access particular values gathered with stat

[dulh...@mailbox.org]

I want to check for existence of a folder and also the right owner, group and mode.

When any of the conditions (exists, owner=postgres, group=postgres, mode=0755) does not meet requirements I want to stop and be notified of the reason.

 

I think I need stat for that (exists, isdir, gr_name, pw_name, mode)

 

As a first step I try to get the value of pg_name with debug, but can not figure out how to adress that value

 

 

- name: Get stats of a file
  ansible.builtin.stat:
    path: "{{ item }}"
  register: postgres
  loop:
    - /opt/db/data

 

- name: return ownership is right
  ansible.builtin.debug:

    msg: "owned by postgres"
  when: postgres.stat.pw_name == 'postgres'

 

 

 

output

 

TASK [show content of 'postgres'] ************************************************************************************************************************************************
fatal: [dvzsn-rd5400.ref.eakte.rz-dvz.cn-mv.de]: FAILED! => {"msg": "The conditional check 'postgres.stat.pw_name == 'postgres'' failed. The error was: error while evaluating conditional (postgres.stat.pw_name == 'postgres'): 'dict object' has no attribute 'stat'. 'dict object' has no attribute 'stat'\n\nThe error appears to be in '/home/gwagner/repos/automation_postgres/playbooks/check_postgres_dir.yml': line 16, column 7, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n\n - name: show content of 'postgres'\n ^ here\n"}

 

 

what I am doing wrong?

[Rowe, Walter P. (Fed)]

You are using "loop". This places the results in a list called "results" (ie postgres.results). Use the literal path in stat and you will get the reference you seek in the debug task.

- name: Get stats of a file 
  ansible.builtin.stat: 

    path: /opt/db/data

  register: postgres 

 

- name: return ownership is right 
  ansible.builtin.debug:

    msg: "owned by postgres" 
  when: postgres.stat.pw_name == 'postgres'

OR

- name: Get stats of a file

ansible.builtin.stat:

path: "{{ item }}"

register: postgres

loop:

- /opt/db/data

- name: return ownership is right

ansible.builtin.debug:

msg: "{{ item.item }} owned by postgres"

loop: "{{ postgres.results }}"

when:

- item.stat.exists == true

- item.stat.pw_name is defined

- item.stat.pw_name == 'postgres'

- name: return ownership is not right

ansible.builtin.debug:

msg: "{{ item.item }} owned not by postgres"

loop: "{{ postgres.results }}"

when:

- item.stat.exists == true

- item.stat.pw_name is defined

- item.stat.pw_name != 'postgres'

- name: return does not exist

ansible.builtin.debug:

msg: "{{ item.item }} does not exist"

loop: "{{ postgres.results }}"

when:

- item.stat.exists == false

Walter
--
Walter Rowe, Division Chief
Infrastructure Services, OISM
Mobile: 202.355.4123

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[Rowe, Walter P. (Fed)]

TASK [what is postgres] ************************************************************************************************

ok: [localhost] => {

    "postgres": {

        "changed": false,

        "msg": "All items completed",

        "results": [

            {

                "ansible_loop_var": "item",

                "changed": false,

                "failed": false,

                "invocation": {

                    "module_args": {

                        "checksum_algorithm": "sha1",

                        "follow": false,

                        "get_attributes": true,

                        "get_checksum": true,

                        "get_md5": false,

                        "get_mime": true,

                        "path": "/opt/db/data"

                    }

                },

                "item": "/opt/db/data",

                "stat": {

                    "exists": false

                }

            }

        ],

        "skipped": false

    }

}

Walter
--
Walter Rowe, Division Chief
Infrastructure Services, OISM
Mobile: 202.355.4123

[Dick Visser]

On Wed, 6 Sept 2023 at 14:34, dulhaver via Ansible Project <ansible...@googlegroups.com> wrote:

I want to check for existence of a folder and also the right owner, group and mode.

When any of the conditions (exists, owner=postgres, group=postgres, mode=0755) does not meet requirements I want to stop and be notified of the reason.

What are you trying to do at a high level?

While you can use ansible as a glorified shell wrapper or reporting tool, but its intended purpose is configuration management.

So in this case, what will you do if the condition DO meet the requirements?

[dulh...@mailbox.org]

 

once the conditions are met I want to proceed importing/including a role that installs postgres under that specified location.

This role expects the conditions to be met in order to run successfully