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Accepted
emmdee
Asked: 2019-03-29 23:02:56 +0800 CST

Ansible conditionals - Wildcard match string

  • 772

I have the following conditional in an Ansible task: 

when: ec2_tag_Name == 'testhost01'

It works fine, however I would like to match a wildcard on the ec2_tag_Name field.

So something like this

when: ec2_tag_Name == 'testhost*'

The goal is to match anything like testhostx testhost12 testhostABC etc etc just anything matching testhost at the start of the string.

Is this possible? Can't seem to get it working.

ansible

2 Answers

  1. Best Answer

    From Testing Strings:

    To match strings against a substring or a regex, use the “match” or “search” filter

    In your case:

    when: ec2_tag_Name is match("testhost.*")
    • 16

  2. This works as well.

    when: "ec2_tag_Name.startswith('testhost')"

    You can combine logical operators as well like and and or

    • 11