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Remove bootstrap kubelet config on reset
**What this PR does / why we need it**:
Remove /etc/kubernetes/bootstrap-kubelet.conf when running 'kubeadm reset'
to ensure it will not be reused when joining the cluster next time.
**Release note**:
```release-note
NONE
```
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Ignore 0% and 100% eviction thresholds
Primarily, this gives a way to explicitly disable eviction, which is
necessary to use omitempty on EvictionHard.
See: https://github.com/kubernetes/kubernetes/pull/53833#discussion_r166672137
As justification for this approach, neither 0% nor 100% make sense as
eviction thresholds; in the "less-than" case, you can't have less than
0% of a resource and 100% perpetually evicts; in the
"greater-than" case (assuming we ever add a resource with this
semantic), the reasoning is the reverse (not more than 100%, 0%
perpetually evicts).
```release-note
Eviction thresholds set to 0% or 100% are now ignored.
```
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admissionregistration use shared informer instead of poll
**What this PR does / why we need it**:
poll with 1s interval influence apiserver's performance
**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#56357
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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Format some import statements in scheduler pkg
**What this PR does / why we need it**:
As the title says, apply `goimports` on some files under `pkg/scheduler` pkg.
**Release note**:
```release-note
NONE
```
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Remove myself (timothysc) from OWNERS files on areas that I do not maintain
I do not actively participate in api-machinery, so I'm removing myself from the OWNERS files.
/cc @ncdc
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pass listener in integration test
**What this PR does / why we need it**:
pass listener to `SecureServingOptions` to prevent port in use flake.
partially fix#58936
**Special notes for your reviewer**:
/assign @liggitt @sttts @caesarxuchao
**Release note**:
```release-note
NONE
```
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Audit support resource wildcard matching
**What this PR does / why we need it**:
audit policy support "resource/subresources" wildcard matching "resource/*", "*/subresource","*"
**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#55305
**Special notes for your reviewer**:
**Release note**:
```release-note
[advanced audit] support subresources wildcard matching.
```
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Increase timeout on waiting on cluster resize in autoscaling tests
Looks like autoscaling tests in GKE are failing due to insufficient wait time for master resize. Increasing the timeout by 1 minute to help with this.
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>.
Remove /ui/ redirect
The existing kube-apiserver hard-codes `/ui` to redirect to an optional add-on, which is not appropriate. It does not work in the following scenarios:
* https-enabled dashboards
* the dashboard is deployed to a different namespace or service name
* the dashboard is not installed at all
* authorization is enabled and does not allow access to /ui
This PR removes the hard-coded `/ui` redirect.
```release-note
apiserver: the /ui kube-dashboard redirect has been removed. Follow instructions specific to your deployment to access kube-dashboard
```
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code-generator: add boilerplate header
Currently, the boilerplate header from k8s.io/kubernetes is used. If k8s.io/kubernetes is not in the GOPATH, a
panic will occur.
Making this a part of k8s.io/code-generator will prevent this panic.
Fixeskubernetes/code-generator#6
**Release note**:
```release-note
NONE
```
/assign sttts
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Improve performance of scheduling queue by adding a hash map to track all pods with a nominatedNodeName
**What this PR does / why we need it**:
Our investigations show that there is a performance regression in the new scheduling queue which is not enabled by default and is enabled only if "priority and preemption" which is an alpha feature is enabled. This PR is an important performance improvement for those who want to use priority and preemption in larger clusters.
The PR adds a hash table to track nominated Pods so that finding such Pods will be faster.
Other than improving performance, we don't expect this PR to change behavior of scheduler.
**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 #
ref/ #56032
ref/ #57471
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
/sig scheduling
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Refactor kube-proxy service/endpoints update so that can be consumed among different proxiers
**What this PR does / why we need it**:
There are huge duplication among different proxiers. For example, the service/endpoints list/watch part in iptables, ipvs and windows kernel mode(to be get in soon).
I think the more places this is replicated the harder it becomes to keep correct. We may need to refactor it and let different proxiers consume the same code.
**Which issue this PR fixes**:
fixes#52464
**Special notes for your reviewer**:
* This refactor reduces **500** Lines in iptables proxy, so it will reduce **500*N**(number of proxiers) lines in total. People no need to care the service/endpoints update logic any more and can be more focus on proxy logic.
* I would like to do the following things in follow-ups:
1. rsync it to ipvs proxier
2. rsync it to winkernel proxier
**Release note**:
```release-note
Refactor kube-proxy service/endpoints update so that can be consumed among different proxiers
```
Currently, the boilerplate header from k8s.io/kubernetes
is used. If k8s.io/kubernetes is not in the GOPATH, a
panic will occur.
