494ffa4650
Automatic merge from submit-queue (batch tested with PRs 48425, 41680, 48457, 48619, 48635) "rbd: image xxx is locked by other nodes" is misleading **What this PR does / why we need it**: For RWO PV, RBD plugin tries to fence it first, but there are many situations which may cause lock to fail, e.g. - userSecret is incorrect - monitor addresses are incorrect or node cannot access ceph cluster temporarily - image is locked by other nodes - maybe more... So, original "image xxx is locked by other nodes" is incorrect in some cases and misleading in diagnosis. This PR change the error to be correct and not misleading first. We may add detail error descriptions later. **Special notes for your reviewer**: New FailedMount event example if RBD plugin cannot lock image: ``` ... FailedMount MountVolume.SetUp failed for volume "pvc-ee37a9c8-608e-11e7-b3a7-000c291fbe71" : rbd: failed to lock image kubernetes-dynamic-pvc-ee3b9911-608e-11e7-97b6-000c291fbe71 (maybe locked by other nodes), error exit status 22 ``` **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
If you are less impatient, 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.