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Keep kubectl delete hack for DaemonSet until 1.12
**What this PR does / why we need it**:
As pointed out here: https://github.com/kubernetes/kubernetes/pull/64797#issuecomment-395152965, the server side fix is in 1.11. We're keeping kubectl hack until 1.12 to support 1.11 kubectl + 1.10.0-4 server.
**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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Refactoring GCE Disk APIs to use generated client
**What this PR does / why we need it**: Improves maintainability and testing of GCE disks code.
**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#62296
Note that `gen.go` and `gen_test.go` are generated files.
I'm planning to do a more extensive refactor that takes advantage of the generated cloud provider mocks, but that'll be in a separate PR and will be a larger change.
/cc @davidz627
/assign @saad-ali
/release-note-none
/sig storage
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Final kubeadm-kubelet integration refactor PR
**What this PR does / why we need it**:
Note: Work in progress
This PR:
- [x] Updates the debs/rpms to do the "right thing" with the new integration flow
- Broken out into https://github.com/kubernetes/kubernetes/pull/64780
- [x] Uploads the `CRISocket` information to the Node object as an annotation
- Broken out into: https://github.com/kubernetes/kubernetes/pull/64792
- [x] Makes the `kubeadm init` / `kubeadm join` flow to be preflight, stop kubelet, write config/env files, daemon-reload, start kubelet
- [x] Renames `.NodeRegistration.ExtraArgs` to `.NodeRegistration.KubeletExtraArgs` as discussed in the SIG meeting
- [x] Adds a `kubeadm upgrade node config` command for fetching the latest configuration and writing it down to the node before upgrading the kubelet
- [x] Makes dynamic kubelet config actually get enabled when the feature gate in kubeadm is specifically opted into by the user
- [x] Fixes misc. minor bugs
- [x] Makes sure `kubeadm init --dry-run` works, so the dry-run functionality works for the kubelet integration as well
**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
kubeadm: Add a new `kubeadm upgrade node config` command
```
@kubernetes/sig-cluster-lifecycle-pr-reviews
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Let the garbage collector use json merge patch when SMP is not supported
**What this PR does / why we need it**:
Let garbage collector fallback to use json merge patch when strategic merge patch returns 415. This enables orphan delete on custom resources.
**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#56348
**Special notes for your reviewer**:
This PR is developed based on https://github.com/kubernetes/kubernetes/pull/56595. Ref https://github.com/kubernetes/kubernetes/pull/56606 for more information.
**Release note**:
```release-note
Orphan delete is now supported for custom resources
```
/sig api-machinery
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Update istio addon manifest to 0.8
**What this PR does / why we need it:**
Update Istio addon version to latest stable 0.8.0.
Changes from vanilla istio[-auth].yaml include:
- k8s addon Reconcile labels
- add all available Istio addons (grafana)
- mirror docker images to gcr.io
- add auto-injection in default namespace (not reconciled to allow Istio uninstall)
- remove instance counts to prevent addon reconcile reverting any manual scaling
**Release note**:
```release-note
Update version of Istio addon from 0.6.0 to 0.8.0.
See https://istio.io/about/notes/0.8.html for full Isto release notes.
```
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CSI implementation of raw block volume support
**What this PR does / why we need it**:
This PR implements support for block volumes feature.
**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#64722
**Special notes for your reviewer**:
**Release note**:
```release-note
Provides API support for external CSI storage drivers to support block volumes.
```
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Handle deleted DaemonSet properly
**What this PR does / why we need it**:
After kubectl reapers are removed (#63979) and foreground deletion are used, DaemonSet controller may race with garbage collector when it tries to update DaemonSet status of the DaemonSet being deleted.
Here's what happened:
1. Someone/something performs a foreground deletion on a DaemonSet
1. DaemonSet finalizer and DeletionTimestamp are both set
1. DaemonSet history objects (ControllerRevisions) and pods are being deleted by garbage collector; meanwhile, DaemonSet controller tries to update DaemonSet status.
* Updating DaemonSet status requires constructing DaemonSet history objects, to figure out current revision and which pods do/don't belong to current revision
1. When updating DaemonSet status, DaemonSet controller tries to create a DaemonSet history object that matches current DaemonSet spec
1. Garbage collector then tries to delete that DaemonSet history object. And repeat.
Because we can't make DaemonSet pods be deleted before DaemonSet history objects (DaemonSet history objects don't own DaemonSet pods!), we cannot reliably calculate DaemonSet status without history objects anyways. Therefore, we don't update DaemonSet status for DaemonSet being deleted.
