Remove data/glossary (#8321)

It is unused. Glossary should be maintained in the glossary page bundle.
This commit is contained in:
Bjørn Erik Pedersen
2018-05-17 23:41:50 +02:00
committed by k8s-ci-robot
parent f4dc8028c4
commit 1a3dd1d1cf
78 changed files with 0 additions and 912 deletions
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id: _example
name: Example K8s Term
full-link: /docs/link-to-long-dedicated-docs-page
aka:
- Slang K8s Term
- Misnomer
- Formerly Known as Prince
related:
- id-of-less-fancy-k8s-term
- id-of-tangential-term
- id-of-commonly-used-with-term
tags:
- Some Tag
short-description: >
Required.
Markdown allowed (e.g. for cross-linking).
One or two lines that provide a minimum definition.
Do not repeat the term.
Prefer fragments.
End with a period.
long-description: >
Optional.
Markdown allowed.
Longer additional text to appear after (in conjunction with) short description.
Provide where the short description is not sufficient as the intro paragraph to a topic.
Write complete but concise sentences.
**See /_includes/templates/glossary/README.md for the official style guide.**
-9
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id: annotation
name: Annotation
full-link: /docs/concepts/overview/working-with-objects/annotations
tags:
- fundamental
short-description: >
A key-value pair that is used to attach arbitrary non-identifying metadata to objects.
long-description: >
The metadata in an annotation can be small or large, structured or unstructured, and can include characters not permitted by labels. Clients such as tools and libraries can retrieve this metadata.
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id: application-architect
name: Application Architect
related:
- application-developer
tags:
- user-type
short-description: >
A person responsible for the high-level design of an application.
long-description: >
An architect ensures that an app's implementation allows it to interact with its surrounding components in a scalable, maintainable way.
Surrounding components include databases, logging infrastructure, and other microservices.
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id: application-developer
name: Application Developer
related:
- application-architect
tags:
- user-type
short-description: >
A person who writes an application that runs in a Kubernetes cluster.
long-description: >
An application developer focuses on one part of an application.
The scale of their focus may vary significantly in size.
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id: approver
name: Approver
tags:
- community
short-description: >
A person who can review and approve Kubernetes code contributions.
long-description: >
While code review is focused on code quality and correctness, approval is focused on the holistic acceptance of a contribution.
Holistic acceptance includes backwards/forwards compatibility, adhering to API and flag conventions, subtle performance and correctness issues, interactions with other parts of the system, and others.
Approver status is scoped to a part of the codebase.
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id: certificate
name: Certificate
full-link: /docs/tasks/tls/managing-tls-in-a-cluster/
tags:
- security
short-description: >
A cryptographically secure file used to validate access to the Kubernetes cluster.
long-description: >
Certificates enable applications within a Kubernetes
cluster to access the Kubernetes API securely. Certificates validate that
clients are allowed to access the API.
-9
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id: cla
name: CLA (Contributor License Agreement)
full-link: https://github.com/kubernetes/community/blob/master/CLA.md
tags:
- community
short-description: >
Terms under which a {% glossary_tooltip text="contributor" term_id="contributor" %} grants a license to an open source project for their contributions.
long-description: >
CLAs help resolve legal disputes involving contributed material and intellectual property (IP).
@@ -1,13 +0,0 @@
id: cloud-controller-manager
name: Cloud Controller Manager
full-link: https://kubernetes.io/docs/tasks/administer-cluster/running-cloud-controller/
tags:
- core-object
- architecture
- operation
short-description: >
Cloud Controller Manager is an alpha feature in 1.8. In upcoming releases it will be the preferred way to integrate Kubernetes with any cloud.
long-description: >
Kubernetes v1.6 contains a new binary called cloud-controller-manager. cloud-controller-manager is a daemon that embeds cloud-specific control loops.
These cloud-specific control loops were originally in the kube-controller-manager. Since cloud providers develop and release at a different pace compared to the Kubernetes
project, abstracting the provider-specific code to the cloud-controller-manager binary allows cloud vendors to evolve independently from the core Kubernetes code.
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id: cloud-provider
name: Cloud Provider
full-link: /docs/concepts/cluster-administration/cloud-providers
tags:
- community
short-description: >
Cloud provider is a company that offers cloud computing platform that can run Kubernetes clusters.
long-description: >
Cloud providers or sometime called Cloud Service Provider (CSPs) provides cloud computing platforms. They may offer services such as Infrastructure as a Service (IaaS) or Platform as a Service (PaaS). Cloud providers host the Kubernetes cluster and also provide services that interact with the cluster, such as Load Balancers, Storage Classes etc.
-11
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id: cluster-architect
name: Cluster Architect
related:
- cluster
- cluster-operator
tags:
- user-type
short-description: >
A person who designs infrastructure that involves one or more Kubernetes clusters.
long-description: >
Cluster architects are concerned with best practices for distributed systems, for example: high availability and security.
