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Salt state with check if file on salt master exists

I try to create the following state, but I don't know how to write the if clause? Maybe someone can help me with it. What I try to accomplish is that salt takes a configuration file if a file with the target hostname exists and else take the default config.

example:

{% if ??? test -f ??? salt://ntpd/ntp.conf_{{ salt['grains.get']('host') }} %}
ntpd-config:
  file.managed:
    - name: /etc/ntp.conf
    - source: salt://ntpd/ntp.conf_{{ salt['grains.get']('host') }}
    - user: root
    - group: root
    - file_mode: 644
    - require:
      - ntpd-pkgs
{% else %}
ntpd-config:
  file.managed:
    - name: /etc/ntp.conf
    - source: salt://ntpd/ntp.conf
    - user: root
    - group: root
    - file_mode: 644
    - require:
      - ntpd-pkgs
{% endif %}

Hope, someone could help me.

Thanks in advance!

Matthias

Solution

  • I just found the answer by myself.

    Found out in the documentation that I can define multiple sources. The last one is then the default one if none of the others bevore exists.

    This now works: 

    ntpd-config:
  file.managed:
    - name: /etc/ntp.conf
    - source:
        - salt://ntpd/ntp.conf_{{ salt['grains.get']('host') }}
        - salt://ntpd/ntp.conf