OKD - Create a Homelab Cluster

I've had a few encounters with OCP and OKD for a bit of time now so I thought I might as well write a short guide on how to set up a Cluster in your homelab. I'll be using the UPI Method, meaning I'll have to stand up the infrastructure myself but this allows me for more flexibility down the road.

This is a rough schematic of what we'll be working on:

Some Prerequirements:

a functional FreeIPA setup which will be used for DNS
a working dhcpd instance to reserve fixed addresses based on the mac addresses of all coreos nodes
two helper nodes for HAProxy, Keepalived and HTTPD to host files required by the installer
three control plane (master) nodes
at least two worker nodes

This is the (virtual) hardware sizing used for my cluster:

helper nodes:

vCPU: 2
RM: 2048MiB
Disk: 32GB

control plane nodes:

CPU: 8
RAM: 16384MiB
Disk: 128GB

worker nodes:

CPU: 8
RAM: 16384MiB
Disk: 128GB

So there's definitely a bit of hardware involved to satisfy these requirements.

This tutorial is split into multiple parts:

Please note that parts 3 and 4 should be run on all helper nodes in order to have a full HA Setup with the helper nodes.

Feel free to comment and / or suggest a topic.

Comments

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