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module.yml
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module.yml
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---
# Copyright 2018 widdix GmbH
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
AWSTemplateFormatVersion: '2010-09-09'
Description: 'cfn-modules: NLB'
# cfn-modules:implements(ExposeArn, LoadBalancer)
Parameters:
VpcModule:
Description: 'Stack name of vpc module.'
Type: String
BucketModule:
Description: 'Optional but recommended stack name of s3-bucket module to store access logs.'
Type: String
Default: ''
Scheme:
Description: 'Indicates whether the load balancer reachable from the public Internet or only from within the VPC.'
Type: String
Default: 'internet-facing'
AllowedValues:
- 'internet-facing'
- internal
CrossZone:
Description: 'Indicates whether cross-zone load balancing is enabled.'
Type: String
Default: 'false'
AllowedValues: ['true', 'false']
Conditions:
HasBucketModule: !Not [!Equals [!Ref BucketModule, '']]
HasSchemeInternal: !Equals [!Ref Scheme, 'internal']
Resources:
LoadBalancer:
Type: 'AWS::ElasticLoadBalancingV2::LoadBalancer'
Properties:
LoadBalancerAttributes:
- Key: 'load_balancing.cross_zone.enabled'
Value: !Ref CrossZone
- Key: 'access_logs.s3.enabled'
Value: !If [HasBucketModule, 'true', 'false']
- !If [HasBucketModule, {Key: 'access_logs.s3.prefix', Value: !Ref 'AWS::StackName'}, !Ref 'AWS::NoValue']
- !If [HasBucketModule, {Key: 'access_logs.s3.bucket', Value: {'Fn::ImportValue': !Sub '${BucketModule}-Name'}}, !Ref 'AWS::NoValue']
Scheme: !Ref Scheme
Subnets: !If
- HasSchemeInternal
- !Split [',', {'Fn::ImportValue': !Sub '${VpcModule}-SubnetIdsPrivate'}]
- !Split [',', {'Fn::ImportValue': !Sub '${VpcModule}-SubnetIdsPublic'}]
Type: network
Outputs:
ModuleId:
Value: 'nlb'
ModuleVersion:
Value: '1.1.0'
StackName:
Value: !Ref 'AWS::StackName'
Arn:
Value: !Ref LoadBalancer
Export:
Name: !Sub '${AWS::StackName}-Arn'
CanonicalHostedZoneId:
Value: !GetAtt LoadBalancer.CanonicalHostedZoneID
Export:
Name: !Sub '${AWS::StackName}-CanonicalHostedZoneId'
DnsName:
Value: !GetAtt 'LoadBalancer.DNSName'
Export:
Name: !Sub '${AWS::StackName}-DnsName'