Parallel execution of common tasks

ansible/roles/common/tasks/slaves.yml → ansible/roles/common/tasks/all.yml

 ---
   - name: Create users for each application.
     include: users.yml
+    when: "'slaves' in group_names"
 
   - name: Include common tasks.
     include: common-1.yml

ansible/roles/common/tasks/main.yml

@@ -5,8 +5,7 @@
     tags:
       - master
 
-  - name: Include tasks for slaves.
-    include: slaves.yml
-    when: "'slaves' in group_names"
+  - name: Include tasks for all nodes.
+    include: all.yml
     tags:
-      - slaves
+      - all

ansible/roles/common/tasks/master.yml

@@ -2,9 +2,6 @@
   - name: Create users for each application.
     include: users.yml
 
-  - name: Include common tasks.
-    include: common-1.yml
-
 #  - name: Generate ssh key for root.
 #    shell: cat /dev/zero | ssh-keygen -q -N ""
 #    args:
@@ -37,6 +34,3 @@
 
   - name: Set up ssh config for flink user.
     template: src=ssh-config.j2 dest=/home/flink/.ssh/config owner=flink group=lambda mode=600
-
-  - name: Include more common tasks.
-    include: common-2.yml

core/fokia/cluster_creator.py

@@ -13,7 +13,7 @@ if __name__ == "__main__":
     parser.add_argument('--name', type=str, dest='name', default="to mikro debian sto livadi")
 
 
-    parser.add_argument('--slaves', type=int, dest='slaves', default=3)
+    parser.add_argument('--slaves', type=int, dest='slaves', default=2)
     parser.add_argument('--vcpus_master', type=int, dest='vcpus_master', default=4)
     parser.add_argument('--vcpus_slave', type=int, dest='vcpus_slave', default=4)
     parser.add_argument('--ram_master', type=int, dest='ram_master', default=4096)  # in MB