last_leader_operation is the propery of Cluster object and the value is set in get_cluster method

helpers/etcd.py

@@ -92,6 +92,7 @@ class Etcd:
                     node = self.find_node(node, '/leader')
                     if node:
                         last_leader_operation = int(node['value'])
+                        print(last_leader_operation)
 
                 # get leader
                 leader = None

helpers/postgresql.py

@@ -79,7 +79,7 @@ class Postgresql:
         return not os.path.exists(self.data_dir) or os.listdir(self.data_dir) == []
 
     def initialize(self):
-        if os.system(self._pg_ctl + ' initdb') == 0:
+        if os.system(self._pg_ctl + ' initdb -o --encoding=UTF8') == 0:
             self.write_pg_hba()
 
             return True