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https://issues.apache.org/jira/browse/ARIA-254?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ran Ziv reopened ARIA-254:
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> Support multiple nodes of a node template at service creation time
> ------------------------------------------------------------------
>
> Key: ARIA-254
> URL: https://issues.apache.org/jira/browse/ARIA-254
> Project: AriaTosca
> Issue Type: Story
> Reporter: Ran Ziv
> Assignee: Tal Liron
> Priority: Critical
> Fix For: 0.2.0
>
>
> Currently each node template can only have a single node.
> We need to support having multiple nodes of a given node-template at service
> creation time. The mechanism for this should take into consideration future
> stories which would require allowing scaling the number of nodes of a
> node-template up or down.
> Note: the term {{default_instances}} appears in several places in the code
> ([1|https://github.com/apache/incubator-ariatosca/blob/1f3e7ff42fefcd5dc8191e3b0eeac0460db059b0/extensions/aria_extension_tosca/profiles/tosca-simple-1.0/capabilities.yaml#L151],
>
> [2|https://github.com/apache/incubator-ariatosca/blob/fdd57c47acfe63dc25c6f20bcb3785225b3f774d/aria/modeling/service_template.py#L310],
>
> [3|https://github.com/apache/incubator-ariatosca/blob/60ea3ebb21e762d36115db26563a93dd3cb72003/extensions/aria_extension_tosca/simple_v1_0/modeling/__init__.py#L163])
> - we could perhaps use this or an extension based on this idea to support
> this issue.
> One other thing that should be taken into consideration (but perhaps be moved
> to a separate JIRA issue) is the implicit declaration of multiple instances
> via the capabilities&requirements mechanism in TOSCA - We need to decide if
> to support this as well or not, and if we do, how does this play together
> with the primary method of declaring multiple nodes (or perhaps would this be
> the only method of doing so?)
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