elb_target_group modules sometimes throws a TypeError

[ramonamis]

ISSUE TYPE

• Bug Report

COMPONENT NAME

elb_target_group

ANSIBLE VERSION

$ ansible --version
ansible 2.4.3.0
  config file = None
  configured module search path = [u'/Users/ramonamis/.ansible/plugins/modules', u'/usr/share/ansible/plugins/modules']
  ansible python module location = /Users/ramonamis/.virtualenvs/devops/lib/python2.7/site-packages/ansible
  executable location = /Users/ramonamis/.virtualenvs/devops/bin/ansible
  python version = 2.7.10 (default, Jul 15 2017, 17:16:57) [GCC 4.2.1 Compatible Apple LLVM 9.0.0 (clang-900.0.31)]

CONFIGURATION

OS / ENVIRONMENT

SUMMARY

While trying to create a target group with ansible most of the time works, sometimes it throws the following error:

TASK [lb-route53-create : Create lb target group] ******************************
Friday 23 February 2018  10:24:20 +0000 (0:00:00.037)       0:19:28.899 ******* 
An exception occurred during task execution. To see the full traceback, use -vvv. The error was: TypeError: 'NoneType' object has no attribute '__getitem__'
fatal: [localhost]: FAILED! => {"changed": false, "module_stderr": "Traceback (most recent call last):\n  File \"/tmp/ansible_pBY2Rv/ansible_module_elb_target_group.py\", line 672, in <module>\n    main()\n  File \"/tmp/ansible_pBY2Rv/ansible_module_elb_target_group.py\", line 667, in main\n    create_or_update_target_group(connection, module)\n  File \"/tmp/ansible_pBY2Rv/ansible_module_elb_target_group.py\", line 541, in create_or_update_target_group\n    current_tg_attributes = get_tg_attributes(connection, module, tg['TargetGroupArn'])\nTypeError: 'NoneType' object has no attribute '__getitem__'\n", "module_stdout": "", "msg": "MODULE FAILURE", "rc": 0}

Re-running works like a charm, with exactly the same code

STEPS TO REPRODUCE

This is the code I am using to create the target groups:

        elb_target_group:
          name: "{{ lb_target_group_name }}"
          protocol: "{{ lb_protocol }}"
          port: "{{ lb_port }}"
          vpc_id: "{{ aws_vpc }}"
          health_check_path: "{{ lb_health_check_path }}"
          health_check_protocol: "{{ lb_health_check_protocol }}"
          health_check_interval: 5
          health_check_timeout: 2
          healthy_threshold_count: 2
          unhealthy_threshold_count: 2
          successful_response_codes: "200-299"
          stickiness_enabled: "{{ lb_stickiness_enabled }}"
          stickiness_lb_cookie_duration: "{{ lb_stickiness_cookie_duration }}"
          deregistration_delay_timeout: "{{ lb_deregistration_delay_timeout }}"
          targets: "{{ lb_targets }}"
          modify_targets: "{{ lb_modify_targets }}"
          state: present

I only notice this issue when we deploy multiple target groups in a row, for instance, we have a loop which deploys multiple customers and this happens after a few loops. Re-running works like a charm.

EXPECTED RESULTS

target group is created

ACTUAL RESULTS

TASK [lb-route53-create : Create lb target group] ******************************
Friday 23 February 2018  10:24:20 +0000 (0:00:00.037)       0:19:28.899 ******* 
An exception occurred during task execution. To see the full traceback, use -vvv. The error was: TypeError: 'NoneType' object has no attribute '__getitem__'
fatal: [localhost]: FAILED! => {"changed": false, "module_stderr": "Traceback (most recent call last):\n  File \"/tmp/ansible_pBY2Rv/ansible_module_elb_target_group.py\", line 672, in <module>\n    main()\n  File \"/tmp/ansible_pBY2Rv/ansible_module_elb_target_group.py\", line 667, in main\n    create_or_update_target_group(connection, module)\n  File \"/tmp/ansible_pBY2Rv/ansible_module_elb_target_group.py\", line 541, in create_or_update_target_group\n    current_tg_attributes = get_tg_attributes(connection, module, tg['TargetGroupArn'])\nTypeError: 'NoneType' object has no attribute '__getitem__'\n", "module_stdout": "", "msg": "MODULE FAILURE", "rc": 0}

[ansibot]

Files identified in the description:

• lib/ansible/modules/cloud/amazon/elb_target_group.py

If these files are inaccurate, please update the component name section of the description or use the !component bot command.

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[ansibot]

cc @willthames @wimnat
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[s-hertel]

Just making a note that a custom waiter would fix this. Going to try to work on that soon.

[Akasurde]

@ramonamis Could you please check if PR #37079 works for you and let us know? Thanks,

needs_info

[Akasurde]

resolved_by_pr #37079

[ramonamis]

@Akasurde this is pretty hard to reproduce, but I will try my best

[ansibot]

cc @jillr @tremble
click here for bot help

[yravid]

Had the same issue first time after upgrading from ansible 2.7.18 to 2.9.11

[ansibot]

Thank you very much for your interest in Ansible. Ansible has migrated much of the content into separate repositories to allow for more rapid, independent development. We are closing this issue/PR because this content has been moved to one or more collection repositories.

• lib/ansible/modules/cloud/amazon/elb_target_group.py -> https://galaxy.ansible.com/community/aws

For further information, please see:
https://github.com/ansible/ansibullbot/blob/master/docs/collection_migration.md