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Add a short `-n` for `kubectl --namespace`
fixes#24078
`--namespace` is a very common flag for nearly every `kubectl` command we have. We should claim `-n` for it.
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more explictly about NoDiskConflicts policy and applicable volume types
partially clarify #29670
@kubernetes/sig-scheduling
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Incorrect branch name for git push command in development.md
the branch name is "my-feature":
### Create a branch and make changes
```sh
git checkout -b my-feature
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Quobyte Volume plugin
@quofelix and myself developed a volume plugin for [Quobyte](http://www.quobyte.com) which is a software-defined storage solution. This PR allows Kubernetes users to mount a Quobyte Volume inside their containers over Kubernetes.
Here are some further informations about [Quobyte and Storage for containers](http://www.quobyte.com/containers)
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Implement dynamic provisioning (beta) of PersistentVolumes via StorageClass
Implemented according to PR #26908. There are several patches in this PR with one huge code regen inside.
* Please review the API changes (the first patch) carefully, sometimes I don't know what the code is doing...
* `PV.Spec.Class` and `PVC.Spec.Class` is not implemented, use annotation `volume.alpha.kubernetes.io/storage-class`
* See e2e test and integration test changes - Kubernetes won't provision a thing without explicit configuration of at least one `StorageClass` instance!
* Multiple provisioning volume plugins can coexist together, e.g. HostPath and AWS EBS. This is important for Gluster and RBD provisioners in #25026
* Contradicting the proposal, `claim.Selector` and `volume.alpha.kubernetes.io/storage-class` annotation are **not** mutually exclusive. They're both used for matching existing PVs. However, only `volume.alpha.kubernetes.io/storage-class` is used for provisioning, configuration of provisioning with `Selector` is left for (near) future.
* Documentation is missing. Can please someone write some while I am out?
For now, AWS volume plugin accepts classes with these parameters:
```
kind: StorageClass
metadata:
name: slow
provisionerType: kubernetes.io/aws-ebs
provisionerParameters:
type: io1
zone: us-east-1d
iopsPerGB: 10
```
* parameters are case-insensitive
* `type`: `io1`, `gp2`, `sc1`, `st1`. See AWS docs for details
* `iopsPerGB`: only for `io1` volumes. I/O operations per second per GiB. AWS volume plugin multiplies this with size of requested volume to compute IOPS of the volume and caps it at 20 000 IOPS (maximum supported by AWS, see AWS docs).
* of course, the plugin will use some defaults when a parameter is omitted in a `StorageClass` instance (`gp2` in the same zone as in 1.3).
GCE:
```
apiVersion: extensions/v1beta1
kind: StorageClass
metadata:
name: slow
provisionerType: kubernetes.io/gce-pd
provisionerParameters:
type: pd-standard
zone: us-central1-a
```
* `type`: `pd-standard` or `pd-ssd`
* `zone`: GCE zone
* of course, the plugin will use some defaults when a parameter is omitted in a `StorageClass` instance (SSD in the same zone as in 1.3 ?).
No OpenStack/Cinder yet
@kubernetes/sig-storage
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kubelet eviction on inode exhaustion
Add support for kubelet to monitor for inode exhaustion of either image or rootfs, and in response, attempt to reclaim node level resources and/or evict pods.
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Allow setting permission mode bits on secrets, configmaps and downwardAPI files
cc @thockin @pmorie
Here is the first round to implement: https://github.com/kubernetes/kubernetes/pull/28733.
I made two commits: one with the actual change and the other with the auto-generated code. I think it's easier to review this way, but let me know if you prefer in some other way.
I haven't written any tests yet, I wanted to have a first glance and not write them till this (and the API) are more close to the "LGTM" :)
There are some things:
* I'm not sure where to do the "AND 0777". I'll try to look better in the code base, but suggestions are always welcome :)
* The write permission on group and others is not set when you do an `ls -l` on the running container. It does work with write permissions to the owner. Debugging seems to show that is something happening after this is correctly set on creation. Will look closer.
* The default permission (when the new fields are not specified) are the same that on kubernetes v1.3
* I do realize there are conflicts with master, but I think this is good enough to have a look. The conflicts is with the autog-enerated code, so the actual code is actually the same (and it takes like ~30 minutes to generate it here)
* I didn't generate the docs (`generated-docs` and `generated-swagger-docs` from `hack/update-all.sh`) because my machine runs out of mem. So that's why it isn't in this first PR, will try to investigate and see why it happens.
Other than that, this works fine here with some silly scripts I did to create a secret&configmap&downwardAPI, a pod and check the file permissions. Tested the "defaultMode" and "mode" for all. But of course, will write tests once this is looking fine :)
Thanks a lot again!
