Add DDNS service to the Pi

roles/cloudflare-ddns/files/cloudflare_ddns.timer

@@ -0,0 +1,10 @@
+[Unit]
+Description=Cloudflare DDNS timer
+
+[Timer]
+OnCalendar=daily
+RandomizedDelaySec=900
+Persistent=true
+
+[Install]
+WantedBy=timers.target

roles/cloudflare-ddns/files/cloudflare_ddns/cloudflare_ddns.py

@@ -40,8 +40,8 @@ for subdomain in subdomains:
 
     resolvedIP = resolve_name(fullDomainName)
     if resolvedIP == publicIP:
-        logging.info(f'Currently resolved name already matches the public ip ({publicIP}), exiting...')
-        exit(0)
+        logging.info(f'Currently resolved name already matches the public ip ({publicIP}), skipping this name...')
+        continue
 
     zoneId = cloudflare.get_zone_id(fixedTopLevelDomain)
     recordId = cloudflare.get_record_id(zoneId, fullDomainName)

roles/cloudflare-ddns/files/cloudflare_ddns/cloudflare_ddns.sh

@@ -0,0 +1,3 @@
+#!/usr/bin/bash
+source ~/bin/cloudflare_ddns/venv/bin/activate
+python3 ~/bin/cloudflare_ddns/cloudflare_ddns.py --config-file ~/cloudflare_ddns/ddns_config.ini $@

roles/cloudflare-ddns/tasks/main.yml

@@ -7,3 +7,60 @@
   vars:
     username: cloudflare_ddns
     password: "{{ cloudflare_ddns_user_password }}"
+- name: Install Python dependencies # noqa: package-latest
+  become: true
+  ansible.builtin.apt:
+    pkg: python3-pip
+    state: latest
+- name: Copy over DDNS scripting
+  become: true
+  become_user: cloudflare_ddns
+  ansible.builtin.copy:
+    src: cloudflare_ddns
+    dest: ~/bin/
+    mode: '0700'
+- name: Configure Python venv
+  become: true
+  become_user: cloudflare_ddns
+  ansible.builtin.shell: |
+    cd ~/bin/cloudflare_ddns
+    python3 -m venv ./venv
+    chmod u+x ./venv/bin/activate
+    source ./venv/bin/activate
+    pip3 install -r ./requirements.txt
+  args:
+    executable: /bin/bash
+    creates: ~/bin/cloudflare_ddns/venv
+- name: Create directory for storing public IP change logs and config
+  become: true
+  become_user: cloudflare_ddns
+  ansible.builtin.file:
+    path: ~/cloudflare_ddns
+    state: directory
+    mode: '0700'
+- name: Fill config file and store it in folder
+  become: true
+  become_user: cloudflare_ddns
+  ansible.builtin.template:
+    src: ddns_config.ini.j2
+    dest: ~/cloudflare_ddns/ddns_config.ini
+    mode: '0600'
+- name: Install Cloudflare DDNS service file
+  become: true
+  ansible.builtin.template:
+    src: cloudflare_ddns.service
+    dest: /lib/systemd/system/
+    mode: '0644'
+- name: Install Cloudflare DDNS timer file
+  become: true
+  ansible.builtin.copy:
+    src: cloudflare_ddns.timer
+    dest: /lib/systemd/system/
+    mode: '0644'
+- name: Enable the newly added systemd timer
+  become: true
+  ansible.builtin.systemd_service:
+    daemon_reload: true
+    name: cloudflare_ddns.timer
+    state: started
+    enabled: true

roles/cloudflare-ddns/templates/cloudflare_ddns.service

@@ -0,0 +1,13 @@
+[Unit]
+Description=Cloudflare DDNS service
+Wants=network-online.target
+After=network-online.target
+
+[Service]
+Type=oneshot
+User=cloudflare_ddns
+Group=cloudflare_ddns
+ExecStart=/home/cloudflare_ddns/bin/cloudflare_ddns/cloudflare_ddns.sh {{ wireguard_address }}
+
+[Install]
+WantedBy=default.target

roles/cloudflare-ddns/templates/ddns_config.ini.j2

@@ -2,5 +2,4 @@
 dns_cloudflare_token = {{ dns_cloudflare_token }}
 
 [log_changes]
-# TODO: Update this...
-log_path = /home/thomas/repositories/raspberry-pi-iac/ddns_update.log
+log_path = /home/cloudflare_ddns/cloudflare_ddns/ddns_update.log

roles/cloudflare-ddns/vars/vault.yml

@@ -1,9 +1,11 @@
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