481b2dc7cf
Automatic merge from submit-queue (batch tested with PRs 64013, 63896, 64139, 57527, 62102). 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>. Setup fsGroup for local volumes correctly **What this PR does / why we need it**: This pr fixes fsGroup check in local volume in containerized kubelet. Except this, it also fixes fsGroup check when volume source is a normal directory whether kubelet is running on the host or in a container. **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 #61741 **Special notes for your reviewer**: Bind mounts are detected in `/proc/mounts`, but it does not contain root of mount for bind mounts. So `mount.GetMountRefsByDev()` cannot get all references if source is a normal directory. e.g. ``` # mkdir /tmp/src /mnt/dst # mount --bind /tmp/src /tmp/src # required by local-volume-provisioner, see https://github.com/kubernetes-incubator/external-storage/pull/499 # mount --bind /tmp/src /mnt/dst # grep -P 'src|dst' /proc/mounts tmpfs /tmp/src tmpfs rw,nosuid,nodev,noatime,size=4194304k 0 0 tmpfs /mnt/dst tmpfs rw,nosuid,nodev,noatime,size=4194304k 0 0 # grep -P 'src|dst' /proc/self/mountinfo 234 409 0:42 /src /tmp/src rw,nosuid,nodev,noatime shared:30 - tmpfs tmpfs rw,size=4194304k 235 24 0:42 /src /mnt/dst rw,nosuid,nodev,noatime shared:30 - tmpfs tmpfs rw,size=4194304k ``` We need to compare root of mount and device in this case. **Release note**: ```release-note NONE ``` |
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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.