Prepare the core

Progress checklist

• Ubuntu Server via shared walkthrough
• Hostname / user match this lab
• NUC_USER / NUC_HOST in walkthrough.env
• SSH from workstation succeeds

This lab’s core is a NUC6CAYNUC6CAY
Intel NUC6CAY — compact x86 PC used as the Greengrass core in this lab (spare unit on hand; any quiet Ubuntu 24.04 x86 host works). (or another x86_64 host). Ubuntu Server install lives in the shared guide below.

What this page owns vs the shared guide:

Ubuntu Server walkthrough

download → USB→Subiquity → first boot→prove SSH

this page

hostnamenuc-gg-edgeuserubuntu

Workstationwalkthrough.envNUC_USER · NUC_HOST

→

NUC · Ubuntu 24.04same LAN as the ESP32 later

→

Install NucleusAWS CLI stays on workstation

• Shared guide: install OS, prove SSH.
• This page: set nuc-gg-edge / ubuntu at Subiquity.
• Record NUC_USER / NUC_HOST, then SSH in.
• NUC never needs the AWS CLI.

Steps on this page:

1. 1Install Ubuntu Servershared walkthrough
2. 2Lab overridesnuc-gg-edge · ubuntu
3. 3Record NUC_HOSTwalkthrough.env
4. 4Prove SSHssh from workstation

Step 1 is the shared OS guide; 2–4 are this lab's wiring. The NUC never needs the AWS CLI.

Install Ubuntu Server

Do the whole guide:

Ubuntu Server walkthrough

Download → write USB → Subiquity → first boot → prove SSH. Stop when that guide’s SSH check works, then return here for lab wiring only.

Lab overrides at Profile

The shared guide defaults hostname ubuntu-server. For this lab, at Subiquity Profile use:

Setting	This lab
Server name	nuc-gg-edge
Username	ubuntu (matches NUC_USER)
OpenSSH	On (as in the shared guide)

Same LAN as the ESP32-S3ESP32-S3
Espressif ESP32-S3 — Wi‑Fi microcontroller used here as the Greengrass client device (not a second core). client(s) later.

Rename if already installed as ubuntu-server

sudo hostnamectl set-hostname nuc-gg-edge

(no output)

Also update /etc/hosts if it still lists ubuntu-server (common Subiquity 127.0.1.1 line).

Record NUC_HOST

Read hostname and LAN IP (NUC)

hostnamectl
ip -br a

Static hostname: nuc-gg-edge
…
Operating System: Ubuntu 24.04.5 LTS
…
enp3s0           UP             192.168.1.50/24 …

(Interface name varies — on this NUC6CAYB it was enp3s0.)

Set walkthrough.env (workstation)

NUC_USER=ubuntu
NUC_HOST=192.168.1.50

(no output)

Use your LAN IPv4 from ip -br a, not the sample above.

Prove SSH (lab env)

set -a && source config/walkthrough.env && set +a
ssh "${NUC_USER}@${NUC_HOST}" 'uname -a && lsb_release -ds'

Linux nuc-gg-edge 6.8.0-146-generic #146-Ubuntu … x86_64 …
Ubuntu 24.04.5 LTS

Note

You do not need AWS CLI on the NUC for a manual-provision install. Keep CLI on the workstation; copy only certs and (later) component files onto the NUC.

Next

Install Nucleus.