CODEWITHSUNDEEP
ansible
rgrinberg
rgrinberg

Reputation: 9878

Run task only if host does not belong to a group

I'd like to able to run an ansible task only if the host of the current playbook does not belong to a certain group. In semi pseudo code:

- name: my command
  command: echo stuff
  when: "if {{ ansible_hostname }} not in {{ ansible_current_groups }}"

How should I do this?

Upvotes: 133

Views: 190660

Answers (3)

Iskandar Najmuddin
Iskandar Najmuddin

Reputation: 2876

Here's another way to do this:

- name: my command
  command: echo stuff
  when: "'groupname' not in group_names"

group_names is a magic variable as documented here:

List of groups the current host is part of, it always reflects the inventory_hostname and ignores delegation.

Upvotes: 262

nvartolomei
nvartolomei

Reputation: 1505

You can set a control variable in vars files located in group_vars/ or directly in hosts file like this:

[vagrant:vars]
test_var=true

[location-1]
192.168.33.10 hostname=apollo

[location-2]
192.168.33.20 hostname=zeus

[vagrant:children]
location-1
location-2

And run tasks like this:

- name: "test"
  command: "echo {{test_var}}"
  when: test_var is defined and test_var

Upvotes: 26

YosSaL
YosSaL

Reputation: 1082

I have came up with this:

- name: my command
  command: echo stuff
  when: "inventory_hostname not in groups.get('your-group', [])"

Upvotes: 9

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