Note that the reason why the kubectl delete hack works is because it forces DaemonSet pods to be removed before history objects.
**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#64313
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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kubeadm: Don't match DNS versions to K8s versions
**What this PR does / why we need it**:
Some code in kubeadm was designed with the intent, that in the future CoreDNS
and kube-dns versions will match to specific K8s versions. This code is not
functional, since it does not perform any version matching. As of this moment,
no version matching is planned and a lot of boilerplate code is left useless.
The solution is simple - remove the unneeded parts to simplify the flow.
Signed-off-by: Rostislav M. Georgiev <rostislavg@vmware.com>
**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#870
**Special notes for your reviewer**:
/cc @kubernetes/sig-cluster-lifecycle-pr-reviews
/area kubeadm
/assign @luxas
/assign @timothysc
/kind cleanup
**Release note**:
```release-note
NONE
```
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fix kubectl -o
Fix kubectl -o error message:
Before this change:
```
kubectl get pods -o foo
error: unable to match a printer suitable for the output format "" and the options specified: &get.PrintFlags{JSONYamlPrintFlags:(*genericclioptions.JSONYamlPrintFlags)(0x23aa610), NamePrintFlags:(*genericclioptions.NamePrintFlags)(0xc42058b4e0), TemplateFlags:(*printers.KubeTemplatePrintFlags)(0xc4206765e0), CustomColumnsFlags:(*printers.CustomColumnsPrintFlags)(0xc420676620), HumanReadableFlags:(*get.HumanPrintFlags)(0xc4204eb180), NoHeaders:(*bool)(0xc4206fefbc), OutputFormat:(*string)(0xc42058b4d0)}
```
After this change:
```
Kubectl get pods -o foo
error: unable to match a printer suitable for the output format "foo", allowed formats are: json,yaml,name,template,go-template,go-template-file,templatefile,jsonpath,jsonpath-file,custom-columns-file,custom-columns,wide
```
**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
kubectl will list all allowed print formats when an invalid format is passed.
```
Some code in kubeadm was designed with the intent, that in the future CoreDNS
and kube-dns versions will match to specific K8s versions. This code is not
functional, since it does not perform any version matching. As of this moment,
no version matching is planned and a lot of boilerplate code is left useless.
The solution is simple - remove the unneeded parts to simplify the flow.
Signed-off-by: Rostislav M. Georgiev <rostislavg@vmware.com>
Automatic merge from submit-queue (batch tested with PRs 63717, 64646, 64792, 64784, 64800). 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>.
Update cadvisor godeps to v0.30.0
**What this PR does / why we need it**:
cAdvisor godep update corresponding to 1.11
**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#63204
**Release note**:
```release-note
Use IONice to reduce IO priority of du and find
cAdvisor ContainerReference no longer contains Labels. Use ContainerSpec instead.
Fix a bug where cadvisor failed to discover a sub-cgroup that was created soon after the parent cgroup.
```
/sig node
/kind bug
/priority critical-urgent
/assign @dchen1107
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Reconcile extended resource capacity after kubelet restart.
**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 https://github.com/kubernetes/kubernetes/issues/64632
**Special notes for your reviewer**:
**Release note**:
```release-note
Kubelet will set extended resource capacity to zero after it restarts. If the extended resource is exported by a device plugin, its capacity will change to a valid value after the device plugin re-connects with the Kubelet. If the extended resource is exported by an external component through direct node status capacity patching, the component should repatch the field after kubelet becomes ready again. During the time gap, pods previously assigned with such resources may fail kubelet admission but their controller should create new pods in response to such failures.
```
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kubeadm: Upload CRISocket information in kubeadm init/join
**What this PR does / why we need it**:
As a side-effect, `kubeadm join` will become blocking on the kubelet doing the TLS bootstrap. This partially also fixes problems when users run `kubeadm join` and it returns successfully without anything happening as the kubelet is actually unhealthy. If that happens now `kubeadm join` will exit with a non-zero code.
What this PR does is it uploads the CRISocket information to the Node API object as a workaround until we have something like https://github.com/kubernetes/kubernetes/issues/64460 in place that will solve this problem for real. This way we won't lose the CRISocket information which we would otherwise do.
This can be used for `kubeadm upgrade` or `kubeadm reset` in future releases.
