I need to save fact into variable and use it afterwards

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1

I have a task with run_once:true , which must run only on the first host and I need to use that hostname into a lookup file , something like this:

  • name: Print facts
    debug:
    var: ansible_nodename
    register: admin_host

- name: Set authorized key took from file
become: yes
authorized_key:
user: root
state: present
key: “{{ lookup(‘file’, ‘/git/cephprep/files/{{ admin_host }}/root/.ssh/id_rsa.pub’) }}”

Just this way it’s not working

2

You can’t stack moustaches

3

Not working unfortunately…:

TASK [cephprep : Print facts] ************************************************************************************************************************************************************************************
task path: /git/cephprep/tasks/keyprep.yml:19
ok: [ha01] => {
“ansible_facts["nodename"]”: “ha01”
}

TASK [cephprep : Set authorized key took from file] **************************************************************************************************************************************************************
task path: /git/cephprep/tasks/keyprep.yml:24
fatal: [ha01]: FAILED! => {“msg”: “template error while templating string: unexpected ‘~’. String: {{ lookup(‘file’, ‘/git/cephprep/files/’ ~ ~ ‘/root/.ssh/id_rsa.pub’) }}”}
fatal: [ha02]: FAILED! => {“msg”: “template error while templating string: unexpected ‘~’. String: {{ lookup(‘file’, ‘/git/cephprep/files/’ ~ ~ ‘/root/.ssh/id_rsa.pub’) }}”}
fatal: [ha03]: FAILED! => {“msg”: “template error while templating string: unexpected ‘~’. String: {{ lookup(‘file’, ‘/git/cephprep/files/’ ~ ~ ‘/root/.ssh/id_rsa.pub’) }}”}

4

Sorry, actually this is the result:

[WARNING]: Unable to find ‘/git/cephprep/files/{‘ansible_facts[“nodename”]’: ‘ha01’, ‘failed’: False, ‘changed’: False}/root/.ssh/id_rsa.pub’ in expected paths (use -vvvvv to see paths)

5

Just copy paste with the computer clipboard and not with eyeballs and fingers

6

Are all the tasks inside one playbook, or are different tasks in different jobs in an ansible tower workflow?

Use set_fact for within-playbook, and set_stats for creating artifacts sent back to ansible tower to be presented as extra_vars to downstream jobs in a workflow.

For within-playbook:

  • set_fact:
    admin_host: “{{ ansible_nodename }}”

For downstream jobs in a workflow:

  • set_stats:
    data:
    admin_host: “{{ ansible_nodename }}”

If you need both you can do both. An artifact created with set_stats in a playbook cannot be used later in that same playbook as a variable. You have to use set_fact for that.

For loading your file within the playbook or downstream

  • name: Set authorized key took from file

become: yes
authorized_key:
user: root
state: present
key: “{{ lookup(‘file’, ‘/git/cephprep/files/’ + admin_host + '/root/.ssh/id_rsa.pub’) }}”

NOTE that I broke up the file path and inserted the admin_host with “+” which in Python (ansible runs on Python) will concatenate strings.

7

I actually worked, Thanks! :slight_smile: