How to debug the ansible playbook tasks?

How to debug the ansible playbook tasks?

We will consider the sample ansible playbook to sort the list of strings to learn the debugging skills in ansible.

- hosts: localhost

  connection: local

  gather_facts: no


  tasks:


    - name: initialize list of strings

      set_fact:

        list_values: ['2', '4', '1','9', '3']


    - name: sort defined list

      set_fact:

        sorted_list_strings: "{{ list_values | sort }}"


    - name: Print the var

      debug:

        var: sorted_list_strings

We can use option -vvvvv to debug the tasks in any ansible playbook, below is the sample debugging details for above ansible playbook.

Output:

$ ansible-playbook sort_list_strings.yml -vvvvv

ansible-playbook 2.9.1

  config file = /etc/ansible/ansible.cfg

  configured module search path = ['/home/username/.ansible/plugins/modules', '/usr/share/ansible/plugins/modules']

  ansible python module location = /usr/lib/python3.7/site-packages/ansible

  executable location = /usr/bin/ansible-playbook

  python version = 3.7.0 (default, Aug 30 2018, 14:32:33) [GCC 8.2.1 20180801 (Red Hat 8.2.1-2)]

Using /etc/ansible/ansible.cfg as config file

setting up inventory plugins

host_list declined parsing /etc/ansible/hosts as it did not pass its verify_file() method

script declined parsing /etc/ansible/hosts as it did not pass its verify_file() method

auto declined parsing /etc/ansible/hosts as it did not pass its verify_file() method

Parsed /etc/ansible/hosts inventory source with ini plugin

[WARNING]: provided hosts list is empty, only localhost is available. Note that the implicit localhost does not match 'all'


Loading callback plugin default of type stdout, v2.0 from /usr/lib/python3.7/site-packages/ansible/plugins/callback/default.py


PLAYBOOK: sort_list_strings.yml *********************************************************************************************************************************************

Positional arguments: sort_list_strings.yml

verbosity: 5

connection: smart

timeout: 10

become_method: sudo

tags: ('all',)

inventory: ('/etc/ansible/hosts',)

forks: 5

1 plays in sort_list_strings.yml


PLAY [localhost] ************************************************************************************************************************************************************

META: ran handlers


TASK [initialize list of strings] *******************************************************************************************************************************************

task path: /home/jpalanis/sort_list_strings.yml:7

ok: [localhost] => {

    "ansible_facts": {

        "list_values": [

            "2",

            "4",

            "1",

            "9",

            "3"

        ]

    },

    "changed": false

}


TASK [sort defined list] ****************************************************************************************************************************************************

task path: /home/jpalanis/sort_list_strings.yml:11

ok: [localhost] => {

    "ansible_facts": {

        "sorted_list_strings": [

            "1",

            "2",

            "3",

            "4",

            "9"

        ]

    },

    "changed": false

}


TASK [Print the var] ********************************************************************************************************************************************************

task path: /home/jpalanis/sort_list_strings.yml:15

ok: [localhost] => {

    "sorted_list_strings": [

        "1",

        "2",

        "3",

        "4",

        "9"

    ]

}

META: ran handlers

META: ran handlers


PLAY RECAP ******************************************************************************************************************************************************************

localhost                  : ok=3    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0   

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