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@@ -1,15 +0,0 @@
id: cluster-operator
name: Cluster Operator
aka:
- Cluster Administrator
related:
- cluster
- cluster-architect
tags:
- user-type
short-description: >
A person who configures, controls, and monitors clusters.
long-description: |
Their primary responsibility is keeping a cluster up and running, which may involve periodic maintenance activities or upgrades.<br>
**NOTE:** Cluster operators are different from the [Operator pattern](https://coreos.com/operators) that extends the Kubernetes API.
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@@ -1,9 +0,0 @@
id: cluster
name: Cluster
tags:
- fundamental
- operation
short-description: >
A set of machines, called nodes, that run containerized applications managed by Kubernetes.
long-description: >
A cluster has several worker nodes and at least one master node.
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@@ -1,12 +0,0 @@
id: code-contributor
name: Code Contributor
full-link: /docs/imported/community/devel/
aka:
- Community Developer
tags:
- community
- user-type
short-description: >
A person who develops and contributes code to the Kubernetes open source codebase.
long-description: >
They are also an active {% glossary_tooltip text="community member" term_id="member" %} who participates in one or more {% glossary_tooltip text="Special Interest Groups (SIGs)" term_id="sig" %}.
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@@ -1,13 +0,0 @@
id: configmap
name: ConfigMap
full-link: /docs/tasks/configure-pod-container/configure-pod-configmap/
related:
- pod
- secret
tags:
- core-object
short-description: >
An API object used to store non-confidential data in key-value pairs. Can be consumed as environment variables, command-line arguments, or config files in a {% glossary_tooltip text="volume" term_id="volume" %}.
long-description: >
Allows you to decouple environment-specific configuration from your {% glossary_tooltip text="container images" term_id="container" %}, so that your applications are easily portable.
When storing confidential data use a [Secret](https://kubernetes.io/docs/concepts/configuration/secret/).
@@ -1,9 +0,0 @@
id: container-env-variables
name: Container Environment Variables
full-link: /docs/concepts/containers/container-environment-variables.md
tags:
- fundamental
short-description: >
Container environment variables are name/value pairs that provide useful information into containers running in a Pod.
long-description: >
Container environment variables provide information that is required by the running containerized applications along with information about important resources to the [Containers] {% glossary_tooltip text="Containers" term_id="container" %}. For example, file system, information about the container itself and other cluster resources such as service endpoints, etc.
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@@ -1,10 +0,0 @@
id: container
name: Container
full-link: /docs/concepts/overview/what-is-kubernetes/#why-containers
tags:
- fundamental
- workload
short-description: >
A lightweight and portable executable image that contains software and all of its dependencies.
long-description: >
Containers decouple applications from underlying host infrastructure to make deployment easier in different cloud or OS environments, and for easier scaling.
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@@ -1,8 +0,0 @@
id: contributor
name: Contributor
tags:
- community
short-description: >
Someone who donates code, documentation, or their time to help the Kubernetes project or community.
long-description: >
Contributions include pull requests (PRs), issues, feedback, {% glossary_tooltip text="special interest groups (SIG)" term_id="sig" %} participation, or organizing community events.
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id: controller
name: Controller
full-link: /docs/admin/kube-controller-manager/
related:
- controller-manager
tags:
- architecture
- fundamental
short-description: >
A control loop that watches the shared state of the cluster through the {% glossary_tooltip text="apiserver" term_id="kube-apiserver" %} and makes changes attempting to move the current state towards the desired state.
long-description: >
Examples of controllers that ship with Kubernetes today are the replication controller, endpoints controller, namespace controller, and serviceaccounts controller.
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@@ -1,10 +0,0 @@
id: cronjob
name: CronJob
full-link: /docs/concepts/workloads/controllers/cron-jobs/
tags:
- core-object
- workload
short-description: >
Manages a [Job](/docs/concepts/workloads/controllers/jobs-run-to-completion/) that runs on a periodic schedule.
long-description: >
Similar to a line in a *crontab* file, a Cronjob object specifies a schedule using the [Cron](https://en.wikipedia.org/wiki/Cron) format.
@@ -1,14 +0,0 @@
id: CustomResourceDefinition
name: CustomResourceDefinition
aka:
- CRD
- Formerly Known as ThirdPartyResources (TPR)
tags:
- fundamental
- operation
- extension
full-link: docs/tasks/access-kubernetes-api/extend-api-custom-resource-definitions/
short-description: >
Custom code that defines a resource to add to your Kubernetes API server without building a complete custom server.
long-description: >
Custom Resource Definitions let you extend the Kubernetes API for your environment if the publicly supported API resources can't meet your needs.
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id: daemonset
name: DaemonSet
full-link: /docs/concepts/workloads/controllers/daemonset
tags:
- fundamental
- core-object
- workload
short-description: >
Ensures a copy of a {% glossary_tooltip text="Pod" term_id="pod" %} is running across a set of nodes in a {% glossary_tooltip text="cluster" term_id="cluster" %}.
long-description: >
Used to deploy system daemons such as log collectors and monitoring agents that typically must run on every {% glossary_tooltip term_id="node" %}.
