Re: Unable to use molecule

[Tod Merley]

I think I can only offer a possible approach to finding the problem.

I would alternate web search the term: ansible.errors.AnsibleError

I would search for the specific file on your drive: molecule_from_yaml

Results from the term search should provide a bit of an understanding of
what is generating the fatal error.

I normally would use sudo'ed or root'ed "updatedb" followed by "locate
molecule_from_yaml" to find the file on your drive.  This could have some
security issues so be aware of that.  The files found by "updatedb" are
then findable by those who have gotten some access to your computer.
"updatedb" also may be limited as to where it can look in it's
configuration files.  Usually it will find what you have on your drive.
But others likely have other good methods to find files.  It is simply what
I am familiar with.

The two things I am initially suspicious of is that the file is not on the
drive so then you look at which packages would be containing the file and
go get them.  If the file is on the drive then the issue usually is "does
the running program have permissions to use the file as it needs to?".

Have a lot of fun!

Tod

On Wed, Dec 12, 2018 at 12:00 AM Sudheer S  wrote:
> Hello,
>
> I am unable to get molecule to work.
>
> Here's the output when I try to run:
>
> molecule test
> --> Validating schema
>
> /home/sudheer/workspace/sudheer-projects/ansible-role-ruby/molecule/default/molecule.yml.
> Validation completed successfully.
> --> Test matrix
>
> └── default
>      ├── destroy
>      ├── syntax
>      ├── create
>      ├── prepare
>      ├── converge
>      ├── lint
>      ├── side_effect
>      ├── verify
>      └── destroy
>
> --> Scenario: 'default'
> --> Action: 'destroy'
>  PLAY [Destroy]
>  TASK [Destroy molecule instance(s)]
>  fatal: [localhost]: FAILED! => {"msg": "An unhandled exception
>
> occurred while templating '{{ lookup('file', molecule_file) |
> molecule_from_yaml }}'. Error was a <class
> 'ansible.errors.AnsibleError'>, original message: template error while
> templating string: no filter named 'molecule_from_yaml'. String: {{
> lookup('file', molecule_file) | molecule_from_yaml }}"}
>  PLAY RECAP
>  localhost                  : ok=0    changed=0 unreachable=0
>
> failed=1
>
> ERROR:
> An error occurred during the test sequence action: 'destroy'. Cleaning up.
> --> Scenario: 'default'
> --> Action: 'destroy'
>  PLAY [Destroy]
>  TASK [Destroy molecule instance(s)]
>  fatal: [localhost]: FAILED! => {"msg": "An unhandled exception
>
> occurred while templating '{{ lookup('file', molecule_file) |
> molecule_from_yaml }}'. Error was a <class
> 'ansible.errors.AnsibleError'>, original message: template error while
> templating string: no filter named 'molecule_from_yaml'. String: {{
> lookup('file', molecule_file) | molecule_from_yaml }}"}
>  PLAY RECAP
>  localhost                  : ok=0    changed=0 unreachable=0
>
> failed=1
>
> ERROR:
>
> I have installed Docker and molecule packages. I am able to use Docker
> outside of molecule on the same host.
>
> I have installed these pacakges.
>
> python3-molecule.noarch 2.19-2.fc29                         @updates
> python2-docker.noarch 3.5.0-1.fc29                        @fedora
> docker.x86_64 2:1.13.1-62.git9cb56fd.fc29         @fedora
>
> I have tried removing python2-docker and installing python3-docker.
> There's no change in result.
>
> Am I missing something?
>
> Sudheer
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