To fix this, we first calculate the relative path to
k8s.io/code-generator and then use the boilerplate from
code-generator. This avoids hard coding the path and
works well for all repos.
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remove unused function printIndentedJson and printAllPods in test/integration/scheduler
**What this PR does / why we need it**:
remove unused function printIndentedJson and printAllPods in test/integration/scheduler
**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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Create short name for cronjob
**What this PR does / why we need it**:
Following https://github.com/kubernetes/kubernetes/pull/59061 I'm adding short name for cronjob, since I was asked about it several times and was thinking about this for a long.
**Release note**:
```release-note
CronJobs can be accessed through cj alias
```
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Add gnufied as AWS approver.
@gnufied has been maintaining the storage part of AWS cloud provider for a long while and he deserves to be approver.
```release-note
NONE
```
/sig aws
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fix typo in resource_allocation.go
**What this PR does / why we need it**:
fix a typo in resource_allocation.go file
**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
N/A
```
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fix the error prone account creation method of blob disk
**What this PR does / why we need it**:
use new account generation method for blob disk to fix the error prone account creation method of blob disk
**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#59738
**Special notes for your reviewer**:
**Release note**:
```
fix the error prone account creation method of azure blob disk
```
/assign @karataliu
/sig azure
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bazel: update digests for debian-iptables-amd64 and busybox
**What this PR does / why we need it**: I've pushed updated (rebased) versions of the `debian-base-ARCH:0.3` and `debian-iptables-ARCH:v10` images. Since bazel uses the sha256 digest instead of the tag, we need to update those accordingly.
I also bumped the busybox digest, which hasn't been updated since last summer. This is updating it from v1.26.2 to v1.28.0. Note that the non-bazel build process uses `busybox:latest`, and so has already been using busybox v1.28.0.
**Special notes for your reviewer**:
We will update the hyperkube-base image in #57648.
**Release note**:
```release-note
NONE
```
/assign @tallclair
/cc @rphillips @rvkubiak
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Bump GLBC to 0.9.8-alpha.2 and change back to --verbose
**What this PR does / why we need it**:
Bumps GLBC version to 0.9.8-alpha.2 which is logically equivalent to 0.9.8-alpha.1 except verbose mode sets v=3 instead of v=4
**Special notes for your reviewer**:
/cc @rramkumar1
/assign @bowei
**Release note**:
```release-note
NONE
```
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Add etcd 3.x minor version rollback support to migrate-if-needed.sh
Provide automatic etcd 3.x minor version downgrade when using the gcr.io/google_containers/etcd docker images to operate etcd.
Uses `etcdctl snapshot save` and `etcdctl snapshot restore` to safely downgrade etcd from 3.2->3.1 or 3.1->3.0. This is safe because the data storage file formats used by etcd have not changed between these versions.
Intended as a stop-gap until we can introduce more comprehensive downgrade support in etcd. The main limitation of this approach is that it is not able to perform zero downtime downgrades for HA clusters. For HA clusters, all members must be stopped and downgraded before the cluster may be restarted at the downgraded version.
Example usage:
- Initially the [etcd.manifest](58547ebd72/cluster/gce/manifests/etcd.manifest (L43)) is set to gcr.io/google_containers/etcd:3.0.17, TARGET_VERSION=3.0.17
- A upgrade to 3.1.11 is initiated.
- etcd.manifest is updated to gcr.io/google_containers/etcd:3.1.11, TARGET_VERSION=3.1.11
- etcd restarts and establishes 3.1 as it's "cluster version"
- For whatever reason, a downgrade is initiated
- etcd.manifest is updated gcr.io/google_containers/etcd:3.1.11, TARGET_VERSION=3.0.17
- migrate-if-needed.sh detects that the current version (3.1.11) is newer than the target version, so it:
- creates a snapshot using etcd & etcdctl 3.1.11
- backs up the data dir
- restores the snapshot using etcdctl 3.0.17 to create a replacement data dir
- starts etcd 3.0.17
Note that while this will rollback to an earlier etcd version, the newer etcd gcr.io image version must continue to be used throughout the downgrade. Only TARGET_VERSION is downgraded.
Test coverage was lacking for `migrate-if-needed.sh` so this adds some container level testing to the `Makefile` for migrating and rolling back. This surfaced a couple bugs that are fixed by this PR as well.
cc @mml @lavalamp @wenjiaswe
```release-note
Add automatic etcd 3.2->3.1 and 3.1->3.0 minor version rollback support to gcr.io/google_container/etcd images. For HA clusters, all members must be stopped before performing a rollback.
