diff --git a/remount.yml b/remount.yml
new file mode 100644
index 0000000..74d3539
--- /dev/null
+++ b/remount.yml
@@ -0,0 +1,20 @@
+- hosts: all
+  gather_facts: true
+  vars:
+    remount_state: ro
+    remount_fs:
+    - /
+    - /usr
+    - /opt
+  tasks:
+  - name: remount filesystems
+    command:
+      mount -oremount,{{ remount_state }} {{ item }}
+      warn=false
+    with_items: >-
+      {{
+      ansible_mounts
+         | selectattr('mount', 'in', remount_fs)
+         | map(attribute='mount')
+         | list
+      }}