0a22c159e5
Automatic merge from submit-queue (batch tested with PRs 62756, 63862, 61419, 64015, 64063). 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>. Handle TERM signal to reduce pod terminating time. **What this PR does / why we need it**: Register signal handler for `TERM`. For container, process is run as PID 1. PID 1 is special in linux, it ignore any signal with the default action. So process will not terminate on `SIGINT` or `SIGTERM` unless it is coded to do so. By default, docker use `TERM` signal to termiante pods, it will wait 10 seconds before sending `KILL` signal. ``` $ docker run -d --rm --name test busybox sh -c 'while true; do sleep 1; done' aa827df5d7bfffc5ca4fae2429d0b761a5a142c57ba3e1faa59b305c92f1c875 $ time docker stop test test real 0m10.408s user 0m0.048s sys 0m0.020s ``` It's better to register a exit handler for `TERM`, it reduces a lot of time in waiting pods to termiante. ``` $ docker run -d --rm --name test busybox sh -c 'trap exit TERM; while true; do sleep 1; done' e331bff454dba8e45df6065c3bd2a928e1c41303aafdf88ede38def3e4e5781f $ time docker stop test test real 0m0.690s user 0m0.048s sys 0m0.020s ``` **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 # **Special notes for your reviewer**: **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.