# Jinja 2 template syntax error **URL:** \ **Category:** Ansible Project\ **Created:** [June 15, 2017, 4:47pm UTC](https://forum.ansible.com/t/jinja-2-template-syntax-error/24738 "2017-06-15T16:47:09Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Owen\_Corcoran](https://avatars.discourse-cdn.com/v4/letter/o/977dab/32.png) [@Owen\_Corcoran](https://forum.ansible.com/u/Owen_Corcoran)\ **Post date:** [June 15, 2017, 4:47pm UTC](https://forum.ansible.com/t/jinja-2-template-syntax-error/24738/1 "2017-06-15T16:47:09Z")
Hi, Im having an issue with the following Jinja2 template and I just cant figure out how to get it to display the ip4 addresses of the hosts from the hostvars for the hosts in the inventory file below {% for host\_system in groups['hosts'] %} {% if "ansible\_eth0" in hostvars[host\_system] -%} sentinel known-sentinel mymaster {{ hostvars[host\_system]['ansible\_eth0']['ipv4']['address'] }} 26379 {{ hostvars[host\_system]['sentinel\_id'] }} {%- endif -%} {% endfor %} Inventory [hosts:children] haproxyhosts redishosts [haproxyhosts] Hahost1 Hahost2 [redishosts] Rhost1 Rhost2 Error fatal: [10.193.45.158]: FAILED! =\> {     "changed": false,     "failed": true,     "invocation": {         "module\_args": {             "daemon\_reload": false,             "enabled": true,             "masked": null,             "name": "redis-sentinel",             "state": "restarted",             "user": false         }     },     "msg": "Unable to restart service redis-sentinel: Job for redis-sentinel.service failed because the control process exited with error code. See \"systemctl status redis-sentinel.service\" and \"journalctl -xe\" for details.\n" } fatal: [10.193.45.157]: FAILED! =\> {     "changed": false,     "failed": true,     "invocation": {         "module\_args": {             "daemon\_reload": false,             "enabled": true,             "masked": null,             "name": "redis-sentinel",             "state": "restarted",             "user": false         }     },     "msg": "Unable to restart service redis-sentinel: Job for redis-sentinel.service failed because the control process exited with error code. See \"systemctl status redis-sentinel.service\" and \"journalctl -xe\" for details.\n" } ---
**Author:** ![Dick\_Davies](https://avatars.discourse-cdn.com/v4/letter/d/b9e5f3/32.png) [@Dick\_Davies](https://forum.ansible.com/u/Dick_Davies)\ **Post date:** [June 15, 2017, 5:01pm UTC](https://forum.ansible.com/t/jinja-2-template-syntax-error/24738/2 "2017-06-15T17:01:33Z")
What does the generated config look like? The error is just redis-sentinel crashing. ---
**Author:** ![Owen\_Corcoran](https://avatars.discourse-cdn.com/v4/letter/o/977dab/32.png) [@Owen\_Corcoran](https://forum.ansible.com/u/Owen_Corcoran)\ **Post date:** [June 15, 2017, 5:13pm UTC](https://forum.ansible.com/t/jinja-2-template-syntax-error/24738/3 "2017-06-15T17:13:17Z")
Looks like I pastes the wrong error. The error is undefined variable ansible\_eth0. It’s works when I only use one group rather than the combined group. Plus it doesn’t seem to see the host var properties for the hosts ---
**Author:** ![jean-yves](https://avatars.discourse-cdn.com/v4/letter/j/a587f6/32.png) [@jean-yves](https://forum.ansible.com/u/jean-yves)\ **Post date:** [June 15, 2017, 5:37pm UTC](https://forum.ansible.com/t/jinja-2-template-syntax-error/24738/4 "2017-06-15T17:37:21Z")
Hi, 15 juin 2017 19:13 “Owen Corcoran” \ a écrit: ---
**Author:** ![Owen\_Corcoran](https://avatars.discourse-cdn.com/v4/letter/o/977dab/32.png) [@Owen\_Corcoran](https://forum.ansible.com/u/Owen_Corcoran)\ **Post date:** [June 15, 2017, 6:47pm UTC](https://forum.ansible.com/t/jinja-2-template-syntax-error/24738/5 "2017-06-15T18:47:40Z")
What the play book is running is {% for host\_system in groups[‘hosts’] %} sentinel known-sentinel mymaster {{ hostvars[host\_system][‘ansible\_eth0’][‘ipv4’][‘address’] }} 26379 {{ hostvars[host\_system][‘sentinel\_id’] }} {% endfor %} The error im getting implied the host\_system variable isnt getting a value that hostvars can process to determine the values im trying to reference “changed”: false, “failed”: true, “invocation”: { “module\_args”: { “backup”: “yes”, “dest”: “/etc/redis-sentinel.conf”, “group”: “redis”, “mode”: “0644”, “owner”: “redis”, “src”: “templates/redis-sentinel.conf.j2” }, “module\_name”: “template” }, “msg”: “AnsibleUndefinedVariable: ‘dict object’ has no attribute ‘ansible\_eth0’” ---
**Author:** ![Kai\_Stian\_Olstad](https://avatars.discourse-cdn.com/v4/letter/k/e19adc/32.png) [@Kai\_Stian\_Olstad](https://forum.ansible.com/u/Kai_Stian_Olstad)\ **Post date:** [June 15, 2017, 7:45pm UTC](https://forum.ansible.com/t/jinja-2-template-syntax-error/24738/6 "2017-06-15T19:45:32Z")
The template looks correct, so two things can result in this message, you are not running facts and/or the hosts doesn't have a interface name eth0. You can easily check if they have eth0 with ad-hoc Ansible ansible hosts -m setup -a "filter=ansible\_eth0" ---
**Author:** ![Owen\_Corcoran](https://avatars.discourse-cdn.com/v4/letter/o/977dab/32.png) [@Owen\_Corcoran](https://forum.ansible.com/u/Owen_Corcoran)\ **Post date:** [June 15, 2017, 8:16pm UTC](https://forum.ansible.com/t/jinja-2-template-syntax-error/24738/7 "2017-06-15T20:16:02Z")
Checked all hosts, and they all have eth0 interfaces. The loop in the template works when i limit it to one host group . I think its just not getting the vars the error is AnsibleUnderDefinedVariable: dict object has no attribute ansible\_eth0