start adding inventory

inventory.py

@@ -0,0 +1,51 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+"""
+Create a dynamic inventory for this ansible playbook
+"""
+import socket
+import sys
+
+# create a dict to match hostnames to enviroments
+env_dict = {
+  'work':
+    ['workstation.local'],
+  'private':
+    ['dderpy.local', 'foo.bar']
+}
+
+def fqdn():
+    """
+    return fully qualified domain name
+    """
+    return socket.getfqdn()
+
+def env(domain):
+    """
+    map a hostname to a space
+    """
+    for key, values in env_dict.items():
+        if domain in values:
+            return key
+    sys.exit('{"group": { "hosts": ["example.com"], "vars": {} }, "_meta": { "foo": "bar" }}')
+
+
+def main():
+    """
+    main funktion
+      will analyse on which host this script is started
+      and will print the dynamic inventory to tell ansible
+      which host_vars and group_vars should be used
+    """
+    host = fqdn()
+    group = env(host)
+    print(host + group)
+# {
+#   "group":
+#     { "hosts": ["127.0.0.1", "::1"], "vars": {}  },
+#   "_meta":
+#     { "hostvars": { "192.168.28.71": {  "host_specific_var": "bar" },
+#       "192.168.28.72": {  "host_specific_var": "foo"   }}    }
+# }
+
+main()