ansible playbook with jinja2 loop

Question

I need to write a playbook using jinja2 tamplate inorder to write firewalld rule in ansible. For that I wrote

---
- name: Firewalld check
  hosts: localhost
  become: yes

  tasks:
  - name: Allow ICMP traffic
    firewalld:
      rich_rule: rule family='ipv4' source address=" {{ source }} " protocol value="icmp" accept
      permanent: no
      state: enabled

in template and

---

- name: Firewalld config
  hosts: localhost
  become: yes

  vars:
    source:
       - 172.16.2.114
       - 172.16.2.115
  tasks:

  - name: Rules
    template:
      src: playtem.yml.j2
      dest: playbook.yml

in playbook. The output I expected is

---
- name: Firewalld check
  hosts: localhost
  become: yes

  tasks:
  - name: Allow ICMP traffic
    firewalld:
      rich_rule: rule family='ipv4' source address="172.16.2.114" protocol value="icmp" accept
      permanent: no
      state: enabled
  - name: Allow ICMP traffic
    firewalld:
      rich_rule: rule family='ipv4' source address="172.16.2.115" protocol value="icmp" accept
      permanent: no
      state: enabled

but the outcome which came is

---
- name: Firewalld check
  hosts: localhost
  become: yes

  tasks:
  - name: Allow ICMP traffic
    firewalld:
      rich_rule: rule family='ipv4' source address=" [u'172.16.2.114', u'172.16.2.115'] " protocol value="icmp" accept
      permanent: no
      state: enabled

So could anyone help me to solve this problem please?

Panki · Accepted Answer · 2020-07-08 10:58:12Z

2

I'd suggest using loop instead of templating out a playbook.

---
- name: Firewalld check
  hosts: localhost
  become: yes
  vars:
    source:
       - 172.16.2.114
       - 172.16.2.115
  tasks:
    - name: Allow ICMP traffic
      firewalld:
        rich_rule: rule family='ipv4' source address="{{ item }}" protocol value="icmp" accept
        permanent: no
        state: enabled
      loop: "{{ source }}"

answered Jul 8, 2020 at 10:58

Panki

7,2123 gold badges28 silver badges37 bronze badges

Thank you. Your answer was helful. But when using many varibles and many modules in a playbook, which method will you recommend?

Vithushan Rasalingam
– Vithushan Rasalingam

2020-07-08 13:25:40 +00:00
Commented Jul 8, 2020 at 13:25
You should give this a good read: docs.ansible.com/ansible/latest/user_guide/… It's hard to say what works best for you - highly dependant on use case and infrastructure

Panki
– Panki

2020-07-08 15:34:01 +00:00
Commented Jul 8, 2020 at 15:34

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