RE: [Heat] Reg accessing variables of resource group heat api

11 Feb 2019


      Hi ,
   May I know in the following example given
parameters:
  resource_name_map:
    - network1: foo_custom_name_net1
      network2: foo_custom_name_net2
    - network1: bar_custom_name_net1
      network2: bar_custom_name_net2
   what is the parameter type ?
Thanks,
A.Nanthini
From: Rabi Mishra [mailto:ramishra@redhat.com]
Sent: Tuesday, February 12, 2019 10:45 AM
To: NANTHINI A A nanthini.a.a@ericsson.com
Cc: hjensas@redhat.com; openstack-dev@lists.openstack.org
Subject: Re: [Heat] Reg accessing variables of resource group heat api
On Mon, Feb 11, 2019 at 9:23 PM NANTHINI A A <nanthini.a.a@ericsson.commailto:nanthini.a.a@ericsson.com> wrote:
Hi ,
   I have tried the below .But getting error .Please let me know how I can proceed further .
root@cic-1:~# cat try1.yaml
heat_template_version: 2013-05-23
description:
  This is the template for I&V R6.1 base configuration to create neutron  resources other than sg and vm for vyos vms
parameters:
  resource_name_map:
    - network1: NetworkA1
      network2: NetworkA2
    - network1: NetworkB1
      network2: NetworkB2
resources:
  neutron_Network_1:
    type: OS::Neutron::Net
    properties:
      name: {get_param: [resource_name_map, %index%, network1]}
I don't think you can use %index% directly in this template. You have to pass it as resource property from tryreapet.yaml.  Please check the example[1] in heat-templates repo (resource_group_index_lookup.yaml and random.yaml).
[1] https://github.com/openstack/heat-templates/blob/master/hot/resource_group/r...
neutron_Network_2:
    type: OS::Neutron::Net
    properties:
      name: {get_param: [resource_name_map, %index%, network2]}
root@cic-1:~# cat tryrepeat.yaml
heat_template_version: 2013-05-23
resources:
  rg:
    type: OS::Heat::ResourceGroup
    properties:
      count: 2
      resource_def:
        type: try1.yaml
root@cic-1:~#
root@cic-1:~# heat stack-create tests -f tryrepeat.yaml
WARNING (shell) "heat stack-create" is deprecated, please use "openstack stack create" instead
ERROR: resources.rg<nested_stack>: : Error parsing template file:///root/try1.yaml while scanning for the next token
found character '%' that cannot start any token
  in "<unicode string>", line 15, column 45:
     ... {get_param: [resource_name_map, %index%, network1]}
Thanks in advance .
Thanks,
A.Nanthini
-----Original Message-----
From: Harald Jensås [mailto:hjensas@redhat.commailto:hjensas@redhat.com]
Sent: Monday, February 11, 2019 7:47 PM
To: NANTHINI A A <nanthini.a.a@ericsson.commailto:nanthini.a.a@ericsson.com>; openstack-dev@lists.openstack.orgmailto:openstack-dev@lists.openstack.org
Subject: Re: [Heat] Reg accessing variables of resource group heat api
On Wed, 2019-02-06 at 06:12 +0000, NANTHINI A A wrote:
...
Hi ,
    We are developing heat templates for our vnf deployment .It
includes multiple resources .We want to repeat the resource and hence
used the api RESOURCE GROUP .
    Attached are the templates which we used
Set1.yaml -> has the resources we want to repeat Setrepeat.yaml -> has
the resource group api with count .
 We want to access the variables of resource in set1.yaml while

repeating it with count .Eg . port name ,port fixed ip address we want
to change in each set .
   Please let us know how we can have a variable with each repeated
resource .
Sounds like you want to use the index_var variable[1] to prefix/suffix reource names?
I.e in set1.yaml you can use:
name:
    list_join:
      - '_'
      - {get_param: 'OS::stack_name'}
      - %index%
      - <resource_name>
The example should resulting in something like:
  stack_0_Network3, stack_0_Subnet3
  stack_1_Network0, stack_1_Subnet0
  [ ... ]
If you want to be more advanced you could use a list parameter in the set1.yaml template, and have each list entry contain a dictionaly of each resource name. The %index% variable would then be used to pick the correct entry from the list.
parameters:
  resource_name_map:
    - network1: foo_custom_name_net1
      network2: foo_custom_name_net2
    - network1: bar_custom_name_net1
      network2: bar_custom_name_net2    -
resources:
  neutron_Network_1:
    type: OS::Neutron::Net
    properties:
      name: {get_param: [resource_name_map, %index%, network1]}
  neutron_Network_2:
    type: OS::Neutron::Net
    properties:
      name: {get_param: [resource_name_map, %index%, network2]}
%index% is the "count" picking the 'foo' entries when %index% is 0, and 'bar' entries when %index% is 1 and so on.
[1]
https://docs.openstack.org/heat/latest/template_guide/openstack.html#OS::Hea...
--
Regards,
Rabi Mishra