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Kubelet: only apply default hard evictions of nodefs.inodesFree on Linux
**What this PR does / why we need it**:
Kubelet sets default hard evictions of `nodefs.inodesFree ` for all platforms today. This will cause errors on Windows and a lot `no observation found for eviction signal nodefs.inodesFree` errors will be logs for kubelet.
```
kubelet.err.log:4961:W0711 22:21:12.378789 2872 helpers.go:808] eviction manager: no observation found for eviction signal nodefs.inodesFree
kubelet.err.log:4967:W0711 22:21:30.411371 2872 helpers.go:808] eviction manager: no observation found for eviction signal nodefs.inodesFree
kubelet.err.log:4974:W0711 22:21:48.446456 2872 helpers.go:808] eviction manager: no observation found for eviction signal nodefs.inodesFree
kubelet.err.log:4978:W0711 22:22:06.482441 2872 helpers.go:808] eviction manager: no observation found for eviction signal nodefs.inodesFree
```
This PR updates the default hard eviction value and only apply nodefs.inodesFree on Linux.
**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#66088
**Special notes for your reviewer**:
**Release note**:
```release-note
Kubelet only applies default hard evictions of nodefs.inodesFree on Linux
```
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Add kubelet stats for windows system container "pods"
**What this PR does / why we need it**:
This PR adds kubelet stats for windows system container "pods". Without this, kubelet will always logs error:
```
kubelet.err.log:4832:E0711 22:12:49.241358 2872 helpers.go:735] eviction manager: failed to construct signal: "allocatableMemory.available" error: system container "pods" not found
```
**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#66087
**Special notes for your reviewer**:
/sig windows
/sig node
**Release note**:
```release-note
Add kubelet stats for windows system container "pods"
```
Automatic merge from submit-queue (batch tested with PRs 65251, 67255, 67224, 67297, 68105). If you want to cherry-pick this change to another branch, please follow the instructions here: https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md.
Promote mount propagation to GA
**What this PR does / why we need it**:
This PR promotes mount propagation to GA.
Website PR: https://github.com/kubernetes/website/pull/9823
**Release note**:
```release-note
Mount propagation has promoted to GA. The `MountPropagation` feature gate is deprecated and will be removed in 1.13.
```
Automatic merge from submit-queue (batch tested with PRs 64283, 67910, 67803, 68100). If you want to cherry-pick this change to another branch, please follow the instructions here: https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md.
CSI Cluster Registry and Node Info CRDs
**What this PR does / why we need it**:
Introduces the new `CSIDriver` and `CSINodeInfo` API Object as proposed in https://github.com/kubernetes/community/pull/2514 and https://github.com/kubernetes/community/pull/2034
**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/features/issues/594
**Special notes for your reviewer**:
Per the discussion in https://groups.google.com/d/msg/kubernetes-sig-storage-wg-csi/x5CchIP9qiI/D_TyOrn2CwAJ the API is being added to the staging directory of the `kubernetes/kubernetes` repo because the consumers will be attach/detach controller and possibly kubelet, but it will be installed as a CRD (because we want to move in the direction where the API server is Kubernetes agnostic, and all Kubernetes specific types are installed).
**Release note**:
```release-note
Introduce CSI Cluster Registration mechanism to ease CSI plugin discovery and allow CSI drivers to customize Kubernetes' interaction with them.
```
CC @jsafrane
Automatic merge from submit-queue (batch tested with PRs 64283, 67910, 67803, 68100). If you want to cherry-pick this change to another branch, please follow the instructions here: https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md.
Add a ProcMount option to the SecurityContext & AllowedProcMountTypes to PodSecurityPolicy
So there is a bit of a chicken and egg problem here in that the CRI runtimes will need to implement this for there to be any sort of e2e testing.
**What this PR does / why we need it**: This PR implements design proposal https://github.com/kubernetes/community/pull/1934. This adds a ProcMount option to the SecurityContext and AllowedProcMountTypes to PodSecurityPolicy
Relies on https://github.com/google/cadvisor/pull/1967
**Release note**:
```release-note
ProcMount added to SecurityContext and AllowedProcMounts added to PodSecurityPolicy to allow paths in the container's /proc to not be masked.
```
cc @Random-Liu @mrunalp
Automatic merge from submit-queue (batch tested with PRs 67349, 66056). If you want to cherry-pick this change to another branch, please follow the instructions here: https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md.
wait until apiserver connection before starting kubelet tls bootstrap
I wonder if this helps with sometimes slow network programming
cc @mwielgus @awly
This vendor change was purely for the changes in docker to allow for
setting the Masked and Read-only paths.
