set_fact - Set host facts from a task


This module allows setting new variables. Variables are set on a host-by-host basis just like facts discovered by the setup module. These variables will be available to subsequent plays during an ansible-playbook run, but will not be saved across executions even if you use a fact cache.


parameter required default choices comments
The set_fact module takes key=value pairs as variables to set in the playbook scope. Or alternatively, accepts complex arguments using the args: statement.


# Example setting host facts using key=value pairs, note that this always creates strings or booleans
- set_fact: one_fact="something" other_fact="{{ local_var }}"

# Example setting host facts using complex arguments
- set_fact:
     one_fact: something
     other_fact: "{{ local_var * 2 }}"
     another_fact: "{{ some_registered_var.results | map(attribute='ansible_facts.some_fact') | list }}"

# As of 1.8, Ansible will convert boolean strings ('true', 'false', 'yes', 'no')
# to proper boolean values when using the key=value syntax, however it is still
# recommended that booleans be set using the complex argument style:
- set_fact:
    one_fact: true
    other_fact: false



The var=value notation can only create strings or booleans. If you want to create lists/arrays or dictionary/hashes use var: [val1, val2]

This is a Core Module

For more information on what this means please read Core Modules

For help in developing on modules, should you be so inclined, please read Community Information & Contributing, developing_test_pr and Developing Modules.

© 2012–2016 Michael DeHaan
© 2016 Red Hat, Inc.
Licensed under the GNU General Public License version 3.