apt

URL=https://github.com/r-darwish/topgrade/releases/download/v5.5.0/topgrade-v5.5.0-x86_64-unknown-linux-gnu.tar.gz
 
wget ${URL} -qP /tmp
tar -C /tmp -xzf /tmp/topgrade-v*-x86_64-unknown-linux-gnu.tar.gz
sudo mv /tmp/topgrade /usr/local/sbin

# ~/.config/topgrade.toml
...
remote_topgrades = ["www.example.com", "db.example.com"]
 
[git]
repos = [
    "~/git/repository_1",
    "~/git/repository_2"
]
...

topgrade -cy

topgrade -cy --only remotes --remote-host-limit ".*.example.com"