Announce first avahi service

README.md

@@ -1,2 +1,27 @@
 # ansible_role_template
 Template for Ansible roles
+
+Netfilter rules
+---------------
+
+Do not forget to add netfilter rules for multicast dns.
+
+Configuration example for `ferm`:
+
+```
+# mdns
+daddr 224.0.0.251 proto udp dport 5353 ACCEPT;
+daddr ff02::fb proto udp dport 5353 ACCEPT;
+```
+
+
+Links
+-----
+
+* http://dns-sd.org/
+* http://www.multicastdns.org/
+
+* https://www.avahi.org/
+* https://github.com/lathiat/avahi
+
+* http://www.dns-sd.org/ServiceTypes.html

defaults/main.yml

@@ -1,10 +1,16 @@
 ---
-avahi_packages:
-  - 'avahi-daemon'
-  - 'avahi-utils'
-  #- 'avahi-discover'
-  #- 'mdns-scan'
-
+avahi_services:
+  - service: 'SSH'
+    port: 22
+  # - service: 'NFS'
+  #   port: 2049
+  #   extra: '<txt-record>path=/path/to/nfsexport</txt-record>'
+  # - service: 'FTP'
+  #   port: '21'
+  #   extra: |
+  #     <txt-record>path=/ftppath</txt-record>
+  #     <txt-record>u=ftpuser</txt-record>
+  #     <txt-record>p=ftppass</txt-record>
 
 # should we do a version check? (recomended)
 submodules_versioncheck: false

handlers/main.yml

@@ -0,0 +1,6 @@
+---
+- name: systemctl restart avahi-daemon.service
+  become: true
+  ansible.builtin.systemd:
+    name: avahi-daemon.service
+    state: restarted

tasks/avahi-services.yml

@@ -0,0 +1,11 @@
+---
+- name: Copy configured avahi services
+  ansible.builtin.template:
+    src: 'templates/avahi.service.j2'
+    dest: "/etc/avahi/services/{{ item.service | lower }}.service"
+    owner: root
+    group: root
+    mode: 'u=rw,g=r,o=r'
+  notify:
+    - systemctl restart avahi-daemon.service
+  with_items: "{{ avahi_services }}"

tasks/main.yml

@@ -11,3 +11,10 @@
 
 - name: install avahi requirements
   ansible.builtin.include_tasks: install.yml
+
+- debug:
+    msg: "{{ item }}"
+  with_items: "{{ avahi_services }}"
+
+- name: optionally announce avahi services
+  ansible.builtin.include_tasks: avahi-services.yml

templates/avahi.service.j2

@@ -0,0 +1,12 @@
+<?xml version="1.0" standalone='no'?>
+<!DOCTYPE service-group SYSTEM "avahi-service.dtd">
+<service-group>
+  <name replace-wildcards="yes">{{ item.service | upper }} server at %h</name>
+  <service>
+    <type>_{{ item.service | lower }}._tcp</type>
+    <port>{{ item.port | string }}</port>
+{% if item.extra is defined %}
+    {{ item.extra }}
+{% endif %}
+  </service>
+</service-group>

vars/main.yml

@@ -1,4 +1,4 @@
 ---
 # versionscheck
-playbook_version_number: 3
+playbook_version_number: 4
 playbook_version_path: 'do1jlr.avahi_daemon.version'