Merge pull request #1418 from edx/e0d/lifecycle-inventory

initial working version

playbooks/edx-east/lifecycle_inventory.py

+#!/usr/bin/env python
+
+"""
+Build an ansible inventory based on autoscaling group instance lifecycle state.
+
+Outputs JSON to stdout with keys for each state and combination of autoscaling
+group and state.
+
+{
+  "InService": [
+    "10.0.47.127",
+    "10.0.46.174"
+  ],
+  "Terminating:Wait": [
+    "10.0.48.104"
+  ],
+  "e-d-CommonClusterServerAsGroup": [
+    "10.0.47.127",
+    "10.0.46.174"
+  ],
+  "e-d-CommonClusterServerAsGroup_InService": [
+    "10.0.47.127",
+    "10.0.46.174"
+  ],
+  "e-d-CommonClusterServerAsGroup_InService": [
+    "10.0.48.104"
+  ]
+
+}
+"""
+import argparse
+import boto
+import json
+from collections import defaultdict
+
+class LifecycleInventory():
+
+    profile = None
+
+    def __init__(self, profile):
+        parser = argparse.ArgumentParser()
+        self.profile = profile
+
+    def get_instance_dict(self):
+        ec2 = boto.connect_ec2(profile_name=self.profile)
+        reservations = ec2.get_all_instances()
+
+        dict = {}
+
+        for instance in [i for r in reservations for i in r.instances]:
+            dict[instance.id] = instance
+
+        return dict
+
+    def run(self):
+        autoscale = boto.connect_autoscale(profile_name=self.profile)
+        groups = autoscale.get_all_groups()
+
+        instances = self.get_instance_dict()
+        inventory = defaultdict(list)
+
+        for group in groups:
+
+            for instance in group.instances:
+
+                private_ip_address = instances[instance.instance_id].private_ip_address
+
+                inventory[group.name].append(private_ip_address)
+                inventory[group.name + "_" + instance.lifecycle_state].append(private_ip_address)
+                inventory[instance.lifecycle_state].append(private_ip_address)
+
+        print json.dumps(inventory, sort_keys=True, indent=2)
+
+if __name__=="__main__":
+
+    parser = argparse.ArgumentParser()
+    parser.add_argument('-p', '--profile', help='The aws profile to use when connecting.')
+    args = parser.parse_args()
+    
+    LifecycleInventory(args.profile).run()
+
+
+    

playbooks/roles/aws/templates/edx/etc/minos.yml

+---
+
+aws_profile: !!null
+s3_bucket: 'edx-prod-edx'
+bucket_path: 'test'
+
+voters:
+  - BellwetherVoter:
+      config:
+  - ProccessQuienscenceVoter:
+      config:
+        process_name: 'gunicorn'
+  - TrackingLogVoter:
+      config:
+        aws_profile: !!null
+        s3_bucket: 'edx-prod-edx'
+        bucket_path: 'test'
+        local_directory: '{{ COMMON_LOG_DIR }}'