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@@ -1,11 +0,0 @@
id: deployment
name: Deployment
full-link: /docs/concepts/workloads/controllers/deployment/
tags:
- fundamental
- core-object
- workload
short-description: >
An API object that manages a replicated application.
long-description: >
Each replica is represented by a {% glossary_tooltip term_id="pod" %}, and the Pods are distributed among the nodes of a cluster.
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id: developer
name: Developer (disambiguation)
aka:
- Kubernetes Developer
tags:
- community
- user-type
short-description: >
May refer to&#58; {% glossary_tooltip text="Application Developer" term_id="application-developer" %}, {% glossary_tooltip text="Code Contributor" term_id="code-contributor" %}, or {% glossary_tooltip text="Platform Developer" term_id="platform-developer" %}.
long-description: >
This overloaded term may have different meanings depending on the context
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id: docker
name: docker
full-link: /docs/reference/kubectl/docker-cli-to-kubectl/
tags:
- fundamental
short-description: >
Docker is a software technology providing operating-system-level virtualization also known as containers.
long-description: >
Docker uses the resource isolation features of the Linux kernel such as cgroups and kernel namespaces, and a union-capable file system such as OverlayFS and others to allow independent "containers" to run within a single Linux instance, avoiding the overhead of starting and maintaining virtual machines (VMs).
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id: downstream
name: Downstream (disambiguation)
related:
- upstream
tags:
- community
short-description: >
May refer to: code in the Kubernetes ecosystem that depends upon the core Kubernetes codebase or a forked repo.
long-description: |
* In the **Kubernetes Community**: Conversations often use *downstream* to mean the ecosystem, code, or third-party tools that rely on the core Kubernetes codebase. For example, a new feature in Kubernetes may be adopted by applications *downstream* to improve their functionality.
* In **GitHub** or **git**: The convention is to refer to a forked repo as *downstream*, whereas the source repo is considered *upstream*.
@@ -1,11 +0,0 @@
id: dynamicvolumeprovisioning
name: Dynamic Volume Provisioning
full-link: /docs/concepts/storage/dynamic-provisioning
tags:
- core-object
- storage
short-description: >
Allows users to request automatic creation of storage {% glossary_tooltip text="Volumes" term_id="volume" %}.
long-description: >
Dynamic provisioning eliminates the need for cluster administrators to pre-provision storage. Instead, it automatically provisions storage by user request.
Dynamic volume provisioning is based on an API object, {% glossary_tooltip text="StorageClass" term_id="storage-class" %}, referring to a {% glossary_tooltip text="Volume Plugin" term_id="volume-plugin" %} that provisions a {% glossary_tooltip text="Volume" term_id="volume" %} and the set of parameters to pass to the Volume Plugin.
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id: etcd
name: etcd
full-link: /docs/tasks/administer-cluster/configure-upgrade-etcd/
tags:
- architecture
- storage
short-description: >
Consistent and highly-available key value store used as Kubernetes' backing store for all cluster data.
long-description: >
Always have a backup plan for etcd's data for your Kubernetes cluster.
For in-depth information on etcd, see [etcd documentation](https://github.com/coreos/etcd/blob/master/Documentation/docs.md).
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id: helm-chart
name: Helm Chart
full-link: https://github.com/kubernetes/helm/blob/master/docs/charts.md
tags:
- tool
short-description: >
A package of pre-configured Kubernetes resources that can be managed with the Helm tool.
long-description: |
Charts provide a reproducible way of creating and sharing Kubernetes applications.
A single chart can be used to deploy something simple, like a memcached Pod, or something complex, like a full web app stack with HTTP servers, databases, caches, and so on.
@@ -1,17 +0,0 @@
id: horizontal-pod-autoscaler
name: Horizontal Pod Autoscaler
full-link: /docs/tasks/run-application/horizontal-pod-autoscale/
aka:
- HPA
related:
- pod
- replication-controller
- deployment
tags:
- operation
short-description: >
An API resource that automatically scales the number of pod replicas based on targeted CPU
utilization or custom metric targets.
long-description: >
HPA is typically used with {% glossary_tooltip text="Replication Controllers" term_id="replication-controller" %}, {% glossary_tooltip text="Deployments" term_id="deployment" %}, or Replica Sets.
It cannot be applied to objects that cannot be scaled, for example {% glossary_tooltip text="DaemonSets" term_id="daemonset" %}.
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id: image
name: Image
tags:
- fundamental
short-description: >
Stored instance of a container that holds a set of software needed to run an application.
long-description: >
A way of packaging software that allows it to be stored in a container registry, pulled to a local system, and run as an application. Meta data is included in the image that can indicate what executable to run, who built it, and other information.
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id: ingress
name: Ingress
full-link: /docs/concepts/services-networking/ingress/
aka:
- Ingress controller
tags:
- networking
- architecture
- extension
short-description: >
An API object that manages external access to the services in a cluster, typically HTTP.
long-description: >
Ingress can provide load balancing, SSL termination and name-based virtual hosting.
