blog/blogs/git/git-server.md

create a git user

on debian, sudo adduser git

switch to git user with sudo su -l git

create a .ssh dir in the git user's home dir and make it only accessible by the git user

mkdir ~/.ssh
chmod 700 ~/.ssh

create an authorized_keys file in the .ssh folder, and make it accessible only by the git user

touch .ssh/authorized_keys
chmod 600 `.ssh/authorized_keys`

create a private/public key pair locally to authenticate a user on a machine to connect to the remote server

ssh-keygen -t rsa

and finally copy it into the (remote) git user's .ssh/authorized_keys, for example using ssh-copy-id or giving the public key to the server administrator.

creating bare git repositories

create directories within git's home dir (nested paths are allowed) with the .git extension, for example my-projects/my-repo.git or just my-repo.git.

git init --bare repo.git

there now exists an empty git repository on the server.

the remote can now be added to a local repository

git remote add origin git@server:my-repo.git
git push -u origin main

connecting using the key

add an entry to your local .ssh/config

Host myhost
    HostName        example.com
    User            git
    IdentityFile    ~/.ssh/id_rsa

and connect with

ssh myhost