diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2e50a6c..d0277ee 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,10 @@ Which is based on [Keep A Changelog](http://keepachangelog.com/)
 
 ## [Unreleased]
 
+### Added
+
+add variable postrgresql_primary
+
 ## v1.0.0 - 2021-09-10
 
 - first version
diff --git a/README.md b/README.md
index 47556fd..73f9c5d 100644
--- a/README.md
+++ b/README.md
@@ -14,13 +14,14 @@ Install and configure Postgresql
 
 ## Role variables
 
-| Name                               | Type  | Required |Default | Comment                                                |
-|------------------------------------|-------|----------|--------|--------------------------------------------------------|
-| postgresql_version                 | str   | no       | 13     | the major version to use                               |
-| postgresql_use_official_repository | bool  | no       | false  | set to true if you want official postgresql repository |
-| postgresql_config                  | dict  | no       |        | add option config file                                 |
-| postgresql_databases               | array | no       |        | the database to manage                                 |
-| postgresql_users                   | array | no       |        | the users to manage                                    |
+| Name                               | Type  | Required |Default | Comment                                             |
+|------------------------------------|-------|----------|--------|-----------------------------------------------------|
+| postgresql_version                 | str   | no       | 13     | the major version to use                            |
+| postgresql_use_official_repository | bool  | no       | false  | set true if you want official postgresql repository |
+| postgresql_primary                 | bool  | no       | false  | set true to create user and database on this server |
+| postgresql_config                  | dict  | no       |        | add option config file                              |
+| postgresql_databases               | array | no       |        | the database to manage                              |
+| postgresql_users                   | array | no       |        | the users to manage                                 |
 
 ### postgresql_config
 
diff --git a/defaults/main.yml b/defaults/main.yml
index 0a9272e..5ce1eac 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -1,6 +1,7 @@
 ---
 postgresql_version: 13
 postgresql_use_official_repository: false
+postgresql_primary: false
 postgresql_databases: []
 postgresql_users: []
 postgresql_config: {}
diff --git a/molecule/default/converge.yml b/molecule/default/converge.yml
index b049584..7ef0ab6 100644
--- a/molecule/default/converge.yml
+++ b/molecule/default/converge.yml
@@ -5,6 +5,7 @@
     - ansible-role-postgresql
   vars:
     postgresql_use_official_repository: true
+    postgresql_primary: true
     postgresql_config:
       listen_addresses: '*'
     postgresql_hba:
diff --git a/tasks/main.yml b/tasks/main.yml
index e207a9d..0d4c548 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -51,6 +51,7 @@
   loop: '{{ postgresql_databases }}'
   become: true
   become_user: postgres
+  when: postgresql_primary
   tags: postgresql
 
 - name: manage users
@@ -65,4 +66,5 @@
     label: '{{ item.name }}/{{ item.database }}'
   become: true
   become_user: postgres
+  when: postgresql_primary
   tags: postgresql