diff --git a/README.md b/README.md
index 7422d7e..3c5dac8 100644
--- a/README.md
+++ b/README.md
@@ -12,13 +12,34 @@ It has been tested on :
 Role variables
 --------------
 
-| Variable                           | Type    | Choices      | Default                                                                       | Comment                                                                    |
-|------------------------------------|---------|--------------|-------------------------------------------------------------------------------|----------------------------------------------------------------------------|
+| Variable                                     | Type    | Choices                              | Default     | Comment         |
+|----------------------------------------------|---------|--------------------------------------|-------------|-----------------|
+| prometheus_server_enable                     | string  | true / false                         |             |                 |
+| prometheus_server_version                    | string  |                                      |  latest     |                 |
+| prometheus_server_monitor                    | string  |                                      |             |                 |
+| prometheus_server_global_scrape_interval     | string  |                                      |  15         |                 |
+| prometheus_server_global_evaluation_interval | string  |                                      |  15         |                 |
+| prometheus_server_job_name                   | string  |                                      |  prometheus |                 |
+| prometheus_server_scrape_interval            | string  |                                      |  5          |                 |
+| prometheus_server_scrape_timeout             | string  |                                      |  5          |                 |
+| prometheus_exporter_packages                 | list    | node / mysqld / postgresql / mongodb |             |                 |
+| prometheus_node_exporter_targets             | list    |                                      |             |                 |
+| prometheus_mysqld_exporter_targets           | list    |                                      |             |                 |
+| prometheus_mongodb_exporter_targets          | list    |                                      |             |                 |
+| prometheus_postgres_exporter_targets         | list    |                                      |             |                 |
+| prometheus_mysqld_exporter_user              | string  |                                      |             |                 |
+| prometheus_mysqld_exporter_password          | string  |                                      |             |                 |
+| prometheus_mongodb_exporter_host             | string  |                                      | localhost   |                 |
+| prometheus_mongodb_exporter_port             | string  |                                      | 27017       |                 |
+| prometheus_mongodb_exporter_user             | string  |                                      |             |                 |
+| prometheus_mongodb_exporter_pass             | string  |                                      |             |                 |
+| prometheus_server_version                    | string  |                                      |  latest     |                 |
 
 Dependencies
 ------------
 
-Docker must installed and running.
+  - jq
+  - Docker must installed and running for prometheus server
 
 Example Playbook
 ----------------
@@ -32,13 +53,24 @@ Example Playbook
 Example variables
 -----------------
 
-    --- 
-    prometheus_enable: 'true'
-    prometheus_node_exporter_enable: 'true'
-    prometheus_mysqld_exporter_enable: 'true'
+    ---
+    prometheus_server_enable: 'true'
+    prometheus_server_monitor: 'example'
+
+    prometheus_exporter_packages:
+      - node
+      - mysqld
+
     prometheus_mysqld_exporter_user: 'foo'
     prometheus_mysqld_exporter_password: 'bar'
 
+    prometheus_node_exporter_targets:
+      - server01
+      - server02
+
+    prometheus_mysqld_exporter_targets:
+      - server01
+
 TODO
 ----