44bed94f0e
`kubectl cp` relies on tar to extract the copied file/directory in the container, tar by default attempts to chown/chmod the extracted file after extraction if the user is the "superuser"(root) ``` --same-owner try extracting files with the same ownership as exists in the archive (default for superuser) -p, --preserve-permissions, --same-permissions extract information about file permissions (default for superuser) ``` This fails in environment where the container runs as root but is not granted the OWNER or CHOWN capability. Before this patch below was the behavior of `kubectl cp` ``` kubectl cp README.md foo-67b6fcbd4c-qjlt6:/tmp tar: README.md: Cannot change ownership to uid 1000, gid 1000: Operation not permitted tar: Exiting with failure status due to previous errors command terminated with exit code 2 kubectl exec -it foo-67b6fcbd4c-qjlt6 -- ls -l /tmp/README.md -rw------- 1 1000 1000 3179 Oct 7 22:00 /tmp/README.md ``` After this patch ``` kubectl cp -x a foo-67b6fcbd4c-qjlt6:/ kubectl exec -it foo-67b6fcbd4c-qjlt6 -- ls -l /tmp/README.md -rw-r--r-- 1 root root 3179 Oct 7 22:00 /tmp/README.md ``` |
||
|---|---|---|
| .github | ||
| Godeps | ||
| api | ||
| build | ||
| cluster | ||
| cmd | ||
| docs | ||
| 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-1.11.md | ||
| CHANGELOG-1.12.md | ||
| CHANGELOG.md | ||
| CONTRIBUTING.md | ||
| LICENSE | ||
| Makefile | ||
| Makefile.generated_files | ||
| OWNERS | ||
| OWNERS_ALIASES | ||
| README.md | ||
| SECURITY_CONTACTS | ||
| SUPPORT.md | ||
| WORKSPACE | ||
| code-of-conduct.md | ||
README.md
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.