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Human readable automation instructions designed to predictably manage the configuration of macOS and Linux systems

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automaton

Human readable automation instructions designed to predictably manage the configuration of macOS and Linux systems

Usage

Although the vast majority of the tasks normally associated with setting up a new system have been automated, there are still a few steps that require manual procedures after the Ansible run.

Installation

Dependencies

First, make sure you have all those things installed:

  • git: to clone the repo
  • curl: to download files

Install

Then, run these steps:

$ git clone https://github.com/frankhinek/automaton ~/.automaton
$ cd ~/.automaton
$ git submodule update --init --recursive
$ ./run

Update

To update, you just need to git pull and run the bootstrap script again:

$ cd ~/.automaton
$ git pull origin master
$ ./run

PGP Keys

Automaton includes support for using PGP keys to sign git commits. If you wish to sign your commits, then follow the steps below.

Enable Git Signing

Start by ensuring that enable_git_signing is set to true in the all group variables.

Store Encrypted Git Signing Keys

Next, generate new git_signing_key variable values for the personal and work group variables. Use the following command to create a new encrypted string with Ansible vault:

$ ./gen-secret git_signing_key

When prompted, enter and confirm a vault password:

New vault password (default): 
Confirm new vault password (default): 

Type the value you wish to encrypt followed by pressing Ctrl+D twice:

Reading plaintext input from stdin. (ctrl-d to end input, twice if your content does not already have a newline)

Save the value after Encryption successful to the appropriate group_vars YAML file.

Secure Signing Keys

For daily use, especially on a mobile device such as a MacBook or Linux laptop, a strong security measure is to remove the master secret key from the keyring. You will often hear people refer to this as a laptop keyring. You can then use the signing subkey to sign git commits, etc. There are multiple ways to accomplish this. Two options are detailed below.

Option 1

  1. Import your public and private key pair to the new machine:
$ gpg --import my_gpg_private_key.asc
$ gpg --import my_gpg_public_key.asc
  1. Ensure that the Key ID printed is the correct one, and if so, then go ahead and add ultimate trust for it:
$ gpg --edit-key <KEY_ID>
...
Command>
  1. At the Command> prompt, type in trust.
  2. You will be prompted to decide how far to trust this key. Since, presumably, this is your key that you have verified you would enter 5 and answer y to confirm.
  3. Export the secret subkeys to file:
$ gpg --export-secret-subkeys --armor --output secret-subkeys.asc <KEY_ID>
  1. Delete all the secret keys of your key from the keyring. This includes the master key and all subkeys.
$ gpg --delete-secret-keys <KEY_ID>
  1. Version 2 of GnuPG will prompt you to confirm the deletion of the secret key of the master key and each subkey. You should respond y when prompted to delete the secret key and then confirm by entering y again.
  2. When prompted to delete the first subkey, enter n. This will result in an error message which indicates that the secret master key was deleted, but the subkeys were not deleted.

Option 2

  1. From a trusted machine that already contains your key in its keyring, export only the subkeys:
$ gpg --export-secret-subkeys --armor --output secret-subkeys.asc <KEY_ID>
  1. Export the public keys:
$ gpg --export --armor --output public-keys.asc <KEY_ID>
  1. Import the public keys into the keyring:
$ gpg --import public-keys.asc
  1. Import the secret subkeys, without the master secret key, into the daily use keyring:
$ gpg --import secret-subkeys.asc

Verify the Daily-use Keyring

Regardless of which approach you took, the output from the gpg -K command should display the master key with a hash character (e.g., sec#) indicating that the secret master key is missing as we intended.

To Do

  • Create a custom Homebrew formula to install the Automounter Helper.

Thanks

Rather than forking an existing Ansible macOS or Linux setup repository I started from a blank canvas and added only what I needed. However, nearly every bit of this was copied directly from or heavily based on work by the individuals listed below. Thanks to all that shared their code!

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Human readable automation instructions designed to predictably manage the configuration of macOS and Linux systems

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