diff --git a/molecule/cluster/molecule.yml b/molecule/cluster/molecule.yml
index 4ec5970..2b6867f 100644
--- a/molecule/cluster/molecule.yml
+++ b/molecule/cluster/molecule.yml
@@ -56,8 +56,8 @@ provisioner:
       node3:
         mariadb_server_id: 3
   env:
-    ANSIBLE_DISPLAY_OK_HOSTS: "false"
     ANSIBLE_DISPLAY_SKIPPED_HOSTS: false
+    ANSIBLE_EXECUTABLE: /bin/bash
     ANSIBLE_FORCE_COLOR: true
     ANSIBLE_GATHERING: explicit
     ANSIBLE_ROLES_PATH: ../../..
diff --git a/molecule/cluster/verify.yml b/molecule/cluster/verify.yml
index 249a2a7..71ec861 100644
--- a/molecule/cluster/verify.yml
+++ b/molecule/cluster/verify.yml
@@ -22,12 +22,16 @@
   tasks:
     - name: Check that test db exist (created only on primary node)
       ansible.builtin.shell: |
+        set -o errexit
+        set -o pipefail
         mariadb -Bse 'SHOW DATABASES' | grep -q '^{{ item }}$'
       loop:
         - db
 
     - name: Get replica status
       ansible.builtin.shell: |
+        set -o errexit
+        set -o pipefail
         mariadb -Bse 'SHOW SLAVE STATUS\G'
       register: replica_status
 
diff --git a/molecule/default/molecule.yml b/molecule/default/molecule.yml
index 0e1a2a1..ffc1de2 100644
--- a/molecule/default/molecule.yml
+++ b/molecule/default/molecule.yml
@@ -13,8 +13,8 @@ platforms:
 provisioner:
   name: ansible
   env:
-    ANSIBLE_DISPLAY_OK_HOSTS: "false"
     ANSIBLE_DISPLAY_SKIPPED_HOSTS: false
+    ANSIBLE_EXECUTABLE: /bin/bash
     ANSIBLE_FORCE_COLOR: true
     ANSIBLE_GATHERING: explicit
     ANSIBLE_ROLES_PATH: ../../..
diff --git a/molecule/default/verify.yml b/molecule/default/verify.yml
index b14e510..19bee1a 100644
--- a/molecule/default/verify.yml
+++ b/molecule/default/verify.yml
@@ -49,26 +49,39 @@
       ansible.builtin.wait_for:
         port: 3306
         timeout: 2
+        msg: "MariaDB is not listening on port 127.0.0.1:3306"
 
     - name: Get MariaDB version
       ansible.builtin.shell: |
+        set -o errexit
+        set -o pipefail
         mariadb -Bse 'STATUS' | grep "^Server version:"
       register: version
-      when: lookup('env', 'MARIADB_VERSION') is true
+      when: lookup('env', 'MARIADB_VERSION') != ""
+
+    - name: Show MariaDB version
+      ansible.builtin.debug:
+        msg: "{{ version.stdout }}"
+      when: lookup('env', 'MARIADB_VERSION') != ""
 
     - name: Check MariaDB version
       ansible.builtin.assert:
         that:
-          - lookup('env', 'MARIADB_VERSION') in version.stdout
-        msg: "{{ version.stdout }}"
-      when: lookup('env', 'MARIADB_VERSION') is true
+          - "lookup('env', 'MARIADB_VERSION') in version.stdout"
+        fail_msg: "{{ version.stdout }}"
+        success_msg: "{{ version.stdout }}"
+      when: lookup('env', 'MARIADB_VERSION') != ""
 
     - name: Check that Innodb engine is enabled (and default)
       ansible.builtin.shell: |
+        set -o errexit
+        set -o pipefail
         mariadb -Bse 'SHOW ENGINES' | grep -qE '^InnoDB.DEFAULT.*YES.YES.YES$'
 
     - name: Check that default db exist
       ansible.builtin.shell: |
+        set -o errexit
+        set -o pipefail
         mariadb -Bse 'SHOW DATABASES' | grep -q '^{{ item }}$'
       loop:
         - mysql
@@ -77,6 +90,8 @@
 
     - name: Check that test db exist
       ansible.builtin.shell: |
+        set -o errexit
+        set -o pipefail
         mariadb -Bse 'SHOW DATABASES' | grep -q '^{{ item }}$'
       loop:
         - db1
@@ -84,6 +99,8 @@
 
     - name: Check that test users exist
       ansible.builtin.shell: |
+        set -o errexit
+        set -o pipefail
         mariadb -Bse 'SELECT user from mysql.user' | grep -q '^{{ item }}$'
       loop:
         - user1