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Link updates and rephrasing (#7068) 

* removed link to self

* removed reference to deprecated documentation

* revised confusing statement, added more recent link to Kelsey Hightower Kubecon2017 talk
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leahnp 2018-01-30 17:10:34 -05:00 committed by Andrew Chen
parent 49f548ada8
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13
docs/concepts/cluster-administration/federation.md
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@ -34,7 +34,6 @@ why you might want multiple clusters are:
* Fault isolation: It might be better to have multiple small clusters rather * Fault isolation: It might be better to have multiple small clusters rather
than a single large cluster for fault isolation (for example: multiple than a single large cluster for fault isolation (for example: multiple
clusters in different availability zones of a cloud provider). clusters in different availability zones of a cloud provider).
See [Multi cluster guide](/docs/concepts/cluster-administration/federation/) for details.
* Scalability: There are scalability limits to a single kubernetes cluster (this * Scalability: There are scalability limits to a single kubernetes cluster (this
should not be the case for most users. For more details: should not be the case for most users. For more details:
[Kubernetes Scaling and Performance Goals](https://git.k8s.io/community/sig-scalability/goals.md)). [Kubernetes Scaling and Performance Goals](https://git.k8s.io/community/sig-scalability/goals.md)).
@ -64,11 +63,7 @@ some caveats:
Federations of Kubernetes Clusters can include clusters running in Federations of Kubernetes Clusters can include clusters running in
different cloud providers (e.g. Google Cloud, AWS), and on-premises different cloud providers (e.g. Google Cloud, AWS), and on-premises
(e.g. on OpenStack). Simply create all of the clusters that you (e.g. on OpenStack). [Kubefed](https://kubernetes.io/docs/tasks/federation/set-up-cluster-federation-kubefed/) is the recommended way to deploy federated clusters.
require, in the appropriate cloud providers and/or locations, and
register each cluster's API endpoint and credentials with your
Federation API Server (See the
[federation admin guide](/docs/admin/federation/) for details).
Thereafter, your [API resources](#api-resources) can span different clusters Thereafter, your [API resources](#api-resources) can span different clusters
and cloud providers. and cloud providers.
@ -132,8 +127,9 @@ We suggest that all the VMs in a Kubernetes cluster should be in the same availa
- when the Kubernetes developers are designing the system (e.g. making assumptions about latency, bandwidth, or - when the Kubernetes developers are designing the system (e.g. making assumptions about latency, bandwidth, or
correlated failures) they are assuming all the machines are in a single data center, or otherwise closely connected. correlated failures) they are assuming all the machines are in a single data center, or otherwise closely connected.
It is okay to have multiple clusters per availability zone, though on balance we think fewer is better. It is recommended to run fewer clusters with more VMs per availability zone; but it is possible to run multiple clusters per availability zones.
Reasons to prefer fewer clusters are:
Reasons to prefer fewer clusters per availability zone are:
- improved bin packing of Pods in some cases with more nodes in one cluster (less resource fragmentation). - improved bin packing of Pods in some cases with more nodes in one cluster (less resource fragmentation).
- reduced operational overhead (though the advantage is diminished as ops tooling and processes mature). - reduced operational overhead (though the advantage is diminished as ops tooling and processes mature).
@ -176,6 +172,7 @@ clusters up to 5000 nodes. See [Building Large Clusters](/docs/admin/cluster-lar
proposal](https://github.com/kubernetes/community/blob/{{page.githubbranch}}/contributors/design-proposals/multicluster/federation.md). proposal](https://github.com/kubernetes/community/blob/{{page.githubbranch}}/contributors/design-proposals/multicluster/federation.md).
* See this [setup guide](/docs/tutorials/federation/set-up-cluster-federation-kubefed/) for cluster federation. * See this [setup guide](/docs/tutorials/federation/set-up-cluster-federation-kubefed/) for cluster federation.
* See this [Kubecon2016 talk on federation](https://www.youtube.com/watch?v=pq9lbkmxpS8) * See this [Kubecon2016 talk on federation](https://www.youtube.com/watch?v=pq9lbkmxpS8)
* See this [Kubecon2017 Europe update on federation](https://www.youtube.com/watch?v=kwOvOLnFYck)
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