Ansible when condition examples

 Task: Install http package using yum module and load services, enable services, start services when Operating system is "CentOS"

[osboxes@master ansible-playbooks]$ cat conditions.yml

---

- name: Install packages

  hosts: all

  become: true

  become_user: root

  tasks:

    - name: Install httpd

      yum:

        name: httpd

        state: present

    - name: load apache service

      systemd: daemon_reload=yes name=httpd

      when: (ansible_distribution == "CentOS")

    - name: enable apache service

      service: name=httpd enabled=yes

      when: (ansible_distribution == "CentOS")

    - name: start apache service

      service: name=httpd state=started

      when: (ansible_distribution == "CentOS")

[osboxes@master ansible-playbooks]$ ansible-playbook conditions.yml -i inventory.txt --syntax-check

playbook: conditions.yml

[osboxes@master ansible-playbooks]$ ansible-playbook conditions.yml -i inventory.txt

PLAY [Install packages] *************************************************************************************************************************************

TASK [Gathering Facts] **************************************************************************************************************************************

ok: [192.168.1.182]

TASK [Install httpd] ****************************************************************************************************************************************

ok: [192.168.1.182]

TASK [load apache service] **********************************************************************************************************************************

changed: [192.168.1.182]

TASK [enable apache service] ********************************************************************************************************************************

ok: [192.168.1.182]

TASK [start apache service] *********************************************************************************************************************************

changed: [192.168.1.182]

PLAY RECAP **************************************************************************************************************************************************

192.168.1.182              : ok=5    changed=2    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0