**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**:
Depends on https://github.com/kubernetes/kubernetes/pull/64624
**Release note**:
```release-note
[action required] TODO
```
@kubernetes/sig-cluster-lifecycle-pr-reviews
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Promote sysctl annotations to fields
#
**What this PR does / why we need it**:
Promoting experimental sysctl feature from annotations to API fields.
**Special notes for your reviewer**:
Following sysctl KEP: https://github.com/kubernetes/community/pull/2093
**Release note**:
```release-note
The Sysctls experimental feature has been promoted to beta (enabled by default via the `Sysctls` feature flag). PodSecurityPolicy and Pod objects now have fields for specifying and controlling sysctls. Alpha sysctl annotations will be ignored by 1.11+ kubelets. All alpha sysctl annotations in existing deployments must be converted to API fields to be effective.
```
**TODO**:
* [x] - Promote sysctl annotation in Pod spec
* [x] - Promote sysctl annotation in PodSecuritySpec spec
* [x] - Feature gate the sysctl
* [x] - Promote from alpha to beta
* [x] - docs PR - https://github.com/kubernetes/website/pull/8804
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kubeadm: When etcd is listening on all interfaces, set the etcd probe to use loopback
**What this PR does / why we need it**:
When constructing the etcd liveness probe, if the user passes an IPv4 or IPv6 address,
we set the `etcdctl` liveness probe to use the respective IPv4 or IPv6 loopback address for `--endpoints`.
The etcd probe is now always formatted with the https:// protocol and square brackets around the IP (required for IPv6 / compatible with IPv4).
`::1` is now also included in the etcd serving cert SAN by default.
/kind bug
/area kubeadm
/area etcd
/priority important-soon
/sig cluster-lifecycle
/assign @fabriziopandini
**Which issue(s) this PR fixes**
Fixes https://github.com/kubernetes/kubeadm/issues/882
**Special notes for your reviewer**:
```bash
root@vagrant:~# /vagrant/bin/882_kubeadm init --config /dev/stdin << EOF |& tail -n5
etcd:
extraArgs:
listen-client-urls: https://[::]:2379
EOF
I0603 19:52:15.666594 24743 tlsbootstrap.go:50] [bootstraptoken] configured RBAC rules to allow Node Bootstrap tokens to post CSRs in order for nodes to get long term certificate credentials
I0603 19:52:15.671424 24743 tlsbootstrap.go:72] [bootstraptoken] configured RBAC rules to allow the csrapprover controller automatically approve CSRs from a Node Bootstrap Token
I0603 19:52:15.674607 24743 tlsbootstrap.go:95] [bootstraptoken] configured RBAC rules to allow certificate rotation for all node client certificates in the cluster
I0603 19:52:15.677551 24743 clusterinfo.go:43] [bootstraptoken] creating the "cluster-info" ConfigMap in the "kube-public" namespace
[addons] Applied essential addon: CoreDNS
[addons] Applied essential addon: kube-proxy
root@vagrant:~# cat /etc/kubernetes/manifests/etcd.yaml |grep -C4 listen
spec:
containers:
- command:
- etcd
- --listen-client-urls=https://[::]:2379
- --advertise-client-urls=https://127.0.0.1:2379
- --cert-file=/etc/kubernetes/pki/etcd/server.crt
- --client-cert-auth=true
- --data-dir=/var/lib/etcd
root@vagrant:~# cat /etc/kubernetes/manifests/etcd.yaml |grep -C4 etcdctl
exec:
command:
- /bin/sh
- -ec
- ETCDCTL_API=3 etcdctl --endpoints=https://[::1]:2379 --cacert=/etc/kubernetes/pki/etcd/ca.crt
--cert=/etc/kubernetes/pki/etcd/healthcheck-client.crt --key=/etc/kubernetes/pki/etcd/healthcheck-client.key
get foo
failureThreshold: 8
initialDelaySeconds: 15
```
**Release note**:
```release-note
kubeadm now configures the etcd liveness probe correctly when etcd is listening on all interfaces
```
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Never clean backoff in job controller
**What this PR does / why we need it**:
In https://github.com/kubernetes/kubernetes/pull/60985 I've added a mechanism which allows immediate job status update, unfortunately that broke the backoff logic seriously. I'm sorry for that. I've changed the `immediate` mechanism so that it NEVER cleans the backoff, but for the cases when we want fast status update it uses a zero backoff.