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id: init-container
name: Init Container
tags:
- fundamental
short-description: >
One or more initialization containers that must run to completion before any app containers run.
long-description: >
Initialization (init) containers are like regular app containers, with one difference: init containers must run to completion before any app containers can start. Init containers run in series: each init container must run to completion before the next init container begins.
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id: istio
name: Istio
full-link: https://istio.io/docs/concepts/what-is-istio/overview.html
tags:
- networking
- architecture
- extension
short-description: >
An open platform (not Kubernetes-specific) that provides a uniform way to integrate microservices, manage traffic flow, enforce policies, and aggregate telemetry data.
long-description: >
Adding Istio does not require changing application code.
It is a layer of infrastructure between a service and the network, which when combined with service deployments, is commonly referred to as a service mesh.
Istio's control plane abstracts away the underlying cluster management platform, which may be Kubernetes, Mesosphere, etc.
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id: job
name: Job
full-link: /docs/concepts/workloads/controllers/jobs-run-to-completion
tags:
- fundamental
- core-object
- workload
short-description: >
A finite or batch task that runs to completion.
long-description: >
Creates one or more {% glossary_tooltip term_id="pod" %} objects and ensures that a specified number of them successfully terminate. As Pods successfully complete, the Job tracks the successful completions.
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id: kops
name: Kops
full-link: /docs/getting-started-guides/kops/
tags:
- tool
- operation
short-description: >
A CLI tool that helps you create, destroy, upgrade and maintain production-grade, highly available, Kubernetes clusters. *NOTE&#58; Officially supports AWS only, with GCE and VMware vSphere in alpha*.
long-description: |
`kops` provisions your cluster with&#58;
* Fully automated installation
* DNS-based cluster identification
* Self-healing&#58; everything runs in Auto-Scaling Groups
* Limited OS support (Debian preferred, Ubuntu 16.04 supported, early support for CentOS & RHEL)
* High availability (HA) support
* The ability to directly provision, or generate terraform manifests
You can also build your own cluster using {% glossary_tooltip term_id="kubeadm" %} as a building block. `kops` builds on the kubeadm work.
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@@ -1,12 +0,0 @@
id: kube-apiserver
name: kube-apiserver
full-link: /docs/reference/generated/kube-apiserver/
aka:
- apiserver
tags:
- architecture
- fundamental
short-description: >
Component on the master that exposes the Kubernetes API. It is the front-end for the Kubernetes control plane.
long-description: >
It is designed to scale horizontally -- that is, it scales by deploying more instances. See [Building High-Availability Clusters](/docs/admin/high-availability/).
@@ -1,14 +0,0 @@
id: kube-controller-manager
name: kube-controller-manager
full-link: /docs/reference/generated/kube-controller-manager/
aka:
- controller-manager
related:
- controller
tags:
- architecture
- fundamental
short-description: >
Component on the master that runs {% glossary_tooltip text="controllers" term_id="controller" %}.
long-description: >
Logically, each {% glossary_tooltip text="controller" term_id="controller" %} is a separate process, but to reduce complexity, they are all compiled into a single binary and run in a single process.
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@@ -1,10 +0,0 @@
id: kube proxy
name: kube-proxy
full-link: /docs/reference/generated/kube-proxy
tags:
- fundamental
- core-object
short-description: >
`kube-proxy` is a network proxy that runs on each node in the cluster.
long-description: >
`kube-proxy` is responsible for request forwarding. `kube-proxy` allows TCP and UDP stream forwarding or round robin TCP and UDP forwarding across a set of backend functions.
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@@ -1,13 +0,0 @@
id: kube-scheduler
name: kube-scheduler
full-link: /docs/reference/generated/kube-scheduler/
aka:
- scheduler
tags:
- architecture
short-description: >
Component on the master that watches newly created pods that have no node assigned, and selects a node for them to run on.
long-description: >
Factors taken into account for scheduling decisions include individual and collective resource requirements,
hardware/software/policy constraints, affinity and anti-affinity specifications, data locality, inter-workload interference
and deadlines.
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id: kubeadm
name: Kubeadm
full-link: /docs/admin/kubeadm/
tags:
- tool
- operation
short-description: >
A tool for quickly installing Kubernetes and setting up a secure cluster.
long-description: >
You can use kubeadm to install both the control plane and the worker node components.
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@@ -1,10 +0,0 @@
id: kubectl
name: Kubectl
full-link: /docs/user-guide/kubectl-overview/
tags:
- tool
- fundamental
short-description: >
A command line tool for communicating with a {% glossary_tooltip text="Kubernetes API" term_id="kubernetes-api" %} server.
long-description: >
You can use kubectl to create, inspect, update, and delete Kubernetes objects.
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@@ -1,10 +0,0 @@
id: kubelet
name: Kubelet
full-link: /docs/reference/generated/kubelet
tags:
- fundamental
- core-object
short-description: >
An agent that runs on each node in the cluster. It makes sure that containers are running in a pod.
long-description: >
The kubelet takes a set of PodSpecs that are provided through various mechanisms and ensures that the containers described in those PodSpecs are running and healthy. The kubelet doesnt manage containers which were not created by Kubernetes.
