AWS_CloudFormationTask_IB/task-ec2-autoscaling.yml at master · JayNoblez/AWS_CloudFormationTask_IB · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
Parameters:
  VPC:
    Description: Gets the Current VPC
    Type: AWS::EC2::VPC::Id
  AmiId:
    Description: AMI Image ID for Instance (default is latest AmaLinux2)
    Type: 'AWS::SSM::Parameter::Value<AWS::EC2::Image::Id>'
    Default: '/aws/service/ami-amazon-linux-latest/amzn2-ami-hvm-x86_64-gp2'
  AppSubnets:
    Description: "List of Subnets for use in AutoScaling Group"
    Type: "List<AWS::EC2::Subnet::Id>"
  AppSecurityGroupList:
    Description: "List of Security Groups for use in AutoScaling Group. Pick at least 3 existing subnets"
    Type: List<AWS::EC2::SecurityGroup::Id>
  KeyName:
    Type: AWS::EC2::KeyPair::KeyName
    Description: "An Existing EC2 Keypair to access created instances via SSH"
  IPAddress:
    Type: String
    Description: "This must be a valid IP address. Default is 0.0.0.0/0. It is recommended to use a /32 address"
    AllowedPattern: "(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})/(\\d{1,2})"
    ConstraintDescription: "must be a valid IP address of the form x.x.x.x/x"
  ScalingNotificationTopic:
    Type: String
    Description: Name of SNS topic to notify on EC2 Autoscaling changes
    Default: MySampleTopic
  SNSSubscriptionEndpoint:
    Description: The endpoint that recieves notifications from the Amazon SNS Topic. Endpoint value can be a URL or ARN
    Type: String
    Default: john.adedigba@gmail.com
  SNSSubscriptionProtocol:
    Type: String
    Description: The subscription's protocol
    AllowedValues:
    - http
    - https
    - email
    - email-json
    - sms
    - sqs
    - application
    - lambda
    Default: emails

Resources:
  AppASGLaunchTemplate:
    Type: AWS::EC2::LaunchTemplate
    Properties:
      LaunchTemplateData:
        KeyName: !Ref KeyName
        InstanceType: "t2.micro"
        ImageId: !Ref AmiId
        SecurityGroupIds: !Ref AppSecurityGroupList
        UserData:
          Fn::Base64: !Sub |
            #!/bin/bash
            yum update -y
            yum install httpd -y
            systemctl start httpd
            systemctl restart httpd

  SG:
    Type: AWS::AutoScaling::AutoScalingGroup
    DependsOn:
      - AppSNSTopic
    Properties:
      AvailabilityZones:
        Fn::GetAZs: ''
      LaunchTemplate:
        LaunchTemplateId: !Ref AppASGLaunchTemplate
        Version: "1"
      MaxSize: "3"
      MinSize: "1"
      HealthCheckGracePeriod: 60
      TargetGroupARNs:
        - !Ref AppALBTG
      HealthCheckType: "ELB"
      DesiredCapacity: "1"
      NotificationConfigurations:
        - TopicARN: !Ref AppSNSTopic
          NotificationTypes:
          - autoscaling:EC2_INSTANCE_LAUNCH
          - autoscaling:EC2_INSTANCE_LAUNCH_ERROR
          - autoscaling:EC2_INSTANCE_TERMINATE
          - autoscaling:EC2_INSTANCE_TERMINATE_ERROR
          - autoscaling:TEST_NOTIFICATION

  AppSNSTopic:
    Type: AWS::SNS::Topic
    Properties:
      Subscription:
        - Endpoint: !Ref SNSSubscriptionEndpoint
          Protocol: !Ref SNSSubscriptionProtocol
      TopicName: !Ref ScalingNotificationTopic

  AppALB:
    Type: AWS::ElasticLoadBalancingV2::LoadBalancer
    Properties:
      IpAddressType: 'ipv4'
      Scheme: 'internet-facing'
      SecurityGroups: !Ref AppSecurityGroupList
      Subnets:
        - !Select [0, !Ref AppSubnets]
        - !Select [1, !Ref AppSubnets]
        - !Select [2, !Ref AppSubnets]
      Type: 'application'

  AppALBListener:
    Type: AWS::ElasticLoadBalancingV2::Listener
    Properties:
      DefaultActions:
        - Type: forward
          TargetGroupArn: !Ref AppALBTG
      LoadBalancerArn: !Ref AppALB
      Port: 80
      Protocol: HTTP

  AppALBTG:
    Type: AWS::ElasticLoadBalancingV2::TargetGroup
    Properties:
      HealthCheckIntervalSeconds: 30
      HealthCheckPath: /index.php
      HealthCheckTimeoutSeconds: 5
      Port: 80
      Protocol: HTTP
      UnhealthyThresholdCount: 5
      VpcId: !Ref VPC

Outputs:
  WebsiteURL:
    Description: Application URL
    Value:
      Fn::Join:
      - ''
      - - http://
        - Fn::GetAtt:
          - AppALB
          - DNSName