new droplet for Ubuntu 24 LTS

My upgrade from Ubuntu 20 to 22 resulted in an inability to SSH to the server; see https://physicsderivationgraph.blogspot.com/2024/09/unable-to-ssh-into-vps-after-upgrade-of.html
I decided to get a new droplet and start from scratch with Ubuntu 24 LTS. Logged in as root via the web console,

adduser pdg
usermod -aG sudo pdg

ufw allow OpenSSH
ufw enable

Then I was able to SSH from my laptop to the VPS as "pdg"

sudo ufw allow 443
sudo ufw allow 80

edit ~/.bashrc to include

alias ..='cd ..'

Install Docker

sudo apt update
sudo apt upgrade
sudo apt install apt-transport-https curl
sudo apt install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
sudo apt update
sudo apt install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
sudo systemctl is-active docker

as per https://linuxiac.com/how-to-install-docker-on-ubuntu-24-04-lts/

To clone the github repos over SSH requires keys.

ssh-keygen

and upload the newly generated public key to https://github.com/settings/keys

Ubuntu 24 LTS doesn't come with make by default, so

sudo apt install make

By default the user pdg can't launch Docker, so

sudo usermod -a -G docker $USER
  newgrp docker

as per https://stackoverflow.com/a/48450294

Certs need to be loaded; see https://physicsderivationgraph.blogspot.com/2021/10/periodic-renewal-of-https-letsencrypt.html

sudo apt -y install certbot

Certbot requires a running webservice on port 80 to create new certificates.

Reference:
https://physicsderivationgraph.blogspot.com/2020/10/upgrading-ubuntu-1804-to-2004-on.html

unable to SSH into VPS after upgrade of Ubuntu from 20 to 22 LTS

Prior to upgrading from Ubuntu 20 to 22 LTS I was able to SSH from my local laptop to a remote VPS using the command

ssh -v username@IPaddress

After the upgrade I got

ssh -v username@IPaddress
OpenSSH_9.7p1, LibreSSL 3.3.6
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 21: include /etc/ssh/ssh_config.d/* matched no files
debug1: /etc/ssh/ssh_config line 54: Applying options for *
debug1: Authenticator provider $SSH_SK_PROVIDER did not resolve; disabling
debug1: Connecting to IPaddress [IPaddress] port 22.
debug1: connect to address IPaddress port 22: Operation timed out
ssh: connect to host IPaddress port 22: Operation timed out