using set_fact to remember launch and termination ids

playbooks/edx-east/edx_provision.yml

@@ -33,22 +33,14 @@
     # in as a -e variable
     - gh_users
   post_tasks:
-    - name: get instance id for elb registration
-      local_action:
-        module: ec2_lookup
-        region: us-east-1
-        tags:
-          Name: "{{ name_tag }}"
-      register: ec2_info
-      when: elb
-      sudo: False
     - name: register instance into an elb if one was provided
       local_action:
         module: ec2_elb
         region: "{{ region }}"
-        instance_id: "{{ ec2_info.instance_ids[0] }}"
+        instance_id: "{{ item }}"
         state: present
         ec2_elbs:
           - "{{ elb }}"
       when: elb
       sudo: False
+      with_items: "{{ launch_ids }}"

playbooks/roles/launch_ec2/tasks/main.yml

@@ -16,6 +16,11 @@
   debug: msg="Too many results returned, not terminating!"
   when: terminate_instance == true and tag_lookup.instance_ids|length > 1
 
+- name: launch_ec2 | remember the instance id of the terminated instance
+  set_fact:
+    termination_ids: ${tag_lookup.instance_ids}
+  when: terminate_instance == true
+
 - name: terminating single instance
   local_action:
     module: ec2
@@ -38,6 +43,10 @@
     zone: "{{ zone }}"
   register: ec2
 
+- name: launch_ec2 | remember the instance id of the launched instances
+  set_fact:
+    launch_ids: ${ec2.instances}
+
 - name: launch_ec2 | Add DNS name
   local_action:
     module: route53