GCP: How to pull inventory dynamically with multiple labels using Inventory Plugins?

[Sreenivas Chokkarapu]

Hi Folks,

I'm using ansible 2.8.4 with Google cloud platform. I'm using Inventory Plugins to get the dynamic inventory as ansible recommends. 

I've 2 Apache nifi clusters, so I'm pulling inventory using gcp_compute. Each cluster I have a label

index: 1 and index: 2 so that I can pull vms dynamically based on the index. 

plugin inventory:

plugin: gcp_compute

projects:

  - my-gcp-project

auth_kind: serviceaccount

keyed_groups:

  - prefix: gcp

    key: labels

compose:

  ansible_host: networkInterfaces[0].networkIP

then I get dynamic groups gcp_index_1 and gcp_index_2 which I am using in my playbooks. Currently I have 2 playbooks one for the cluster 1 and another for cluster 2. 

In the playbooks I've hardcoded those groups like gcp_index_1 and gcp_index_2 which essential does the same things but deploys on different clusters.

With AWS/Azure, I used Inventory scripts, where I had my groups specified in the hosts file and then used to pull the inventory based on the multiple tags.

e.g AZURE_TAGS=stack:dev,index:1 ansible-playbook nifi-install.yml. 

In GCP, I would like to do the same but is there a way to pull inventory with multiple labels so that i can avoid duplication of having separate playbooks for each cluster.

i.e. I'd like to have one playbook and target which cluster I want to install nifi based on multiple labels. 

any suggestions how I go about acheiveing this?

Regards,

Sreenivas