CODEWITHSUNDEEP
loopsansiblejinja2
Sridhar Adurthi
Sridhar Adurthi

Reputation: 141

Loop though hosts using Jinja2 template

I have hosts file like below

[test1]
10.33.11.198
10.33.11.185

i am using a template like below

{% for i in groups['test1'] %}
IP{{ i }}={{ hostvars[groups['test1'][i]]['ansible_default_ipv4']['address'] }}
{% endfor %}

my expectation is 

IP0=10.33.11.198
IP1=10.33.11.185

but, i am getting below error.

fatal: [10.33.11.198]: FAILED! => {"changed": false, "msg": "AnsibleUndefinedVariable: 'list object' has no attribute u'10.33.11.198'"}
fatal: [10.33.11.185]: FAILED! => {"changed": false, "msg": "AnsibleUndefinedVariable: 'list object' has no attribute u'10.33.11.198'"}

Any help would be appreciated.

Upvotes: 0

Views: 4110

Answers (1)

jsantander
jsantander

Reputation: 5102

Your problem is that i is not an index, but an element of the list. Try

{% for i in groups['test1'] %}
IP{{ loop.index0 }}={{ hostvars[i]['ansible_default_ipv4']['address'] }}
{% endfor %}

Check Jinja2 for statement

Trying a minimal example:

hosts:

[test1]
10.33.11.198
10.33.11.185

and x.yml (replaced your ['ansible_default_ipv4']['address'] with just inventory_hostname)

- hosts: localhost
  tasks:
   - debug: msg="{% for i in groups['test1'] %}\nIP{{ loop.index0 }}={{ hostvars[i].inventory_hostname }}\n{% endfor %}"

running:

$ ansible-playbook -i hosts x.yml 

PLAY [localhost] ***************************************************************************************

TASK [Gathering Facts] *********************************************************************************
ok: [localhost]

TASK [debug] *******************************************************************************************
ok: [localhost] => {
    "msg": "IP0=10.33.11.198\nIP1=10.33.11.185\n"
}

PLAY RECAP *********************************************************************************************
localhost                  : ok=2    changed=0    unreachable=0    failed=0

Upvotes: 1

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