9543510d16
Automatic merge from submit-queue Switch to pointer to policy rule, visit and short circuit during authorization Ref #40015 * Switches policy rule helper methods to work with pointers * Switches authorization to use a short-circuiting visitor Best-case, authorization short-circuits early and avoids accumulating rules it never needs to check Worst-case (a forbidden request), it still checks all the applicable rules, but requires less allocation to do so $ go test ./plugin/pkg/auth/authorizer/rbac/... -bench=. -benchmem -run Bench on master: ``` BenchmarkAuthorize/allow_list_pods-8 300000 4373 ns/op 3840 B/op 26 allocs/op BenchmarkAuthorize/allow_update_pods/status-8 300000 5121 ns/op 3840 B/op 26 allocs/op BenchmarkAuthorize/forbid_educate_dolphins-8 300000 4706 ns/op 3840 B/op 26 allocs/op ``` with short-circuiting and policy rule pointer changes: ``` BenchmarkAuthorize/allow_list_pods-8 2000000 930 ns/op 64 B/op 2 allocs/op BenchmarkAuthorize/allow_update_pods/status-8 1000000 1656 ns/op 64 B/op 2 allocs/op BenchmarkAuthorize/forbid_educate_dolphins-8 500000 3395 ns/op 1488 B/op 25 allocs/op ``` |
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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
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$ git clone https://github.com/kubernetes/kubernetes
$ cd kubernetes
$ make quick-release
If you are less impatient, head over to the developer's documentation.
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