task.yml

- name: Create new Elastic Search  load balancer if it doesn't exists
  ec2_elb_lb:
    name: "{{ elb_name }}"
    state: present
    region: "{{aws_region}}"
    scheme: internal
    subnets:
      - "{{ elb_subnet_1 }}"
      - "{{ elb_subnet_2 }}"
      - "{{ elb_subnet_3 }}"
    security_group_ids: "{{vpc_sg}}"
    listeners:
      - protocol: tcp
      - load_balancer_port: 9600
      - instance_port: 9600    
    stickiness:
      type: loadbalancer
      enabled: yes
      expiration: 300
    access_logs:
      interval: 5 # minutes (defaults to 60)
      s3_location: "{{ lb_log_location }}" # This value is required if access_logs is set
      s3_prefix: "logstash"
    cross_az_load_balancing: "yes"
  # when:  ' "{{lb_name}}" != "{{ elb_name }}" '
  when: elb_name_output is undefined

The error msg that I get is this:

TASK [aws.instance : Create new Elastic Search  load balancer if it doesn't exists] ***
An exception occurred during task execution. To see the full traceback, use -vvv. The error was: KeyError: 'load_balancer_port'
fatal: [localhost]: FAILED! => {"changed": false, "failed": true, "module_stderr": "Traceback (most recent call last):\n  File \"/tmp/ansible_WObIqE/ansible_module_ec2_elb_lb.py\", line 1359, in <module>\n    main()\n  File \"/tmp/ansible_WObIqE/ansible_module_ec2_elb_lb.py\", line 1346, in main\n    elb_man.ensure_ok()\n  File \"/tmp/ansible_WObIqE/ansible_module_ec2_elb_lb.py\", line 418, in _do_op\n    return op(*args, **kwargs)\n  File \"/tmp/ansible_WObIqE/ansible_module_ec2_elb_lb.py\", line 488, in ensure_ok\n    self._create_elb()\n  File \"/tmp/ansible_WObIqE/ansible_module_ec2_elb_lb.py\", line 709, in _create_elb\n    listeners = [self._listener_as_tuple(l) for l in self.listeners]\n  File \"/tmp/ansible_WObIqE/ansible_module_ec2_elb_lb.py\", line 814, in _listener_as_tuple\n    int(listener['load_balancer_port']),\nKeyError: 'load_balancer_port'\n", "module_stdout": "", "msg": "MODULE FAILURE", "rc": 0}
	to retry, use: --limit @/var/lib/jenkins/workspace/Us1-prod.eng-pst.ansible-logstash-deployment/logstash.retry

Hi @farahfa. Does this problem persist if you specify listeners like this?

listeners:
  - protocol: tcp
    load_balancer_port: 9600
    instance_port: 9600

Right now your playbook reads as though it is designating three listeners rather than one listener with those three attributes.