a846ba191c
Rather than just changing the config once to see if dynamic kubelet config at-least-sort-of-works, this extends the test to check that the Kubelet reports the expected Node condition and the expected configuration values after several possible state transitions. Additionally, this adds a stress test that changes the configuration 100 times. It is possible for resource leaks across Kubelet restarts to eventually prevent the Kubelet from restarting. For example, this test revealed that cAdvisor's leaking journalctl processes (see: https://github.com/google/cadvisor/issues/1725) could break dynamic kubelet config. This test will help reveal these problems earlier. This commit also makes better use of const strings and fixes a few bugs that the new testing turned up. Related issue: #50217
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.