“When” condition on Ansible playbook doesn't work as expected using operators

Question

Below playbook use conditional statement with operators in Ansible. When I run the playbook, it never takes/validates the condition instead it consider the last set_fact val

Answer 1

Fix your indentation. when is not an argument of a set_fact action, but of a task:

- name: SHMALL value for MEM less than 16G
  set_fact:
    shmall: 3670016
  when: ansible_memtotal_mb|int <= 16384

- name: SHMALL value for MEM is between 16G and 32G
  set_fact:
    shmall: 7340032
  when: ansible_memtotal_mb|int > 16384 and ansible_memtotal_mb|int <= 32768