select available zone

tests/integration/targets/ec2_instance_placement_options/tasks/main.yml

@@ -47,6 +47,8 @@
     # - instance_creation is failed
     # - '"You are not authorized to perform this operation." in instance_creation.msg'
 
+    - ansible.builtin.include_tasks: select_availability_zone.yml
+
     - name: New instance with dedicated tenancy
       amazon.aws.ec2_instance:
         state: running
@@ -58,7 +60,7 @@
           TestId: "{{ ec2_instance_tag_TestId }}"
         security_group: default
         instance_type: "{{ ec2_instance_type }}"
-        availability_zone: us-east-1c
+        availability_zone: "{{ ec2_availability_zone }}"
         wait: true
       ignore_errors: true
       register: instance_creation

tests/integration/targets/ec2_instance_placement_options/tasks/select_availability_zone.yml

@@ -0,0 +1,21 @@
+- name: List available AZs in current Region
+  amazon.aws.aws_az_info:
+  register: region_azs
+
+- ansible.builtin.set_fact:
+    av_zones: "{{ region_azs.availability_zones | map(attribute='zone_name') | list }}"
+
+- name: List t3.micro instances
+  amazon.aws.ec2_instance_info:
+    filters:
+      instance-type: t3.micro
+      instance-state-name:
+        - pending
+        - running
+  register: _instances
+
+- ansible.builtin.set_fact:
+    instances_zones: "{{ _instances.instances | map(attribute='placement.availability_zone') | list }}"
+
+- ansible.builtin.set_fact:
+    ec2_availability_zone: "{{ av_zones | ansible.builtin.difference(instances_zones) | list | ansible.builtin.random }}"