```
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Add tests for schedulercache
**What this PR does / why we need it**:
Add tests for `node_info.go` under `schedulercache` package.
**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**:
```
NONE
```
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Avoid race condition when updating equivalence cache
**What this PR does / why we need it**:
Lock the ecache to update the ecache on each predicate running, to avoid race condition.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fix#58507
**Special notes for your reviewer**:
None
**Release note**:
```release-note
None
```
Automatic merge from submit-queue (batch tested with PRs 59767, 56454, 59237, 59730, 55479). 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>.
kubeadm: add configuration option to not taint master
**What this PR does / why we need it**:
Although tainting the master is normally a good and proper thing to do in some situations (docker for mac in our case, but I suppose minikube and such as well) having a single host configuration is desirable.
In linuxkit we have a [workaround](443e47c408/projects/kubernetes/kubernetes/kubeadm-init.sh (L19...L22)) to remove the taint after initialisation. With the change here we could simply populate `/etc/kubeadm/kubeadm.yaml` with `noTaintMaster: true` instead and have it never be tainted in the first place.
I have only added this to the config file and not to the CLI since AIUI the latter is somewhat deprecated.
The code also arranges to _remove_ an existing taint if it is unwanted. I'm unsure if this behaviour is correct or desirable, I think a reasonable argument could be made for leaving an existing taint in place too.
Signed-off-by: Ian Campbell <ijc@docker.com>
**Release note**:
Since the requirement for this option is rather niche and not best practice in the majority of cases I'm not sure if it warrants mentioning in the release notes? If it were then perhaps
```release-note
`kubeadm init` can now omit the tainting of the master node if configured to do so in `kubeadm.yaml`.
```
Automatic merge from submit-queue (batch tested with PRs 59767, 56454, 59237, 59730, 55479). 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>.
Requesting new credentials when node names change
**What this PR does / why we need it**:
Updating kubernetes-worker charm to request a new token when the node name changes due to a cloud provider change to kubelet-extra-args
**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 #
https://github.com/juju-solutions/bundle-canonical-kubernetes/issues/491
**Special notes for your reviewer**:
**Release note**:
```release-note
Updated kubernetes-worker to request new security tokens when the aws cloud provider changes the registered node name.
```
Automatic merge from submit-queue (batch tested with PRs 59767, 56454, 59237, 59730, 55479). 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>.
Change critical pods’ template to use priority
**What this PR does / why we need it**:
Change critical pods’ template to use priority
Thanks.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
ref #57471
**Special notes for your reviewer**:
**Release note**:
```release-note
```
Automatic merge from submit-queue (batch tested with PRs 59767, 56454, 59237, 59730, 55479). 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>.
Block Volume: Refactor volumehandler in operationexecutor
**What this PR does / why we need it**:
Based on discussion with @saad-ali at #51494, we need refactor volumehandler in operationexecutor
for Block Volume feature. We don't need to add volumehandler as separated object.
```
VolumeHandler does not need to be a separate object that is constructed inline like this.
You can create a new operation, e.g. UnmountOperation to which you pass the spec,
and it can return either a UnmountVolume or UnmapVolume.
```
**Which issue(s) this PR fixes** : no related issue.
**Special notes for your reviewer**:
@saad-ali @msau42
**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>.
kubelet: check for illegal phase transition
I have been unable to root cause the transition from `Failed` phase to `Succeeded`. I have been unable to recreate as well. However, our CI in Origin, where we have controllers that look for these transitions and rely on the phase transition rules being respected, obviously indicate that the illegal transition does occur.
This PR will prevent the illegal phase transition from propagating into the kubelet caches or the API server.
Fixes https://github.com/kubernetes/kubernetes/issues/58711
xref https://github.com/openshift/origin/issues/17595
@dashpole @yujuhong @derekwaynecarr @smarterclayton @tnozicka
Primarily, this gives a way to explicitly disable eviction, which is
necessary to use omitempty on EvictionHard.
See: https://github.com/kubernetes/kubernetes/pull/53833#discussion_r166672137
As justification for this approach, neither 0% nor 100% make sense as
eviction thresholds; in the "less-than" case, you can't have less than
0% of a resource and 100% perpetually evicts; in the
"greater-than" case (assuming we ever add a resource with this
semantic), the reasoning is the reverse (not more than 100%, 0%
perpetually evicts).
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>.
