We avoid deepcopies in the codec/conversion stack by re-using data structures.
This means that the out object of a conversion must be deepcopied before mutation
in order to not mutate the in object as well.
This guarantees that e.g. runtime.Encode (which uses conversion from internal -> versioned)
does not mutate the input. This would be highly unexpected (and we do not mention possible
mutation of the input for runtime.Encode).
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[gce provider] More wrappers for alpha/beta backend service
**What this PR does / why we need it**:
Sorry, some more wrapper functions I missed last time.
**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 #NONE
**Special notes for your reviewer**:
/assign @rramkumar1
**Release note**:
```release-note
NONE
```
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apiserver: update tests to use sub-benchmarks (aes_test.go)
**What this PR does / why we need it**:
Go 1.7 added the subtest feature which can make table-driven tests much easier to run and debug. Some tests are not using this feature.
Further reading: [Using Subtests and Sub-benchmarks](https://blog.golang.org/subtests)
/kind cleanup
**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 and corresponding tests from master
**What this PR does / why we need it**:
This is to remove rescheduler from master branch as we are promoting priority and preemption 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)*:
Part of #57471
**Special notes for your reviewer**:
/cc @bsalamat @aveshagarwal
**Release note**:
```release-note
Remove rescheduler from master.
```
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Declare IPVS-based kube-proxy GA and remove feature gateway
**What this PR does / why we need it**:
As discussed in sig-network meeting, we decided to target IPVS-based kube-proxy GA in 1.10.
This PR declares IPVS-based kube-proxy GA and remove feature gateway.
**Which issue(s) this PR fixes**:
Fixes: #58443
issue in feature repo: https://github.com/kubernetes/features/issues/265
**Special notes for your reviewer**:
**Release note**:
```release-note
Declare IPVS-based kube-proxy GA
```
@quinton-hoole
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kubeadm: conditionally set the kubelet cgroup driver for Docker
**What this PR does / why we need it**:
Add a new utility file - util/cgroupdriver.go.
Currently it only contains the public function GetCgroupDriverDocker().
The function uses 'docker info' to obtain the cgroup driver
for Docker.
On a later stage this file can contain more methods for different
CRI.
Use GetCgroupDriverDocker() in phases/kubelet/flags.go
to conditionally set the 'cgroup-driver' argument. On error
print a warning and don't set the argument value.
Add unit tests in cgroupdriver_test.go.
**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#844
**Special notes for your reviewer**:
NONE
**Release note**:
```release-note
kubeadm: conditionally set the kubelet cgroup driver for Docker
```
/area kubeadm
/kind enhancement
@kubernetes/sig-cluster-lifecycle-pr-reviews
@luxas
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remove unused parameter in func buildFakeProxier
**What this PR does / why we need it**:
remove unused parameter in func buildFakeProxier
**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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remove unused status per TODO
This should have been deleted in #63221, as it is now unused.
```release-note
NONE
```
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Add KUBE_CGO_OVERRIDES env var to force enabling CGO
**What this PR does / why we need it**: as detailed in https://github.com/kubernetes/release/issues/469 (and elsewhere), there is a desire to have `kubectl` built with CGO enabled on mac OS.
There currently isn't a great way to do this in our official cross builds, but we should allow mac users to build their own kubectl with CGO enabled if they desire, e.g. through homebrew.
This change enables that; you can now do `KUBE_CGO_OVERRIDES=kubectl make WHAT=cmd/kubectl` and get a cgo-enabled `kubectl`.
The default build outputs remain unchanged.
**Release note**:
```release-note
kubectl built for darwin from darwin now enables cgo to use the system-native C libraries for DNS resolution. Cross-compiled kubectl (e.g. from an official kubernetes release) still uses the go-native netgo DNS implementation.
```
/assign @BenTheElder @cblecker
cc @bks7 @bitglue
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[GCE] use fakeGCECloud instead of gce address fakes
**What this PR does / why we need it**:
Use the fakeGCECloud mock instead of FakeCloudAddressService.
**Release note**:
```release-note
NONE
```
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Allow AWS EBS volumes to be attached as ReadOnly.
**Which issue(s) this PR fixes**
Fixes#64402
**Special notes for your reviewer**:
This follows logic e.g. in Cinder volume plugin.
**Release note**:
```release-note
AWS EBS volumes can be now used as ReadOnly in pods.
```
/sig storage
/sig aws
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services must listen on port 443 for aggregation
If a clusterIP service isn't listening on port 443, don't mark it as available.
@mfojtik you've got an issue, right?
@kubernetes/sig-api-machinery-bugs
/assign @sttts
/kind bug
```release-note
NONE
```
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should not ignore err when convert api version
**What this PR does / why we need it**:
should not ignore err when convert api version
**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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remove CrictlChecker from preflight checks
**What this PR does / why we need it**:
CrictlChecker uses InPathCheck to check if crictl presents
in the PATH. The same check is done in CRICheck function.
