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combining cluster files

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Denise Schannon
2018-07-16 16:45:44 -07:00
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content/rancher/v2.x/en/clusters/_index-cluster-providers.md
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title: Cluster Providers
weight: 2105
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## Rancher Kubernetes Engine (RKE)
RKE is Rancher’s own lightweight Kubernetes installer. It works with any cloud providers, virtualization platforms, or bare metal servers. It integrates with node drivers to automatically provision nodes on AWS, Azure, DigitalOcean, vSphere, OpenStack, etc. Users can add custom nodes to the cluster by running the Rancher agent on these nodes.
<!-- ### RKE Clusters and Kubeconfig Files
Craig! Fill me in!
-->
## Cloud-Managed Kubernetes Clusters
Rancher integrates with cloud APIs so users can provision GKE, EKS, and AKS clusters directly from Rancher. New cloud managed Kubernetes clusters will be added as they become available.
## Imported Clusters
Users can import an existing Kubernetes cluster into Rancher. Rancher does not automate the provisioning, scaling, and upgrade of imported Kubernetes clusters. All other cluster management, policy management, and workload management capabilities of Rancher apply to imported clustered.
content/rancher/v2.x/en/clusters/_index-concepts.md
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title: Clusters
weight: 2100
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## What's a Cluster?
A cluster is a group of computing resources that work as a team to accomplish a goal. Each individual computer in a cluster is called a _node_.
## Cluster Creation
Rancher simplifies creation of Kubernetes clusters by allowing you to create them with the Rancher UI rather than a config file.
### Node Components
A Kubernetes cluster contains 3 types of nodes: etcd nodes, control plane nodes, and worker nodes.
#### etcd Nodes
The etcd nodes are used to run the etcd database. etcd is a key value store used as Kubernetes’ backing store for all cluster data. Even though you can run etcd on a single node, you need 3, 5, or 7 nodes for redundancy.
#### Control Plane Nodes
The control plane nodes are used to run the Kubernetes API server, scheduler, and controller manager. Control plane nodes are stateless since all cluster data are stored on etcd nodes. You can run control plane on 1 node, although 2 or more nodes are required for redundancy. You can also run control plane on etcd nodes.
#### Worker Nodes
Worker nodes are used to run the kubelet and the workload. It also runs the storage and networking drivers and ingress controllers when required. You create as many worker nodes as needed for your workload needs.
content/rancher/v2.x/en/clusters/_index-tasks.md
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title: Clusters
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content/rancher/v2.x/en/clusters/_index.md
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- /rancher/v2.x/en/concepts/clusters/
- /rancher/v2.x/en/concepts/clusters/cluster-providers/
- /rancher/v2.x/en/tasks/clusters/
- /rancher/v2.x/en/tasks/clusters/creating-a-cluster/
---
## What's a Kubernetes Cluster?
A cluster is a group of computing resources that work as a team to accomplish a goal. Each individual computer in a cluster is called a _node_.
## Cluster Creation
Rancher simplifies creation of Kubernetes clusters by allowing you to create them with the Rancher UI rather than a config file.
### Node Components
A Kubernetes cluster contains 3 types of nodes: etcd nodes, control plane nodes, and worker nodes.
#### etcd Nodes
The etcd nodes are used to run the etcd database. etcd is a key value store used as Kubernetes’ backing store for all cluster data. Even though you can run etcd on a single node, you need 3, 5, or 7 nodes for redundancy.
#### Control Plane Nodes
The control plane nodes are used to run the Kubernetes API server, scheduler, and controller manager. Control plane nodes are stateless since all cluster data are stored on etcd nodes. You can run control plane on 1 node, although 2 or more nodes are required for redundancy. You can also run control plane on etcd nodes.
#### Worker Nodes
Worker nodes are used to run the kubelet and the workload. It also runs the storage and networking drivers and ingress controllers when required. You create as many worker nodes as needed for your workload needs.
## Rancher Kubernetes Engine (RKE)
RKE is Rancher’s own lightweight Kubernetes installer. It works with any cloud providers, virtualization platforms, or bare metal servers. It integrates with node drivers to automatically provision nodes on AWS, Azure, DigitalOcean, vSphere, OpenStack, etc. Users can add custom nodes to the cluster by running the Rancher agent on these nodes.
<!-- ### RKE Clusters and Kubeconfig Files
Craig! Fill me in!
-->
## Cloud-Managed Kubernetes Clusters
Rancher integrates with cloud APIs so users can provision GKE, EKS, and AKS clusters directly from Rancher. New cloud managed Kubernetes clusters will be added as they become available.
## Imported Clusters
Users can import an existing Kubernetes cluster into Rancher. Rancher does not automate the provisioning, scaling, and upgrade of imported Kubernetes clusters. All other cluster management, policy management, and workload management capabilities of Rancher apply to imported clustered.