Remove controller-manager --service-sync-period flag
**What this PR does / why we need it**:
This PR removes controller manager --service-sync-period flag which is not used anywhere in the code and is causing confusion
**Which issue(s) this PR fixes**
https://github.com/kubernetes/kubernetes/issues/58776
**Special notes for your reviewer**:
@deads2k this remove the flag as per the discussion on #58776
2 commits
1. one for code change
2. one for auto generated code
**Release note**:
```release-note
1. Controller-manager --service-sync-period flag is removed (was never used in the code).
```
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Remove validation failure of Pod priority when the feature is disabled
**What this PR does / why we need it**:
I learned that fields specified in the API should be silently ignored when the feature is disabled. This makes sense as downgrading a cluster would fail otherwise. This PR removes the validation logic that ensures Pod priority is not set when priority feature is disabled.
**Special notes for your reviewer**:
**Release note**:
```release-note
Pod priority can be specified ins PodSpec even when the feature is disabled, but it will be effective only when the feature is enabled.
```
/sig scheduling
ref: #57471
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Skip TestRoutes when there are no vm(s)
**What this PR does / why we need it**:
TestRoutes assumes that there is at least one vm in the OpenStack it
is connecting to. So let's limit this test to run properly only when
we are running in a VM or one was created already outside of the
test harness
**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**:
Please see https://github.com/dims/openstack-cloud-controller-manager/issues/73 for some more context
**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>.
Feature Gate - Kubeadm Audit Logging
Fixeskubernetes/kubeadm#623
Signed-off-by: Chuck Ha <ha.chuck@gmail.com>
**What this PR does / why we need it**:
This PR enables [Auditing](https://kubernetes.io/docs/tasks/debug-application-cluster/audit/) behind a featureGate. A user can supply their own audit policy with configuration option as well as a place for the audit logs to live. If no policy is supplied a default policy will be provided. The default policy will log all Metadata level policy logs. It is the example provided in the documentation.
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixeskubernetes/kubeadm#623
**Special notes for your reviewer**:
**Release note**:
```release-note
kubeadm: Enable auditing behind a feature gate.
```
Although tainting the master is normally a good and proper thing to do in some
situations (docker for mac in our case, but I suppose minikube and such as
well) having a single host configuration is desirable.
In linuxkit we have a [workaround](443e47c408/projects/kubernetes/kubernetes/kubeadm-init.sh (L19...L22))
to remove the taint after initialisation. With the change here we could simply
populate /etc/kubeadm/kubeadm.yaml` with `noTaintMaster: true` instead and have
it never be tainted in the first place.
I have only added this to the config file and not to the CLI since AIUI the
latter is somewhat deprecated.
The code also arranges to _remove_ an existing taint if it is unwanted. I'm
unsure if this behaviour is correct or desirable, I think a reasonable argument
could be made for leaving an existing taint in place too.
Signed-off-by: Ian Campbell <ijc@docker.com>
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>.
correct the ConstructVolumeSpec func path value
**What this PR does / why we need it**:
the path value is incorrect
**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
```
fix comments
change azureDiskSharedAccountNamePrefix var
rename sharedDiskAccountNamePrefix
use default vhd container name as "vhds"
use one commaon func: SearchStorageAccount
fix comments
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Map correct vmset name for internal load balancers
**What this PR does / why we need it**:
When creating an internal loadbalancer, e.g.
```sh
cat << EOF | kubectl create -f -
apiVersion: v1
kind: Service
metadata:
name: ingress-nginx
annotations:
service.beta.kubernetes.io/azure-load-balancer-internal: "true"
spec:
type: LoadBalancer
ports:
- name: http
port: 80
targetPort: 80
protocol: TCP
- name: https
port: 443
targetPort: 443
protocol: TCP
selector:
app: ingress-nginx
EOF
```
Then wait a while, and no target backends present for the internal load balancer even after 15 mins.
Refer https://github.com/Azure/acs-engine/issues/2151#issuecomment-364726846.
**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#59746
**Special notes for your reviewer**:
Should cherry pick to v1.9, v1.8, and v1.7 (and requires resolving conflicts manually).
**Release note**:
```release-note
Map correct vmset name for internal load balancers
```
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>.
fix --watch on multiple requests
**Release note**:
```release-note
NONE
```
`kubectl get <resource> --watch` only supports watching a single resource kind at a time.
This check fails if more than one resource `Info` is returned.
When dealing with large quantities of a single resource kind, or an amount that exceeds the value of `--chunk-size`, more than one request is made to the server causing a resource `Info` to be created for each of the requests, ultimately causing the above check to fail even though we are dealing with the same type of resource.
This patch modifies that check to take into account the GVKs of all infos returned, and only fail if at least one differs.
cc @deads2k
