using regex in jinja 2 for ansible playbooks

Question

HI i am new to jinja2 and trying to use regular expression as shown below

{% if ansible_hostname == \'uat\' %}
   {% set server = \'thinkingmonster.com\' %}
         


        

Answer 1

There is a "regex_replace" filter available in Ansible>1.6

Other Useful Filters Scroll down and you'll see this:

New in version 1.6.

To replace text in a string with regex, use the “regex_replace” filter:

# convert "ansible" to "able"
{{ 'ansible' | regex_replace('^a.*i(.*)$', 'a\\1') }}

# convert "foobar" to "bar"
{{ 'foobar' | regex_replace('^f.*o(.*)$', '\\1') }}

# convert "localhost:80" to "localhost, 80" using named groups
{{ 'localhost:80' | regex_replace('^(?P.+):(?P\\d+)$', '\\g, \\g') }}

That being said, regex is overkill for finding a solution to this particular problem.