The problem background

adopt ansible AWX Use Web Interface call playbook when , There is playbook Some variables cannot be read at run time 、 And some variables read are different from the defined values .Playbook The structure is as follows ：

my-test-playbook
|--ansible.cfg
|--fact_files
|--group_vars
   |--all.yml
|--deploy.yml
|--inventory.ini
|--log
  |--ansible.log
|--README
|--retry_files
|--roles
  |--rolePremiere
    |--defaults
      |--main.yml
    |--tasks
      |--main.yml
    |--files
    |--templates
      |--app.conf.j2
    |--vars
  |--roleSecond
  |--roleThird
|--rollback.yml
|--start.yml
|--stop.yml

Question 1 ： I can't read it inventory.ini The variables in the

stay inventory.ini The following are defined in ：

[appNode]
192.168.x.A ansible_ssh_port=xxx ansible_ssh_user=root
192.168.y.B ansible_ssh_port=xxx ansible_ssh_user=root

[all:vars]
major_version = 5
basedir = /opt/app
is_cluster = true
is_consistent = false

In execution roles/rolePremiere/tasks/main.yml Related tasks in , In the use of inventory.ini in [all:vars] When defining variables , Unexpectedly, it indicates that the variable is undefined ！ however [appNode] Medium hosts The information can be read .

Strangely enough , When I move these variables to group_vars/all.yml Or corresponding role Under the defaults/main.yml In the after , You can read the corresponding variables ！

Question two ： The read variable is different from the defined value

I am here roles/rolePremiere/templates/app.conf.j2 Variables are used in is_consistent As a condition of judgment , as follows

{
    % if ( is_consistent == "false" ) %}

According to the value defined above （ Suppose the variable is defined in group_vars/all.yml in ）, This judgment condition should hold . But in fact ,if The following corresponding statement does not execute .

By checking the logs and files on the target machine , When calling the template file , The value of this variable becomes False, That is, the first letter becomes uppercase , Cause the judgment conditions to fail .

The way around is to rewrite the above judgment sentence as

{
    % if ( is_consistent | string | lower == "false" ) %}