5.6 KiB
| title | description | weight | extra | ||
|---|---|---|---|---|---|
| Le dépôt des secrets | Le dépôt des secrets | 10 |
|
We use pass, 'the standard unix password manager', to manage our key store securely at Deuxfleurs. Getting access to our production involves publishing one's GPG key (through Gitea) and importing/verifying/signing every other sysadmin's key, before setting up pass. Lastly, you will be able to set your shell password on the desired cluster (prod or staging, at the time of writing).
Our process was adapted from this Medium article — thanks, David!
You are new and want to access the secrets repository
You need a GPG key to start with. If you do not already have one, you can generate a new one with:
gpg2 --expert --full-gen-key
# Personnaly I use `9) ECC and ECC`, `1) Curve 25519`, and `5y`
In any case, you need to export your public key. Upload the output (public key) of the following command to your Gitea account.
gpg2 --export --armor <your email address>
It is now publicly accessible at https://git.deuxfleurs.fr/<your_gitea_username>.gpg
Inform all the other sysadmins that you have published your key for them to import/verify/sign it.
Import/verify/sign every other sysadmin's key into your keychain
You now need to import and sign every other sysadmin's GPG key. For example, import Quentin's key to your keychain as follow:
gpg2 --import <(curl https://git.deuxfleurs.fr/quentin.gpg)
gpg2 --list-keys
# pub ed25519/0xE9602264D639FF68 2022-04-19 [SC] [expire : 2027-04-18]
# Empreinte de la clef = 8023 E27D F1BB D52C 559B 054C E960 2264 D639 FF68
# uid [ ultime ] Quentin Dufour <quentin@deuxfleurs.fr>
# sub cv25519/0xA40574404FF72851 2022-04-19 [E] [expire : 2027-04-18]
How to read this snippet:
- the key id:
E9602264D639FF68- the key fingerprint:
8023 E27D F1BB D52C 559B 054C E960 2264 D639 FF68
To perform the check, you need another communication channel (ideally physically, otherwise through the phone, Matrix if you already trusted the other person, or else). Compare the signature you read with the sysadmin's. If they match, you good.
Now that you have verified the key, sign it:
gpg --edit-key quentin@deuxfleurs.fr # by email
# or
gpg --edit-key E9602264D639FF68 # by key id
# gpg> lsign
# (say yes, maybe several times)
# gpg> save
Once you signed every sysadmin, ask an administrator to add your key to the secrets keystore. They will need to Add a sysadmin.
Once your fellow admin has finished their job, you are ready to install pass:
sudo apt-get install pass # Debian + Ubuntu
sudo yum install pass # Fedora + RHEL
sudo zypper in password-store # OpenSUSE
sudo emerge -av pass # Gentoo
sudo pacman -S pass # Arch Linux
brew install pass # macOS
pkg install password-store # FreeBSD
Go to passwordstore.org for more information about pass.
Download the repository:
mkdir -p ~/.password-store
cd ~/.password-store
git clone git@git.deuxfleurs.fr:Deuxfleurs/secrets.git deuxfleurs
Finally check that everything works:
pass show deuxfleurs
If you see a listing, it worked. Last step is to select a shell password for yourself on the cluster you are now in charge of (prod or staging, at the time of writing).
Clone the nixcfg repository:
git clone git@git.deuxfleurs.fr:Deuxfleurs/nixcfg.git
cd nixcfg
Use the passwd utility to set your shell password:
./passwd
> Usage: ./passwd <cluster name> <username>
> The cluster name must be the name of a subdirectory of cluster/
This commited changes to Deuxfleurs' password store, do verify your modifications before pushing them:
cd ~/.password-store/deuxfleurs
git diff
git push
You should now be able to ssh into our infrastructure with a unified shell password. This is explicated in nixcfg repo's README. Be cautious, and enjoy!
With great power comes great responsibility.
You are a sysadmin and want to operate the secrets repository
Initialise the pass store
These instructions are for bootstrapping the pass store. Don't do it on Deuxfleurs' secrets repository (don't be like ADRN). You would override the existing sysadmins and generally have a bad time.
Generate a new password store named deuxfleurs for you:
pass init -p deuxfleurs you@example.com
Add a password in this store, it will be encrypted with your gpg key:
pass generate deuxfleurs/backup_nextcloud 20
# or
pass insert deuxfleurs/backup_nextcloud
Add a sysadmin
Edit ~/.password-store/acme/.gpg-id and add the id of the newbie:
alice@example.com
jane@example.com
bob@example.com
Make sure that you trust the keys of your new sysadmin:
$ gpg --edit-key jane@example.com
gpg> lsign
gpg> y
gpg> save
Now re-encrypt the secrets and push your modifications:
pass init -p deuxfleurs $(cat ~/.password-store/deuxfleurs/.gpg-id)
cd ~/.password-store/deuxfleurs
git commit
git push
They will now be able to decrypt any password:
pass deuxfleurs/backup_nextcloud
Sharing with git
To create the repo on bootstrap exclusively:
cd ~/.password-store/deuxfleurs
git init
git add .
git commit -m "Initial commit"
# Set up remote
git push
To retrieve the repo:
mkdir -p ~/.password-store
cd ~/.password-store
git clone https://git.example.com/org/repo.git deuxfleurs