02-wordpress-efs.yaml

---
AWSTemplateFormatVersion: 2010-09-09

Description: Stack to create EFS

Metadata:

   Authors:
    Description: https://github.com/lzrocha

   AWS::CloudFormation::Interface:
    ParameterGroups:
    - Label:
        default: Amazon EFS Parameters
      Parameters:
        - VpcId
        - Subnet
        - NumberOfSubnets
        - EfsSecurityGroup
        - PerformanceMode
    ParameterLabels:
      EfsSecurityGroup:
        default: EFS Security Group
      Subnet:
        default: Subnets
      VpcId:
        default: Vpc Id
      NumberOfSubnets:
        default: Number of Subnets
      PerformanceMode:
        default: Performance Mode
        
Conditions:
  
  NumberOfSubnets1:
      !Equals [ 1, !Ref NumberOfSubnets ]
  NumberOfSubnets2:
      !Equals [ 2, !Ref NumberOfSubnets ]
  NumberOfSubnets3:
      !Equals [ 3, !Ref NumberOfSubnets ]
  NumberOfSubnets4:
      !Equals [ 4, !Ref NumberOfSubnets ]
  NumberOfSubnets5:
      !Equals [ 5, !Ref NumberOfSubnets ]
  NumberOfSubnets6:
      !Equals [ 6, !Ref NumberOfSubnets ]
  Subnet0: !Or
    - !Condition NumberOfSubnets1
    - !Condition NumberOfSubnets2
    - !Condition NumberOfSubnets3
    - !Condition NumberOfSubnets4
    - !Condition NumberOfSubnets5
    - !Condition NumberOfSubnets6
  Subnet1: !Or
    - !Condition NumberOfSubnets2
    - !Condition NumberOfSubnets3
    - !Condition NumberOfSubnets4
    - !Condition NumberOfSubnets5
    - !Condition NumberOfSubnets6
  Subnet2: !Or
    - !Condition NumberOfSubnets3
    - !Condition NumberOfSubnets4
    - !Condition NumberOfSubnets5
    - !Condition NumberOfSubnets6
  Subnet3: !Or
    - !Condition NumberOfSubnets4
    - !Condition NumberOfSubnets5
    - !Condition NumberOfSubnets6
  Subnet4: !Or
    - !Condition NumberOfSubnets5
    - !Condition NumberOfSubnets6
  Subnet5: !Condition NumberOfSubnets6
        
Parameters:
  VpcId:
    Description: The Vpc Id of an existing Vpc.
    Type: AWS::EC2::VPC::Id
    ConstraintDescription: must be the VPC Id of an existing Virtual Private Cloud.
  Subnet:
    Description: The Subnet ID of existing subnets.
    Type: List<AWS::EC2::Subnet::Id>
    ConstraintDescription: It is recommended to include all available subnets.
  EfsSecurityGroup:
    Description: Select the Amazon EFS security group.
    Type: AWS::EC2::SecurityGroup::Id 
  NumberOfSubnets:
    AllowedValues:
    - 1
    - 2
    - 3
    - 4
    - 5
    - 6
    Default: 3
    Description: Number of subnets. This must match your selections in the list of Subnets below.
    Type: String 
  PerformanceMode:
        AllowedValues:
          - generalPurpose
          - maxIO
        Default: generalPurpose
        Description: Select the performance mode of the file system.
        Type: String 

Resources:
  ElasticFileSystem:
    Type: AWS::EFS::FileSystem
    Properties:
      PerformanceMode: !Ref PerformanceMode
  ElasticFileSystemMountTarget0:
    Condition: Subnet0
    Type: AWS::EFS::MountTarget
    Properties:
      FileSystemId: !Ref ElasticFileSystem
      SecurityGroups:
      - !Ref EfsSecurityGroup
      SubnetId: !Select [ 0, !Ref Subnet ]
  ElasticFileSystemMountTarget1:
    Condition: Subnet1
    Type: AWS::EFS::MountTarget
    Properties:
      FileSystemId: !Ref ElasticFileSystem
      SecurityGroups:
      - !Ref EfsSecurityGroup
      SubnetId: !Select [ 1, !Ref Subnet ]
  ElasticFileSystemMountTarget2:
    Condition: Subnet2
    Type: AWS::EFS::MountTarget
    Properties:
      FileSystemId: !Ref ElasticFileSystem
      SecurityGroups:
      - !Ref EfsSecurityGroup
      SubnetId: !Select [ 2, !Ref Subnet ]
  ElasticFileSystemMountTarget3:
    Condition: Subnet3
    Type: AWS::EFS::MountTarget
    Properties:
      FileSystemId: !Ref ElasticFileSystem
      SecurityGroups:
      - !Ref EfsSecurityGroup
      SubnetId: !Select [ 3, !Ref Subnet ]
  ElasticFileSystemMountTarget4:
    Condition: Subnet4
    Type: AWS::EFS::MountTarget
    Properties:
      FileSystemId: !Ref ElasticFileSystem
      SecurityGroups:
      - !Ref EfsSecurityGroup
      SubnetId: !Select [ 4, !Ref Subnet ]
  ElasticFileSystemMountTarget5:
    Condition: Subnet5
    Type: AWS::EFS::MountTarget
    Properties:
      FileSystemId: !Ref ElasticFileSystem
      SecurityGroups:
      - !Ref EfsSecurityGroup
      SubnetId: !Select [ 5, !Ref Subnet ]
        
Outputs:
  ElasticFileSystem:
    Value: !Ref ElasticFileSystem
  ElasticFileSystemDnsName:
    Description: DNS name for the Amazon EFS file system.
    Value: !Join [ '.', [ !Ref ElasticFileSystem, 'efs', !Ref 'AWS::Region', 'amazonaws', 'com' ] ]
  ElasticFileSystemMountCommand:
    Description: Mount command for mounting the Amazon EFS file system.
    Value: !Join [ '', [ 'sudo mount -t nfs4 -o nfsvers=4.1,rsize=1048576,wsize=1048576,hard,timeo=600,retrans=2 ', !Join [ '.', [ !Ref ElasticFileSystem, 'efs', !Ref 'AWS::Region', 'amazonaws', 'com:/', '/', !Ref ElasticFileSystem ] ] ] ]