554418735a
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>. Makes kubectl wait exit with status 1 and print an error message, if there is no resources matching selectors **What this PR does / why we need it**: It makes the `kubectl wait` command print an error message and exit with exit code 1, if there is no resource matching users's query. This can happen when user specifies selectors. Example: ``` kubectl wait deployment -l app=something-that-does-not-exist --for condition=available --timeout=5s ``` **Which issue(s) this PR fixes**: Fixes #66456 **Special notes for your reviewer**: This is my first contribution into the project (except one line change in docs) and don't have much experience with Go. I learned a lot while working on this (about resource finders and the `Visitor` interface and it's implementations), but it is very likely that I'm doing something wrong :) I'm keen to continue contributing into the project (into the cli part for now), so I will really appreciate detailed feedback, if you have a chance to provide it (point me into a right direction and/or explain why it's not a good idea to do something in a certain way). Thanks! **Release note**: ```release-note kubectl: the wait command now prints an error message and exits with the code 1, if there is no resources matching selectors ```
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.
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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
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$ cd kubernetes
$ make quick-release
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