I store most of my configuration files publicly on GitHub. However there are some programs which contain passwords in their config files, among these are irssi, Pidgin and osc.
It was very annoying to always configure those programs from the start on each computer.
So today I took the time and created a small server out of an old netbook. I switch it on on days I know I need a service on it and leave it off if I don’t.
It works as a git server so I can store my private-dotfiles in there. I also configured it to connect to my companies VPN and run irssi on it in a tmux session. This way I can reboot/shutdown my main computer as much as I want or can switch to another computer which I need to do from time to time. I would have used my Raspberry Pi for this, but I turned it into a game station and gave it to someone else.
On the netbook I run Funtoo and git was already installed on it.
First I created a new user as which we will log in, and added my public SSH keys to the authorized_keys file:
$: ssh root@avalon
$: useradd git
$: mkdir /home/git
$: chown git:users /home/git
$: su - git
$: mkdir .ssh
$: chmod 700 .ssh
$: vim .ssh/authorized_keys
The public SSH key can be found in ~/.ssh/id_rsa.pub. So I copied the ones from all of my computers and just pasted them into the file, one after another.
The reason for using SSH keys is that only computers that got registered (which key got added) can access the repos there, so we won’t user a password.
If you don’t have an SSH key yet you can create them via:
$: ssh-keygen -t rsa -b 4096 -C "alice@rabbit.hole"
I store all git repos in /home/git/. There I create a folder with the suffix .git for each repo:
$: mkdir privatedotfiles.git
$: cd privatedotfiles.git
$: git init --bare
Initialized empty Git repository in /home/git/privaterepos.git/
From my main machine I now run the following to push my private dotfiles to the server:
$: cd ~/where/my/privatedotfiles/reside
$: git init
$: git add . && git commit -m "initial"
$: git remote add avalon git@avalon:/home/git/privaterepos.git
$: git push avalon master
And from all the others I just clone to have it on my machine:
$: git clone git@avalon:/home/git/privaterepos.git
In case you already have a git repository on your machine and just want to add the new remote repository use
git remote add avalon ssh://git@avalonsipordomain.net:23/home/git/privaterepos.git
Make sure you have AllowUsers git in your /etc/ssh/sshd_config file if you have enabled access only for certain users.
References: git-scm