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catherineluse
2019-12-12 08:36:19 -07:00
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content/rancher/v2.x/en/installation/other-installation-methods/_index.md
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title: Other Installation Methods
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---
### Single Node Installations
The [single-node Docker installation]({{<baseurl>}}/rancher/v2.x/en/installation/other-installation-methods/single-node) is for Rancher users that are wanting to test out Rancher. Instead of running on a Kubernetes cluster using Helm, you install the Rancher server component on a single node using a `docker run` command.
Since there is only one node and a single Docker container, if the node goes down, there is no copy of the etcd data available on other nodes and you will lose all the data of your Rancher server.
### Air Gapped Installations
Follow [these steps]({{<baseurl>}}/rancher/v2.x/en/installation/other-installation-methods/air-gap) to install the Rancher server in an air gapped environment.
An air gapped environment could be where Rancher server will be installed offline, behind a firewall, or behind a proxy.
content/rancher/v2.x/en/installation/other-installation-methods/air-gap/_index.md
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### Air Gapped High Availability (HA) Installations
Rancher recommends installing Rancher in a Highly Available (HA) configuration in an air gapped environment.
This section covers how to install Rancher in a Highly Available (HA) configuration in an air gapped environment.
An HA installation is comprised of three nodes running the Rancher server components on a Kubernetes cluster. The persistence layer (etcd) is also replicated on these three nodes, providing redundancy and data duplication in case one of the nodes fails.