Fix health check: RAM formula, exclude snap/overlay, use ASCII output

playbooks/health_check.yml

@@ -28,32 +28,32 @@
   gather_facts: true
 
   tasks:
-    - name: Get disk usage
-      ansible.builtin.shell: df -h --output=target,size,used,avail,pcent -x tmpfs -x devtmpfs | tail -n +2
+    - name: Get disk usage (excluding snap, overlay, tmpfs)
+      ansible.builtin.shell: df -h --output=target,size,used,avail,pcent -x tmpfs -x devtmpfs -x squashfs -x overlay | tail -n +2
       register: disk_usage
       changed_when: false
 
-    - name: Calculate memory percentage
+    - name: Calculate memory usage
       ansible.builtin.set_fact:
         mem_total_mb: "{{ ansible_memtotal_mb }}"
-        mem_used_mb: "{{ ansible_memtotal_mb - ansible_memfree_mb - (ansible_memory_mb.nocache.free | default(0)) }}"
-        mem_pct: "{{ (((ansible_memtotal_mb - ansible_memfree_mb) / ansible_memtotal_mb) * 100) | round(1) }}"
+        mem_used_mb: "{{ ansible_memory_mb.real.used }}"
+        mem_pct: "{{ ((ansible_memory_mb.real.used / ansible_memtotal_mb) * 100) | round(1) }}"
         swap_total_mb: "{{ ansible_swaptotal_mb }}"
         swap_used_mb: "{{ ansible_swaptotal_mb - ansible_swapfree_mb }}"
 
     - name: Print report
       ansible.builtin.debug:
         msg: |
-          ══════════════════════════════════════════════════════
+          ======================================================
            HOST: {{ inventory_hostname }} ({{ ansible_host }})
            OS:   {{ ansible_distribution }} {{ ansible_distribution_version }}
-          ═���════════════════════════════════════════════════════
+          ======================================================
            RAM:  {{ mem_used_mb }}MB / {{ mem_total_mb }}MB ({{ mem_pct }}%)
            SWAP: {{ swap_used_mb }}MB / {{ swap_total_mb }}MB
-          ────���─────────────────────────────────��───────────────
-           DISK USAGE:
+          ------------------------------------------------------
+           DISK:
           {{ disk_usage.stdout }}
-          ══════════════════════════════════════════════════════
+          ======================================================
 
     - name: Warn on high disk usage (>85%)
       ansible.builtin.debug: