When --cgroups-per-qos=false (default is true), kubelet sets pod
container management to podContainerManagerNoop implementation and
GetPodContainerName() returns '/' as cgroup parent (default cgroup root).
(1) In case of 'systemd' cgroup driver, '/' is invalid parent as
docker daemon expects '.slice' suffix and throws this error:
'cgroup-parent for systemd cgroup should be a valid slice named as \"xxx.slice\"'
(5fc12449d8/daemon/daemon_unix.go (L618))
'/' corresponds to '-.slice' (root slice) in systemd but I don't think
we want to assign root slice instead of runtime specific default value.
In case of docker runtime, this will be 'system.slice'
(e2593239d9/daemon/oci_linux.go (L698))
(2) In case of 'cgroupfs' cgroup driver, '/' is valid parent but I don't
think we want to assign root instead of runtime specific default value.
In case of docker runtime, this will be '/docker'
(e2593239d9/daemon/oci_linux.go (L695))
Current fix will not set the cgroup parent when --cgroups-per-qos is disabled.
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Do not attempt to convert nil object during DELETE webhook admission
Fixes#66412
```release-note
fixes a panic when using a mutating webhook admission plugin with a DELETE operation
```
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Fix a typo in csiPlugin comment
**What this PR does / why we need it**:
Fix a typo in csiPlugin comment.
**Release note**:
```release-note
NONE
```
Automatic merge from submit-queue (batch tested with PRs 66098, 66389, 66400, 66413, 66378). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
Only build generators for building platform
**What this PR does / why we need it**:
The code generator binaries are built using the `hack/make-rules/build.sh` script. If you run a command like `make kubectl KUBE_BUILD_PLATFORMS=darwin/amd64` that passes a `KUBE_BUILD_PLATFORMS` that *doesn't* include the building platform, the code generator binaries will be built on the target platform, but NOT the building platform (which doesn't make sense). Also, if you specify `make cross` it will build the code generators for *all* platforms, which is also unnecessary.
This change ensures that `KUBE_BUILD_PLATFORMS` is an empty string when building the code generators, which ensures that they will only be built for the building platform.
This also fixes an issue when using the linux-based cross build container to target a specific platform other than linux/amd64.
Example command that is broken: `build/run.sh make kubectl KUBE_BUILD_PLATFORMS=darwin/amd64`
**Release note**:
```release-note
NONE
```
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GCE: Return correct error type and HTTP Status code for operation errors
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes#66399
**Special notes for your reviewer**:
/assign bowei, zihongz, rramkumar
/cc bowei
**Release note**:
```release-note
GCE: Fixes loadbalancer creation and deletion issues appearing in 1.10.5.
```
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verify-generated-docs: Use exit code rather than comparison to empty …
…string
Checking the exit code rather than the empty string has the advantage
that you can identify what was found (comparison consumes the string, so
it's not printed). It makes debugging much easier when something is wrong.
One of my pull-request is failing saying that I need to run update, but it keeps saying that even after I ran update. And since I can't see what's wrong, it's quite hard to debug.
**What this PR does / why we need it**:
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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Add initial availability zones support for Azure nodes
**What this PR does / why we need it**:
The first part of [Azure Availability Zone feature](https://github.com/kubernetes/features/issues/586).
This PR adds initial availability zone (AZ) support for Azure nodes. With this PR, Azure nodes with AZ will have label `failure-domain.beta.kubernetes.io/zone=<region>-<zoneID>`, e.g. `southeastasia-1`.
It also updates instance metadata api-version to 2017-12-01, which is required for AZ.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #
**Special notes for your reviewer**:
VirtualMachineScaleSetVM doesn't have AZ info yet. It will be supported later after new Azure Go SDK releases.
**Release note**:
```release-note
Azure nodes with availability zone now will have label `failure-domain.beta.kubernetes.io/zone=<region>-<zoneID>`.
```
/kind feature
/sig azure
/assign @brendandburns @khenidak @andyzhangx
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Re-design equivalence class cache to two level cache
**What this PR does / why we need it**:
The current ecache introduced a global lock across all the nodes, and this patch tried to assign ecache per node to eliminate that global lock. The improvement of scheduling performance and throughput are both significant.
**CPU Profile Result**
Machine: 32-core 60GB GCE VM
1k nodes 10k pods bench test (we've highlighted the critical function):
1. Current default scheduler with ecache enabled:
2. Current default scheduler with ecache disabled:
3. Current default scheduler with this patch and ecache enabled:
**Throughput Test Result**
1k nodes 3k pods `scheduler_perf` test:
Current default scheduler, ecache is disabled:
```bash
Minimal observed throughput for 3k pod test: 200
PASS
ok k8s.io/kubernetes/test/integration/scheduler_perf 30.091s
```
With this patch, ecache is enabled:
```bash
Minimal observed throughput for 3k pod test: 556
PASS
ok k8s.io/kubernetes/test/integration/scheduler_perf 11.119s
```
**Design and implementation:**
The idea is: we re-designed ecache into a "two level cache".
