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adding 'standalone' wording to hosted control planes overview

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Laura Hinson
2022-12-01 13:19:55 -05:00
committed by openshift-cherrypick-robot
parent bdb7440356
commit 2ec56de140
2 changed files with 3 additions and 3 deletions
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modules/hosted-control-planes-overview.adoc
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@@ -17,11 +17,11 @@ include::snippets/technology-preview.adoc[]
[id="hosted-control-planes-architecture_{context}"]
== Architecture of hosted control planes
Typically, {product-title} is deployed in a coupled model, where a cluster consists of a control plane and a data plane. The control plane includes an API endpoint, a storage endpoint, a workload scheduler, and an actuator that ensures state. The data plane includes compute, storage, and networking where workloads and applications run.
{product-title} is often deployed in a coupled, or standalone, model, where a cluster consists of a control plane and a data plane. The control plane includes an API endpoint, a storage endpoint, a workload scheduler, and an actuator that ensures state. The data plane includes compute, storage, and networking where workloads and applications run.
The control plane is hosted by a dedicated group of nodes, which can be physical or virtual, with a minimum number to ensure quorum. The network stack is shared. Administrator access to a cluster offers visibility into the cluster's control plane, machine management APIs, and other components that contribute to the state of a cluster.
The standalone control plane is hosted by a dedicated group of nodes, which can be physical or virtual, with a minimum number to ensure quorum. The network stack is shared. Administrator access to a cluster offers visibility into the cluster's control plane, machine management APIs, and other components that contribute to the state of a cluster.
Although the coupled model works well, some situations require an architecture where the control plane and data plane are decoupled. In those cases, the data plane is on a separate network domain with a dedicated physical hosting environment. The control plane is hosted by using high-level primitives such as deployments and stateful sets that are native to Kubernetes. The control plane is treated as any other workload.
Although the standalone model works well, some situations require an architecture where the control plane and data plane are decoupled. In those cases, the data plane is on a separate network domain with a dedicated physical hosting environment. The control plane is hosted by using high-level primitives such as deployments and stateful sets that are native to Kubernetes. The control plane is treated as any other workload.
image::hosted-control-planes-diagram.png[Diagram that compares the hosted control plane model against OpenShift with a coupled control plane and workers]