diff --git a/roles/instance-ha/tasks/main.yml b/roles/instance-ha/tasks/main.yml
index 45e9a0e..cc8694c 100644
--- a/roles/instance-ha/tasks/main.yml
+++ b/roles/instance-ha/tasks/main.yml
@@ -1,4 +1,9 @@
 ---
+- name: Check if Instance HA steps were already applied
+  include: pre-checks.yml
+  when:
+    - instance_ha_action == "install"
+
 - name: Apply STONITH for controller nodes
   include_role:
     name: stonith-config
diff --git a/roles/instance-ha/tasks/pre-checks.yml b/roles/instance-ha/tasks/pre-checks.yml
new file mode 100644
index 0000000..1111097
--- /dev/null
+++ b/roles/instance-ha/tasks/pre-checks.yml
@@ -0,0 +1,25 @@
+---
+- block:
+  - name: Check if STONITH resources already exist
+    shell: |
+      pcs stonith show | grep {{ item }}
+    with_items:
+      - fence-nova
+    register: pre_existing_stonith
+    failed_when: pre_existing_stonith.rc == 0
+
+  - name: Check if IHA resources already exist
+    shell: |
+      pcs resource show | grep "{{ item }}"
+    with_items:
+      - compute-unfence-trigger
+      - nova-compute-checkevacuate
+      - nova-compute
+      - nova-evacuate
+      - neutron-openvswitch-agent-compute
+      - libvirtd-compute
+      - ceilometer-compute
+    register: pre_existing_resources
+    failed_when: pre_existing_resources.rc == 0
+  become: yes
+  delegate_to: "{{ groups.controller[0] }}"