The first level cache holds the global lock across nodes and sync is needed only when node is added or deleted, which is of much lower frequency.
The second level cache is assigned per node and its lock is restricted to per node level, thus there's no need to bother the global lock during whole predicate process cycle. For more detail, please check [the original discussion](https://github.com/kubernetes/kubernetes/issues/63784#issuecomment-399848349).
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes#63784
**Special notes for your reviewer**:
~~Tagged as WIP to make sure this does not break existing code and tests, we can start review after CI is happy.~~
**Release note**:
```release-note
Re-design equivalence class cache to two level cache
```
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fixes operation for "create on update"
**What this PR does / why we need it**:
Set operation to `admission.Create` for create-on-update requests.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes#65553
**Special notes for your reviewer**:
**Release note**:
```release-note
Checks CREATE admission for create-on-update requests instead of UPDATE admission
```
Automatic merge from submit-queue (batch tested with PRs 65771, 65849). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
fix kube-aggregator dailer
Fixes: https://github.com/kubernetes/kubernetes/issues/65848
**What this PR does / why we need it**:
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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Add a new conversion path to replace GenericConversionFunc
reflect.Call is very expensive. We currently use a switch block as part of AddGenericConversionFunc to avoid the bulk of top level a->b conversion for our primary types which is hand-written. Instead of having these be handwritten, we should generate them.
The pattern for generating them looks like:
```
scheme.AddConversionFunc(&v1.Type{}, &internal.Type{}, func(a, b interface{}, scope conversion.Scope) error {
return Convert_v1_Type_to_internal_Type(a.(*v1.Type), b.(*internal.Type), scope)
})
```
which matches AddDefaultObjectFunc (which proved out the approach last year). The
conversion machinery should then do a simple map lookup based on the incoming types and invoke the function. Like defaulting, it's up to the caller to match the types to arguments, which we do by generating this code. This bypasses reflect.Call and in the future allows Golang mid-stack inlining to optimize this code.
As part of this change I strengthened registration of custom functions to be generated instead of hand registered, and also strengthened error checking of the generator when it sees a manual conversion to error out. Since custom functions are automatically used by the generator, we don't really have a case for not registering the functions.
Once this is fully tested out, we can remove the reflection based path and the old registration methods, and all conversion will work from point to point methods (whether generated or custom).
Much of the need for the reflection path has been removed by changes to generation (to omit fields) and changes to Go (to make assigning equivalent structs easy).
```release-note
NONE
```
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Replace info log with warn log
**What this PR does / why we need it**:
Replace info log with warn log
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes#59356
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
Automatic merge from submit-queue (batch tested with PRs 58487, 63666). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
use subtest for table units (pkg/scheduler/factory)
**What this PR does / why we need it**: Update scheduler's unit table tests to use subtest
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
**Special notes for your reviewer**:
breaks up PR: https://github.com/kubernetes/kubernetes/pull/63281
/ref #63267
**Release note**:
```release-note
This PR will leverage subtests on the existing table tests for the scheduler units.
Some refactoring of error/status messages and functions to align with new approach.
```
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Update kubectl certificate deny message
**What this PR does / why we need it**:
Updates message for the `kubectl certificate deny` command to `denied` instead of `approved`.
**Release note**:
```release-note
NONE
```
Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
Cleanup & fix PodSecurityPolicy field path usage
I noticed the field paths were incorrect for a bunch of PodSecurityPolicy validation errors. This PR fixes the errors, and makes it more explicit what the paths are pointing to in some cases.
**Release note**:
```release-note
NONE
```
/kind cleanup
/sig auth
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Start cloudResourceSyncsManager before getNodeAnyWay (initializeModules) to avoid kubelet getting stuck in retrieving node addresses from a cloudprovider.
**What this PR does / why we need it**:
This PR starts cloudResourceSyncsManager before getNodeAnyWay (initializeModules) otherwise kubelet gets stuck in setNodeAddress->kl.cloudResourceSyncManager.NodeAddresses() (https://github.com/kubernetes/kubernetes/blob/master/pkg/kubelet/kubelet_node_status.go#L470) forever retrieving node addresses from a cloud provider, and due to this cloudResourceSyncsManager will not be started at all.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #
**Special notes for your reviewer**:
**Release note**:
```release-note
None
```
@ingvagabund @derekwaynecarr @sjenning @kubernetes/sig-node-bugs
Automatic merge from submit-queue (batch tested with PRs 66175, 66324, 65828, 65901, 66350). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
Hpa improv refactor replica calc test
**What this PR does / why we need it**: prepareTestClient generates 4 fake clients, using replicaCalcTestCase object. This PR extracts a separate helper for generating each fake independently.