**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#62382
**Special notes for your reviewer**:
/assign @janetkuo
**Release note**:
```release-note
None
```
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GCE: Update cloud provider to use TPU v1 API
**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
GCE: Update cloud provider to use TPU v1 API
```
/assign @vishh
/assign @cheftako
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per-field dynamic config advice
Dynamic Kubelet config gives cluster admins and k8s-as-a-service providers a lot of flexibility around reconfiguring the Kubelet in live environments. With great power comes great responsibility. These comments intend to provide more nuanced guidance around using dynamic Kubelet config by adding items to consider when changing various fields and pointing out where cluster admins and k8s-as-service providers should maintain extra caution.
@kubernetes/sig-node-pr-reviews PLEASE provide feedback and help fill in the blanks here, I don't have domain expertise in all of these features.
https://github.com/kubernetes/features/issues/281
```release-note
NONE
```
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kubeadm: Update the dropin for the kubelet in v1.11
**What this PR does / why we need it**:
One of the final pieces of https://github.com/kubernetes/kubeadm/issues/851, https://github.com/kubernetes/kubeadm/issues/847 and https://github.com/kubernetes/kubeadm/issues/822
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
(partially)
Fixes https://github.com/kubernetes/kubeadm/issues/822
**Special notes for your reviewer**: Please check whether this release note makes sense to you.
**Release note**:
```release-note
[action required] The structure of the kubelet dropin in the kubeadm deb package has changed significantly.
Instead of hard-coding the parameters for the kubelet in the dropin, a structured configuration file
for the kubelet is used, and is expected to be present in `/var/lib/kubelet/config.yaml`.
For runtime-detected, instance-specific configuration values, a environment file with
dynamically-generated flags at `kubeadm init` or `kubeadm join` run time is used.
Finally, if the user wants to override something specific for the kubelet that can't be done via
the kubeadm Configuration file (which is preferred), they might add flags to the
`KUBELET_EXTRA_ARGS` environment variable in either `/etc/default/kubelet`
or `/etc/sysconfig/kubelet`, depending on the system you're running on.
```
@kubernetes/sig-cluster-lifecycle-pr-reviews
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Kubelet: Add security context for Windows containers
**What this PR does / why we need it**:
This PR adds windows containers to Kubelet CRI and also implements security context setting for docker containers.
**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**:
RunAsUser from Kubernetes API only accept int64 today, which is not supported on Windows. It should be changed to intstr for working with both Windows and Linux containers in a separate PR.
**Release note**:
```release-note
Kubelet: Add security context for Windows containers
```
/cc @PatrickLang @taylorb-microsoft @michmike @JiangtianLi @yujuhong @dchen1107
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Set GCE PD attachable volume limit based on machineType
This PR implements the function to return attachable volume limit based
on machineType for GCE PD. This is part of the design in kubernetes/community#2051/
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>.
kubeadm: Let the `--node-name` flag flow down to `--hostname-override` for the kubelet
**What this PR does / why we need it**:
Kubeadm-initialised kubelet uses provided hostname if present
If --node-name is passed in to `kubeadm init`, `--hostname-override` will be
passed to kubelet. This prevents timeout errors for `kubeadm init`.
**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 kubernetes/kubeadm#846
**Special notes for your reviewer**:
Depends on #64624 to work fully, but can safely merged before hand.
**Release note**:
```release-note
[action required] The `--node-name` flag for kubeadm now dictates the Node API object name the
kubelet uses for registration, in all cases but where you might use an in-tree cloud provider.
If you're not using an in-tree cloud provider, `--node-name` will set the Node API object name.
If you're using an in-tree cloud provider, you MUST make `--node-name` match the name the
in-tree cloud provider decides to use.
```
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Volume topology aware dynamic provisioning: work based on new API
**What this PR does / why we need it**:
The PR has been split to 3 parts:
Part1: https://github.com/kubernetes/kubernetes/pull/63232 for basic scheduler and PV controller plumbing
Part2: https://github.com/kubernetes/kubernetes/pull/63233 for API change
and the PR itself includes work based on the API change:
- Dynamic provisioning allowed topologies scheduler work
- Update provisioning interface to be aware of selected node and topology
**Which issue(s) this PR fixes**
Feature: https://github.com/kubernetes/features/issues/561
Design: https://github.com/kubernetes/community/issues/2168
**Special notes for your reviewer**:
/sig storage
/sig scheduling
/assign @msau42 @jsafrane @saad-ali @bsalamat
@kubernetes/sig-storage-pr-reviews
@kubernetes/sig-scheduling-pr-reviews
**Release note**:
```release-note
Volume topology aware dynamic provisioning
```
Mikhail Mazurskiy