| title | authors | reviewers | creation-date | last-updated | |||||||
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Glossary |
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2019-06-10 |
2019-06-10 |
A | B | C | D | H | I | K | M | O | P | S | W
Services beyond the fundamental components of Kubernetes.
- Core Add-ons: Addons that are required to deploy a Kubernetes-conformant cluster: DNS, kube-proxy, CNI.
- Additional Add-ons: Addons that are not required for a Kubernetes-conformant cluster (e.g. metrics/Heapster, Dashboard).
The process of turning a server into a Kubernetes node. This may involve assembling data to provide when creating the server that backs the Machine, as well as runtime configuration of the software running on that server.
A full Kubernetes deployment. See Management Cluster and Workload Cluster
Or Cluster API project
The Cluster API sub-project of the SIG-cluster-lifecycle. It is also used to refer to the software components, APIs, and community that produce them.
The set of Kubernetes services that form the basis of a cluster. See also https://kubernetes.io/docs/concepts/#kubernetes-control-plane There are two variants:
- Self-provisioned: A Kubernetes control plane consisting of pods or machines wholly managed by a single Cluster API deployment.
- External: A control plane offered and controlled by some system other than Cluster API (e.g., GKE, AKS, EKS, IKS).
A feature implementation offered as part of the Cluster API project, infrastructure providers can swap it out for a different one.
The ability to add more machines based on policy and well defined metrics. For example, add a machine to a cluster when CPU load average > (X) for a period of time (Y).
see Server
A source of computational resources (e.g. machines, networking, etc.). Examples for cloud include AWS, Azure, Google, etc.; for bare metal include VMware, MAAS, metal3.io, etc. When there is more than one way to obtain resources from the same infrastructure provider (e.g. EC2 vs. EKS) each way is referred to as a variant.
see Server
A resource that does not mutate. In kubernetes we often state the instance of a running pod is immutable or does not change once it is run. In order to make a change, a new pod is run. In the context of Cluster API we often refer to an running instance of a Machine is considered immutable, from a Cluster API perspective.
Or Kubernetes-compliant
A cluster that passes the Kubernetes conformance tests.
Refers to the main Kubernetes git repository or the main Kubernetes project.
Or Machine Resource
The Custom Resource for Kubernetes that represents a request to have a place to run kubelet.
See also: Server
Perform create, scale, upgrade, or destroy operations on the cluster.
The cluster where one or more Infrastructure Providers run, and where resources (e.g. Machines) are stored. Typically referred to when you are provisioning multiple clusters.
Or OS
A generically understood combination of a kernel and system-level userspace interface, such as Linux or Windows, as opposed to a particular distribution.
Existing Cluster API implementations consist of generic and infrastructure provider-specific logic. The infrastructure provider-specific logic is currently maintained in infrastructure provider repositories.
Unless otherwise specified, this refers to horizontal scaling.
The infrastructure that backs a Machine Resource, typically either a cloud instance, virtual machine, or physical host.
A cluster whose lifecycle is managed by the Management cluster.