[CE-268] Derive AMI ID, allow custom Subnet/VPC

Change-Id: Ie1ecdabe40a780401d83cd5062f7a6037faa9cd0
Signed-off-by: Ben Leggett <benjamin.leggett1@t-mobile.com>

src/agent/ansible/roles/cloud_aws/prepare/tasks/apply.yml

@@ -4,6 +4,18 @@
     aws_usr_key: "{{ auth.username }}"
     aws_sec_key: "{{ auth.password }}"
 
+- name: Setup VPC filter if VPC ID defined
+  set_fact:
+    vpc_filters:
+      vpc-id: "{{ cluster.vpc_id }}"
+  when: cluster.vpc_id
+
+- name: Setup Subnet filter if Subnet ID defined
+  set_fact:
+    subnet_filters:
+      subnet-id: "{{ cluster.subnet_id }}"
+  when: cluster.subnet_id
+
 - name: Retrieve AWS specific image flavor
   ec2_ami_find:
     region: "{{ cluster.region_name }}"
@@ -38,6 +50,7 @@
     region: "{{ cluster.region_name }}"
     aws_access_key: "{{ aws_usr_key }}"
     aws_secret_key: "{{ aws_sec_key }}"
+    filters: "{{ vpc_filters | default(omit)}}"
   register: vpcnet
 
 - name: Create EC2 security group
@@ -73,6 +86,7 @@
     region: "{{ cluster.region_name }}"
     aws_access_key: "{{ aws_usr_key }}"
     aws_secret_key: "{{ aws_sec_key }}"
+    filters: "{{ subnet_filters | default(omit)}}"
   register: vpcsubnet
 
 - name: Add provisioning host group
@@ -81,6 +95,7 @@
     ansible_host: "127.0.0.1"
     subnet_id: "{{ vpcsubnet.subnets[0].id }}"
     sg_id: "{{ vpcsg.security_groups[0].group_id }}"
+    ami_id: "{{ (found_amis.results | first).ami_id }}"
     groups: "prohosts"
   with_sequence: count={{ cluster.stack_size }} format=%03x
   no_log: True

src/agent/ansible/roles/cloud_aws/provision/tasks/apply.yml

@@ -19,7 +19,7 @@
     key_name: "{{ cluster.ssh_key_name }}"
     validate_certs: "{{ cluster.validate_certs }}"
     group_id: "{{ sg_id }}"
-    image: "{{ cluster.image_id }}"
+    image: "{{ ami_id }}"
     instance_type: "{{ cluster.flavor_name }}"
     state: present
     user_data: "{{ lookup('template', tp_path) }}"

src/agent/ansible/vars/aws.yml

@@ -14,10 +14,10 @@ cluster: {
   region_name: "us-east-1",     #TODO  Dynamic fetch
   availability_zone: "", #TODO  Dynamic fetch based on region
   security_group: "Fabric",
-
+  subnet_id: "", #Optional, if unset will use the first subnet it finds
+  vpc_id: "", #Optional, if unset will use the default VPC
   target_os: "ubuntu",
   image_name: "ubuntu/images/hvm-ssd/ubuntu-xenial-16.04-amd64-*",
-  image_id: "ami-d15a75c7",
   flavor_name: "t2.medium",  # "m2.medium" is big enough for Fabric
   ssh_user: "ubuntu",
   validate_certs: True,