create wireguard playbook

ansible/host_vars/nimbus.yml

@@ -1,6 +1,9 @@
 $ANSIBLE_VAULT;1.1;AES256
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+63643930633266653765

ansible/playbooks/wireguard.yml

@@ -0,0 +1,107 @@
+---
+- name: Install Wireguard on Server
+  hosts: nimbus
+  become: true
+
+  tasks:
+    - name: Install wireguard tools and dig
+      ansible.builtin.package:
+        name:
+          - wireguard-tools
+          - bind
+
+    - name: Create private key
+      ansible.builtin.shell:
+        chdir: /etc/wireguard/
+        creates: /etc/wireguard/server_public_key
+        cmd: "wg genkey | tee server_private_key | wg pubkey > server_public_key"
+
+    - name: Remember the public key
+      ansible.builtin.command: cat /etc/wireguard/server_public_key
+      register: wireguard_public_key
+
+    - name: Get server public IP
+      ansible.builtin.command: dig +short myip.opendns.com @resolver1.opendns.com
+      register: wireguard_public_ip
+
+    - name: Allow ipv4 forwarding
+      ansible.builtin.lineinfile:
+        path: /etc/sysctl.d/wg.conf
+        line: net.ipv4.ip_forward=1
+        create: yes
+
+    - name: Start the wireguard service
+      ansible.builtin.service:
+        name: wg-quick@wg0
+        enabled: yes
+
+- name: Install Wireguard on Host
+  hosts: localhost
+  become: true
+
+  tasks:
+    - name: Install wireguard tools
+      ansible.builtin.package:
+        name:
+          - wireguard-tools
+
+    - name: Create private key
+      ansible.builtin.shell:
+        chdir: /etc/wireguard/
+        creates: /etc/wireguard/dmz_public_key
+        cmd: "wg genkey | tee dmz_private_key | wg pubkey > dmz_public_key"
+
+    - name: Remember the public key
+      ansible.builtin.command: cat /etc/wireguard/dmz_public_key
+      register: client_public_key
+
+- name: Generate Server Config
+  hosts: nimbus
+  become: true
+
+  tasks:
+
+    - name: Create wg0 configuration
+      ansible.builtin.shell:
+        chdir: /etc/wireguard/
+        creates: /etc/wireguard/wg0.conf
+        cmd: |
+          echo "
+          [Interface]
+          Address = 10.0.0.1/24
+          SaveConfig = true
+          PrivateKey = $(cat server_private_key)
+          ListenPort = 51900
+          
+          PostUp = iptables -A FORWARD -i %i -j ACCEPT; iptables -A FORWARD -o %i -j ACCEPT; iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
+          PostDown = iptables -D FORWARD -i %i -j ACCEPT; iptables -D FORWARD -o %i -j ACCEPT; iptables -t nat -D POSTROUTING -o eth0 -j MASQUERADE
+          
+          [Peer]
+          PublicKey = {{ hostvars['localhost']['client_public_key']['stdout'] }}
+          AllowedIPs = 10.0.0.2/32
+          " > /etc/wireguard/wg0.conf
+
+
+- name: Generate Client Config
+  hosts: localhost
+  become: true
+
+  tasks:
+
+    - name: Create wg0 client configuration
+      ansible.builtin.shell:
+        chdir: /etc/wireguard/
+        creates: /etc/wireguard/wg0-client.conf
+        cmd: |
+          echo "
+          [Interface]
+          Address = 10.0.0.2/32
+          PrivateKey = $(cat dmz_private_key)
+          DNS = 9.9.9.9
+
+          [Peer]
+          PublicKey = {{ hostvars['nimbus']['wireguard_public_key']['stdout'] }}
+          Endpoint = space.xecut.me:51900
+          AllowedIPs = 10.0.0.1/32
+          " > /etc/wireguard/wg0-client.conf
+