roles/common_healthcheck/tasks/main.yaml

@@ -23,8 +23,8 @@
       become: false
       # We have to use this complicated pipeline because of Alpine and its wierd df implementation
       ansible.builtin.shell: set -o pipefail && df -h / | tail -1 | awk '{gsub(/%/, "", $5); print $5}'
-      register: free_disk_space_result
-      failed_when: free_disk_space_result.stdout | int > 85
+      register: common_healthcheck_space_left_result
+      failed_when: common_healthcheck_space_left_result.stdout | int > 85
       changed_when: false   # This task does not change the system
 
   rescue:
@@ -41,5 +41,9 @@
         body:
           - "{{ ansible_facts['hostname'] }}: Disk space is low"
       delegate_to: 127.0.0.1
-      failed_when: false
+      failed_when: false    # It's OK if it fails, not critical
       changed_when: false   # This task does not change the system
+
+    - name: Resize rootfs if it's an LXC
+      ansible.builtin.include_tasks: resize_lxc_rootfs.yaml
+      when: ansible_virtualization_type == 'lxc'

roles/common_healthcheck/tasks/resize_lxc_rootfs.yaml

@@ -0,0 +1,22 @@
+---
+- name: Get container info by name
+  delegate_to: localhost
+  become: false
+  community.general.proxmox_vm_info:
+    validate_certs: false
+    node: proxmox-server
+    api_user: root@pam
+    api_host: 192.168.0.2
+    api_token_id: ansible
+    api_token_secret: "{{ proxmox_token_secret }}"
+
+    name: "{{ inventory_hostname }}"
+    type: lxc
+  register: common_healthcheck_vmid
+
+- name: Resize LXC's rootfs
+  become: true
+  ansible.builtin.command:
+    cmd: pct resize {{ common_healthcheck_vmid.proxmox_vms[0].vmid }} rootfs +5G
+  delegate_to: 192.168.0.2
+  changed_when: true