How to loop into user defined variables and use them to generate file using jinja template in ansible?

[Rushyang Darji]

Hi,

I have a roles/myrole/vars/main.yml as below:

HAProxy_Vars:

        ADMIN: "{{ lookup('env', 'ADMIN') }}"

        MANAGED1: "{{ lookup('env', 'MANAGED1') }}"

        MANAGED2: "{{ lookup('env', 'MANAGED2') }}"

        MANAGED1PORT: "{{ lookup('env', 'MANAGED1PORT')|default('20300',true) }}"

        MANAGED2PORT: "{{ lookup('env', 'MANAGED2PORT')|default('20300',true) }}"

        ENVHOME: "{{ lookup('env', 'HOME') }}"

roles/myrole/tasks/main.yml as below:

# looping into HAProxy_Vars  to verify each and every value are assigned something otherwise it should fail.

- name: "Checking if all variables are assigned during haproxy-installation role"

  fail: msg="Variable '{{ item }}' is not defined"

  when: item.value == ""

  with_dict: "{{ HAProxy_Vars }}"

# Below is giving me hard time. Any of above mentioned variable are not identified by ansible during generation of file using eg: {{ ENVHOME }} in jinja2 template.

- name: "Generating correct service file with jinja2 template"

  tags: "haproxy-service-jinja"

  template:

        src: haproxy.service.j2

        dest: /usr/lib/systemd/system/haproxy.service

        owner: root

        group: root

        mode: '0600'

It fails with: 

TASK [haproxy-installation : Generating correct service file with jinja2 template] ***

task path: /ossusr01/oss/users/acdoss07/ACDSOM/roles/haproxy-installation/tasks/main.yml:36

fatal: [adminserver]: FAILED! => {"changed": false, "failed": true, "invocation": {"module_args": {"dest": "/usr/lib/systemd/system/haproxy.service", "group": "root", "mode": "0600", "owner": "root", "src": "haproxy.service.j2"}, "module_name": "template"}, "msg": "AnsibleUndefinedVariable: 'ENVHOME' is undefined"}

What am I doing wrong here?

[Kai Stian Olstad]

On 16. juni 2017 14:33, Rushyang Darji wrote:
> Hi,
>
> I have a roles/myrole/vars/main.yml as below:
>
> HAProxy_Vars:
> ADMIN: "{{ lookup('env', 'ADMIN') }}"
> MANAGED1: "{{ lookup('env', 'MANAGED1') }}"
> MANAGED2: "{{ lookup('env', 'MANAGED2') }}"
> MANAGED1PORT: "{{ lookup('env',
> 'MANAGED1PORT')|default('20300',true) }}"
> MANAGED2PORT: "{{ lookup('env',
> 'MANAGED2PORT')|default('20300',true) }}"
> ENVHOME: "{{ lookup('env', 'HOME') }}"
>

> # Below is giving me hard time. Any of above mentioned variable are not
> identified by ansible during generation of file using eg: {{ ENVHOME }} in
> jinja2 template.
> - name: "Generating correct service file with jinja2 template"
> tags: "haproxy-service-jinja"
> template:
> src: haproxy.service.j2
> dest: /usr/lib/systemd/system/haproxy.service
> owner: root
> group: root
> mode: '0600'
>
>
> It fails with:
> TASK [haproxy-installation : Generating correct service file with jinja2
> template] ***
> task path:
> /ossusr01/oss/users/acdoss07/ACDSOM/roles/haproxy-installation/tasks/main.yml:36
> fatal: [adminserver]: FAILED! => {"changed": false, "failed": true,
> "invocation": {"module_args": {"dest":
> "/usr/lib/systemd/system/haproxy.service", "group": "root", "mode": "0600",
> "owner": "root", "src": "haproxy.service.j2"}, "module_name": "template"},

> "msg": "AnsibleUndefinedVariable: '*ENVHOME' is undefined*"}

>
>
> What am I doing wrong here?

ENVHOME doesn't exist.
Your varible is a dictionary called HAProxy_Vars, so you need to use the
complete name {{ HAProxy_Vars.ENVHOME }}

--
Kai Stian Olstad