Hello,
[email protected] schrieb am Dienstag, 8. März 2022 um 17:02:54 UTC+2:
> Hi Evrybody,
> I'm facing to a problem that I don't understand the origin: Any help will
> be welcome.
>
> I want to use in a playbook a role where the name depends on a variable
> defined in the inventory.
>
> I have the following dynamic inventory for a host:
>
> the command ansible-inventory -i /etc/ansible/cobbler.py --host
> "rhel8-test-2" returns:
>
> {
> "cobbler": {
> ...
> "image": "",
> "ks_meta": {},
> "mgmt_classes": [
> "online",
> ],
> "name": "rhel8-test-2",
> "netboot_enabled": true,
> "power_user": "",
> "profile": "HWCL_402"
> }
> }
>
> In my playbook I want to acess to the profile variable =>
> "cobbler.profile": "HWCL_402"
> The following playbook works fine:
>
> ---
> - name: " print profile"
> hosts: "{{ myhost }}"
> gather_facts: no
>
> vars:
> PROFILE: "{{ hostvars[inventory_hostname].cobbler.profile }}"
>
> tasks:
>
> - name: print profile value defined in inventory
> ansible.builtin.debug:
> msg: "{{ PROFILE }}"
>
>
> This playbook prints the correct value of my variable:
> ansible-playbook -i /etc/ansible/cobbler.py playbook2.yml -e
> "myhost=rhel8-test-2"
>
> PLAY [print profile]
> *******************************************************************************************
> TASK [print profile value defined in inventory]
> *******************************************************************************************
> ok: [rhel8-test-2] => {
> "msg": "HWCL_402"
> }
> ...
>
>
> Now, , I add the call to a role ( echo ) where the path depends on
> profile value:
> -> the role is under HWCL_402/echo
>
> ---
> - name: " use profile"
> hosts: "{{ myhost }}"
> gather_facts: no
>
> vars:
>
> PROFILE: "{{ hostvars[inventory_hostname].cobbler.profile }}"
>
> tasks:
>
> - name: print profile value defined in inventory
> ansible.builtin.debug:
> msg: "{{ PROFILE }}"
>
>
> *roles:*
> * - "{{ PROFILE }}/echo"*
>
> the execution of this modifified playbook returns immediatly :
>
> *ERROR! {{ hostvars[inventory_hostname].cobbler.profile }}:** 'hostvars'
> is undefined*
>
> what I did wrong ? why hostvars is undefined ? it was correct in the
> previous example ?
> If I declare PROFILE in a simple variable ( not in the inventory) it
> 'works also fine !
>
I think that hostvars can be used only for something that is related to a
target host where ansible tasks are executed (in your case behind variable
'myhost'). The definition of a role directory again is related to the
control host thus the host where your playbook is running.
BR
Roland
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