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feat: enhance installation requirements for issue rancher/#28840
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papanito
@@ -11,18 +11,26 @@ This page describes the software, hardware, and networking requirements for the
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Make sure the node(s) for the Rancher server fulfill the following requirements:
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- [Operating Systems and Container Runtime Requirements](#operating-systems-and-container-runtime-requirements)
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- [RKE Specific Requirements](#rke-specific-requirements)
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- [K3s Specific Requirements](#k3s-specific-requirements)
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- [RancherD Specific Requirements](#rancherd-specific-requirements)
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- [RKE2 Specific Requirements](#rke2-specific-requirements)
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- [Installing Docker](#installing-docker)
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- [Hardware Requirements](#hardware-requirements)
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- [CPU and Memory](#cpu-and-memory)
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- [RKE and Hosted Kubernetes](#rke-and-hosted-kubernetes)
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- [K3s Kubernetes](#k3s-kubernetes)
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- [RancherD](#rancherd)
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- [RKE2](#rke2-kubernetes)
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- [CPU and Memory for Rancher before v2.4.0](#cpu-and-memory-for-rancher-before-v2-4-0)
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- [RKE and Hosted Kubernetes](#rke-and-hosted-kubernetes)
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- [K3s Kubernetes](#k3s-kubernetes)
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- [RancherD](#rancherd)
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- [RKE2 Kubernetes](#rke2-kubernetes)
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- [Docker](#docker)
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- [Ingress](#ingress)
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- [Ingress for RKE2](#ingress-for-rke2)
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- [Ingress for EKS](#ingress-for-eks)
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- [Disks](#disks)
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- [Networking Requirements](#networking-requirements)
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- [Node IP Addresses](#node-ip-addresses)
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- [Port Requirements](#port-requirements)
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- [Node IP Addresses](#node-ip-addresses)
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- [Port Requirements](#port-requirements)
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- [RancherD on SELinux Enforcing CentOS 8 or RHEL 8 Nodes](#rancherd-on-selinux-enforcing-centos-8-or-rhel-8-nodes)
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For a list of best practices that we recommend for running the Rancher server in production, refer to the [best practices section.]({{<baseurl>}}/rancher/v2.5/en/best-practices/deployment-types/)
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@@ -44,6 +52,8 @@ The `ntp` (Network Time Protocol) package should be installed. This prevents err
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Some distributions of Linux may have default firewall rules that block communication with Helm. We recommend disabling firewalld. For Kubernetes 1.19 and 1.20, firewalld must be turned off.
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> If you don't feel comfortable doing so you might check suggestions in the [respective issue](https://github.com/rancher/rancher/issues/28840). Some users were successful [creating a separate firewalld zone with a policy of ACCEPT for the Pod CIDR](https://github.com/rancher/rancher/issues/28840#issuecomment-787404822).
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If you plan to run Rancher on ARM64, see [Running on ARM64 (Experimental).]({{<baseurl>}}/rancher/v2.5/en/installation/options/arm64-platform/)
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### RKE Specific Requirements
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@@ -62,9 +72,9 @@ If you are installing Rancher on a K3s cluster with Alpine Linux, follow [these
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### RancherD Specific Requirements
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_The RancherD install is available as of v2.5.4. It is an experimental feature._
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_The RancherD install is available as of v2.5.4. It is an experimental feature._
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At this time, only Linux OSes that leverage systemd are supported.
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At this time, only Linux OSes that leverage systemd are supported.
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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.
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@@ -99,8 +109,6 @@ These CPU and memory requirements apply to each host in the Kubernetes cluster w
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These requirements apply to RKE Kubernetes clusters, as well as to hosted Kubernetes clusters such as EKS.
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| Deployment Size | Clusters | Nodes | vCPUs | RAM |
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| --------------- | ---------- | ------------ | -------| ------- |
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| Small | Up to 150 | Up to 1500 | 2 | 8 GB |
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@@ -109,7 +117,7 @@ These requirements apply to RKE Kubernetes clusters, as well as to hosted Kubern
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| X-Large | Up to 1000 | Up to 10,000 | 16 | 64 GB |
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| XX-Large | Up to 2000 | Up to 20,000 | 32 | 128 GB |
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[Contact Rancher](https://rancher.com/contact/) for more than 2000 clusters and/or 20,000 nodes.
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[Contact Rancher](https://rancher.com/contact/) for more than 2000 clusters and/or 20,000 nodes.
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### K3s Kubernetes
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@@ -123,7 +131,7 @@ These CPU and memory requirements apply to each host in a [K3s Kubernetes cluste
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| X-Large | Up to 1000 | Up to 10,000 | 16 | 64 GB | 2 cores, 4 GB + 1000 IOPS |
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| XX-Large | Up to 2000 | Up to 20,000 | 32 | 128 GB | 2 cores, 4 GB + 1000 IOPS |
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[Contact Rancher](https://rancher.com/contact/) for more than 2000 clusters and/or 20,000 nodes.
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[Contact Rancher](https://rancher.com/contact/) for more than 2000 clusters and/or 20,000 nodes.
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### RancherD
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@@ -189,7 +197,7 @@ To operate properly, Rancher requires a number of ports to be open on Rancher no
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# RancherD on SELinux Enforcing CentOS 8 or RHEL 8 Nodes
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Before installing Rancher on SELinux Enforcing CentOS 8 nodes or RHEL 8 nodes, you must install `container-selinux` and `iptables`:
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Before installing Rancher on SELinux Enforcing CentOS 8 nodes or RHEL 8 nodes, you must install `container-selinux` and `iptables`:
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```
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sudo yum install iptables
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