198 lines
5.6 KiB
Markdown
198 lines
5.6 KiB
Markdown
+++
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title = "Le dépôt des secrets"
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description = "Le dépôt des secrets"
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weight = 10
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+++
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We use [pass, 'the standard unix password manager'](https://www.passwordstore.org/), 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).
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Our process was adapted from [this Medium article](https://medium.com/@davidpiegza/using-pass-in-a-team-1aa7adf36592) — thanks, David!
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## You are new and want to access the secrets repository
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You need a GPG key to start with.
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If you do not already have one, you can generate a new one with:
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```bash
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gpg2 --expert --full-gen-key
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# Personnaly I use `9) ECC and ECC`, `1) Curve 25519`, and `5y`
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```
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In any case, you need to export your public key. Upload the output (public key) of the following command to [your Gitea account](https://git.deuxfleurs.fr/user/settings/keys).
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```bash
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gpg2 --export --armor <your email address>
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```
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It is now publicly accessible at `https://git.deuxfleurs.fr/<your_gitea_username>.gpg`
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Inform all the other sysadmins that you have published your key for them to import/verify/sign it.
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### Import/verify/sign every other sysadmin's key into your keychain
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You now need to import and sign every other sysadmin's GPG key. For example, import Quentin's key to your keychain as follow:
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```bash
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gpg2 --import <(curl https://git.deuxfleurs.fr/quentin.gpg)
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gpg2 --list-keys
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# pub ed25519/0xE9602264D639FF68 2022-04-19 [SC] [expire : 2027-04-18]
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# Empreinte de la clef = 8023 E27D F1BB D52C 559B 054C E960 2264 D639 FF68
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# uid [ ultime ] Quentin Dufour <quentin@deuxfleurs.fr>
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# sub cv25519/0xA40574404FF72851 2022-04-19 [E] [expire : 2027-04-18]
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```
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> How to read this snippet:
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> - the key id: `E9602264D639FF68`
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> - the key fingerprint: `8023 E27D F1BB D52C 559B 054C E960 2264 D639 FF68`
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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.
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Now that you have verified the key, sign it:
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```bash
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gpg --edit-key quentin@deuxfleurs.fr # by email
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# or
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gpg --edit-key E9602264D639FF68 # by key id
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# gpg> lsign
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# (say yes, maybe several times)
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# gpg> save
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```
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Once you signed every sysadmin, ask an administrator to add your key to the secrets keystore. They will need to [Add a sysadmin](#add-a-sysadmin).
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Once your fellow admin has finished their job, you are ready to install `pass`:
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```bash
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sudo apt-get install pass # Debian + Ubuntu
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sudo yum install pass # Fedora + RHEL
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sudo zypper in password-store # OpenSUSE
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sudo emerge -av pass # Gentoo
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sudo pacman -S pass # Arch Linux
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brew install pass # macOS
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pkg install password-store # FreeBSD
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```
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*Go to [passwordstore.org](https://www.passwordstore.org/) for more information about pass*.
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Download the repository:
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```
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mkdir -p ~/.password-store
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cd ~/.password-store
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git clone git@git.deuxfleurs.fr:Deuxfleurs/secrets.git deuxfleurs
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```
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Finally check that everything works:
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```bash
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pass show deuxfleurs
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```
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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).
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Clone the nixcfg repository:
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```
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git clone git@git.deuxfleurs.fr:Deuxfleurs/nixcfg.git
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cd nixcfg
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```
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Use the passwd utility to set your shell password:
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```
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./passwd
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> Usage: ./passwd <cluster name> <username>
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> The cluster name must be the name of a subdirectory of cluster/
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```
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This commited changes to Deuxfleurs' password store, do verify your modifications before pushing them:
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```
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cd ~/.password-store/deuxfleurs
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git diff
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git push
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```
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You should now be able to `ssh` into our infrastructure with a unified shell password. This is explicated in `nixcfg` repo's [README](https://git.deuxfleurs.fr/Deuxfleurs/nixcfg#how-to-operate-a-node). Be cautious, and enjoy!
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> With great power comes great responsibility.
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---
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---
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## You are a sysadmin and want to operate the secrets repository
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## Initialise the pass store
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> 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.
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Generate a new password store named deuxfleurs for you:
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```
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pass init -p deuxfleurs you@example.com
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```
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Add a password in this store, it will be encrypted with your gpg key:
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```bash
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pass generate deuxfleurs/backup_nextcloud 20
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# or
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pass insert deuxfleurs/backup_nextcloud
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```
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## Add a sysadmin
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Edit `~/.password-store/acme/.gpg-id` and add the id of the newbie:
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```
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alice@example.com
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jane@example.com
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bob@example.com
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```
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Make sure that you trust the keys of your new sysadmin:
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```
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$ gpg --edit-key jane@example.com
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gpg> lsign
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gpg> y
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gpg> save
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```
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Now re-encrypt the secrets and push your modifications:
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```
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pass init -p deuxfleurs $(cat ~/.password-store/deuxfleurs/.gpg-id)
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cd ~/.password-store/deuxfleurs
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git commit
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git push
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```
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They will now be able to decrypt any password:
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```
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pass deuxfleurs/backup_nextcloud
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```
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## Sharing with git
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To create the repo _on bootstrap exclusively_:
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```bash
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cd ~/.password-store/deuxfleurs
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git init
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git add .
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git commit -m "Initial commit"
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# Set up remote
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git push
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```
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To retrieve the repo:
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```bash
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mkdir -p ~/.password-store
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cd ~/.password-store
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git clone https://git.example.com/org/repo.git deuxfleurs
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```
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