Please explain to me how can I fix this problem? i have this file 
defaults/main.yml

---
node1:
 ip: 1.1.1.1

node2:
 ip: 2.2.2.2

node3:
 ip: 3.3.3.3 


Now, I want in template file ip.j2 by for loop access the IPs of each 
server and save in address variable

Like this:

address= 1.1.1.1,2.2.2.2,3.3.3.3


I tried this code:

address={% for x in {{nubmer_nodes}} %}
{{node[x].ip}}
{% if loop.last %},{% endif %}
{% endfor %}




But an error occurs. How should I do this?

*Error* :

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

ok: [db2]
ok: [db3]
ok: [db1]

TASK [ssh : -- my loop --] 
*************************************************************************

fatal: [db1]: FAILED! => {"changed": false, "msg": "AnsibleError: template 
error while templating string: expected token ':', got '}'. String: 
\r\naddress={% for x in {{number_nodes}} %}\r\n{{node[x].ip}}\r\n{% if 
loop.last %},{% endif %}\r\n{% endfor %}"}
fatal: [db2]: FAILED! => {"changed": false, "msg": "AnsibleError: template 
error while templating string: expected token ':', got '}'. String: 
\r\naddress={% for x in {{number_nodes}} %}\r\n{{node[x].ip}}\r\n{% if 
loop.last %},{% endif %}\r\n{% endfor %}"}
fatal: [db3]: FAILED! => {"changed": false, "msg": "AnsibleError: template 
error while templating string: expected token ':', got '}'. String: 
\r\naddress={% for x in {{number_nodes}} %}\r\n{{node[x].ip}}\r\n{% if 
loop.last %},{% endif %}\r\n{% endfor %}"}
        to retry, use: --limit @/etc/ansible/playbooks/get_ip_ssh.retry

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

db1                        : ok=1    changed=0    unreachable=0    failed=1
db2                        : ok=1    changed=0    unreachable=0    failed=1
db3                        : ok=1    changed=0    unreachable=0    failed=1











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