CrictlChecker is also called unconditionally, producing messages
that can confuse users. CRICheck is called only when needed, i.e.
when user specifies CRI socket.
**Release note**:
```release-note
NONE
```
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small nit in the annotations of pkg/kubelet/container/os.go
**What this PR does / why we need it**:
just a small nit in the annotations of container/os.go, but, it looks quite uncomfortable cause others all get right.
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Remove some unnecessarily gendered pronouns in comments
**What this PR does / why we need it**:
A bunch of comments are unnecessarily gendered. I've changed them to gender-neutral they/theirs.
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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Improve the help of kubeadm completion
**What this PR does / why we need it**:
Add note that 'bash-completion' is required on Linux too.
**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/#860](https://github.com/kubernetes/kubeadm/issues/860)
**Special notes for your reviewer**:
cc @neolit123
**Release note**:
```release-note
NONE
```
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add a flag to control the cap on images reported in node status
While I normally try to avoid adding flags, this is a short term
scalability fix for v1.11, and there are other long-term solutions in
the works, so we shouldn't commit to this in the v1beta1 Kubelet config.
Flags are our escape hatch here.
```release-note
NONE
```
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fix toleration validation invalid error
Fixes#64301
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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Add TLS support to exec authenticator plugin
**What this PR does / why we need it**:
https://github.com/kubernetes/community/blob/master/contributors/design-proposals/auth/kubectl-exec-plugins.md#tls-client-certificate-support
Allows exec plugin to return raw TLS key/cert data. This data populates
transport.Config.TLS field.
This requires a change to AuthProvider interface to expose TLS configs,
not only RoundTripper.
**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#61421
**Special notes for your reviewer**:
**Release note**:
```release-note
Exec authenticator plugin supports TLS client certificates.
```
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Dynamic env in subpath - Fixes Issue 48677
**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#48677
**Special notes for your reviewer**:
**Release note**:
```release-note
Adds the VolumeSubpathEnvExpansion alpha feature to support environment variable expansion
Sub-paths cannot be mounted with a dynamic volume mount name.
This fix provides environment variable expansion to sub paths
This reduces the need to manage symbolic linking within sidecar init containers to achieve the same goal
```
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fix persist typo
I wonder this pr should pull to kubernetes/kubernetes or kubernetes/client-go ?
```
NONE
```
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Possible cipher suites values and tls versions in help for apiserver and kubelet
**What this PR does / why we need it**:
Addresses a suggestion made by @lavalamp to list the possible TLS cipher suites in the kubelet and apiserver helps: https://github.com/kubernetes/kubernetes/pull/48859#discussion_r162413223
**Which issue(s) this PR fixes**
NONE
**Special notes for your reviewer**:
This pull request only adds to the help message the possible values of the TLS Cipher suites for Kubelet and api server.
It is an addition to the already merged PR https://github.com/kubernetes/kubernetes/pull/48859
The help output looks like this:
```
--tls-cert-file string File containing the default x509 Certificate for HTTPS. (CA cert, if any, concatenated after server cert). If HTTPS serving is enabled, and --tls-cert-file and --tls-private-key-file are not provided, a self-signed certificate and key are generated for the public address and saved to the directory specified by --cert-dir.
--tls-cipher-suites strings Comma-separated list of cipher suites for the server. Values are from tls package constants (https://golang.org/pkg/crypto/tls/#pkg-constants). If omitted, the default Go cipher suites will be use. Possible values: TLS_ECDHE_ECDSA_WITH_RC4_128_SHA,TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256,TLS_RSA_WITH_RC4_128_SHA,TLS_RSA_WITH_AES_256_CBC_SHA,TLS_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,TLS_RSA_WITH_3DES_EDE_CBC_SHA,TLS_RSA_WITH_AES_128_CBC_SHA,TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305,TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305,TLS_RSA_WITH_AES_128_CBC_SHA256,TLS_ECDHE_RSA_WITH_RC4_128_SHA,TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256,TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,TLS_RSA_WITH_AES_256_GCM_SHA384,TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
--tls-min-version string Minimum TLS version supported. Value must match version names from https://golang.org/pkg/crypto/tls/#pkg-constants.
--tls-private-key-file string File containing the default x509 private key matching --tls-cert-file.
```
**Release note**:
```release-note
NONE
```
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Whitelist CronJob for kubectl apply --prune
**What this PR does / why we need it**:
Support CronJob for kubectl apply --prune
**Special notes for your reviewer**: N/A
**Release note**:
```release-note
kubectl apply --prune supports CronJob resource.
```
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Use default seccomp profile for flutend-elasticsearch addons
**What this PR does / why we need it**:
This PR sets the default seccomp profile to 'docker/default' for:
- fluentd-es daemon set.
- kibana-logging deployment.
The elasticsearch-logging stateful set is still unconfined because it uses gce:podsecuritypolicy:privileged.