**Which issue(s) this PR fixes**
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
Automatic merge from submit-queue (batch tested with PRs 66175, 66324, 65828, 65901, 66350). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
Chop computeReplicasForMetrics to smaller pieces
Split computeReplicasForMetrics function into smaller pieces.
**Release note**:
```release-note
NONE
```
Automatic merge from submit-queue (batch tested with PRs 66175, 66324, 65828, 65901, 66350). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
Remove the Heapster/InfluxDB test
Heapster is now deprecated, and we shouldn't be testing Influx
functionality here anyway (that test belongs in the Heapster repo at
best anyway).
**Release note**:
```release-note
NONE
```
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fix a panic due to assignment to nil map
**What this PR does / why we need it**:
fix a panic due to assignment to nil map
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
**Special notes for your reviewer**:
**Release note**:
```release-note
Fixed a panic in the node status update logic when existing node has nil labels.
```
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bump ingress version to 1.2
```release-note
Bump Ingress-gce version to 1.2.0
```
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Fix test failure when executed using build/run.sh
**What this PR does / why we need it**:
The container used by build/run.sh doesn't necessarily have an entry in
/etc/passwd for the host user's uid, and this missing data causes
`whoami` to fail.
Switch `whoami` to `id -un` to fall back to the uid if the /etc/passwd
entry is missing.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes#66340
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
check for crictl executable only for CRI runtime
**What this PR does / why we need it**:
crictl is not used for docker runtime, so InPathCheck check can be skipped for docker.
**Release note**:
```release-note
NONE
```
The container used by build/run.sh doesn't necessarily have an entry in
/etc/passwd for the host user's uid, and this missing data causes
`whoami` to fail.
Switch `whoami` to `id -un` to fall back to the uid if the /etc/passwd
entry is missing.
Signed-off-by: Andy Goldstein <andy.goldstein@gmail.com>
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Bump version of event-exporter.
```release-note
Bump event-exporter to 0.2.2 to pick up security fixes.
```
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change not valid to invalid
**What this PR does / why we need it**:
change not valid to invalid
```release-note
NONE
```
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replace session.New with NewSession and remove unused variable
**What this PR does / why we need it**:
replace session.New with NewSession and remove unused variable
found in #66303
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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persistentvolume: fix spelling of storageClasseName
**What this PR does / why we need it**:
Fixed spelling of error in 'pv_controller', was 'storageClasseName', is
now 'storageClassName'.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #
**Special notes for your reviewer**:
Just fixes the spelling in one of the errors returned in the persistent volume controller.
**Release note**:
```release-note
```
Automatic merge from submit-queue (batch tested with PRs 64690, 66174). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
Check presence of /dev/disk/by-id before reading it in ScaleIO
**What this PR does / why we need it**:
In certain OS environments, like RHEL 7.4 using Xen PV driver `xen_blkfront` for boot and data disks, the path `/dev/disk/by-id` does not exist in the OS post boot. When trying to dynamically provision PVs from a ScaleIO storageclass in such an environment, ScaleIO fails when trying to create the PV with:
```
E0711 08:02:50.441964 25246 sio_client.go:342] scaleio: failed to ReadDir /dev/disk/by-id: open /dev/disk/by-id: no such file or directory
E0711 08:02:50.441989 25246 sio_volume.go:123] scaleio: setup of volume k8svol-282bd4fa84d: open /dev/disk/by-id: no such file or directory
```
This PR avoids the above failure by first checking for the presence of `/dev/disk/by-id` before attempting to read from it as done in other drivers like gce_pd.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
/sig storage
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Fix TestWantsExternalKubeClientSet describe clientset typo
Signed-off-by: Yuanbin.Chen <cybing4@gmail.com>
**What this PR does / why we need it**:
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
apimachinery/pkg/runtime/doc: Split list into paragraphs
[Godoc uses go/doc][1] to convert comments to HTML, and go/doc [has no markup for lists][2]. With the previous comment, the lack of paragraph-splitting lines between the list entries was leading to entries 0, 1, etc. being formatted as a single paragraph. And the hanging indents for entry 3, etc. were leading to formatting within `<pre>` blocks:
```console
$ curl -s https://godoc.org/k8s.io/apimachinery/pkg/runtime | grep -B1 -A7 'Your API objects'
<p>
0. Your API objects have a common metadata struct member, TypeMeta.
1. Your code refers to an internal set of API objects.
2. In a separate package, you have an external set of API objects.
3. The external set is considered to be versioned, and no breaking
</p>
<pre>changes are ever made to it (fields may be added but not changed
or removed).
</pre>
```
```release-note
NONE
```
[1]: https://godoc.org/golang.org/x/tools/cmd/godoc
[2]: https://golang.org/pkg/go/doc/#ToHTML
