49250c6efc
The messages for container lifecycle events are subtly inconsistent and should be unified. First, the field format for containers is hard to parse for a human, so include the container name directly in the message for create and start, and for kill remove the container runtime prefix. Second, the pulling image event has inconsistent capitalization, fix that to be sentence without punctuation. Third, the kill container event was unnecessarily wordy and inconsistent with the create and start events. Make the following changes: * Use 'Stopping' instead of 'Killing' since kill is usually reserved for when we decide to hard stop a container * Send the event before we dispatch the prestop hook, since this is an "in-progress" style event vs a "already completed" type event * Remove the 'cri-o://' / 'docker://' prefix by printing the container name instead of id (we already do that replacement at the lower level to prevent high cardinality events) * Use 'message' instead of 'reason' as the argument name since this is a string for humans field, not a string for machines field * Remove the hash values on the container spec changed event because no human will ever be able to do anything with the hash value * Use 'Stopping container %s(, explanation)?' form without periods to follow event conventions The end result is a more pleasant message for humans: ``` 35m Normal Created Pod Created container 35m Normal Started Pod Started container 10m Normal Killing Pod Killing container cri-o://installer:Need to kill Pod 10m Normal Pulling Pod pulling image "registry.svc.ci.openshift.org/openshift/origin-v4.0-2019-02-10-172026@sha256:3da5303d4384d24691721c1cf2333584ba60e8f82c9e782f593623ce8f83ddc5" ``` becomes ``` 35m Normal Created Pod Created container installer 35m Normal Started Pod Started container installer 10m Normal Killing Pod Stopping container installer 10m Normal Pulling Pod Pulling image "registry.svc.ci.openshift.org/openshift/origin-v4.0-2019-02-10-172026@sha256:3da5303d4384d24691721c1cf2333584ba60e8f82c9e782f593623ce8f83ddc5" ``` |
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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.