This PR is a followup of #62662. We are using 'docker/default' instead of 'runtime/default' in addons in order to handle node version skew. When seccomp profile is applied automatically by default later, we can remove those annotations.
This is PR is part of #39845.
**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
```
While I normally try to avoid adding flags, this is a short term
scalability fix for v1.11, and there are other long-term solutions in
the works, so we shouldn't commit to this in the v1beta1 Kubelet config.
Flags are our escape hatch.
Automatic merge from submit-queue (batch tested with PRs 64318, 64269, 64438, 64516, 64311). 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 error message to be consistent with others
**Special notes for your reviewer**:
/assign @juanvallejo
**Release note**:
```release-note
NONE
```
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include rollout object name in cli message
**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#64331
**Special notes for your reviewer**:
/cc soltysh
**Release note**:
```release-note
None
```
Automatic merge from submit-queue (batch tested with PRs 64318, 64269, 64438, 64516, 64311). 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>.
UX improvement for preflight check for external etcd client certificates
**What this PR does / why we need it**:
UX improvement for preflight check for external etcd client certificates
By using same preflight check label for all etcd client certificates, it will
allow user to use single identifier, and as result shorter command line
arguments to kubeadm, in case multiple issues found with those files.
Fixes:
**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#834
**Special notes for your reviewer**:
**Release note**:
```release-note
Label ExternalEtcdClientCertificates can be used for ignoring all preflight check issues related to client certificate files for external etcd.
```
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Ensure that only IPs are used as node addresses in OpenStack LBs
**What this PR does / why we need it**:
ATM, when no InternalIP can be found for a node, the openstack cloud provider tries to create a LB with whatever is the first address it can find for the node. This could also be the hostname or a dns name.
However, LBaaS will reject anything that is not an IP address for pool members. Therefore a meaningful error should be returned instead of just returning the first address of the node, even if it is clear that this will lead to an error in LBaaS.
**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#64317
**Special notes for your reviewer**:
**Release note**:
```release-note
Provide a meaningful error message in openstack cloud provider when no valid IP address can be found for a node
```
Add a new utility file - util/cgroupdriver.go.
Currently it only contains the public function GetCgroupDriverDocker().
The function uses 'docker info' to obtain the cgroup driver
for Docker.
On a later stage this file can contain more methods for different
CRI.
Use GetCgroupDriverDocker() in phases/kubelet/flags.go
to conditionally set the 'cgroup-driver' argument. On error
print a warning and don't set the argument value.
Add unit tests in cgroupdriver_test.go.
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apiserver: update tests to use sub-benchmarks (secretbox_test.go)
**What this PR does / why we need it**:
Go 1.7 added the subtest feature which can make table-driven tests much easier to run and debug. Some tests are not using this feature.
Further reading: [Using Subtests and Sub-benchmarks](https://blog.golang.org/subtests)
/kind cleanup
**Release note**:
```release-note
NONE
```
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kubeadm: Add a 'kubeadm config migrate' command
**What this PR does / why we need it**:
This is an UX improvement so users may easier "upgrade" their **configuration files** from the an old version (e.g. `v1alpha1`) version to a new one (e.g. `v1alpha2`), can do this **locally and seamlessly without touching a cluster**. We talked about this in the SIG meeting; getting the users to be able to convert their checked-in configuration files to new API versions will be crucial.
**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 'kubeadm config migrate' command to convert old API types to their newer counterparts in the new, supported API types. This is just a client-side tool, it just executes locally without requiring a cluster to be running. You can think about this as an Unix pipe that upgrades config files.
```
@kubernetes/sig-cluster-lifecycle-pr-reviews @liztio
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Add dry-run flag to auth reconcile
```release-note
The --dry-run flag has been enabled for kubectl auth reconcile
```
/assign @juanvallejo
cc @enj
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kubeadm: Move .NodeName and .CRISocket to a common sub-struct
**What this PR does / why we need it**:
Regroups some common fields for `kubeadm init` and `kubeadm join` only used for the initial node registration.
Lets the user specify ExtraArgs to the kubelet.
Now also runs the dynamic env file creation for `kubeadm join`.
**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/kubeadm/issues/847
Follows-up https://github.com/kubernetes/kubernetes/pull/63887
Related to kubernetes/kubeadm#822
**Special notes for your reviewer**: WIP, but please review so we can finalize the direction of the PR
**Release note**:
```release-note
[action required] `.NodeName` and `.CRISocket` in the `MasterConfiguration` and `NodeConfiguration` v1alpha1 API objects are now `.NodeRegistration.Name` and `.NodeRegistration.CRISocket` respectively in the v1alpha2 API. The `.NoTaintMaster` field has been removed in the v1alpha2 API.
```
@kubernetes/sig-cluster-lifecycle-pr-reviews @liztio
Dr. Stefan Schimanski