Hi team,
I would like to start my question by using a sample template:
heat_template_version: 2014-10-16
parameters:
count:
type: number
default: 5
removal_list:
type: comma_delimited_list
default: []
resources:
sample_group:
type: OS::Heat::ResourceGroup
properties:
count: {get_param: count}
removal_policies: [{resource_list: {get_param: removal_list}}]
resource_def:
type: testnested.yaml
outputs:
resource_list:
value: # How to output a list of resources of sample_group? Like
"resource_list: ['0', '1', '2', '3', '4']"?
As showed above, this template has a resource group that contains resources
defined in a nested template. First, I am going to use this template to create
a stack. Then, I am going to update the stack to scale down the resource group
by specifying (through parameters) a subset of resources that I want to remove.
For example,
$ heat stack-create -f test.yaml test
$ heat stack-show test
$ heat stack-update -f test.yaml -P "count=3;removal_list=1,3" test
I want to know if it is possible to output a "resource_list" that lists all the
removal candidate, so that I can programmatically process the list to compile
another list (that is "removal_list") which will be passed back to the template
as a parameter. Any help will be appreciated.
Thanks,
Honbgin
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