variable not defined

[Kenady Inampudi]

Here is my play book, i am trying to check the id's using wildcards like ora****

I am getting variable not defined 

---
- hosts: node1.example.com
  gather_facts: no
  ignore_unreachable: yes
  tasks:
    - shell: "cat /etc/passwd|awk -F : '{print $1}'|grep -i '^ora.*$'"
      register: userid
      ignore_errors: true
    - shell: id "{{ item }}"
      register: id
      with_items: "{{ userid.stdout.split('\n') }}"
    - debug:
        var: id.stdout_lines


----------------------------

OUTPUT


PLAY [node1.example.com] ************************************************************************************************************************************************************************************************

TASK [shell] ******************************************************************************************************************************************************************************************************
changed: [node1.example.com]

TASK [shell] ******************************************************************************************************************************************************************************************************
changed: [node1.example.com] => (item=oraabc)
changed: [node1.example.com] => (item=orapq3)
changed: [node1.example.com] => (item=orapqj)
changed: [node1.example.com] => (item=oracle)

TASK [debug] ******************************************************************************************************************************************************************************************************
ok: [node1.example.com] => {
    "id.stdout_lines": "VARIABLE IS NOT DEFINED!"
}

PLAY RECAP ********************************************************************************************************************************************************************************************************
node1.example.com                : ok=3    changed=2    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0

[Vladimir Botka]

On Wed, 24 Aug 2022 02:17:38 -0700 (PDT)
Kenady Inampudi <ken...@cis-in.com> wrote:

> - shell: id "{{ item }}"
> register: id
> with_items: "{{ userid.stdout.split('\n') }}"
> - debug:
> var: id.stdout_lines

The variable *id* was registered in a loop. You need the attribute
*results*. (Take a look at *id*.)

Try

- debug:
msg: "{{ id.results|map(attribute='stdout')|list }}"


Notes:

* Use *getent* instead of reading /etc/passwd* on your own
https://docs.ansible.com/ansible/latest/collections/ansible/builtin/getent_module.html

* Use *command* instead of *shell*, *loop* instead of *with_items*,
and *userid.stdout_lines* instead of *userid.stdout.split('\n')*

- command: "id {{ item }}"
register: id
loop: "{{ userid.stdout_lines }}"

--
Vladimir Botka

[Rowe, Walter P. (Fed)]

You can make your shell command much more efficient. No need to use cat and grep.

awk -F: '$1 ~ /^ora/ { print $1 }' /etc/passwd

This will find and print all usernames that begin "ora".

    - shell: "awk -F: '$1 ~ /^ora/ { print $1 }' /etc/passwd"
      register: userid
      ignore_errors: true

Then you can look at userid.results.stdout_lines (as a list) to see the list of usernames.

    - debug: var=userid.results.stdout_lines

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

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[Kenady Inampudi]

Thank you  Vladimir Botka,

This worked like a charm.

- debug:
msg: "{{ id.results|map(attribute='stdout')|list }}"

------------

i was looking at the suggestion   * Use *getent* instead of reading /etc/passwd* on your own

here i am trying to find all the oracle related ids for which i am using the wildcard  grep -i '^ora.*$'"

but when i use getent i get the below error, ------------can i use delimiters like ora*** to get oracle related ID's

---
- hosts: node1.example.com
  gather_facts: no
  ignore_unreachable: yes
  tasks:

    - getent:
        database: passwd
        key: ^ora.*$'
      register: userid
      ignore_errors: true

    - command: "id {{ item }}"
      register: id
      loop: "{{ userid.stdout_lines }}"

    - debug:
        msg: "{{ id.results|map(attribute='stdout')|list }}"

****************************OUTPUT*****************
PLAY [node1.example.com] ************************************************************************************************************************************************************************************************

TASK [getent] *****************************************************************************************************************************************************************************************************
[WARNING]: Platform linux on host node1.example.com is using the discovered Python interpreter at /usr/bin/python, but future installation of another Python interpreter could change this. See
https://docs.ansible.com/ansible/2.9/reference_appendices/interpreter_discovery.html for more information.
fatal: [node1.example.com]: FAILED! => {"ansible_facts": {"discovered_interpreter_python": "/usr/bin/python"}, "changed": false, "msg": "One or more supplied key could not be found in the database."}
...ignoring

TASK [command] ****************************************************************************************************************************************************************************************************
fatal: [node1.example.com]: FAILED! => {"msg": "'dict object' has no attribute 'stdout_lines'"}

PLAY RECAP ********************************************************************************************************************************************************************************************************
node1.example.com                : ok=1    changed=0    unreachable=0    failed=1    skipped=0    rescued=0    ignored=1

[Vladimir Botka]

On Wed, 24 Aug 2022 05:05:14 -0700 (PDT)
Kenady Inampudi <ken...@cis-in.com> wrote:

> tasks:
> - getent:
> database: passwd
> key: ^ora.*$'
> register: userid
> ignore_errors: true
> - command: "id {{ item }}"
> register: id
> loop: "{{ userid.stdout_lines }}"
> - debug:
> msg: "{{ id.results|map(attribute='stdout')|list }}"

Try

- hosts: node1.example.com
gather_facts: false
vars:
users: "{{ getent_passwd.keys()|list }}"

tasks:
- getent:
database: passwd

- command: "id {{ item }}"
register: id

loop: "{{ users|select('match', '^user.*$') }}"

- debug:
msg: "{{ id.results|map(attribute='stdout')|list }}"

Notes:

* The module *getent* stores the data automagically. In the case of
*passwd* the dictionary will be *getent_passwd*

* Put the declaration of *users* into vars

* Fit the regex to your needs and iterate the selected users

* The debug of the results is the same as before

* Take a look at *getent_passwd*

* The same way you can get the content of /etc/group in the
dictionary *getent_group*

* You can create any structure you like when you have both
dictionaries *getent_passwd* and *getent_group*


--
Vladimir Botka

[Rowe, Walter P. (Fed)]

You all are making this way too hard. You don't even have to ignore errors with this task.

    - shell: "awk -F: '$1 ~ /^ora/ { print $1 }' /etc/passwd

"
      register: userids

    - debug: var=userids.results.stdout_lines

      when: userid.results.stdout_lines

Then 'when' condition will be true only when the list is longer than zero length.

[Rowe, Walter P. (Fed)]

++++++
---
- hosts: localhost
  become: false
  gather_facts: false
  tasks:
    - shell: "awk -F: '$1 ~ /^{{ user }}/ { print $1 }' /etc/passwd"
      register: userid

    - debug: var=userid.stdout_lines
      when: userid.stdout_lines
++++++

++++++

% ansible-playbook foo.yml -e user=_snt

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

TASK [shell] ***********************************************************************************************************
changed: [localhost]

TASK [debug] ***********************************************************************************************************
ok: [localhost] => {
    "userid.stdout_lines": [
        "_sntpd"
    ]
}

PLAY RECAP *************************************************************************************************************
localhost                  : ok=2    changed=1    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0   
++++++

Walter
--
Walter Rowe, Division Chief
Infrastructure Services, OISM

Mobile: 202.355.4123

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