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@@ -1,13 +0,0 @@
id: kubernetes-api
name: Kubernetes API
full-link: /docs/concepts/overview/kubernetes-api/
tags:
- fundamental
- architecture
short-description: >
The application that serves Kubernetes functionality through a RESTful interface and stores the state of the cluster.
long-description: >
Kubernetes resources and "records of intent" are all stored as API objects, and modified via RESTful calls to the API.
The API allows configuration to be managed in a declarative way.
Users can interact with the Kubernetes API directly, or via tools like `kubectl`.
The core Kubernetes API is flexible and can also be extended to support custom resources.
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@@ -1,10 +0,0 @@
id: label
name: Label
full-link: /docs/concepts/overview/working-with-objects/labels
tags:
- fundamental
short-description: >
Tags objects with identifying attributes that are meaningful and relevant to users.
long-description: >
Labels are key/value pairs that are attached to objects such as {% glossary_tooltip text="Pods" term_id="pod" %}.
They are used to organize and to select subsets of objects.
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@@ -1,8 +0,0 @@
id: maintainer
name: Maintainer
tags:
- community
short-description: >
A highly experienced {% glossary_tooltip text="contributor" term_id="contributor" %}, active in multiple areas of Kubernetes, who has cross-area ownership and write access to a project's GitHub repository.
long-description: >
Maintainers work holistically across the project to maintain its health and success and have made substantial contributions, both through code development and broader organizational efforts.
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id: managed-service
name: Managed Service
tags:
- extension
short-description: >
A software offering maintained by a third-party provider.
long-description: >
Some examples of Managed Services are AWS EC2, Azure SQL Database, and GCP Pub/Sub, but they can be any software offering that can be used by an application.
[Service Catalog](/docs/concepts/service-catalog/) provides a way to list, provision, and bind with Managed Services offered by {% glossary_tooltip text="Service Brokers" term_id="service-broker" %}.
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@@ -1,10 +0,0 @@
id: member
name: Member
tags:
- community
short-description: >
A continuously active {% glossary_tooltip text="contributor" term_id="contributor" %} in the K8s community.
long-description: >
Members can have issues and PRs assigned to them and participate in {% glossary_tooltip text="special interest groups (SIGs)" term_id="sig" %} through GitHub teams.
Pre-submit tests are automatically run for members' PRs.
A member is expected to remain an active contributor to the community.
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@@ -1,10 +0,0 @@
id: minikube
name: Minikube
full-link: /docs/getting-started-guides/minikube/
tags:
- fundamental
- tool
short-description: >
A tool for running Kubernetes locally.
long-description: >
Minikube runs a single-node cluster inside a VM on your computer.
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@@ -1,10 +0,0 @@
id: name
name: Name
full-link: /docs/concepts/overview/working-with-objects/names
tags:
- fundamental
short-description: >
A client-provided string that refers to an object in a resource URL, such as `/api/v1/pods/some-name`.
long-description: >
Only one object of a given kind can have a given name at a time.
However, if you delete the object, you can make a new object with the same name.
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@@ -1,10 +0,0 @@
id: namespace
name: Namespace
full-link: /docs/concepts/overview/working-with-objects/namespaces
tags:
- fundamental
short-description: >
An abstraction used by Kubernetes to support multiple virtual clusters on the same physical {% glossary_tooltip text="cluster" term_id="cluster" %}.
long-description: >
Namespaces are used to organize objects in a cluster and provide a way to divide cluster resources.
Names of resources need to be unique within a namespace, but not across namespaces.
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id: network-policy
name: Network Policy
full-link: /docs/concepts/services-networking/network-policies/
aka:
- NetworkPolicy
tags:
- networking
- architecture
- extension
short-description: >
A specification of how groups of Pods are allowed to communicate with each other and with other network endpoints.
long-description: >
Network Policies help you declaratively configure which Pods are allowed to connect to each other, which namespaces are allowed to communicate, and more specifically which port numbers to enforce each policy on. `NetworkPolicy` resources use labels to select Pods and define rules which specify what traffic is allowed to the selected Pods. Network Policies are implemented by a supported network plugin provided by a network provider. Be aware that creating a network resource without a controller to implement it will have no effect.
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id: node
name: Node
full-link: /docs/concepts/architecture/nodes/
aka:
- Minion
related:
- deployment
tags:
- fundamental
short-description: >
A node is a worker machine in Kubernetes.
long-description: >
A worker machine may be a VM or physical machine, depending on the cluster. It has the {% glossary_tooltip text="Services" term_id="service" %} necessary to run {% glossary_tooltip text="Pods" term_id="pod" %} and is managed by the master components. The {% glossary_tooltip text="Services" term_id="service" %} on a node include Docker, kubelet and kube-proxy.
