unregister a variable ?

[Torsten Reinhard]

Hi all,

is it possible to "clear" or "unregister" a variable ?

I have this situation:

deploy.yml
- include "deploy-apache.yml"
- include "deploy-tomcat.yml"

deploy-apache and deploy-tomcat both have a dependency to a "deliver-artifact" role, and both run on the same server(s).
The {{installdir}} is either opt/web/install/apache or /opt/web/install/tomcat (read from included *.yml files)

The following task is implemented in this "shared" "deliver-artifact" role:

...
# for each run, backup the old installdir and install into an empty directory 
- name: stat installdir
  stat: path={{installdir}}
  register: installdir_stat

- name: get the current time for a timestamp
  command: date +%Y%m%d-%H%M%S
  register: time

- name: backup installdir
  command: mv {{installdir}} {{installdir}}_{{time.stdout}}
  when: installdir_stat.stat.exists
...

It seems that the "installdir_stat.stat.exists" is true from the "deploy-apache.yml" run - where {{installdir}} was /opt/web/install/apache

For "deploy-tomcat.yml" run the task now tries to mv a directory that doesnt exists - but the variable installdir_stat.stat.exists is true !

=> Can I clear the register ? Or what´s the solution here?

Thanx, Torsten

[James Cammarata]

Hi Torsten,

Since there is no `when` conditional on the stat task, it should be re-run and overwrite the registered variable, so I'm a bit unclear why this would be showing the behavior you're seeing. Is this the complete list of tasks, and/or there any other tasks that also use that registered variable name?

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[Torsten Reinhard]

No there are no other modules using that variable. But The question still is: Can i clear The variable somehow?

For now i removed The stat task and when condition -and added a simple Shell if statement instead to the mv operation.

Torsten

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Von: James Cammarata
Gesendet: ‎20.‎10.‎2014 20:24
An: ansible...@googlegroups.com
Betreff: Re: [ansible-project] unregister a variable ?

To view this discussion on the web visit https://groups.google.com/d/msgid/ansible-project/CAMFyvFgwTH%3Do%2B%2Bh2EjRSxTrxExTeB4b%2BtVMeER%3Dq6kV-8jSVbg%40mail.gmail.com.

[James Cammarata]

Yes, you should be able to use set_fact to initialize it to some other value and test that in your when: statement.

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