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evangelostsak
d3a990454f
The extras file pinned swarm.manager.advertise_addr and storage.nfs.server to the lab addresses, and extras override the group_vars default. Every tunnel came up and carried nothing: swarm kept advertising 192.168.244.10 and the clients kept mounting 192.168.244.13, so the mesh existed beside the traffic it was built for rather than under it. Read from the host_vars the mesh writer produced earlier in the round rather than recomputed, so the address allocation stays in one place, with the underlay kept as the fallback for a round that has no mesh. Caught in a drill whose gate had just gone green: tunnels healthy, handshakes current, and swarm still on the underlay.
Shared Utilities (utils/)
This directory contains shared Python helpers used by custom modules and plugins.
Purpose
Use utils/ for reusable code that should not be duplicated across:
library/modules,plugins/action/,plugins/filter/,plugins/lookup/.
Typical shared utilities:
- API clients,
- validation/conversion helpers,
- path and configuration helpers,
- cross-plugin/module domain logic.
- Shared HTTP(S) connection handler for multiple modules.
- Common validation or transformation functions for user input.
- Utility functions for interacting with Docker, LDAP, etc.
- Grouped helper packages such as
utils/domains/for related domain logic.
Design Guidelines
- Keep helpers focused and composable.
- Avoid side effects during import.
- Prefer explicit function/class APIs over implicit globals.
- Keep dependencies minimal so modules/plugins stay lightweight.
Example Import
from utils.domains.primary_domain import get_primary_domain
What Does Not Belong Here
- Standalone executable modules (put in
library/). - Ansible plugin entrypoints (put in
plugins/*).
References
- Module utilities: https://docs.ansible.com/ansible/latest/dev_guide/developing_module_utilities.html
- Plugin development: https://docs.ansible.com/ansible/latest/dev_guide/developing_plugins.html