Playbook error - ansibleundefinedvariable 'str object' has no attribute 'device_name'

[Shivani Arora]

Hi,

I'm trying to create aws launch template using ansible module - "  community.aws.ec2_launch_template". I have different types of nodes and want to map different volumes (according to node type) in the launch template. 

For Core node - I'm trying to map 2 volumes (sdf and sdh) for which I'm getting below error -

 ansibleundefinedvariable 'str object' has no attribute 'device_name'

My code looks like this -

- name: Set ebs volumes

  set_fact:

    ebs_volumes_list:

    - device_name: sdf

      ebs:

        volume_size: 10

        delete_on_termination: yes

        encrypted: yes

        volume_type: gp3

    - device_name: sdh

      ebs:

        volume_size: 10

        delete_on_termination: yes

        encrypted: yes

        volume_type: io1

        iops: 500

  when: node_type == "Core"

- name: "Create Node launch template"

  community.aws.ec2_launch_template:

    template_name: "Test”

    monitoring:

      enabled: true

    state: present

    block_device_mappings:

     - device_name: "{{ item.device_name }}"

       ebs: "{{ item.ebs}}”

  loop: "{{ ebs_volumes_list }}"

Ansible version -

ansible [core 2.12.1]

python version = 3.9.9 (main, Jan  5 2022, 11:59:43) [GCC 4.8.5 20150623 (Red Hat 4.8.5-44)]

[Shivani Arora]

Hi All,

Looking for suggestions for above query.

Thanks

[Rajthecomputerguy]

can you try to debug first and see whats returning 

      - name: debug
        debug:
          msg: "{{ item['device_name'] }}"
        loop: "{{ ebs_volumes_list }}"

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