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Flexible tag-based naming for ec2 hosts

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Introduces destination_format and destination_format_tags
to allow the construction of host names based on one or
more ec2 tags and a python format string.
This commit is contained in:
Andy Grimm 2015-03-09 10:49:54 -04:00
parent 17103dd4cc
commit 009d0a4bb4
2 changed files with 20 additions and 1 deletions
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11
contrib/inventory/ec2.py
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@ -220,6 +220,13 @@ class Ec2Inventory(object):
# Destination addresses
self.destination_variable = config.get('ec2', 'destination_variable')
self.vpc_destination_variable = config.get('ec2', 'vpc_destination_variable')
if config.has_option('ec2', 'destination_format') and \
config.has_option('ec2', 'destination_format_tags'):
self.destination_format = config.get('ec2', 'destination_format')
self.destination_format_tags = config.get('ec2', 'destination_format_tags').split(',')
else:
self.destination_format = None
self.destination_format_tags = None
# Route53
self.route53_enabled = config.getboolean('ec2', 'route53')
@ -536,7 +543,9 @@ 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, '') 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)