recently i started to look up Ansible to automate server provisioning, but i cant seem to import a specific variable in my yml file to my .py script for it to be used. Example of what im looking for:
.yml
var:
server_name: ml-apitest-t1
then import that variable server_name to my variable in python, so it would kinda look like this:
self.server_name = .yml server_name
if your .yml. file looks somewhat like this:
- server:
var:
server_name: ml-apitest-t1
then you should use PyYaml, try this
import yaml
try:
from yaml import CLoader as Loader, CDumper as Dumper
except ImportError:
from yaml import Loader, Dumper
with open('test.yml', 'r') as f:
cont = yaml.load(f.read(), Loader=Loader)
print (cont)
in the case of my example it would output this
[{'server': {'var': None, 'server_name': 'ml-apitest-t1'}}]
to get the server_name from my test .yml file i would need to do this, but i your case it would look different because your .yml file structure is different
import yaml
try:
from yaml import CLoader as Loader, CDumper as Dumper
except ImportError:
from yaml import Loader, Dumper
with open('test.yml', 'r') as f:
cont = yaml.load(f.read(), Loader=Loader)
print (cont[0]['server']['server_name'])
and this is the output
ml-apitest-t1
Also here is the PyYaml documentation
cont[0]['server']['server_name'] in a var and use it as you wishYou could assign these variables as environment variable using ansible task, then access it through python.
To set environment variable in ansible:
- hosts: dev
tasks:
- name: Set server_name
environment:
SERVER_NAME: server_name
To access environment variable in python, use something like this:
import os
self.server_name = os.environ['SERVER_NAME']
Remember that the ENV above are only temporary in play level, so your python script must be called in the same play.
