Found the answer luckily by searching the groups.
Documented here if someone stumbles on the same thing (no need for
with_items):
subnets: "{{ vpc.subnets | map(attribute='id') | list}}"
On 25 September 2014 11:36, Timo Ahokas <[email protected]> wrote:
> Hi,
>
> I'm trying to use the rds_subnet_group module to create a subnet group
> with all the subnets defined in my VPC, but I'm having trouble finding a
> way of using the subnet ids from a registered vpc variable.
>
> So, first I create a VPC & register the response:
>
> - name: Create VPC
> local_action:
> module: ec2_vpc
> state: present
> subnets: ...
> route_tables: ...
> register: vpc
>
> This works well and the result looks like:
>
> TASK: [debug var=vpc]
> *********************************************************
> ok: [localhost] => {
> "vpc": {
> "changed": true,
> "invocation": {
> "module_args": "",
> "module_name": "ec2_vpc"
> },
> "subnets": [
> {
> "az": "eu-west-11",
> "cidr": "10.55.81.0/24",
> "id": "subnet-d1d21ea6",
> "resource_tags": {
> "Environment": "test",
> "Name": "test_euw1a_app",
> }
> },
> { ... } ] }
>
> Now I'd like to use the subnet ids (subnets.id) in this response when
> creating a RDS subnet with all of them attached:
>
> - name: Create DB subnet group
> local_action:
> module: rds_subnet_group
> state: present
> name: "rds-sg"
> description: "rds-sg"
> subnets:
> - "{{ item.id }}"
> with_items: vpc.subnets
>
> The problem is that if I have the with_item on the same level of
> local_action it seems to make N calls to rds_subnet_group (each with one of
> the ids) with fail with:
> msg: DB Subnet Group doesn't meet availability zone coverage requirement.
> Please add subnets to cover at least 2 availability zones. Current
> coverage: 1
>
> So I'd like to add all the subnets in one go (single call with all subnet
> ids defined for the "subnets" parameter). With_items doesn't seem to work
> when it's nested on the same level with the other params (subnets/state) -
> instead I get the error:
> fatal: [localhost -> 127.0.0.1] => One or more undefined variables: 'item'
> is undefined
>
> What would be the best way to use all the vpc.subnets.id values in a list
> and supply those to rds_subnet_group.subnets in one go?
>
> Best regards,
> Timo
>
>
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