diff --git a/defaults/main.yml b/defaults/main.yml
index 3acb4db..49e505f 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -14,6 +14,8 @@ cdh_csd_directory: /opt/cloudera/csd
 cdh_oozie_server: False
 cdh_oozie_ext_libs_url: 'https://archive.cloudera.com/gplextras/misc/ext-2.2.zip'
 
+cdh_impala_haproxy: False
+
 cdh_use_separate_postgres_db: True
 cdh_postgres_db_host: localhost
 cdh_postgres_db_name: cdh
diff --git a/meta/main.yml b/meta/main.yml
index da5239b..69ed71b 100644
--- a/meta/main.yml
+++ b/meta/main.yml
@@ -30,7 +30,9 @@ dependencies:
     version: master
     name: nginx
     state: latest
+    when: nginx_setup
   - src: git+https://gitea-s2i2s.isti.cnr.it/ISTI-ansible-roles/ansible-role-haproxy.git
     version: master
     name: haproxy
     state: latest
+    when: cdh_impala_haproxy