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Reorganize node requirements

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Catherine Luse
2021-01-07 10:01:12 -07:00
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content/rancher/v2.x/en/installation/requirements/_index.md
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@@ -25,38 +25,12 @@ The Rancher UI works best in Firefox or Chrome.
# Operating Systems and Container Runtime Requirements
The node requirements depend on how Rancher is installed.
### Requirements for Installing Rancher on an RKE Kubernetes Cluster with the Helm CLI
Rancher should work with any modern Linux distribution.
For details on which OS and Docker versions were tested with each Rancher version, refer to the [support maintenance terms.](https://rancher.com/support-maintenance-terms/)
RKE should work with any modern Docker version, while K3s should work with any modern version of Docker or containerd.
### Requirements for Installing Rancher with RancherD
_The RancherD install is available as of v2.5.4. It is an experimental feature._
At this time, only Linux OSes that leverage systemd are supported.
To install RancherD on SELinux Enforcing CentOS 8 or RHEL 8 nodes, some [additional steps](#rancherd-on-selinux-enforcing-centos-8-or-rhel-8-nodes) are required.
Docker is not required for RancherD installs.
### Requirements for Installing Rancher on a K3s Kubernetes Cluster
K3s should run on just about any flavor of Linux.
Docker is required for nodes that will run K3s or RKE Kubernetes clusters. It is not required for RancherD installs.
For details on which OS and Docker versions were tested with each Rancher version, refer to the [support maintenance terms.](https://rancher.com/support-maintenance-terms/)
If you are installing Rancher on a K3s cluster with **Raspbian Buster**, follow [these steps]({{<baseurl>}}/k3s/latest/en/advanced/#enabling-legacy-iptables-on-raspbian-buster) to switch to legacy iptables.
If you are installing Rancher on a K3s cluster with Alpine Linux, follow [these steps]({{<baseurl>}}/k3s/latest/en/advanced/#additional-preparation-for-alpine-linux-setup) for additional setup.
### General Linux Requirements
All supported operating systems are 64-bit x86.
The `ntp` (Network Time Protocol) package should be installed. This prevents errors with certificate validation that can occur when the time is not synchronized between the client and server.
@@ -65,6 +39,28 @@ Some distributions of Linux may have default firewall rules that block communica
If you plan to run Rancher on ARM64, see [Running on ARM64 (Experimental).]({{<baseurl>}}/rancher/v2.x/en/installation/options/arm64-platform/)
### RKE Specific Requirements
For the container runtime, RKE should work with any modern Docker version.
### K3s Specific Requirements
For the container runtime, K3s should work with any modern version of Docker or containerd.
If you are installing Rancher on a K3s cluster with **Raspbian Buster**, follow [these steps]({{<baseurl>}}/k3s/latest/en/advanced/#enabling-legacy-iptables-on-raspbian-buster) to switch to legacy iptables.
If you are installing Rancher on a K3s cluster with Alpine Linux, follow [these steps]({{<baseurl>}}/k3s/latest/en/advanced/#additional-preparation-for-alpine-linux-setup) for additional setup.
### RancherD Specific Requirements
_The RancherD install is available as of v2.5.4. It is an experimental feature._
At this time, only Linux OSes that leverage systemd are supported.
To install RancherD on SELinux Enforcing CentOS 8 or RHEL 8 nodes, some [additional steps](#rancherd-on-selinux-enforcing-centos-8-or-rhel-8-nodes) are required.
Docker is not required for RancherD installs.
### Installing Docker
Docker is required for Helm chart installs, and it can be installed by following the steps in the official [Docker documentation.](https://docs.docker.com/) Rancher also provides [scripts]({{<baseurl>}}/rancher/v2.x/en/installation/requirements/installing-docker) to install Docker with one command.