ansible_vars_consul

Ansible vars plugin, to get inventory configuration variables from Hashicorp Consul KV store.

Usage

Consul KV store should contain tree structure, starting in 'inventory-json' folder, for example:

/inventory-json/common/foo:bar - configuration level common to all inventories and projects.
/inventory-json/pgsql/bar:baz- configuration level for all hosts in 'pgsql' group.
/inventory-json/dev/common/foo:xyz - configuration level common for all hosts in 'dev' project.
/inventory-json/dev/redis/param:redis-dev - configuration level common for all hosts in group 'redis' of 'dev' project.

The script will merge all parameters in abovementioned order, so mode specific config will take precedence over common config.

Only configration parameter needed - Consul URL, set in CONSUL_KV_URL parameter inside of VarsModule class.

Inventory example:

[all:vars]
# this is project name for importing project-level variables
project=cool_project

[backend]
192.168.1.215 hostname=back-05
192.168.1.216 hostname=back-06

[service]
192.168.1.217 hostname=service-06
192.168.1.218 hostname=service-07

[cron]
192.168.1.39 hostname=cron-01
192.168.1.40 hostname=cron-02

Group names backend/service/cron is used to import group-level variables.

PR's are welcome.