832d6f0e19
This change updates KMS v2 to not create a new DEK for every encryption. Instead, we re-use the DEK while the key ID is stable. Specifically: We no longer use a random 12 byte nonce per encryption. Instead, we use both a random 4 byte nonce and an 8 byte nonce set via an atomic counter. Since each DEK is randomly generated and never re-used, the combination of DEK and counter are always unique. Thus there can never be a nonce collision. AES GCM strongly encourages the use of a 12 byte nonce, hence the additional 4 byte random nonce. We could leave those 4 bytes set to all zeros, but there is no harm in setting them to random data (it may help in some edge cases such as live VM migration). If the plugin is not healthy, the last DEK will be used for encryption for up to three minutes (there is no difference on the behavior of reads which have always used the DEK cache). This will reduce the impact of a short plugin outage while making it easy to perform storage migration after a key ID change (i.e. simply wait ten minutes after the key ID change before starting the migration). The DEK rotation cycle is performed in sync with the KMS v2 status poll thus we always have the correct information to determine if a read is stale in regards to storage migration. Signed-off-by: Monis Khan <mok@microsoft.com> |
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Kubernetes (K8s)
Kubernetes, also known as K8s, is an open source system for managing containerized applications across multiple hosts. It provides 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 your company 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 K8s
See our documentation on kubernetes.io.
Try our interactive tutorial.
Take a free course on Scalable Microservices with Kubernetes.
To use Kubernetes code as a library in other applications, see the list of published components.
Use of the k8s.io/kubernetes module or k8s.io/kubernetes/... packages as libraries is not supported.
To start developing K8s
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.
mkdir -p $GOPATH/src/k8s.io
cd $GOPATH/src/k8s.io
git clone https://github.com/kubernetes/kubernetes
cd 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.
Community Meetings
The Calendar has the list of all the meetings in Kubernetes community in a single location.
Adopters
The User Case Studies website has real-world use cases of organizations across industries that are deploying/migrating to Kubernetes.
Governance
Kubernetes project is governed by a framework of principles, values, policies and processes to help our community and constituents towards our shared goals.
The Kubernetes Community is the launching point for learning about how we organize ourselves.
The Kubernetes Steering community repo is used by the Kubernetes Steering Committee, which oversees governance of the Kubernetes project.
Roadmap
The Kubernetes Enhancements repo provides information about Kubernetes releases, as well as feature tracking and backlogs.