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| ---
# ansible2.3.0.0_conditionals_examples.yaml
# ansible 2.3.0.0 conditionals test
#
#
# https://gist.github.com/marcusphi/6791404
# $ cat local.hosts
# local ansible_host=127.0.0.1
# This has been tested with ansible 2.3.0.0 with these commands:
# ansible-playbook -i local.hosts ansible2.3.0.0_conditionals_examples.yaml
# NB: The type of the variable is crucial!
# 字符串也可以作为『布尔值(bool)』进行判断，但是其值必须与布尔变量的名称相同。
# ex: 'false' - false
# '1' -> 1
- name: Ansible Conditionals Examples
hosts: local
gather_facts: no
# vars_files:
# - vars.yml
vars:
is_true: true
is_false: false
is_true_string: 'true'
is_false_string: 'false'
is_other_string: 'other'
is_True: True
is_False: False
is_yes: yes
is_no: no
is_on: on
is_off: off
is_1: 1
is_0: 0
is_1_string: '1'
is_0_string: '0'
tasks:
############################
# SIMPLE expressions
############################
- name: is_true (true) # OK
command: echo hello
when: is_true
- name: is_false (false) # OK
command: echo hello
when: is_false
- name: (is_true) (true) # OK
command: echo hello
when: (is_true)
- name: (is_false) (false) # OK
command: echo hello
when: (is_false)
- name: not is_true (false) # OK
command: echo hello
when: not is_true
- name: not is_false (true) # OK
command: echo hello
when: not is_false
- name: not (is_true) (false) # OK
command: echo hello
when: not (is_true)
- name: not (is_false) (true) # OK
command: echo hello
when: not (is_false)
####################################
# SIMPLE expressions section 2
####################################
- name: is_True (true) # OK
command: echo hello
when: is_True
- name: is_False (false) # OK
command: echo hello
when: is_False
- name: is_yes (true) # OK
command: echo hello
when: is_yes
- name: is_no (false) # OK
command: echo hello
when: is_no
- name: is_on (true) # OK
command: echo hello
when: is_on
- name: is_off (false) # OK
command: echo hello
when: is_off
- name: is_1 (true) # OK
command: echo hello
when: is_1
- name: is_0 (false) # OK
command: echo hello
when: is_0
- name: is_1_string (true) # OK
command: echo hello
when: is_1_string
- name: is_0_string (false) # OK
command: echo hello
when: is_0_string
- name: is_true_string (true) # OK
command: echo hello
when: is_true_string
- name: is_false_string (false) # OK
command: echo hello
when: is_false_string
# - name: is_other_string ( FAILED ) # FAILED: common string can not be conditional
# command: echo hello
# when: is_other_string
############################
# STRING EQUAL expressions
############################
- name: is_other_string == 'other' (true) # OK
command: echo hello
when: is_other_string == 'other'
- name: is_other_string != 'other' (false) # OK
command: echo hello
when: is_other_string != 'other'
- name: is_other_string != 'false' (true) # OK
command: echo hello
when: is_other_string != 'false'
- name: not is_other_string == 'other' (not true = false) # OK
command: echo hello
when: not is_other_string == 'other'
- name: not is_other_string != 'other' (not false = true) # OK
command: echo hello
when: not is_other_string != 'other'
- name: not is_other_string == 'false' (not false = true) # OK
command: echo hello
when: not is_other_string == 'false'
############################
# MULTIPLE expressions
############################
- name: is_true and is_other_string == 'other' ( true and true = true ) # OK
command: echo hello
when: is_true and is_other_string == 'other'
- name: is_true or is_other_string == 'other' ( true or true = true ) # OK
command: echo hello
when: is_true or is_other_string == 'other'
- name: is_false and is_other_string == 'other' ( false and true = false ) # OK
command: echo hello
when: is_false and is_other_string == 'other'
- name: is_false or is_other_string == 'other' ( false or true = true ) # OK
command: echo hello
when: is_false or is_other_string == 'other'
- name: is_false or is_other_string != 'other' ( false or false = false ) # OK
command: echo hello
when: is_false or is_other_string != 'other'
- name: not is_false and is_other_string == 'other' ( not false and true = true ) # OK
command: echo hello
when: not is_false and is_other_string == 'other'
- name: not (is_false and is_other_string == 'other') ( not ( false and true ) = true ) # OK
command: echo hello
when: not (is_false and is_other_string == 'other')
- name: not (is_true and is_other_string == 'other') ( not ( true and true ) = false ) # OK
command: echo hello
when: not (is_true and is_other_string == 'other')
- name: not is_true or not is_other_string == 'other' ( not true or not true = false ) # OK
command: echo hello
when: not is_true or not is_other_string == 'other'
- name: (not is_true) or (not is_other_string != 'other') ( (not true) or (not false) = true ) # OK
command: echo hello
when: (not is_true) or (not is_other_string != 'other')
##################################
# MULTIPLE expressions FOR AND
##################################
- name: is_true and is_true ( true ) # OK
command: echo hello
when:
- is_true
- is_true
- name: is_true and is_false ( false ) # OK
command: echo hello
when:
- is_true
- is_false
- name: is_true and not is_false ( true ) # OK
command: echo hello
when:
- is_true
- not is_false
- name: is_false and is_false ( false ) # OK
command: echo hello
when:
- is_false
- is_false
|
