Initial bring up of monit role

playbook-frames.yml

@@ -4,3 +4,4 @@
     roles:
       - msmtp
       - hdmi
+      - monit

roles/monit/defaults/main.yml

@@ -0,0 +1,18 @@
+---
+
+# Notifiation email setup
+monit_notification_email: "user@domain.tld"
+monit_smtp_server: "mail.domain.tld"
+monit_smtp_user: "user@domain.tld"
+monit_smtp_password: "password"
+
+# Filesystems to monitor
+monit_filesystems:
+  - { name: "rootfs", path: "/", alert: "80%" }
+
+# Monitor WireGuard?
+monit_wireguard: true
+
+# Username / password for monit web service
+monit_web_user: "admin"
+monit_web_pasword: "password"

roles/monit/tasks/main.yml

@@ -0,0 +1,31 @@
+---
+  - name: Gather instance facts
+    setup:
+  - name: Update APT package cache
+    apt:
+      update_cache: "true"
+      cache_valid_time: "3600"
+    tags:
+        - monit-install
+  - name: Install monit
+    package:
+      name: "{{ packages }}"
+      state: present
+    vars:
+      packages:
+        - monit
+    tags:
+      - monit-install
+  - block:
+    - name: Setup filesystem monitoring
+      template:
+        src: filesystem
+        dest: "/etc/monit/conf.d/{{item.name}}"
+        owner: root
+        group: root
+        mode: 0644
+      loop:
+        {{ monit_filesystems }}
+      tags:
+        - monit-config
+        - monit-filesystems

roles/monit/templates/filesystem

@@ -0,0 +1,2 @@
+check filesystem {{ item.name }} with path {{ item.path }}
+    if space usage > {{ item.alert }} then alert

roles/monit/templates/monitrc

@@ -0,0 +1,15 @@
+set log /var/log/monit.log
+set idfile /var/lib/monit/id
+set statefile /var/lib/monit/state
+set eventqueue
+
+set mailserver {{ monit_smtp_server }} port 587
+    username "{{ monit_smtp_user }}" password "{{ monit_smtp_password }}"
+    using tls
+
+set httpd port 2812 and
+        use address 0.0.0.0
+        allow {{ monit_web_user }}:{{ monit_web_pasword }}
+
+include /etc/monit/conf.d/*
+include /etc/monit/conf-enabled/*