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Ah, sorry. I misunderstood what you were trying to do.

Why create a template that takes in a list of pool members, rather then pass the pool id to the template the instance is in, and use a PoolMember to attach it?

Thanks,
Kevin
________________________________
From: Subrahmanyam Ongole [songole at oneconvergence.com]
Sent: Tuesday, October 21, 2014 11:05 AM
To: OpenStack Development Mailing List (not for usage questions)
Subject: Re: [openstack-dev] [Heat] Combination of Heat ResourceGroup(index) with Fn::Select doesnt work ?

Hi

We are in fact using OS::Neutron::PoolMember resource. I guess ResourceGroup is the only iterative construct in Heat. Is the use case supported today?  I think this is more than a simple usage question, hence posting it here. Thank you.

Regards
Subra

On Tue, Oct 21, 2014 at 8:55 AM, Fox, Kevin M <Kevin.Fox at pnnl.gov<mailto:Kevin.Fox at pnnl.gov>> wrote:
use a OS::Neutron::PoolMember instead. Then each member template can add itself to the pool.

________________________________
From: Magesh GV [magesh.gv at oneconvergence.com<mailto:magesh.gv at oneconvergence.com>]
Sent: Tuesday, October 21, 2014 12:07 AM
To: openstack-dev at lists.openstack.org<mailto:openstack-dev at lists.openstack.org>
Subject: [openstack-dev] Combination of Heat ResourceGroup(index) with Fn::Select doesnt work ?

I am trying to find a way of creating a dynamic List of Resources(Loadbalancer PoolMembers to be exact) using Heat.

The idea is that the number of PoolMembers and the required Addresses would be received as  Heat parameters.

However, I am unable to get %index% working inside a Fn:Select block.

Is this a bug with Heat or am I doing something wrong ? If this is a bug/limitation in heat is there some other way to get what I am trying to do working with heat ?

IMO this is a very important usecase for the %index%.

"Parameters": {
"NumberOfMembers": {
            "Description": "Number of Pool Members to be created",
            "Type": "Number",
    "Default": 1
        },
        "MembersList": {
            "Description": "Pool Member IP Address",
            "Type": "Json",
    "Default": {"key0":"11.0.0.43"}
        }
    },

"MemberList": {
        "Type": "OS::Heat::ResourceGroup",
        "Properties": {
          "count": {"Ref":"NumberOfMembers"},
          "resource_def": {
     "type": "OS::Neutron::PoolMember",
     "properties": {
"address": { "Fn::Select" : [ "key%index%", {"Ref":"MembersList"}] },
             "admin_state_up": true,
             "pool_id": {"Ref":"HaproxyPool"},
             "protocol_port": "80",
     "weight": 1
           }
     }
          }
}

Regards,
Magesh

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--

Thanks
OSM
(Subrahmanyam Ongole)
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