Hi Is there a way to check heat templates. At the moment I run one and it errors at runtime when, for example an something expects a string but gets a list. For example in this case of an OS::Heat::SoftwareConfig resource, the config attribute below expects a string, which is why str_replace works some_resource: type: OS::Heat::SoftwareConfig properties: config: str_replace: params: $repstr$: list_join: ['-', [ {get_param: cluster_name}, 'xyz']] template: | #!/bin/bash echo $repstr$ >> /etc/somefile According to this https://docs.openstack.org/heat/latest/template_guide/openstack.html#OS::Heat::SoftwareConfig the config property expects a string. If I replace str_replace with something that generates a list (e.g. repeat) it fails at runtime. Is there a way to type check this? I tried 'heat template-validate' but it didn't do what I expected... -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack/attachments/20180320/07619f32/attachment.html>