diff --git a/hadoop/CDH/defaults/main.yml b/hadoop/CDH/defaults/main.yml
index 50310cf4..f11b270e 100644
--- a/hadoop/CDH/defaults/main.yml
+++ b/hadoop/CDH/defaults/main.yml
@@ -6,6 +6,10 @@ cdh_packages_repo: 'deb [arch=amd64] http://archive.cloudera.com/cm5/ubuntu/trus
 cdh_manager_repo_url: 'https://archive.cloudera.com/cdh5/ubuntu/trusty/amd64/cdh/cloudera.list'
 #cdh_manager_download_url: 'http://archive.cloudera.com/cm5/installer/5.9.3/cloudera-manager-installer.bin'
 
+# Set it to true on the oozie server nodes
+cdh_oozie_server: False
+cdh_oozie_ext_libs_url: 'https://archive.cloudera.com/gplextras/misc/ext-2.2.zip'
+
 cdh_use_separate_postgres_db: True
 cdh_postgres_db_host: localhost
 cdh_postgres_db_name: cdh
@@ -13,3 +17,11 @@ cdh_postgres_db_user: cdh
 cdh_postgres_db_schema: cdh
 cdh_postgresql_version: 9.4
 postgresql_jdbc_driver_version: 42.1.4
+
+###
+# Spark2: the installation is completely manual, see
+#  https://www.cloudera.com/documentation/spark2/latest/topics/spark2_installing.html
+#
+# To integrate spark2 and oozie:
+# https://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.6.0/bk_spark-component-guide/content/ch_oozie-spark-action.html#spark-config-oozie-spark2
+# https://community.cloudera.com/t5/Advanced-Analytics-Apache-Spark/Spark2-classpath-issues-with-Oozie/td-p/59782
diff --git a/hadoop/CDH/tasks/main.yml b/hadoop/CDH/tasks/main.yml
index 906262fd..0be91cad 100644
--- a/hadoop/CDH/tasks/main.yml
+++ b/hadoop/CDH/tasks/main.yml
@@ -32,3 +32,11 @@
   when: cdh_manager_install
   tags: [ 'cdh', 'hadoop', 'cdh_manager', 'cdh_pg' ]
 
+- block:
+    - name: Get the Oozie ext libraries needed to activate the web console
+      unarchive: remote_src=yes src={{ cdh_oozie_ext_libs_url }} dest=/var/lib/oozie owner=oozie group=oozie
+      args:
+        creates: /var/lib/oozie/ext2.2
+
+  when: cdh_oozie_server
+  tags: [ 'cdh', 'hadoop', 'cdh_manager', 'oozie' ]