Rodrigo
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Remove incorrect docs about unset fields in NetworkPolicyPeer
While hammering out the semantics of not-present vs present-but-empty, we appear to have added incorrect clarifications to NetworkPolicyPeer, where the semantics of PodSelector not being present is supposed to be "do what NamespaceSelector" says, not "select no pods", and likewise with NamespaceSelector not being present.
I think it's clearest if we just don't say anything, since we already said "Exactly one of the following must be specified" above. Alternatively we could be redundant and say "(If not provided, then NamespaceSelector must be set.)" or something like that.
@caseydavenport @thockin
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re-organize development.md
Addresses issue #13876; reorganizes and cleans up parts of development.md; splits out the godep section for managing `vendor/` tree dependencies into a new godep.md file.
```release-note
The developer guide has been reorganized to facilitate the majority of new developers working on Kubernetes.
```
Signed-off-by: Mike Brown <brownwm@us.ibm.com>
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Add NodeName to EndpointAddress object
Adding a new string type `nodeName` to api.EndpointAddress.
We could also do *ObjectReference to the api.Node object instead, which would be more precise for the future.
```
type ObjectReference struct {
Kind string `json:"kind,omitempty"`
Namespace string `json:"namespace,omitempty"`
Name string `json:"name,omitempty"`
UID types.UID `json:"uid,omitempty"`
APIVersion string `json:"apiVersion,omitempty"`
ResourceVersion string `json:"resourceVersion,omitempty"`
// Optional. If referring to a piece of an object instead of an entire object, this string
// should contain information to identify the sub-object. For example, if the object
// reference is to a container within a pod, this would take on a value like:
// "spec.containers{name}" (where "name" refers to the name of the container that triggered
// the event) or if no container name is specified "spec.containers[2]" (container with
// index 2 in this pod). This syntax is chosen only to have some well-defined way of
// referencing a part of an object.
// TODO: this design is not final and this field is subject to change in the future.
FieldPath string `json:"fieldPath,omitempty"`
}
```
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docs/proposal: add proposal for kubectl login
This PR updates https://github.com/kubernetes/features/issues/32 and https://github.com/kubernetes/kubernetes/pull/25758 by adding a proposal for a "kubectl login" command.
It's a bit more involved than the implementation discussed with @deads2k in #25758, by proposing a long term goal for the overall subcommand.
cc @kubernetes/sig-auth @kubernetes/kubectl
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Implement 'kubectl top' command
```release-note
Added 'kubectl top' command showing the resource usage metrics.
```
Sample output:
Nodes:
```
$ kubectl top node
NAME CPU MEMORY STORAGE TIMESTAMP
kubernetes-minion-group-xxxx 76m 1468 Mi 0 Mi Tue, 12 Jul 2016 17:37:00 +0200
kubernetes-minion-group-yyyy 73m 1511 Mi 0 Mi Tue, 12 Jul 2016 17:37:00 +0200
kubernetes-minion-group-zzzz 46m 1506 Mi 0 Mi Tue, 12 Jul 2016 17:37:00 +0200
kubernetes-master 76m 2059 Mi 0 Mi Tue, 12 Jul 2016 17:37:00 +0200
```
Pods in all namespaces:
```
$ kubectl top pod --all-namespaces
NAMESPACE NAME CPU MEMORY STORAGE TIMESTAMP
default nginx-1111111111-zzzzz 0m 1 Mi 0 Mi Tue, 12 Jul 2016 17:49:00 +0200
kube-system etcd-server-kubernetes-master 4m 116 Mi 0 Mi Tue, 12 Jul 2016 17:49:00 +0200
kube-system fluentd-cloud-logging-kubernetes-minion-group-xxxx 14m 110 Mi 0 Mi Tue, 12 Jul 2016 17:49:00 +0200
kube-system kube-dns-v18-zzzzz 1m 6 Mi 0 Mi Tue, 12 Jul 2016 17:49:00 +0200
...
```
Pod with containers:
```
$ kubectl top pod heapster-v1.1.0-1111111111-miail --namespace=kube-system --containers
NAMESPACE NAME CPU MEMORY STORAGE TIMESTAMP
kube-system heapster-v1.1.0-1111111111-miail 1m 42 Mi 0 Mi Tue, 12 Jul 2016 17:52:00 +0200
heapster 1m 26 Mi 0 Mi
eventer 0m 3 Mi 0 Mi
heapster-nanny 0m 6 Mi 0 Mi
eventer-nanny 0m 6 Mi 0 Mi
```
ref #11382
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component feature config proposal
This adds a proposal for a simple mechanism to pass runtime config to kube system components. Motivation is to have a consistent way to toggle new features that are not tied to an API group. Feedback appreciated
@mikedanese @lavalamp @kubernetes/sig-api-machinery @kubernetes/sig-cluster-lifecycle @kubernetes/sig-node
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