feat: reduce max Journal size to 300MB and add handler to cleanup anything that is larger than that

defaults/main.yml

@@ -7,3 +7,5 @@ exim4_sendonly_username: ''
 exim4_sendonly_password: ''
 
 exim_name: "{{ 'exim4' if ansible_distribution == 'Debian' else 'exim' }}"
+
+journal_maxsize: "300M"

handlers/main.yml

@@ -57,6 +57,10 @@
     name: "systemd-journald"
     state: restarted
 
+- name: vacuum journal
+  ansible.builtin.command: journalctl --vacuum-size={{ journal_maxsize }}
+  changed_when: false
+
 - name: restart logrotate.service
   ansible.builtin.systemd:
     name: "logrotate.service"

tasks/configure_persistent_journald_logging.yml

@@ -25,11 +25,12 @@
         Compress=true
 
         # Controls how much disk space the journal may use up at most. (default: 10%)
-        SystemMaxUse=1G
+        SystemMaxUse={{ journal_maxsize }}
 
         # Controls how much disk space systemd-journald shall leave free for other uses. (default: 15%)
         # THIS DOES NOT WORK, HOWEVER: SystemKeepFree=15%
         SystemKeepFree=350M
   notify:
     - reload journald configuration
+    - vacuum journal
   when: ansible_facts.service_mgr == "systemd"

vars/main.yml

 ---
+journal_maxsize: "300M"