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[cloud] ec2_group: Handle duplicate names between EC2 classic and VPC groups (#28931)

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* ec2_group: Handle name conflict with empty vpc_id.

If several groups exist with the same name (and vpc_id is None) then
treat the group outside the vpc as preferred (same as it would for a vpc
group with vpc_id specified). Also don't run the egress rules code in
that case.

* Handle lack of `IpPermissionsEgress` attribute on EC2 classic groups

In EC2 classic groups, the `while True` loop checking for egress
permissions will continue infinitely.

* Handle incompatible combinations of EC2 Classic + VPC groups

* Fix integration tests in accounts lacking EC2 classic

This change checks against the security group created, instead of the
module parameters, for VPC ID. This means that new accounts with a
default VPC will still wait properly for the first egress rule to
populate.

* Fix conditional for storing described groups with preference for matching VPC IDs

* Revert `vpc_id is None` on conditional to allow for default VPCs
This commit is contained in:
Sloane Hertel 2017-09-13 14:19:05 -04:00 committed by Ryan Brown
parent 4e32c92166
commit 4bc4abfe1b
1 changed files with 27 additions and 12 deletions
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35
lib/ansible/modules/cloud/amazon/ec2_group.py
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@ -385,9 +385,17 @@ def get_target_from_rule(module, client, rule, name, group, groups, vpc_id):
group_id = group['GroupId']
groups[group_id] = group
groups[group_name] = group
elif group_name in groups:
elif group_name in groups and group.get('VpcId') and groups[group_name].get('VpcId'):
# both are VPC groups, this is ok
group_id = groups[group_name]['GroupId']
elif group_name in groups and not (group.get('VpcId') or groups[group_name].get('VpcId')):
# both are EC2 classic, this is ok
group_id = groups[group_name]['GroupId']
else:
# if we got here, either the target group does not exist, or there
# is a mix of EC2 classic + VPC groups. Mixing of EC2 classic + VPC
# is bad, so we have to create a new SG because no compatible group
# exists
if not rule.get('group_desc', '').strip():
module.fail_json(msg="group %s will be automatically created by rule %s and "
"no description was provided" % (group_name, rule))
@ -633,16 +641,23 @@ def main():
groupName = sg['GroupName']
if groupName in groups:
# Prioritise groups from the current VPC
if vpc_id is None or sg['VpcId'] == vpc_id:
# even if current VPC is EC2-Classic
if groups[groupName].get('VpcId') == vpc_id:
# Group saved already matches current VPC, change nothing
pass
elif vpc_id is None and groups[groupName].get('VpcId') is None:
# We're in EC2 classic, and the group already saved is as well
# No VPC groups can be used alongside EC2 classic groups
pass
else:
# the current SG stored has no direct match, so we can replace it
groups[groupName] = sg
else:
groups[groupName] = sg
if group_id:
if sg['GroupId'] == group_id:
if group_id and sg['GroupId'] == group_id:
group = sg
else:
if groupName == name and (vpc_id is None or sg['VpcId'] == vpc_id):
elif groupName == name and (vpc_id is None or sg['VpcId'] == vpc_id):
group = sg
# Ensure requested group is absent
@ -685,7 +700,7 @@ def main():
# amazon sometimes takes a couple seconds to update the security group so wait till it exists
while True:
group = get_security_groups_with_backoff(client, GroupIds=[group['GroupId']])['SecurityGroups'][0]
if not group['IpPermissionsEgress']:
if group.get('VpcId') and not group.get('IpPermissionsEgress'):
pass
else:
break
@ -831,8 +846,8 @@ def main():
# If rule already exists, don't later delete it
changed, ip_permission = authorize_ip("out", changed, client, group, groupRules, ipv6,
ip_permission, module, rule, "ipv6")
else:
# when no egress rules are specified,
elif vpc_id is not None:
# when no egress rules are specified and we're in a VPC,
# we add in a default allow all out rule, which was the
# default behavior before egress rules were added
default_egress_rule = 'out--1-None-None-' + group['GroupId'] + '-0.0.0.0/0'
@ -856,7 +871,7 @@ def main():
del groupRules[default_egress_rule]
# Finally, remove anything left in the groupRules -- these will be defunct rules
if purge_rules_egress:
if purge_rules_egress and vpc_id is not None:
for (rule, grant) in groupRules.values():
# we shouldn't be revoking 0.0.0.0 egress
if grant != '0.0.0.0/0':