@@ -1,15 +0,0 @@
id: persistent-volume-claim
name: Persistent Volume Claim
full-link: /docs/concepts/storage/persistent-volumes/
related:
- persistent-volume
- statefulset
- deployment
- pod
tags:
- core-object
- storage
short-description: >
Claims storage resources defined in a PersistentVolume so that it can be mounted as a volume in a container.
long-description: |
Specifies the amount of storage, how the storage will be accessed (read-only, read-write and/or exclusive) and how it is reclaimed (retained, recycled or deleted). Details of the storage itself are in the PersistentVolume specification.
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@@ -1,17 +0,0 @@
id: persistent-volume
name: Persistent Volume
full-link: /docs/concepts/storage/persistent-volumes/
related:
- statefulset
- deployment
- persistent-volume-claim
- pod
tags:
- core-object
- storage
short-description: >
An API object that represents a piece of storage in the cluster. Available as a general, pluggable resource that persists beyond the lifecycle of any individual {% glossary_tooltip text="Pod" term_id="pod" %}.
long-description: |
PersistentVolumes (PVs) provide an API that abstracts details of how storage is provided from how it is consumed.
PVs are used directly in scenarios where storage can be created ahead of time (static provisioning).
For scenarios that require on-demand storage (dynamic provisioning), PersistentVolumeClaims (PVCs) are used instead.
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@@ -1,11 +0,0 @@
id: platform-developer
name: Platform Developer
aka:
- Kubernetes Developer
- Extension Developer
tags:
- user-type
short-description: >
A person who customizes the Kubernetes platform to fit the needs of their project.
long-description: >
A platform developer may, for example, use [Custom Resources](/docs/concepts/api-extension/custom-resources/) or [Extend the Kubernetes API with the aggregation layer](/docs/concepts/api-extension/apiserver-aggregation/) to add functionality to their instance of Kubernetes, specifically for their application. Some Platform Developers are also {% glossary_tooltip text="contributors" term_id="contributor" %} and develop extensions which are contributed to the Kubernetes community. Others develop closed-source commercial or site-specific extensions.
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@@ -1,19 +0,0 @@
id: pod-security-policy
name: Pod Security Policy
full-link: /docs/concepts/policy/pod-security-policy/
related:
- pod
- container
- sidecar
- deployment
- statefulset
- security
tags:
- core-object
- fundamental
short-description: >
Enables fine-grained authorization of {% glossary_tooltip term_id="pod" %} creation and updates.
long-description: >
A cluster-level resource that controls security sensitive aspects of the Pod specification.
The `PodSecurityPolicy` objects define a set of conditions that a Pod must run with in order to be accepted into the system, as well as defaults for the related fields.
Pod Security Policy control is implemented as an optional admission controller.
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@@ -1,17 +0,0 @@
id: pod
name: Pod
full-link: /docs/concepts/workloads/pods/pod-overview/
related:
- container
- sidecar
- deployment
- statefulset
tags:
- core-object
- fundamental
short-description: >
The smallest and simplest Kubernetes object. A Pod represents a set of running {% glossary_tooltip text="containers" term_id="container" %} on your cluster.
long-description: >
A Pod is typically set up to run a single primary container.
It can also run optional sidecar containers that add supplementary features like logging.
Pods are commonly managed by a {% glossary_tooltip term_id="deployment" %}.
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@@ -1,12 +0,0 @@
id: podpreset
name: PodPreset
tags:
- operation
short-description: >
An API object that injects information such as secrets, volume mounts,
and environment variables into pods at creation time.
long-description: >
This object chooses the pods to inject information into using
standard selectors. This allows the podspec definitions to be
nonspecific, decoupling the podspec from environment specific
configuration.
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@@ -1,10 +0,0 @@
id: rbac
name: RBAC (Role-Based Access Control)
full-link: /docs/admin/authorization/rbac/
tags:
- security
- fundamental
short-description: >
Manages authorization decisions, allowing admins to dynamically configure access policies through the {% glossary_tooltip text="Kubernetes API" term_id="kubernetes-api" %}.
long-description: >
RBAC utilizes *roles*, which contain permission rules, and *role bindings*, which grant the permissions defined in a role to a set of users.
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@@ -1,14 +0,0 @@
id: replica-set
name: ReplicaSet
full-link: https://kubernetes.io/docs/concepts/workloads/controllers/replicaset/
related:
- replication-controller
tags:
- fundamental
- core-object
- workload
short-description: >
ReplicaSet is the next-generation Replication Controller.
long-description: >
ReplicaSet, like ReplicationController, ensures that a specified number of pods replicas are running at one time.
ReplicaSet supports the new set-based selector requirements as described in the labels user guide, whereas a Replication Controller only supports equality-based selector requirements.
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@@ -1,10 +0,0 @@
id: replication-controller
name: Replication Controller
tags:
- workload
- core-object
short-description: >
Kubernetes service that ensures a specific number of instances of a pod are always running.
long-description: >
Will automatically add or remove running instances of a pod, based on a set value for that pod. Allows the pod to return to the defined number of instances if pods are deleted or if too many are started by mistake.
