Migrate federated deployment task to new template (#3432)
* Migrate to new task template * Add prereq template for tasks and tutorials regarding federated clusters
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Andrew Chen
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This guide assumes that you have a running Kubernetes Cluster
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Federation installation. If not, then head over to the
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[federation admin guide](/docs/tutorials/federation/set-up-cluster-federation-kubefed/) to learn how to
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bring up a cluster federation (or have your cluster administrator do
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this for you).
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Other tutorials, such as Kelsey Hightower's
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[Federated Kubernetes Tutorial](https://github.com/kelseyhightower/kubernetes-cluster-federation),
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might also help you create a Federated Kubernetes cluster.
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@@ -2,38 +2,30 @@
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title: Federated Deployment
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---
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{% capture overview %}
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This guide explains how to use Deployments in the Federation control plane.
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* TOC
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{:toc}
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## Prerequisites
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This guide assumes that you have a running Kubernetes Cluster
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Federation installation. If not, then head over to the
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[federation admin guide](/docs/admin/federation/) to learn how to
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bring up a cluster federation (or have your cluster administrator do
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this for you).
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Other tutorials, such as Kelsey Hightower's
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[Federated Kubernetes Tutorial](https://github.com/kelseyhightower/kubernetes-cluster-federation),
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might also help you create a Federated Kubernetes cluster.
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You should also have a basic
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[working knowledge of Kubernetes](/docs/getting-started-guides/) in
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general and [Deployment](/docs/user-guide/deployments) in particular.
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## Overview
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Deployments in federation control plane (referred to as "Federated Deployments" in
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Deployments in the federation control plane (referred to as "Federated Deployments" in
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this guide) are very similar to the traditional [Kubernetes
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Deployment](/docs/user-guide/deployments/), and provide the same functionality.
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Deployment](/docs/concepts/workloads/controllers/deployment/) and provide the same functionality.
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Creating them in the federation control plane ensures that the desired number of
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replicas exist across the registered clusters.
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**As of Kubernetes version 1.5, Federated Deployment is an Alpha feature. The core
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functionality of Deployment is present, but some features
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(such as full rollout compatibility) are still in development.**
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{% endcapture %}
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{% capture prerequisites %}
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* {% include federated-task-tutorial-prereqs.md %}
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* You should also have a basic
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[working knowledge of Kubernetes](/docs/setup/pick-right-solution/) in
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general and [Deployments](/docs/concepts/workloads/controllers/deployment/) in particular.
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{% endcapture %}
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{% capture steps %}
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## Creating a Federated Deployment
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The API for Federated Deployment is compatible with the
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@@ -69,7 +61,7 @@ Federated Deployment.
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### Spreading Replicas in Underlying Clusters
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By default, replicas are spread equally in all the underlying clusters. For ex:
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By default, replicas are spread equally in all the underlying clusters. For example:
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if you have 3 registered clusters and you create a Federated Deployment with
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`spec.replicas = 9`, then each Deployment in the 3 clusters will have
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`spec.replicas=3`.
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@@ -106,3 +98,7 @@ For example, you can do that using kubectl by running:
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```shell
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kubectl --context=federation-cluster delete deployment mydep
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```
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{% endcapture %}
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{% include templates/task.md %}
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