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-rw-r--r--inventory/aws/ec2.ini7
-rw-r--r--inventory/aws/ec2.py6
2 files changed, 12 insertions, 1 deletions
diff --git a/inventory/aws/ec2.ini b/inventory/aws/ec2.ini
index 8a0c3ad45..eaab0a410 100644
--- a/inventory/aws/ec2.ini
+++ b/inventory/aws/ec2.ini
@@ -53,3 +53,10 @@ cache_path = ~/.ansible/tmp
# seconds, a new API call will be made, and the cache file will be updated.
# To disable the cache, set this value to 0
cache_max_age = 300
+
+# These two settings allow flexible ansible host naming based on a format
+# string and a comma-separated list of ec2 tags. The tags used must be
+# present for all instances, or the code will fail. This overrides both
+# destination_variable and vpc_destination_variable.
+# destination_format = {0}.{1}.rhcloud.com
+# destination_format_tags = Name,environment
diff --git a/inventory/aws/ec2.py b/inventory/aws/ec2.py
index 0f7c19857..f4e029553 100644
--- a/inventory/aws/ec2.py
+++ b/inventory/aws/ec2.py
@@ -215,6 +215,8 @@ class Ec2Inventory(object):
# Destination addresses
self.destination_variable = config.get('ec2', 'destination_variable')
self.vpc_destination_variable = config.get('ec2', 'vpc_destination_variable')
+ self.destination_format = config.get('ec2', 'destination_format')
+ self.destination_format_tags = config.get('ec2', 'destination_format_tags', '').split(',')
# Route53
self.route53_enabled = config.getboolean('ec2', 'route53')
@@ -411,7 +413,9 @@ class Ec2Inventory(object):
return
# Select the best destination address
- if instance.subnet_id:
+ if self.destination_format and self.destination_format_tags:
+ dest = self.destination_format.format(*[ getattr(instance, 'tags').get(tag, 'nil') for tag in self.destination_format_tags ])
+ elif instance.subnet_id:
dest = getattr(instance, self.vpc_destination_variable, None)
if dest is None:
dest = getattr(instance, 'tags').get(self.vpc_destination_variable, None)