (RWM, RWO), 1 PVC to claim RWM PV. Verify RWM is bound and RWO is not bound.
Signed-off-by: Huamin Chen <hchen@redhat.com>
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Refactor persistent volume controller
Here is complete persistent controller as designed in https://github.com/pmorie/pv-haxxz/blob/master/controller.go
It's feature complete and compatible with current binder/recycler/provisioner. No new features, it *should* be much more stable and predictable.
Testing
--
The unit test framework is quite complicated, still it was necessary to reach reasonable coverage (78% in `persistentvolume_controller.go`). The untested part are error cases, which are quite hard to test in reasonable way - sure, I can inject a VersionConflictError on any object update and check the error bubbles up to appropriate places, but the real test would be to run `syncClaim`/`syncVolume` again and check it recovers appropriately from the error in the next periodic sync. That's the hard part.
Organization
---
The PR starts with `rm -rf kubernetes/pkg/controller/persistentvolume`. I find it easier to read when I see only the new controller without old pieces scattered around.
[`types.go` from the old controller is reused to speed up matching a bit, the code looks solid and has 95% unit test coverage].
I tried to split the PR into smaller patches, let me know what you think.
~~TODO~~
--
* ~~Missing: provisioning, recycling~~.
* ~~Fix integration tests~~
* ~~Fix e2e tests~~
@kubernetes/sig-storage
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Fixes#15632
The key to path mapping allows pod to specify different name (thus location) of each secret.
At the same time refactor the volume plugin to use AtomicWritter to project secrets to files in a volume.
Update e2e Secrets test, the secret file permission has changed from 0444 to 0644
Remove TestPluginIdempotent as the AtomicWritter is responsible for secret creation
Yu-Ju Hong
