189a166ace
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>. Fix summary_test to work when XFS is used under overlay2 and add a check for Delegate=yes missing from docker.service **What this PR does / why we need it**: This fixes the summary_test checks to work in cases where: 1. Docker is using overlay2 for its images with XFS as backing filesystem. 1. The systemd unit for Docker does not include Delegate=yes. The former will break RootFs minimum usage check from summary_test, since it expects _some_ usage even though the upper layer only contains directories that are used as mount points. It turns out the XFS filesystem returns "0" blocks in the stat() result for a directory, so this breaks the test. Fix it by creating a file with some small contents in the test, so that `du` will actually return some usage. **NOTE**: I introduced this step in the loop part of the function. It works, but maybe it's not the best... Let me know if you think we should do some small cleanup here too, I'd be happy to do that. Regarding the latter, when `Delegate=yes` is not included in `docker.service`, then systemd might choose not to create Memory and CPU cgroups (actually, any of the resource cgroups) for the unit when it starts it. It's a bit more complicated than that, because it *does* create them if any sibling units need it, so the behavior is a bit hard to control... In any case, here we're checking on it and accepting that we might get a "nil" from cAdvisor in cases where `Delegate=yes` is missing. Both of these issues can be found on CentOS/RHEL, that's the motivation for the 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)*: N/A **Special notes for your reviewer**: /assign dashpole **Release note**: ```release-note NONE ``` |
||
|---|---|---|
| .github | ||
| api | ||
| build | ||
| cluster | ||
| cmd | ||
| docs | ||
| examples | ||
| Godeps | ||
| hack | ||
| logo | ||
| pkg | ||
| plugin | ||
| staging | ||
| test | ||
| third_party | ||
| translations | ||
| vendor | ||
| .bazelrc | ||
| .generated_files | ||
| .gitattributes | ||
| .gitignore | ||
| .kazelcfg.json | ||
| BUILD.bazel | ||
| CHANGELOG-1.2.md | ||
| CHANGELOG-1.3.md | ||
| CHANGELOG-1.4.md | ||
| CHANGELOG-1.5.md | ||
| CHANGELOG-1.6.md | ||
| CHANGELOG-1.7.md | ||
| CHANGELOG-1.8.md | ||
| CHANGELOG-1.9.md | ||
| CHANGELOG-1.10.md | ||
| CHANGELOG.md | ||
| code-of-conduct.md | ||
| CONTRIBUTING.md | ||
| labels.yaml | ||
| LICENSE | ||
| Makefile | ||
| Makefile.generated_files | ||
| OWNERS | ||
| OWNERS_ALIASES | ||
| README.md | ||
| SUPPORT.md | ||
| WORKSPACE | ||
Kubernetes
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.