Airflow metrics

[LDiazN]

This PR will implement airflow metrics collection. It adds:

1. A new prometheus_statsd exporter Ansible role. Several services use statsd, so I made an ansible role for them when it's necessary
2. Added this role to the airflow role
3. Set up airflow to push metrics to the exporter

closes #363

[github-actions]

Ansible Run Output 🤖

Ansible Playbook Recap 🔍

Ansible playbook output 📖success

Show Execution

$ ansible-playbook playbook.yml --check --diff -i ../tf/modules/ansible_inventory/inventories/inventory-dev.ini
[WARNING]: provided hosts list is empty, only localhost is available. Note that the implicit localhost does not match 'all'
[ERROR]: the role 'geerlingguy.docker' was not found in /home/runner/work/devops/devops/ansible/roles:/home/runner/.ansible/roles:/usr/share/ansible/roles:/etc/ansible/roles:/home/runner/work/devops/devops/ansible
Origin: /home/runner/work/devops/devops/ansible/deploy-testlists.yml:16:7

14         node_exporter_host: "0.0.0.0"
15         node_exporter_options: ""
16     - role: geerlingguy.docker
         ^ column 7

Pusher	@LDiazN
Action	pull_request
Working Directory
Workflow	.github/workflows/check_ansible.yml
Last updated	Fri, 20 Mar 2026 12:22:28 GMT

[hellais]

LGTM