bulk set_fact from output of an external script?

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1

Right now I have a role/common that does a lot of “discovery” about the machine.
It does things like looks at the hostname and sets “machine_env” to dev/qa/prod.
It also does a lot of discovery to see what applications are installed and/or running on the box and then sets facts like “systemd_nginx_enabled: true” if nginx is enabled in systemd.
This all works fine, but there are like 30 checks that I am doing (for all the different apps etc) and it seems to add like 20m+ to the ansible run when I have a lot of machines.

It seems like it would be WAY more efficient to write a script that would quickly do the machine discovery and then output something like:
machine_env: prod

systemd_nginx_enabled: true
systemd_mongodb_enabled: false

systemd_redis_enabled: false

systemd_consul_enabled: true

systemd_apache_enabled: false

systemd_zookeeper_enabled: false
…

where the output could be iterated over and the respective facts are then set.

Is this possible? I am thinking it is some incantation with “map” and “list”, but I don’t know exactly how to do it.

Thanks!

2

https://docs.ansible.com/ansible/latest/modules/setup_module.html

looks like I can put scripts in /etc/ansible/facts.d on each machine (via ansible) and make the output look something like

----- CUT -----

{
“machine_env” : “prod”

…

“systemd_zookeeper_enabled” : “false”
}

----- CUT -----