See: moby/moby#36644
But because of the docker dep update it also needed cadvisor to be
updated and winterm due to changes in pkg/tlsconfig in docker
See: google/cadvisor#1967
Signed-off-by: Jess Frazelle <acidburn@microsoft.com>
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should not event directly
**What this PR does / why we need it**:
should not event directly, using recordContainerEvent() to generate ref and deduplicate events instead.
**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 (batch tested with PRs 67739, 65222). 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>.
Honor --hostname-override, report compatible hostname addresses with cloud provider
xref #677147828e5d made cloud providers authoritative for the addresses reported on Node objects, so that the addresses used by the node (and requested as SANs in serving certs) could be verified via cloud provider metadata.
This had the effect of no longer reporting addresses of type Hostname for Node objects for some cloud providers. Cloud providers that have the instance hostname available in metadata should add a `type: Hostname` address to node status. This is being tracked in #67714
This PR does a couple other things to ease the transition to authoritative cloud providers:
* if `--hostname-override` is set on the kubelet, make the kubelet report that `Hostname` address. if it can't be verified via cloud-provider metadata (for cert approval, etc), the kubelet deployer is responsible for fixing the situation by adjusting the kubelet configuration (as they were in 1.11 and previously)
* if `--hostname-override` is not set, *and* the cloud provider didn't report a Hostname address, *and* the auto-detected hostname matches one of the addresses the cloud provider *did* report, make the kubelet report that as a Hostname address. That lets the addresses remain verifiable via cloud provider metadata, while still including a `Hostname` address whenever possible.
/sig node
/sig cloud-provider
/cc @mikedanese
fyi @hh
```release-note
NONE
```
Automatic merge from submit-queue (batch tested with PRs 67694, 64973, 67902). 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>.
SCTP support implementation for Kubernetes
**What this PR does / why we need it**: This PR adds SCTP support to Kubernetes, including Service, Endpoint, and NetworkPolicy.
**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#44485
**Special notes for your reviewer**:
**Release note**:
```release-note
SCTP is now supported as additional protocol (alpha) alongside TCP and UDP in Pod, Service, Endpoint, and NetworkPolicy.
```
The requested Service Protocol is checked against the supported protocols of GCE Internal LB. The supported protocols are TCP and UDP.
SCTP is not supported by OpenStack LBaaS. If SCTP is requested in a Service with type=LoadBalancer, the request is rejected. Comment style is also corrected.
SCTP is not allowed for LoadBalancer Service and for HostPort. Kube-proxy can be configured not to start listening on the host port for SCTP: see the new SCTPUserSpaceNode parameter
changed the vendor github.com/nokia/sctp to github.com/ishidawataru/sctp. I.e. from now on we use the upstream version.
netexec.go compilation fixed. Various test cases fixed
SCTP related conformance tests removed. Netexec's pod definition and Dockerfile are updated to expose the new SCTP port(8082)
SCTP related e2e test cases are removed as the e2e test systems do not support SCTP
sctp related firewall config is removed from cluster/gce/util.sh. Variable name sctp_addr is corrected to sctpAddr in pkg/proxy/ipvs/proxier.go
cluster/gce/util.sh is copied from master
This extends the Kubelet to create and periodically update leases in a
new kube-node-lease namespace. Based on [KEP-0009](https://github.com/kubernetes/community/blob/master/keps/sig-node/0009-node-heartbeat.md),
these leases can be used as a node health signal, and will allow us to
reduce the load caused by over-frequent node status reporting.
- add NodeLease feature gate
- add kube-node-lease system namespace for node leases
- add Kubelet option for lease duration
- add Kubelet-internal lease controller to create and update lease
- add e2e test for NodeLease feature
- modify node authorizer and node restriction admission controller
to allow Kubelets access to corresponding leases
Automatic merge from submit-queue (batch tested with PRs 65247, 63633, 67425). 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 kubelet iptclient in ipv6 cluster
**What this PR does / why we need it**:
Kubelet uses "iptables" instead of "ip6tables" in an ipv6-only cluster. This causes failed traffic for type: LoadBalancer services (and probably a lot of other problems).
