mirror of https://github.com/k3s-io/k3s
a2fa41b73f
This patch - set limits (0.25 cpu, 64 MB) on containers which are not limited in pod spec (these are also passed to the kubelet such that it uses them for the docker run limits) - sums up the container resource limits for cpu and memory inside a pod, - compares the sums to the offered resources - puts the sums into the Mesos TaskInfo such that Mesos does the accounting for the pod. - parses the static pod spec and adds up the resources - sets the executor resources to 0.25 cpu, 64 MB plus the static pod resources - sets the cgroups in the kubelet for system containers, resource containers and docker to the one of the executor that Mesos assigned - adds scheduler parameters --default-container-cpu-limit and --default-container-mem-limit. The containers themselves are resource limited the Docker resource limit which the kubelet applies when launching them. Fixes mesosphere/kubernetes-mesos#68 and mesosphere/kubernetes-mesos#304 |
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| Godeps | ||
| api/swagger-spec | ||
| build | ||
| cluster | ||
| cmd | ||
| contrib | ||
| docs | ||
| examples | ||
| hack | ||
| hooks | ||
| pkg | ||
| plugin | ||
| test | ||
| third_party | ||
| www | ||
| .gitignore | ||
| .travis.yml | ||
| CHANGELOG.md | ||
| CONTRIB.md | ||
| CONTRIBUTING.md | ||
| DESIGN.md | ||
| LICENSE | ||
| Makefile | ||
| README.md | ||
| Vagrantfile | ||
| logo.pdf | ||
| logo.png | ||
| logo.svg | ||
| logo_usage_guidelines.md | ||
| shippable.yml | ||
README.md
Kubernetes
Are you ...
- Interested in learning more about using Kubernetes? Please see our user-facing documentation on kubernetes.io
- Interested in hacking on the core Kubernetes code base? Keep reading!
Kubernetes is an open source system for managing containerized applications across multiple hosts, providing basic mechanisms for deployment, maintenance, and scaling of applications.
Kubernetes is:
- lean: lightweight, simple, accessible
- portable: public, private, hybrid, multi cloud
- extensible: modular, pluggable, hookable, composable
- self-healing: auto-placement, auto-restart, auto-replication
Kubernetes builds upon a decade and a half of experience at Google running production workloads at scale, combined with best-of-breed ideas and practices from the community.
Kubernetes can run anywhere!
However, initial development was done on GCE and so our instructions and scripts are built around that. If you make it work on other infrastructure please let us know and contribute instructions/code.
Kubernetes is ready for Production!
With the 1.0.1 release Kubernetes is ready to serve your production workloads.
Concepts
Kubernetes works with the following concepts:
- Cluster
- A cluster is a set of physical or virtual machines and other infrastructure resources used by Kubernetes to run your applications. Kubernetes can run anywhere! See the Getting Started Guides for instructions for a variety of services.
- Node
- A node is a physical or virtual machine running Kubernetes, onto which pods can be scheduled.
- Pod
- Pods are a colocated group of application containers with shared volumes. They're the smallest deployable units that can be created, scheduled, and managed with Kubernetes. Pods can be created individually, but it's recommended that you use a replication controller even if creating a single pod.
- Replication controller
- Replication controllers manage the lifecycle of pods. They ensure that a specified number of pods are running at any given time, by creating or killing pods as required.
- Service
- Services provide a single, stable name and address for a set of pods. They act as basic load balancers.
- Label
- Labels are used to organize and select groups of objects based on key:value pairs.
Documentation
Kubernetes documentation is organized into several categories.
- Getting started guides
- for people who want to create a Kubernetes cluster
- for people who want to port Kubernetes to a new environment
- User documentation
- for people who want to run programs on an existing Kubernetes cluster
- in the Kubernetes User Guide: Managing Applications
- the Kubectl Command Line Interface is a detailed reference on
the
kubectlCLI - User FAQ
- Cluster administrator documentation
- for people who want to create a Kubernetes cluster and administer it
- in the Kubernetes Cluster Admin Guide
- Developer and API documentation
- for people who want to write programs that access the Kubernetes API, write plugins or extensions, or modify the core Kubernete code
- in the Kubernetes Developer Guide
- see also notes on the API
- see also the API object documentation, a detailed description of all fields found in the core API objects
- Walkthroughs and examples
- hands-on introduction and example config files
- in the user guide
- in the docs/examples directory
- Contributions from the Kubernetes community
- in the docs/contrib directory
- Design documentation and design proposals
- for people who want to understand the design of Kubernetes, and feature proposals
- design docs in the Kubernetes Design Overview and the docs/design directory
- proposals in the docs/proposals directory
- Wiki/FAQ
- in the wiki
- troubleshooting information in the troubleshooting guide
Community, discussion and support
If you have questions or want to start contributing please reach out. We don't bite!
Please see the troubleshooting guide, or how to get more help.
If you are a company and are looking for a more formal engagement with Google around Kubernetes and containers at Google as a whole, please fill out this form and we'll be in touch.