Ansible parsing string to boolean fails (variable assignment)

Question

I am trying to assign a result of a string compare to a boolean variable in ansible (2.5.4) but no matter how I do it its False even though it should be True:

OS_ENV: "test"
IS_TEST: '{{ "OS_ENV" == "test"}}'
#IS_TEST: '{{ "OS_ENV" == "test"}}'
#IS_TEST: '{{ "OS_ENV" == "test" | bool}}'
#IS_TEST: "{{ OS_ENV == 'test' | bool }}"
#IS_TEST: ("{{OS_ENV}}" == 'test')
#IS_TEST: true
test_boolean: "{{'TEST_IS_TRUE' if IS_TEST else 'TEST_IS_FALSE'}}"

Task to print result:

- name: "test_boolean is {{ test_boolean }} when IS_TEST is {{ IS_TEST }}"
  debug:
    msg: "Message is:  test_boolean is {{ test_boolean }} when IS_TEST is {{ IS_TEST }}"

Which in all of the above cases gives:

   "msg": "Message is:  test_boolean is TEST_IS_FALSE when IS_TEST is False"

which is wrong, what am I missing?

techraf · Accepted Answer · 2018-06-18 07:44:18Z

2

The following expressions will always produce false:

```
IS_TEST: '{{ "OS_ENV" == "test"}}'
```
String OS_ENV does not match string test.
```
IS_TEST: '{{ "OS_ENV" == "test" | bool}}'
```
String OS_ENV does not match false (i.e., string test cast to Boolean, as | has precedence over ==).

IS_TEST: "{{ OS_ENV == 'test' | bool }}"

Variable OS_ENV value does not match false.

```
IS_TEST: ("{{OS_ENV}}" == 'test')
```
String {{OS_ENV}} does not match string test.

The expression comparing a variable value to a string is:

IS_TEST: '{{ OS_ENV == "test" }}'

edited Jun 18, 2018 at 7:44

answered Jun 18, 2018 at 7:38

techraf

69.2k30 gold badges211 silver badges215 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Ansible parsing string to boolean fails (variable assignment)

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related