Get memory info using Ansible

[Dip Giri]

Whatever ansible give a memory info in ansible_fact it doesn't match with memory info 

that we get from free -m command. Why this problem happened for that if have any solution plz give me 

---
- name: Setup server
hosts: localhost
tasks:

- name: test
shell: free -m
register: xyz

- name: Print service status
debug:
msg: "{{ansible_memory_mb.real}}"

- name: Print service status
debug:
msg: "{{xyz.stdout.split('\n')}}"

[Vladimir Botka]

On Tue, 8 Feb 2022 06:46:58 -0800 (PST)
Dip Giri <dipakgir...@gmail.com> wrote:

> Whatever ansible give a memory info in ansible_fact it doesn't match with

> memory info that we get from *free -m *command.

FWIW. Quoting from 'Performance Data Collection Settings for Runner'
https://ansible-runner.readthedocs.io/en/stable/intro/#performance-data-collection-settings-for-runner

"Runner is capable of collecting performance data (namely
cpu usage, memory usage, and pid count) during the execution of a
playbook run. Resource profiling is made possible by the use of
control groups ..."

--
Vladimir Botka

[Rilindo Foster]

Hi Dip!

Assuming that you are referring to this code, note that that Ansible will run python on the target node - Python the interpreter itself will consume memory. And then if you run the shell module under Ansible, it will spawn a shell which itself will consume memory as well.

- Rilindo

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[Петрук Ігор Степанович]

Hi, All!

My code:

- name: ===== Блок отримання інформації про виділену RAM ==========================================
  block:
    - name: ===== Вівід інформації про виділену, використану та залишок пам'яті ===================
      ansible.builtin.debug:
        msg: "Виділена пам'ять: {{ ansible_memory_mb.real.total }} | Використана: {{ ansible_memory_mb.real.used }} | Залишилось: {{ ansible_memory_mb.real.total - ansible_memory_mb.real.used }} ({{ ((1-ansible_memory_mb.real.used/ansible_memory_mb.real.total)*100)|int }}%)"

stdout:

ok: [vl-nr-app1] => {
    "msg": "Виділена пам'ять: 2619 | Використана: 2004 | Залишилось: 615 (23%)"
}
ok: [vl-nr-app2] => {
    "msg": "Виділена пам'ять: 2619 | Використана: 1983 | Залишилось: 636 (24%)"
}
ok: [al-nr-app1] => {
    "msg": "Виділена пам'ять: 2619 | Використана: 2073 | Залишилось: 546 (20%)"
}

вторник, 8 февраля 2022 г. в 19:16:40 UTC+2, Rilindo Foster: