Kubernetes Submit Queue 63a05c8bc9 Merge pull request #60720 from dashpole/allocatable_flake
Automatic merge from submit-queue (batch tested with PRs 60159, 60731, 60720, 60736, 60740). 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>.

[Flaky Test] Increase amount of memory filled by memory allocatable eviction test

**What this PR does / why we need it**:
MemoryAllocatableEviction tests have been somewhat flaky: https://k8s-testgrid.appspot.com/sig-node-kubelet#kubelet-serial-gce-e2e&include-filter-by-regex=MemoryAllocatable
The failure on the flakes is ["Pod ran to completion"](https://k8s-gubernator.appspot.com/build/kubernetes-jenkins/logs/ci-kubernetes-node-kubelet-serial/3785#k8sio-memoryallocatableeviction-slow-serial-disruptive-when-we-run-containers-that-should-cause-memorypressure-should-eventually-evict-all-of-the-correct-pods).
Looking at [an example log](https://storage.googleapis.com/kubernetes-jenkins/logs/ci-kubernetes-node-kubelet-serial/3785/artifacts/tmp-node-e2e-6070a774-cos-stable-63-10032-71-0/kubelet.log) (and search for memory-hog-pod, we can see that this pod fails admission because the allocatable memory threshold has already been crossed.
`eviction manager: thresholds - ignoring grace period: threshold [signal=allocatableMemory.available, quantity=250Mi] observed 242404Ki`
There is likely memory usage because the allocatable cgroup is not low on memory, and thus has not reclaimed all pages belonging to previous test containers.  Of the 300Mi of capacity in the allocatalbe cgroup, 250Mi is reserved for the eviction threshold, and only 50 is left for the test.  Increasing this to a 400Mi cgroup limit, with 150Mi for pods should eliminate this flake.

**Release note**:
```release-note
NONE
```

/sig node
/kind bug
/priority critical-urgent
/assign @Random-Liu @yujuhong
2018-03-02 18:35:55 -08:00
2017-10-12 09:38:56 -07:00
2017-09-09 13:38:29 +08:00
2018-02-06 13:48:18 +08:00
2018-02-01 19:11:19 +08:00
2018-02-22 12:20:54 -08:00
2017-12-20 13:33:36 -05:00
2017-08-10 11:59:54 -07:00
2018-02-11 04:34:01 +00:00
2017-08-11 14:42:36 -04:00

Kubernetes

Submit Queue Widget GoDoc Widget CII Best Practices


Kubernetes is an open source system for managing containerized applications across multiple hosts; providing basic mechanisms for deployment, maintenance, and scaling of applications.

Kubernetes builds upon a decade and a half of experience at Google running production workloads at scale using a system called Borg, combined with best-of-breed ideas and practices from the community.

Kubernetes is hosted by the Cloud Native Computing Foundation (CNCF). If you are a company that wants to help shape the evolution of technologies that are container-packaged, dynamically-scheduled and microservices-oriented, consider joining the CNCF. For details about who's involved and how Kubernetes plays a role, read the CNCF announcement.


To start using Kubernetes

See our documentation on kubernetes.io.

Try our interactive tutorial.

Take a free course on Scalable Microservices with Kubernetes.

To start developing Kubernetes

The community repository hosts all information about building Kubernetes from source, how to contribute code and documentation, who to contact about what, etc.

If you want to build Kubernetes right away there are two options:

You have a working Go environment.
$ go get -d k8s.io/kubernetes
$ cd $GOPATH/src/k8s.io/kubernetes
$ make
You have a working Docker environment.
$ git clone https://github.com/kubernetes/kubernetes
$ cd kubernetes
$ make quick-release

For the full story, head over to the developer's documentation.

Support

If you need support, start with the troubleshooting guide, and work your way through the process that we've outlined.

That said, if you have questions, reach out to us one way or another.

Analytics

Description
No description provided
Readme 1,019 MiB
Languages
Go 97%
Shell 2.6%
PowerShell 0.2%