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@@ -1,11 +0,0 @@
id: resource-quota
name: Resource Quotas
full-link: /docs/concepts/policy/resource-quotas/
tags:
- fundamental
- operation
- architecture
short-description: >
Provides constraints that limit aggregate resource consumption per {% glossary_tooltip term_id="namespace" %}.
long-description: >
Limits the quantity of objects that can be created in a namespace by type, as well as the total amount of compute resources that may be consumed by resources in that project.
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@@ -1,8 +0,0 @@
id: reviewer
name: Reviewer
tags:
- community
short-description: >
A person who reviews code for quality and correctness on some part of the project.
long-description: >
Reviewers are knowledgeable about both the codebase and software engineering principles. Reviewer status is scoped to a part of the codebase.
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@@ -1,15 +0,0 @@
id: secret
name: Secret
full-link: /docs/concepts/configuration/secret/
related:
- pods
- volume
tags:
- core-object
- security
short-description: >
Stores sensitive information, such as passwords, OAuth tokens, and ssh keys.
long-description: >
Allows for more control over how sensitive information is used and reduces the risk of accidental exposure, including [encryption](https://kubernetes.io/docs/tasks/administer-cluster/encrypt-data/#ensure-all-secrets-are-encrypted) at rest.
A {% glossary_tooltip text="Pod" term_id="pod" %} references the secret as a file in a volume mount or by the kubelet pulling images for a pod.
Secrets are great for confidential data and [ConfigMaps](https://kubernetes.io/docs/tasks/configure-pod-container/configure-pod-configmap/) for non-confidential data.
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@@ -1,9 +0,0 @@
id: security-context
name: Security Context
full-link: /docs/tasks/configure-pod-container/security-context/
tags:
- security
short-description: >
The securityContext field defines privilege and access control settings for a Pod or Container, including the runtime UID and GID.
long-description: >
The securityContext field in a {% glossary_tooltip term_id="pod" %} (applying to all containers) or container is used to set the user (runAsUser) and group (fsGroup), capabilities, privilege settings, and security policies (SELinux/AppArmor/Seccomp) that container processes use.
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@@ -1,13 +0,0 @@
id: selector
name: Selector
full-link: /docs/concepts/overview/working-with-objects/labels/
related:
- label
tags:
- fundamental
short-description: >
Allows users to filter a list of resources based on labels.
long-description: >
Selectors are applied when querying lists of resources to filter
them by {% glossary_tooltip text="Labels" term_id="label"
%}.
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@@ -1,10 +0,0 @@
id: service-account
name: Service Account
full-link: /docs/tasks/configure-pod-container/configure-service-account/
tags:
- fundamental
- core-object
short-description: >
Provides an identity for processes that run in a {% glossary_tooltip text="Pod" term_id="pod" %}.
long-description: >
When processes inside Pods access the cluster, they are authenticated by the API server as a particular service account, for example, `default`. When you create a Pod, if you do not specify a service account, it is automatically assigned the default service account in the same namespace {% glossary_tooltip text="Namespace" term_id="namespace" %}.
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@@ -1,9 +0,0 @@
id: service-broker
name: Service Broker
tags:
- extension
short-description: >
An endpoint for a set of {% glossary_tooltip text="Managed Services" term_id="managed-service" %} offered and maintained by a third-party.
long-description: >
{% glossary_tooltip text="Service Brokers" term_id="service-broker" %} implement the [Open Service Broker API spec](https://github.com/openservicebrokerapi/servicebroker/blob/v2.13/spec.md) and provide a standard interface for applications to use their Managed Services.
[Service Catalog](/docs/concepts/service-catalog/) provides a way to list, provision, and bind with Managed Services offered by Service Brokers.
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@@ -1,8 +0,0 @@
id: service-catalog
name: Service Catalog
tags:
- extension
short-description: >
An extension API that enables applications running in Kubernetes clusters to easily use external managed software offerings, such as a datastore service offered by a cloud provider.
long-description: >
It provides a way to list, provision, and bind with external {% glossary_tooltip text="Managed Services" term_id="managed-service" %} from {% glossary_tooltip text="Service Brokers" term_id="service-broker" %} without needing detailed knowledge about how those services are created or managed.
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@@ -1,10 +0,0 @@
id: service
name: Service
full-link: /docs/concepts/services-networking/service/
tags:
- fundamental
- core-object
short-description: >
An API object that describes how to access applications, such as a set of {% glossary_tooltip text="Pods" term_id="pod" %}, and can describe ports and load-balancers.
long-description: >
The access point can be internal or external to the cluster.
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@@ -1,12 +0,0 @@
id: sig
name: SIG (special interest group)
full-link: https://github.com/kubernetes/community/blob/master/sig-list.md#master-sig-list
tags:
- community
short-description: >
{% glossary_tooltip text="Community members" term_id="member" %} who collectively manage an ongoing piece or aspect of the larger Kubernetes open source project.
long-description: |
Members within a SIG have a shared interest in advancing a specific area, such as architecture, API machinery, or documentation.
