diff --git a/defaults/main.yml b/defaults/main.yml
new file mode 100644
index 0000000..6b75479
--- /dev/null
+++ b/defaults/main.yml
@@ -0,0 +1,9 @@
+---
+mongodb_version: 3.6
+mongodb_system_user: mongod
+mongodb_system_group: mongod
+mongodb_storage_dbpath: 
+
+
+# mongodb_system_gid: omit
+# mongodb_system_uid: omit
diff --git a/handlers/main.yml b/handlers/main.yml
index 6b9ca07..d5760a6 100644
--- a/handlers/main.yml
+++ b/handlers/main.yml
@@ -1,9 +1,8 @@
 ---
-- name: Restart mongodb
+- name: Restart mongod service
   systemd:
     name: mongod
     state: restarted
     enabled: yes
     daemon_reload: yes
-  listen:
-    - "mongod_restart"
+  listen: __mongod_restart
diff --git a/tasks/install.yml b/tasks/install.yml
index 6f860e7..981472e 100644
--- a/tasks/install.yml
+++ b/tasks/install.yml
@@ -1,28 +1,46 @@
 ---
 - block:
-    - name: Add mongodb repo
+    - name: Add repository for major version '{{ mongodb_version }}'
       yum_repository:
-        name: mongodb-org-3.4
+        name: mongodb
         description: MongoDB Repository
-        baseurl: https://repo.mongodb.org/yum/redhat/$releasever/mongodb-org/3.4/x86_64/
+        baseurl: "https://repo.mongodb.org/yum/redhat/$releasever/mongodb-org/{{ mongodb_version }}/x86_64/"
         gpgcheck: yes
         enabled: yes
-        gpgkey: https://www.mongodb.org/static/pgp/server-3.4.asc
-      notify:
-        - mongod_restart
+        gpgkey: "https://www.mongodb.org/static/pgp/server-{{ mongodb_version }}.asc"
 
-    - name: Install mongodb package
+    - name: Install package
       package:
         name: mongodb-org
-        state: latest
-      notify:
-        - mongod_restart
+        state: present
 
-    - name: Make sure mongodb is running
-      systemd:
-        name: mongod
-        state: started
-        enabled: yes
-        daemon_reload: yes
+    # - name: Create system group '{{ mongodb_system_group }}'
+    #   group:
+    #     name: "{{ mongodb_system_group }}"
+    #     gid: "{{ mongodb_system_gid | default(omit) }}"
+    #     state: present
+    #
+    # - name: Create system user '{{ mongodb_system_user }}'
+    #   user:
+    #     name: "{{ mongodb_system_user }}"
+    #     uid: "{{ mongodb_system_uid | default(omit) }}"
+    #     group: "{{ mongodb_system_group }}"
+    #   notify: __mongod_restart
+    #
+    # - name: Create db storage dir at '{{ mongodb_storage_dbpath }}'
+    #   file:
+    #     path: "{{ mongodb_storage_dbpath }}"
+    #     owner: "{{ mongodb_system_user }}"
+    #     group: "{{ mongodb_system_group }}"
+    #     follow: yes
+    #     recurse: yes
+    #     state: directory
+    #
+    # - name: Make sure mongodb is running
+    #   systemd:
+    #     name: mongod
+    #     state: started
+    #     enabled: yes
+    #     daemon_reload: yes
   become: True
   become_user: root