EC2 dynamic enventory. Fixes #73

config.cfg

@@ -58,3 +58,10 @@ SSH_keys:
   comment: algo@ssh
   private: configs/algo.pem
   public: configs/algo.pem.pub
+
+dynamic_inventory_groups:
+  - azure
+  - digitalocean
+  - ec2
+  - gce
+  - local

playbooks/local.yml

@@ -12,3 +12,14 @@
 
 - name: Change mode for the SSH private key
   local_action: file path=configs/algo.pem mode=0600
+
+- name: Ensure the dynamic inventory exists
+  blockinfile:
+    dest: configs/inventory.dynamic
+    marker: "# {mark} ALGO MANAGED BLOCK"
+    create: yes
+    block: |
+      [algo:children]
+      {% for group in dynamic_inventory_groups %}
+      {{ group }}
+      {% endfor %}

roles/cloud-ec2/tasks/main.yml

@@ -96,6 +96,7 @@
     region: "{{ region }}"
     instance_tags:
       name: "{{ aws_server_name }}"
+      Environment: Algo
     exact_count: 1
     count_tag:
       name: "{{ aws_server_name }}"
@@ -115,3 +116,29 @@
 
 - set_fact:
     cloud_instance_ip: "{{ ec2.tagged_instances[0].public_ip }}"
+
+- name: Get EC2 instances
+  ec2_remote_facts:
+    aws_access_key: "{{ aws_access_key | default(lookup('env','AWS_ACCESS_KEY_ID'))}}"
+    aws_secret_key: "{{ aws_secret_key | default(lookup('env','AWS_SECRET_ACCESS_KEY'))}}"
+    region: "{{ region }}"
+    filters:
+      instance-state-name: running
+      "tag:Environment": Algo
+  register: algo_instances
+
+- name: Ensure the group ec2 exists in the dynamic inventory file
+  lineinfile:
+    state: present
+    dest: configs/inventory.dynamic
+    line: '[ec2]'
+
+- name: Populate the dynamic inventory
+  lineinfile:
+    state: present
+    dest: configs/inventory.dynamic
+    insertafter: '\[ec2\]'
+    regexp: "^{{ item.public_ip_address }}.*"
+    line: "{{ item.public_ip_address }}"
+  with_items:
+    - "{{ algo_instances.instances }}"