first commit!
diff --git a/cvp_checks/tests/test_galera_cluster.py b/cvp_checks/tests/test_galera_cluster.py
new file mode 100644
index 0000000..d2b2d5f
--- /dev/null
+++ b/cvp_checks/tests/test_galera_cluster.py
@@ -0,0 +1,17 @@
+def test_galera_cluster_status(local_salt_client):
+    gs = local_salt_client.cmd(
+        'I@galera:*',
+        'cmd.run',
+        ['salt-call mysql.status | grep -A1 wsrep_cluster_size | tail -n1'],
+        expr_form='pillar')
+
+    size_cluster = []
+    amount = len(gs)
+
+    for item in gs.values():
+        size_cluster.append(item.split('\n')[-1].strip())
+
+    assert all(item == str(amount) for item in size_cluster), \
+        '''There found inconsistency within cloud. MySQL galera cluster
+              is probably broken, the cluster size gathered from nodes:
+              {}'''.format(gs)