> For the complete documentation index, see [llms.txt](https://docs.platform9.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.platform9.com/managed-kubernetes/clusters/networking/cilium-cni/cilium-cni-system-requirements.md).

# Cilium CNI System Requirements

## Overview

This page lists the system requirements for each <code class="expression">space.vars.pmk</code>release that supports Cilium CNI. Requirements are based on the [Cilium system requirements](https://docs.cilium.io/en/stable/operations/system_requirements/) with <code class="expression">space.vars.company\_name</code>specific testing noted in the Tested column.

### Release 5.14 - Cilium 1.17.2

<table><thead><tr><th width="231.49609375">Components</th><th width="309.50390625">Required Versions</th><th>Tested</th></tr></thead><tbody><tr><td><a href="https://docs.cilium.io/en/v1.17/operations/system_requirements/#linux-kernel">Linux kernel</a></td><td>>= 5.4 or >= 4.18 on RHEL 8.10</td><td>_</td></tr><tr><td>etcd</td><td>>= 3.1.0</td><td>3.5.12</td></tr><tr><td><a href="https://www.releases.ubuntu.com/">Ubuntu</a></td><td>>=20.04</td><td>Ubuntu 22, Ubuntu 24</td></tr><tr><td><a href="https://www.redhat.com/en/technologies/linux-platforms/enterprise-linux">RedHat Enterprise Linux</a></td><td>>= 8.6</td><td>RHL 8.10</td></tr><tr><td><a href="https://centos.org/">CentOS</a></td><td>>= 8.6</td><td></td></tr><tr><td>Routing Mode</td><td>Tunnel</td><td></td></tr></tbody></table>

**Routing mode:** Tunnel

### Release 5.15 - Cilium 1.18.4

{% hint style="danger" %}
**Platform9 supports only Ubuntu 24.04 with Cilium 1.18.4.**

The following OS and kernel combinations are not compatible with Cilium 1.18:

* Ubuntu 22.04 LTS GA kernel (5.15.0-67-generic). **Upgrade to Ubuntu 24.04** which provides 5.15.0-1090-kvm to ensure Cilium 1.18.4 compatibility.
* RHEL 8.10 with kernel 4.18.0-553.el8\_10.x86\_64.
  {% endhint %}

<table><thead><tr><th width="226">Components</th><th width="380.21484375">Required Versions</th><th>Tested On</th></tr></thead><tbody><tr><td><a href="https://docs.cilium.io/en/v1.17/operations/system_requirements/#linux-kernel">Linux kernel</a></td><td>>= 5.15.0-67-generic or >= 4.18 on RHEL 8.10</td><td>_</td></tr><tr><td>etcd</td><td>>= 3.1.0</td><td>3.5.12</td></tr><tr><td><a href="https://www.releases.ubuntu.com/">Ubuntu</a></td><td>>=20.04</td><td>Ubuntu 24</td></tr><tr><td><a href="https://www.redhat.com/en/technologies/linux-platforms/enterprise-linux">RedHat Enterprise Linux</a></td><td>>= 8.6</td><td></td></tr><tr><td><a href="https://centos.org/">CentOS</a></td><td>>= 8.6</td><td></td></tr><tr><td>Routing Mode</td><td>Tunnel and Native (Using API call )</td><td></td></tr></tbody></table>

Most of the Above Requirements are taken from [official Cilium docs](https://docs.cilium.io/en/v1.18/operations/system_requirements/) .

{% hint style="warning" %}
For Cilium CNI, the kernel version in Ubuntu 22.04 is not supported by Cilium 1.18.4. Ubuntu 22.04 LTS GA kernel (**5.15.0-67-generic**) is incompatible. Users must upgrade to **Ubuntu 24.04** or Ubuntu 22.04 HWE kernel, which provides **5.15.0-1090-kvm** to ensure Cilium 1.18.4 compatibility.
{% endhint %}


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.platform9.com/managed-kubernetes/clusters/networking/cilium-cni/cilium-cni-system-requirements.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.