1902a18c88
Automatic merge from submit-queue (batch tested with PRs 60435, 60334, 60458, 59301, 60125). 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>. dockershim: don't check pod IP in StopPodSandbox We're about to tear the container down, there's no point. It also suppresses an annoying error message due to kubelet stupidity that causes multiple parallel calls to StopPodSandbox for the same sandbox. docker_sandbox.go:355] failed to read pod IP from plugin/docker: NetworkPlugin cni failed on the status hook for pod "docker-registry-1-deploy_default": Unexpected command output nsenter: cannot open /proc/22646/ns/net: No such file or directory 1) A first StopPodSandbox() request triggered by SyncLoop(PLEG) for a ContainerDied event calls into TearDownPod() and thus the network plugin. Until this completes, networkReady=true for the sandbox. 2) A second StopPodSandbox() request triggered by SyncLoop(REMOVE) calls PodSandboxStatus() and calls into the network plugin to read the IP address because networkReady=true 3) The first request exits the network plugin, sets networReady=false, and calls StopContainer() on the sandbox. This destroys the network namespace. 4) The second request finally gets around to running nsenter but the network namespace is already destroyed. It returns an error which is logged by getIP(). ```release-note NONE ``` @yujuhong @freehan |
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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.