Ubuntu 20.04 server network install environment by docker-compose
This is the docker-compose environment for pxe boot.
Motivation
Set up ubuntu server is mess.
To make boot environment, USB device or Writable CD was required, Unfortunately I temporarily ran out of both.
So I created network boot environment by docker-compose.
Reuirement
The pxeboot requires two protocols which are DHCP and tftp.
| service | port | protocol |
|---|---|---|
| DHCP | 67 | UDP |
| TFTP | 69 | UDP |
Also you need the http path holds ISO file. The docker-compose contains nginx as holding the iso file.
| service | port | protocol |
|---|---|---|
| HTTP | 80 | TCP |
Make sure firewall allowed and another process does not occupy the ports at the server.
Build
docker build . -t pxeboot-ubuntu-20.04
Run
You have to probvide .env file like the below.
To be simplify, I provide a script which determine current ip and phisical device.
sh create_env.sh > .env
The script creates like the below env file used by dnsmasq.
You can change the environmtnt variable you want to.
.env
#interface
interface=eth0,lo
#ip range
iprange_low=192.168.0.201
iprange_high=192.168.0.245
#server ip
server_ip=192.168.0.1
#http(actual iso path)
focal=/home/axt/Downloads/focal-live-server-amd64.iso
You have to download focal-live-server iso image from ubuntu (mirror) server.
And mount it to /mnt/cd which uses by docker-compose.
sudo mount /mnt/cd
And be determined where is the path as environment variable 'focal' by the .env file like the above.
That is prerequired.
Then, server and target client is connected locally. (Crossover cable or HUB not connected others)
At server,
docker-compose up -d
At target client which you want to install ubuntu server,
boot via pxe.
appendix
How to get iso
Daily live iso is here
See
Instruction how to install via netboot is the below.
https://discourse.ubuntu.com/t/netbooting-the-live-server-installer/14510