Get memory info using Ansible

Archives Ansible Project
1

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

2

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 ..."

3

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
4

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: