Merge pull request #79 from Ragilo/systemd_fix_debian12

Added python3-systemd as a dependency for systemd backend

README.md

@@ -23,7 +23,7 @@ None
 - `fail2ban_bantime`: [default: `600`]: Sets the bantime
 - `fail2ban_maxretry`: [default: `3`]: Maximum number of retries before the host is put into jail
 - `fail2ban_findtime`: [default: `600`]: A host is banned if it has generated `fail2ban_maxretry` during the last `fail2ban_findtime`
-- `fail2ban_backend`: [default: `auto`]: Specifies the backend used to get files modification
+- `fail2ban_backend`: [default: `auto`]: Specifies the backend used to get files modification. For Debian 12, `systemd` is required.
 - `fail2ban_banaction`: [default: `iptables-multiport`]: Sets the global/default banaction
 - `fail2ban_banaction_allports`: [default: `iptables-allports`]: Sets the global/default banaction for allports
 - `fail2ban_mta`: [default: `sendmail`]: Email action

tasks/main.yml

@@ -11,6 +11,18 @@
     - fail2ban
     - fail2ban-install
 
+- name: Install python3-systemd for systemd backend
+  ansible.builtin.apt:
+    name: python3-systemd
+    state: "{{ apt_install_state | default('latest') }}"
+    update_cache: true
+    cache_valid_time: "{{ apt_update_cache_valid_time | default(3600) }}"
+  when: fail2ban_backend == 'systemd'
+  tags:
+    - configuration
+    - fail2ban
+    - fail2ban-install
+
 - name: get fail2ban version
   ansible.builtin.command: >
     fail2ban-server -V