monit : Add smart checks to monit

monit/defaults/main.yml

 monit_emails:  []
 monit_email_from: monit@example.com
-monit_cycle_duration: 15
+monit_cycle_duration: 60
 monit_enabled_modules: []
\ No newline at end of file

monit/files/scripts/sdahealth.sh

+#!/bin/sh -e
+# source https://www.smarthomebeginner.com/monit-monitor-hard-drive-smart-health-and-temperature/
+STATUS=`/usr/sbin/smartctl -H /dev/sda | grep overall-health | awk 'match($0,"result:"){print substr($0,RSTART+8,6)}'`
+#echo $STATUS
+
+if [ "$STATUS" = "PASSED" ]
+then
+    # 0 implies PASSED
+    TP=0
+else
+    # 1 implies FAILED
+    TP=1
+fi
+#echo $TP # for debug only
+
+# Enable offline data collection (idempotent)
+/usr/sbin/smartctl --smart=on --offlineauto=on --saveauto=on /dev/sda > /dev/null 2>&1
+
+exit $TP

monit/files/scripts/sdatemp.sh

+#!/bin/sh -e
+# source https://www.smarthomebeginner.com/monit-monitor-hard-drive-smart-health-and-temperature/
+HDDTP=`/usr/sbin/smartctl -a /dev/sda | grep Temp | awk -F " " '{printf "%d",$10}'`
+#echo $HDDTP # for debug only
+exit $HDDTP

monit/tasks/main.yml

 - name: Install apt package
   apt: pkg=monit update_cache=yes cache_valid_time=1800
 
+- import_tasks: smart.yml
+
 - name: Deploy monitrc configuration
   template:
     src: monitrc.j2
     dest: /etc/monit/monitrc
   notify: restart monit
 
+- name: Create custom monit scripts dir
+  file:
+    path: /etc/monit/scripts
+    state: directory
+
+- name: Deploy custom monit scripts
+  copy:
+    src: "scripts/"
+    dest: "/etc/monit/scripts/"
+    mode: 0755
+
 - name: Enable monit modules
   template:
     src: "custom-modules/{{ item }}.j2"
     dest: "/etc/monit/conf.d/{{ item }}"
   with_items: "{{ monit_enabled_modules }}"
-  notify: restart monit
\ No newline at end of file
+  notify: restart monit

monit/tasks/smart.yml

+- name: Install apt package
+  apt: pkg=smartmontools update_cache=yes cache_valid_time=1800

monit/templates/custom-modules/smart.j2

+# Temperature
+check program HDD-Temp with path "/etc/monit/scripts/sdatemp.sh"
+    every 5 cycles
+    if status > 40 for 2 cycles then alert
+    group health
+
+
+# SMART Overall Health
+check program SSD-Health with path "/etc/monit/scripts/sdahealth.sh"
+    every 30 cycles
+    if status != 0 for 2 cycles then alert
+    group health