Here is the latest, step-by-step complete guide to install and configure OKD — the open-source version of OpenShift — along with an introduction to what OKD is.

🧩 What is OKD?

✅ OKD Installation Methods (Summary)

🚀 Step-by-Step Guide: OKD 4.14 Installation (Bare Metal / UPI)

📦 We’ll install OKD 4.14 using the UPI (User-Provisioned Infrastructure) method on bare metal or custom virtual machines.

🛠️ 1. System Prerequisites

📥 2. Download OKD Tools

🔗 Download links:

• OKD Installer: https://github.com/openshift/okd/releases
• Fedora CoreOS (FCOS) images: https://getfedora.org/coreos

Download:

• openshift-install binary
• oc CLI binary
• Fedora CoreOS ISO and PXE images

🔐 3. Generate Install Config

./openshift-install create install-config --dir=okd-cluster

This prompts:

• Base domain (e.g., example.com)
• Cluster name (e.g., okd)
• Pull secret (use OKD-specific or fake secret for community)
• Platform (select “none” for bare metal/UPI)
• SSH key (for connecting to nodes)

This generates: install-config.yaml

🧾 4. Create Ignition Files

./openshift-install create ignition-configs --dir=okd-cluster

This creates:

• bootstrap.ign
• master.ign
• worker.ign

💽 5. Provision Fedora CoreOS Nodes

Use ISO or PXE to boot machines and provide the proper ignition file via kernel arguments:

coreos.inst.install_dev=/dev/sda
coreos.inst.image_url=<FCOS Live ISO URL>
coreos.inst.ignition_url=http://<http_server>/bootstrap.ign
Code language: HTML, XML (xml)

Set up:

• 1x Bootstrap node (use bootstrap.ign)
• 3x Master nodes (use master.ign)
• N x Worker nodes (use worker.ign)

🌐 6. Set Up Networking (DNS, DHCP, Load Balancer)

DNS records (for base domain):

Load Balancer Ports:

• API: 6443
• Machine Config Server: 22623
• Ingress (apps): 80, 443

🛑 7. Wait for Bootstrap Completion

Run:

./openshift-install wait-for bootstrap-complete --dir=okd-cluster --log-level=info

When done:

• Shutdown the bootstrap node

🎯 8. Finish Cluster Installation

Run:

./openshift-install wait-for install-complete --dir=okd-cluster

You’ll get:

• Web Console URL: https://console-openshift-console.apps.okd.example.com
• Admin credentials (stored in auth/kubeadmin-password)

🧪 9. Login and Validate

Login via CLI:

oc login -u kubeadmin -p <password> https://api.okd.example.com:6443
Code language: HTML, XML (xml)

Access Web UI and verify that all nodes are healthy, and cluster is Ready.

🧹 Optional: Post-Install Tasks

🔄 Alternative: OKD IPI on AWS (Auto Infra)

OKD supports IPI (auto-provision) on AWS:

./openshift-install create cluster --dir=okd-aws

• Set platform: aws
• Must configure AWS credentials

📌 Where to Learn More

• OKD Docs: https://docs.okd.io/
• GitHub Releases: https://github.com/openshift/okd/releases
• FCOS: https://docs.fedoraproject.org/en-US/fedora-coreos/
• Community Support: https://discuss.okd.io/

Rajesh Kumar

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