tai271828

Install armhf debian system on qemu

Environment

Operation system: Ubuntu 16.04.6 LTS

QEMU emulator version: 2.5.0

Installation

tai271828

#!/bin/bash
# Author: Hsieh-Ting Lin
# Title: "rename"
# Date: "2024-02-05"
# Version: 1.0.0
# desc: rename by ChatGPT

API_ENDPOINT="https://api.openai.com/v1/chat/completions"

pdf_folder="."

tai271828

This allows you to run qemu-debootstrap armhf on arm64 systems that does not support armhf native.

```
update-binfmts --package qemu-user-static --install qemu-arm /usr/bin/qemu-arm-static --magic "\x7f\x45\x4c\x46\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x28\x00" --mask "\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff" --offset 0 --credential yes
```

Then run `qemu-debootstrap` as normal

tai271828

# Docs:
 - https://wiki.ubuntu.com/FoundationsTeam/AutomatedServerInstalls
 - https://wiki.ubuntu.com/FoundationsTeam/AutomatedServerInstalls/ConfigReference
 - https://cloudinit.readthedocs.io/en/latest/topics/datasources/nocloud.html
 - https://discourse.ubuntu.com/t/please-test-autoinstalls-for-20-04/15250/53

# Download ISO Installer:
wget https://ubuntu.volia.net/ubuntu-releases/20.04.1/ubuntu-20.04.1-live-server-amd64.iso

# Create ISO distribution dirrectory:

tai271828

Update an initramfs with contents of a directory without root

This tool allows you to take a initramfs and add contents of a directory to it. This is very useful if you need to test initramfs, you can simply take the original and add your files "over".

Also, because it does not extract the original cpio archive, it works without root.

Usage:

Usage: overlay-initramfs [ options ] source-initramfs directory [output]

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Ubuntu Auto Install

This allows user to do automated installation of ubuntu. Provided here a a few different files/scripts for making this easier.

I've used this to verify that d-i kernel and initramfs from -proposed work as shown in bug 1511497.

The provided 'preseed' below can be used as a fully automated installation of ubuntu. Boot with qemu like:

note python web server is useful for this (python -m SimpleHTTPServer 9999)

tai271828

Ubuntu Auto Install

This allows user to do automated installation of ubuntu. Provided here a a few different files/scripts for making this easier.

I've used this to verify that d-i kernel and initramfs from -proposed work as shown in bug 1511497.

The provided 'preseed' below can be used as a fully automated installation of ubuntu. Boot with qemu like:

note python web server is useful for this (python -m SimpleHTTPServer 9999)

tai271828

#!/usr/bin/env python

from gevent import monkey
monkey.patch_all()  # Patch everything
import gevent
import time


class Hub(object):
    """A simple reactor hub... In async!"""

tai271828

curtin install with launch

Curtin has a test suite named vmtest. It has loads of configs for installation that put curtin through a battery. As of this writing it runs 192 installations on amd64 covering all supported ubuntu releases. It runs nightly under jenkins. See example results in the curtin-vmtest-devel-amd64 job.

If you're interested just a general use of curtin without starting a VM, see another article 'Curtin Development on uvt-kvm'.

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Debugging curtin from within MAAS

Deploying a node with MAAS cli

You can deploy a node with the maas cli which is often preferable to clicking a button on a web UI.

$ SYSTEM_ID=node-787b19d8-d25c-11e4-9f9e-00163eca91de
$ NAME="random-nodename"
$ MAASNAME="maaslocal"

$ maas $MAASNAME machine allocate "name=$NAME"