Automatic merge from submit-queue
volumes: add comment on getNodeAndVolume
Add comments on getNodeAndVolume to explain the code - it is a little
subtle, and it confused me on first reading.
Part of #40583
```release-note
NONE
```
Automatic merge from submit-queue
Added an e2e test timing HPA + CA scaling up from 1 to 8 pods and from 3 to >=4 clusters
**What this PR does / why we need it**:
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes#46847
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
Automatic merge from submit-queue
Fixed the issue with formatting issues not being reported when verification fails
**What this PR does / why we need it**:
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
Automatic merge from submit-queue
Add new e2e test for cluster size autoscaler (evicting system pods)
This test verifies that cluster autoscaler drains nodes with system pods running if they have a PDB.
Automatic merge from submit-queue (batch tested with PRs 46604, 47634)
Set price expander in Cluster Autoscaler for GCE
With CA 0.6 we will make price-preferred node expander the default one for GCE. For other cloud providers we will stick to the default one (random) until the community implement the required interfaces in CA repo.
https://github.com/kubernetes/autoscaler/issues/82
cc: @MaciekPytel @aleksandra-malinowska
Automatic merge from submit-queue (batch tested with PRs 46604, 47634)
Added example for status errors in go client
This PR adds status error handling examples to the go client examples, for both in-cluster and out-of-cluster usage. Fixes https://github.com/kubernetes/client-go/issues/163
Automatic merge from submit-queue
Remove timestamps from docs/api-reference/*/*.html
**What this PR does / why we need it**:
If there are 2 or more PR(s) in the queue, they will end up with
conflicts (and rechecks). So let us remove the timestamp entirely
when we generate the files.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #
Fixes#46814
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
If there are 2 or more PR(s) in the queue, they will end up with
conflicts (and rechecks). So let us remove the timestamp entirely
when we generate the files.
Fixes#46814
Automatic merge from submit-queue (batch tested with PRs 47726, 47693, 46909, 46812)
Plumb service resolver into webhook AC
This is the last piece of plumbing needed for https://github.com/kubernetes/features/issues/209
Automatic merge from submit-queue (batch tested with PRs 47726, 47693, 46909, 46812)
pod spec was not validating envFrom
**What this PR does / why we need it**:
adds missing validation for envFrom in a pod.spec.containers.envFrom
fixes validation of pod.spec.containers.env.configMapRef.name
fixes validation of pod.spec.containers.env.secretRef.name
**Which issue this PR fixes**
Fixes https://github.com/kubernetes/kubernetes/issues/46908
Automatic merge from submit-queue (batch tested with PRs 47726, 47693, 46909, 46812)
Additional e2e for StatefulSet Update
**What this PR does / why we need it**:
This PR adds additional e2e tests for StatefulSet update
fixes: #46942
```release-note
NONE
```
Automatic merge from submit-queue (batch tested with PRs 47726, 47693, 46909, 46812)
manually revert #45528
**What this PR does / why we need it**:
Revert #45528
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes#47657
**Special notes for your reviewer**:
@humblec @liggitt @saad-ali @kubernetes/kubernetes-release-managers
**Release note**:
```release-note
NONE
```
Automatic merge from submit-queue
Don't rerun certificate manager tests 1000 times.
**What this PR does / why we need it**:
Running every testcase 1000 times needlessly bloats the logs.
**Release note**:
```release-note
NONE
```
Automatic merge from submit-queue (batch tested with PRs 47669, 40284, 47356, 47458, 47701)
Serialized protobuf should have stable map order
Leverage `stable_marshaller_all` tag in gogo-protobuf to ensure all of our maps have stable ordering when serialized to protobuf. This preserves the behavior from JSON that we rely on to avoid writing to etcd except when the content has changed.
Will slightly increase allocations (1 slice per non-empty map in an object) during Encode, which has a minor impact on CPU. However, avoiding writes when a client issues a blind put results in significantly less CPU across the whole cluster (avoiding a new etcd version for an Endpoints object might save ~1 core/sec on large clusters).
Fixes#47678
```release-note
The protobuf serialization of API objects has been updated to store maps in a predictable order to ensure that the representation of that object does not change when saved into etcd. This prevents the same object from being seen as being modified, even when no values have changed.
```
Automatic merge from submit-queue (batch tested with PRs 47669, 40284, 47356, 47458, 47701)
Standardize on home/kubernetes/bin for CNI
**What this PR does / why we need it**:
Standardizes where CNI plugins get installed on GCE.
**Which issue this PR fixes**
Fixes: https://github.com/kubernetes/kubernetes/issues/47453
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
Automatic merge from submit-queue (batch tested with PRs 47669, 40284, 47356, 47458, 47701)
Mark Static pods on the Master as critical
fixes#47277.
A known issue with static pods is that they do not interact well with evictions. If a static pod is evicted or oom killed, then it will never be recreated. To mitigate this, we do not evict static pods that are critical. In addition, non-critical pods are candidates for preemption if a critical pod is scheduled to the node. If there are not enough allocatable resources on the node, this causes the static pod to be preempted.
This PR marks all static pods in the kube-system namspace as critical.
cc @vishh @dchen1107
Automatic merge from submit-queue (batch tested with PRs 47669, 40284, 47356, 47458, 47701)
add unit test cases for kubelet.util.sliceutils
What this PR does / why we need it:
I have not found any unit test case for this file, so i do it, thank you!
Fixes#47001
Automatic merge from submit-queue (batch tested with PRs 46327, 47166)
Fixed typo in comments.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes # N/A
```release-note
NONE
```
Automatic merge from submit-queue (batch tested with PRs 46327, 47166)
mark --network-plugin-dir deprecated for kubelet
**What this PR does / why we need it**:
**Which issue this PR fixes** : fixes#43967
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
Automatic merge from submit-queue
Fix flaky cluster-autoscaler e2e
Ref: https://github.com/kubernetes/autoscaler/issues/89
Add pdb to allow cluster-autoscaler to drain nodes with some kube-system components (turns out there can be enough of them to deny scale-down even with 5 healthy nodes). Increased scaleDownTimeout to take into account the time it will take to re-schedule pods running on broken node (this may reset scale-down timer).
The default marshalers from gogo-protobuf do not order keys, which means
successive serializations of the same data would result in same bytes.
Kubernetes leverages stable serialization to avoid excessive writes to
etcd when body content has not changed, which reduces the amount of
watch traffic generated by successive callers.
This will have a small memory impact on objects which have maps -
allocating a new string array for each map key. All maps must be keys
because we serialize those to JSON, so non-string types are not
relevant.
