Add new ansible role to replace how i'm doing server builds.

- role based allows me to write better playbooks
- will allow for easier / more client config for wg vpn.

deployments/serverBuild/wg_vpn/README.md

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+Role Name
+=========
+
+A brief description of the role goes here.
+
+Requirements
+------------
+
+Any pre-requisites that may not be covered by Ansible itself or the role should be mentioned here. For instance, if the role uses the EC2 module, it may be a good idea to mention in this section that the boto package is required.
+
+Role Variables
+--------------
+
+A description of the settable variables for this role should go here, including any variables that are in defaults/main.yml, vars/main.yml, and any variables that can/should be set via parameters to the role. Any variables that are read from other roles and/or the global scope (ie. hostvars, group vars, etc.) should be mentioned here as well.
+
+Dependencies
+------------
+
+A list of other roles hosted on Galaxy should go here, plus any details in regards to parameters that may need to be set for other roles, or variables that are used from other roles.
+
+Example Playbook
+----------------
+
+Including an example of how to use your role (for instance, with variables passed in as parameters) is always nice for users too:
+
+    - hosts: servers
+      roles:
+         - { role: username.rolename, x: 42 }
+
+License
+-------
+
+BSD
+
+Author Information
+------------------
+
+An optional section for the role authors to include contact information, or a website (HTML is not allowed).

deployments/serverBuild/wg_vpn/defaults/main.yml

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+---
+# defaults file for wg_vpn

deployments/serverBuild/wg_vpn/handlers/main.yml

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+---
+# handlers file for wg_vpn

deployments/serverBuild/wg_vpn/meta/main.yml

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+galaxy_info:
+  author: your name
+  description: your description
+  company: your company (optional)
+
+  # If the issue tracker for your role is not on github, uncomment the
+  # next line and provide a value
+  # issue_tracker_url: http://example.com/issue/tracker
+
+  # Choose a valid license ID from https://spdx.org - some suggested licenses:
+  # - BSD-3-Clause (default)
+  # - MIT
+  # - GPL-2.0-or-later
+  # - GPL-3.0-only
+  # - Apache-2.0
+  # - CC-BY-4.0
+  license: license (GPL-2.0-or-later, MIT, etc)
+
+  min_ansible_version: 2.4
+
+  # If this a Container Enabled role, provide the minimum Ansible Container version.
+  # min_ansible_container_version:
+
+  #
+  # Provide a list of supported platforms, and for each platform a list of versions.
+  # If you don't wish to enumerate all versions for a particular platform, use 'all'.
+  # To view available platforms and versions (or releases), visit:
+  # https://galaxy.ansible.com/api/v1/platforms/
+  #
+  # platforms:
+  # - name: Fedora
+  #   versions:
+  #   - all
+  #   - 25
+  # - name: SomePlatform
+  #   versions:
+  #   - all
+  #   - 1.0
+  #   - 7
+  #   - 99.99
+
+  galaxy_tags: []
+    # List tags for your role here, one per line. A tag is a keyword that describes
+    # and categorizes the role. Users find roles by searching for tags. Be sure to
+    # remove the '[]' above, if you add tags to this list.
+    #
+    # NOTE: A tag is limited to a single word comprised of alphanumeric characters.
+    #       Maximum 20 tags per role.
+
+dependencies: []
+  # List your role dependencies here, one per line. Be sure to remove the '[]' above,
+  # if you add dependencies to this list.
+  

