Add check_openstack.py

A sample python script to use REST API and novaclient python module

check_openstack.py

@@ -0,0 +1,71 @@
+#!/usr/bin/env python
+
+import os
+import requests
+
+from novaclient.client import Client as nova_auth
+from keystoneclient.v3.client import Client as keystone_auth
+
+def get_credentials():
+    cred = {}
+    cred['version'] = '2'
+    cred['username'] = "admin"
+    cred['password'] = "openstack"
+    cred['auth_url'] = "http://10.0.1.216:5000/v3"
+    cred['project_name'] = "admin"
+    cred['user_domain_name'] = "admin_domain"
+    cred['project_domain_name'] = "admin_domain"
+
+    return cred
+
+def get_auth_token():
+    creds = get_credentials()
+    keystone_client = keystone_auth(**creds)
+    
+    return keystone_client.auth_token
+
+def get_servers():
+    creds = get_credentials()
+    nova_client = nova_auth(**creds)
+
+    print(nova_client.servers.list())
+
+def get_cores():
+    url="http://placement.example.com:8778"
+
+    token = get_auth_token()
+
+    headers = {}
+    headers['content-type'] = 'application/json'
+    headers['x-auth-token'] = token
+
+    request = "/resource_providers"
+
+    r = requests.get("{}/{}".format(url,request),headers=headers)
+
+    for res in r.json()['resource_providers']:
+      uuid = res['uuid']
+      hostname = res['name']
+
+      request = "/resource_providers/{}/inventories".format(uuid)
+    
+      r = requests.get("{}/{}".format(url,request),headers=headers)
+
+      inventory = r.json()['inventories']
+
+      cores=0
+
+      if 'VCPU' in inventory:
+        cores+=inventory['VCPU']['total']
+      if 'PCPU' in inventory:
+        cores+=inventory['PCPU']['total']
+
+
+      print("{}: {}".format(hostname,cores))
+
+def main():
+    get_servers()
+    get_cores()
+
+if __name__ == '__main__':
+    main()