**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#67398
**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>.
remove rescheduler since scheduling DS pods by default scheduler is moving to beta
**What this PR does / why we need it**:
remove rescheduler since scheduling DS pods by default scheduler is moving to beta
**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#64725
**Special notes for your reviewer**:
**Release note**:
```release-note
Remove rescheduler since scheduling DS pods by default scheduler is moving to beta.
```
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>.
Reduce latency to node ready after CIDR is assigned.
This adds code to execute an immediate runtime and node status update when the Kubelet sees that it has a CIDR, which significantly decreases the latency to node ready.
```release-note
Speed up kubelet start time by executing an immediate runtime and node status update when the Kubelet sees that it has a CIDR.
```
Automatic merge from submit-queue (batch tested with PRs 67430, 67550). 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>.
cpumanager: rollback state if updateContainerCPUSet failed
**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#63018
If `updateContainerCPUSet` failed, the container will start failed. We should rollback the state to avoid CPU leak.
**Special notes for your reviewer**:
**Release note**:
```release-note
cpumanager: rollback state if updateContainerCPUSet failed
```
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>.
Add labels to kubelet OWNERS files
**What this PR does / why we need it**:
This change makes it possible to automatically add the two labels: `area/kubelet` to PRs that touch the paths in question.
this already exists for kubeadm:
https://github.com/kubernetes/kubernetes/blob/master/cmd/kubeadm/OWNERS#L17-L19
**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
refs https://github.com/kubernetes/community/issues/1808
**Special notes for your reviewer**:
none
**Release note**:
```release-note
NONE
```
/area kubelet
@kubernetes/sig-node-pr-reviews
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>.
Add Labels to various OWNERS files
**What this PR does / why we need it**:
Will reduce the burden of manually adding labels. Information pulled
from:
https://github.com/kubernetes/community/blob/master/sigs.yaml
Change-Id: I17e661e37719f0bccf63e41347b628269cef7c8b
**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 (batch tested with PRs 67661, 67497, 66523, 67622, 67632). 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>.
Reduce verbose logs of node addresses requesting
**What this PR does / why we need it**:
Kubelet build from the master branch is flushing node addresses requesting logs, which is too verbose:
```sh
Aug 16 10:09:40 node-1 kubelet[24217]: I0816 10:09:40.658479 24217 cloud_request_manager.go:97] Requesting node addresses from cloud provider for node "node-1"
Aug 16 10:09:40 node-1 kubelet[24217]: I0816 10:09:40.666114 24217 cloud_request_manager.go:116] Node addresses from cloud provider for node "node-1" collected
Aug 16 10:09:50 node-1 kubelet[24217]: I0816 10:09:50.666357 24217 cloud_request_manager.go:97] Requesting node addresses from cloud provider for node "node-1"
Aug 16 10:09:50 node-1 kubelet[24217]: I0816 10:09:50.674322 24217 cloud_request_manager.go:116] Node addresses from cloud provider for node "node-1" collected
Aug 16 10:10:01 node-1 kubelet[24217]: I0816 10:10:00.674644 24217 cloud_request_manager.go:97] Requesting node addresses from cloud provider for node "node-1"
Aug 16 10:10:01 node-1 kubelet[24217]: I0816 10:10:00.682794 24217 cloud_request_manager.go:116] Node addresses from cloud provider for node "node-1" collected
Aug 16 10:10:10 node-1 kubelet[24217]: I0816 10:10:10.683002 24217 cloud_request_manager.go:97] Requesting node addresses from cloud provider for node "node-1"
Aug 16 10:10:10 node-1 kubelet[24217]: I0816 10:10:10.689641 24217 cloud_request_manager.go:116] Node addresses from cloud provider for node "node-1" collected
Aug 16 10:10:20 node-1 kubelet[24217]: I0816 10:10:20.690006 24217 cloud_request_manager.go:97] Requesting node addresses from cloud provider for node "node-1"
Aug 16 10:10:20 node-1 kubelet[24217]: I0816 10:10:20.696545 24217 cloud_request_manager.go:116] Node addresses from cloud provider for node "node-1" collected
```
This PR sets them to level 5.
**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
```
/cc @ingvagabund
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Fail container start if its requested device plugin resource is unknown.
With the change, Kubelet device manager now checks whether it has cached option state for the requested device plugin resource to make sure the resource is in ready state when we start the container.
**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/67107
**Special notes for your reviewer**:
**Release note**:
```release-note
Fail container start if its requested device plugin resource hasn't registered after Kubelet restart.
```
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