deployments/serverBuild/wg_vpn/tasks/main.yml

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+---
+# tasks file for wg_vpn
+# playbook to go from a "base configured" server to a wg vpn peer
+
+- hosts: vpn
+  remote_user: josiah
+  gather_facts: false
+  become: yes
+
+  tasks:
+    - name: add unstable to repos
+      shell: |
+        echo "deb http://deb.debian.org/debian/ unstable main" > /etc/apt/sources.list.d/unstable.list
+        printf 'Package: *\nPin: release a=unstable\nPin-Priority: 90\n' > /etc/apt/preferences.d/limit-unstable
+
+    - name: Update aptitude
+      apt: update_cache=yes
+
+    - name: install wireguard
+      apt: name=wireguard state=latest
+
+    - name: install linux headers (necessary on older cloud kernels (fuck u digitalocean))
+      # the kernel version is hard coded because this is what DO currently uses
+      # and that's what i use
+      apt: name=linux-headers-4.19.0-6-cloud-amd64
+    - name: install misc other things the internet says i need
+      apt: name=build-essential
+    - name: install misc other things the internet says i need      
+      apt: name=dkms
+    - name: install misc other things the internet says i need      
+      apt: name=openresolv      
+
+    - name: enable kernel relay/forwarding
+      shell: |
+        echo "net.ipv4.ip_forward = 1" >> /etc/sysctl.conf
+        echo "net.ipv4.conf.all.proxy_arp = 1" >> /etc/sysctl.conf
+        sudo sysctl -p /etc/sysctl.conf
+        iptables -A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
+        iptables -A FORWARD -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
+        iptables -A FORWARD -i wg0 -o wg0 -m conntrack --ctstate NEW -j ACCEPT
+        iptables -t nat -A POSTROUTING -s 10.200.219.0/24 -o eth0 -j MASQUERADE
+
+    - name: ensure /etc/wireguard/ exists
+      file:
+        path: /etc/wireguard/
+        state: directory
+        
+    - name: Generate keys
+      shell: |
+        printf "[Interface]\nPrivateKey = " > /etc/wireguard/wg0.conf
+        wg genkey | tee -a /etc/wireguard/wg0.conf | wg pubkey > /etc/wireguard/publickey
+      vars:
+        umask: "077"
+
+    - name: register publickey for later use
+      shell: cat /etc/wireguard/publickey
+      register: server_publickey
+      
+      # install wg, generate keys, files on local machine
+    - name: (local) install wg (i use) arch (btw)
+      pacman:
+        update_cache: yes
+        name: wireguard-tools, wireguard-arch
+        state: present
+      delegate_to: localhost
+
+    - name: (local) ensure /etc/wireguard/ exists
+      file:
+        path: /etc/wireguard/
+        state: directory
+      delegate_to: localhost
+
+    - name: (local) Generate keys
+      shell: |
+        printf "[Interface]\nPrivateKey = " > /etc/wireguard/wg0.conf
+        wg genkey | tee -a /etc/wireguard/wg0.conf | wg pubkey > /etc/wireguard/publickey
+      vars:
+        umask: "077"
+      delegate_to: localhost
+      
+    - name: (local) register publickey for later use
+      shell: cat /etc/wireguard/publickey
+      register: arch_publickey        
+      delegate_to: localhost
+
+    - name: (local) fill out the rest of the wg0.conf file
+      blockinfile:
+        path: /etc/wireguard/wg0.conf
+        block: |
+          Address = 10.200.219.2/32, fd86:ea04:1115::2/128
+          DNS = 1.1.1.1
+          
+          [Peer]
+          PublicKey = {{ server_publickey.stdout }}
+          Endpoint = vpn.awful.club:51820
+          AllowedIPs = 0.0.0.0/0
+      delegate_to: localhost
+      
+    - name: fill out the rest of the wg0.conf file
+      blockinfile:
+        path: /etc/wireguard/wg0.conf
+        block: |
+          Address = 10.200.219.1/24
+          Address = fd86:ea04:1115::1/64          
+          ListenPort = 51820
+          SaveConfig = true
+          [Peer]
+          # name = luggable-laptop
+          PublicKey = {{ arch_publickey.stdout }}
+          AllowedIPs = 10.200.219.2/32, fd86:ea04:1115::2/128
+
+    - name: bring wg up on the relay node
+      shell: wg-quick up /etc/wireguard/wg0.conf
+
+    - name: test if wg is up on relay
+      shell: ping -c1 10.200.219.1
+      register: test_result
+
+    - name: (local) bring wg up on local
+      shell: wg-quick up wg0
+      delegate_to: localhost
+      
+    - name: (local) test if it worked on local
+      shell: ping -c1 10.200.219.2
+      register: test_result_local
+      delegate_to: localhost 
+
+    - name: Test tunnel
+      shell: ping -c1 10.200.219.1
+      register: test_tunnel_local
+      delegate_to: localhost
+      ignore_errors: yes

deployments/serverBuild/wg_vpn/tests/inventory

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+localhost
+

deployments/serverBuild/wg_vpn/tests/test.yml

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+---
+- hosts: localhost
+  remote_user: root
+  roles:
+    - wg_vpn

deployments/serverBuild/wg_vpn/vars/main.yml

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+---
+# vars file for wg_vpn