SIGs must follow the [SIG Governance](https://github.com/kubernetes/community/blob/master/sig-governance.md) guidelines but can have their own contribution policy and channels of communication.
For more information, see the [kubernetes/community](https://github.com/kubernetes/community) repo and the current list of [SIGs and Working Groups](https://github.com/kubernetes/community/blob/master/sig-list.md).
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@@ -1,17 +0,0 @@
id: statefulset
name: StatefulSet
full-link: /docs/concepts/workloads/controllers/statefulset/
related:
- deployment
- pod
tags:
- fundamental
- core-object
- workload
- storage
short-description: >
Manages the deployment and scaling of a set of {% glossary_tooltip text="Pods" term_id="pod" %}, *and provides guarantees about the ordering and uniqueness* of these Pods.
long-description: |
Like a {% glossary_tooltip term_id="deployment" %}, a StatefulSet manages Pods that are based on an identical container spec. Unlike a Deployment, a StatefulSet maintains a sticky identity for each of their Pods. These pods are created from the same spec, but are not interchangeable&#58; each has a persistent identifier that it maintains across any rescheduling.
A StatefulSet operates under the same pattern as any other Controller. You define your desired state in a StatefulSet *object*, and the StatefulSet *controller* makes any necessary updates to get there from the current state.
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@@ -1,11 +0,0 @@
id: storageclass
name: Storage Class
full-link: /docs/concepts/storage/storage-classes
tags:
- core-object
- storage
short-description: >
A StorageClass provides a way for administrators to describe different available storage types.
long-description: >
StorageClasses can map to quality-of-service levels, backup policies, or to arbitrary policies determined by cluster administrators.
Each StorageClass contains the fields `provisioner`, `parameters`, and `reclaimPolicy`, which are used when a {% glossary_tooltip text="Persistent Volume" term_id="persistent-volume" %} belonging to the class needs to be dynamically provisioned. Users can request a particular class using the name of a StorageClass object.
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@@ -1,10 +0,0 @@
id: uid
name: UID
full-link: /docs/concepts/overview/working-with-objects/names
tags:
- fundamental
short-description: >
A Kubernetes systems-generated string to uniquely identify objects.
long-description: >
Every object created over the whole lifetime of a Kubernetes cluster has a distinct UID.
It is intended to distinguish between historical occurrences of similar entities.
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@@ -1,11 +0,0 @@
id: upstream
name: Upstream (disambiguation)
related:
- downstream
tags:
- community
short-description: >
May refer to: core Kubernetes or the source repo from which a repo was forked.
long-description: |
* In the **Kubernetes Community**: Conversations often use *upstream* to mean the core Kubernetes codebase, which the general ecosystem, other code, or third-party tools relies upon. For example, [community members](#term-member) may suggest that a feature is moved upstream so that it is in the core codebase instead of in a plugin or third-party tool.
* In **GitHub** or **git**: The convention is to refer to a source repo as *upstream*, whereas the forked repo is considered *downstream*.
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@@ -1,11 +0,0 @@
id: volumeplugin
name: Volume Plugin
tags:
- core-object
- storage
short-description: >
A Volume Plugin enables integration of storage within a {% glossary_tooltip text="Pod" term_id="pod" %}.
long-description: >
A Volume Plugin lets you attach and mount storage volumes for use by a {% glossary_tooltip text="Pod" term_id="pod" %}.
Volume plugins can be _in tree_ or _out of tree_. _In tree_ plugins are part of the Kubernetes code repository and follow its release cycle. _Out of tree_ plugins are developed independently.
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@@ -1,17 +0,0 @@
id: volume
name: Volume
full-link: /docs/concepts/storage/volumes/
related:
- pod
- container
- secret
tags:
- core-object
- fundamental
short-description: >
A directory containing data, accessible to the containers in a {% glossary_tooltip text="pod" term_id="pod" %}.
long-description: >
A Kubernetes volume lives as long as the {% glossary_tooltip text="pod" term_id="pod" %} that encloses it.
Consequently, a volume outlives any {% glossary_tooltip text="containers" term_id="container" %} that run within the
{% glossary_tooltip text="pod" term_id="pod" %}, and data is preserved across
{% glossary_tooltip text="container" term_id="container" %} restarts.
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@@ -1,11 +0,0 @@
id: wg
name: WG (working group)
full-link: https://github.com/kubernetes/community/blob/master/sig-list.md#master-working-group-list
tags:
- community
short-description: >
Facilitates the discussion and/or implementation of a short-lived, narrow, or decoupled project for a committee, {% glossary_tooltip text="SIG" term_id="sig" %}, or cross-SIG effort.
long-description: |
Working groups are a way of organizing people to accomplish a discrete task, and are relatively easy to create and deprecate when inactive.
For more information, see the [kubernetes/community](https://github.com/kubernetes/community) repo and the current list of [SIGs and working groups](https://github.com/kubernetes/community/blob/master/sig-list.md).